.gitignore

@@ -34,7 +34,4 @@ report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
 .DS_Store
 
 /tmp
-vscode-extension/tmp
+/docs
-/docs
-
-*.vsix

bin/parser-tree.ts

@@ -1,192 +0,0 @@
-#!/usr/bin/env bun
-
-// WARNING: [[ No human has been anywhere near this file. It's pure Claude slop.
-//             Enter at your own risk. ]]
-
-import { readFileSync } from 'fs'
-
-type CallInfo = {
-  method: string
-  line: number
-  calls: Set<string>
-  isRecursive?: boolean
-}
-
-// Parse the parser file and extract method calls
-function analyzeParser(filePath: string): Map<string, CallInfo> {
-  const content = readFileSync(filePath, 'utf-8')
-  const lines = content.split('\n')
-  const methods = new Map<string, CallInfo>()
-
-  // Find all method definitions
-  const methodRegex = /^\s*(\w+)\s*\([^)]*\):\s*/
-
-  let currentMethod: string | null = null
-  let braceDepth = 0
-  let classDepth = 0
-
-  for (let i = 0; i < lines.length; i++) {
-    const line = lines[i] || ''
-
-    // Track if we're inside the Parser class
-    if (line.includes('class Parser')) {
-      classDepth = braceDepth + 1 // Will be the depth after we process this line's brace
-    }
-
-    // Check for method definition (only inside class, at class level)
-    // Check BEFORE incrementing braceDepth
-    if (classDepth > 0 && braceDepth === classDepth) {
-      const methodMatch = line.match(methodRegex)
-      if (methodMatch && !line.includes('class ')) {
-        currentMethod = methodMatch[1]!
-        methods.set(currentMethod, {
-          method: currentMethod,
-          line: i + 1,
-          calls: new Set(),
-        })
-      }
-    }
-
-    // Track brace depth
-    braceDepth += (line.match(/{/g) || []).length
-    braceDepth -= (line.match(/}/g) || []).length
-
-    // Find method calls within current method
-    if (currentMethod && braceDepth > 0) {
-      // Match this.methodName() calls
-      const callRegex = /this\.(\w+)\s*\(/g
-      let match
-      while ((match = callRegex.exec(line)) !== null) {
-        const calledMethod = match[1]!
-        const info = methods.get(currentMethod)!
-        info.calls.add(calledMethod)
-
-        // Mark recursive calls
-        if (calledMethod === currentMethod) {
-          info.isRecursive = true
-        }
-      }
-    }
-
-    // Reset when method ends
-    if (braceDepth === 0) {
-      currentMethod = null
-    }
-  }
-
-  return methods
-}
-
-// Build tree structure starting from a root method
-function buildTree(
-  method: string,
-  callGraph: Map<string, CallInfo>,
-  visited: Set<string>,
-  indent = '',
-  isLast = true,
-  depth = 0,
-  maxDepth = 3,
-): string[] {
-  const lines: string[] = []
-  const info = callGraph.get(method)
-
-  if (!info) return lines
-
-  // Add current method
-  const prefix = depth === 0 ? '' : isLast ? '└─> ' : '├─> '
-  const suffix = info.isRecursive ? ' (recursive)' : ''
-  const lineNum = `[line ${info.line}]`
-  lines.push(`${indent}${prefix}${method}() ${lineNum}${suffix}`)
-
-  // Stop if we've reached max depth
-  if (depth >= maxDepth) {
-    return lines
-  }
-
-  // Prevent infinite recursion in tree display
-  if (visited.has(method)) {
-    return lines
-  }
-
-  const newVisited = new Set(visited)
-  newVisited.add(method)
-
-  // Helper methods to filter out (low-level utilities)
-  const helperPatterns = /^(is|next|peek|expect|current|op)/i
-
-  // Get sorted unique calls (filter out recursive self-calls for display)
-  const calls = Array.from(info.calls)
-    .filter((c) => callGraph.has(c)) // Only show parser methods
-    .filter((c) => c !== method) // Don't show immediate self-recursion
-    .filter((c) => !helperPatterns.test(c)) // Filter out helpers
-    .sort()
-
-  // Add children
-  const newIndent = indent + (isLast ? '     ' : '│    ')
-  calls.forEach((call, idx) => {
-    const childLines = buildTree(
-      call,
-      callGraph,
-      newVisited,
-      newIndent,
-      idx === calls.length - 1,
-      depth + 1,
-      maxDepth,
-    )
-    lines.push(...childLines)
-  })
-
-  return lines
-}
-
-// Main
-const parserPath = './src/parser/parser2.ts'
-const maxDepth = parseInt(process.argv[2] || '5')
-
-console.log('Parser Call Tree for', parserPath)
-console.log(`Max depth: ${maxDepth}`)
-console.log('═'.repeat(60))
-console.log()
-
-const callGraph = analyzeParser(parserPath)
-
-// Start from parse() method
-const tree = buildTree('parse', callGraph, new Set(), '', true, 0, maxDepth)
-console.log(tree.join('\n'))
-
-// Show some stats
-console.log('\n' + '═'.repeat(60))
-console.log('Stats:')
-console.log(`  Total methods: ${callGraph.size}`)
-console.log(`  Entry point: parse()`)
-
-// Find methods that are never called (potential dead code or entry points)
-const allCalled = new Set<string>()
-for (const info of callGraph.values()) {
-  info.calls.forEach((c) => allCalled.add(c))
-}
-
-const uncalled = Array.from(callGraph.keys())
-  .filter((m) => !allCalled.has(m) && m !== 'parse')
-  .sort()
-
-if (uncalled.length > 0) {
-  console.log(`\n  Uncalled methods: ${uncalled.join(', ')}`)
-}
-
-// Find most-called methods
-const callCount = new Map<string, number>()
-for (const info of callGraph.values()) {
-  for (const called of info.calls) {
-    callCount.set(called, (callCount.get(called) || 0) + 1)
-  }
-}
-
-const topCalled = Array.from(callCount.entries())
-  .sort((a, b) => b[1] - a[1])
-  .slice(0, 5)
-
-console.log(`\n  Most-called methods:`)
-for (const [method, count] of topCalled) {
-  console.log(`    ${method}() - called ${count} times`)
-}

bin/repl

@@ -7,9 +7,6 @@ import * as readline from 'readline'
 import { readFileSync, writeFileSync } from 'fs'
 import { basename } from 'path'
 
-globals.$.script.name = '(repl)'
-globals.$.script.path = '(repl)'
-
 async function repl() {
   const commands = ['/clear', '/reset', '/vars', '/funcs', '/history', '/bytecode', '/exit', '/save', '/quit']
 
@@ -148,7 +145,7 @@ async function repl() {
     }
 
     try {
-      const compiler = new Compiler(trimmed, [...Object.keys(globals), ...vm.vars()])
+      const compiler = new Compiler(trimmed, Object.keys(globals))
 
       // Save VM state before appending bytecode, in case execution fails
       const savedInstructions = [...vm.instructions]
@@ -238,7 +235,7 @@ async function loadFile(filePath: string): Promise<{ vm: VM; codeHistory: string
       if (!trimmed) continue
 
       try {
-        const compiler = new Compiler(trimmed, [...Object.keys(globals), ...vm.vars()])
+        const compiler = new Compiler(trimmed)
         vm.appendBytecode(compiler.bytecode)
         await vm.continue()
         codeHistory.push(trimmed)

bin/shrimp

@@ -1,83 +1,71 @@
 #!/usr/bin/env bun
 
-import { colors, globals as prelude } from '../src/prelude'
+import { Compiler } from '../src/compiler/compiler'
-import { treeToString2 } from '../src/utils/tree'
+import { colors, globals } from '../src/prelude'
-import { runCode, runFile, compileFile, parseCode } from '../src'
+import { parser } from '../src/parser/shrimp'
-import { resolve } from 'path'
+import { treeToString } from '../src/utils/tree'
-import { bytecodeToString } from 'reefvm'
+import { VM, fromValue, bytecodeToString } from 'reefvm'
-import { readFileSync } from 'fs'
+import { readFileSync, writeFileSync, mkdirSync } from 'fs'
+import { randomUUID } from 'crypto'
 import { spawn } from 'child_process'
 import { join } from 'path'
 
+async function runFile(filePath: string) {
+  try {
+    const code = readFileSync(filePath, 'utf-8')
+    const compiler = new Compiler(code, Object.keys(globals))
+    const vm = new VM(compiler.bytecode, globals)
+    await vm.run()
+    return vm.stack.length ? fromValue(vm.stack[vm.stack.length - 1]) : null
+  } catch (error: any) {
+    console.error(`${colors.red}Error:${colors.reset} ${error.message}`)
+    process.exit(1)
+  }
+}
+
+async function compileFile(filePath: string) {
+  try {
+    const code = readFileSync(filePath, 'utf-8')
+    const compiler = new Compiler(code)
+    return bytecodeToString(compiler.bytecode)
+  } catch (error: any) {
+    console.error(`${colors.red}Error:${colors.reset} ${error.message}`)
+    process.exit(1)
+  }
+}
+
+async function parseFile(filePath: string) {
+  try {
+    const code = readFileSync(filePath, 'utf-8')
+    const tree = parser.parse(code)
+    return treeToString(tree, code)
+  } catch (error: any) {
+    console.error(`${colors.red}Error:${colors.reset} ${error.message}`)
+    process.exit(1)
+  }
+}
+
 function showHelp() {
   console.log(`${colors.bright}${colors.magenta}🦐 Shrimp${colors.reset} is a scripting language in a shell.
 
-${colors.bright}Usage:${colors.reset} shrimp <command> [options] [...args]
+${colors.bright}Usage:${colors.reset} shrimp <command> [...args]
 
 ${colors.bright}Commands:${colors.reset}
   ${colors.cyan}run      ${colors.yellow}./my-file.sh${colors.reset}    Execute a file with Shrimp
   ${colors.cyan}parse    ${colors.yellow}./my-file.sh${colors.reset}    Print parse tree for Shrimp file
   ${colors.cyan}bytecode ${colors.yellow}./my-file.sh${colors.reset}    Print bytecode for Shrimp file
-  ${colors.cyan}eval     ${colors.yellow}'some code'${colors.reset}     Evaluate a line of Shrimp code
+  ${colors.cyan}eval     ${colors.yellow}'some code'${colors.reset}     Evaluate a line of Shrimp code     
-  ${colors.cyan}print    ${colors.yellow}'some code'${colors.reset}     Evaluate a line of Shrimp code and print the result
   ${colors.cyan}repl${colors.reset}                     Start REPL
   ${colors.cyan}help${colors.reset}                     Print this help message
-  ${colors.cyan}version${colors.reset}                  Print version
+  ${colors.cyan}version${colors.reset}                  Print version`)
-
-${colors.bright}Options:${colors.reset}
-  ${colors.cyan}eval -I${colors.reset} ${colors.yellow}<module>${colors.reset}         Import module (can be repeated)
-                           Example: shrimp -I math -e 'random | echo'
-                           Example: shrimp -Imath -Istr -e 'random | echo'`)
 }
 
 function showVersion() {
-  console.log('🦐 v0.0.1 (non-lezer parser)')
+  console.log('🦐 v0.0.1')
-}
-
-async function evalCode(code: string, imports: string[]) {
-  const idx = Bun.argv.indexOf('--')
-  prelude.$.args = idx >= 0 ? Bun.argv.slice(idx + 1) : []
-
-  const importStatement = imports.length > 0 ? `import ${imports.join(' ')}` : ''
-  if (importStatement) code = `${importStatement}; ${code}`
-  return await runCode(code)
 }
 
 async function main() {
-  let args = process.argv.slice(2)
+  const args = process.argv.slice(2)
-
-  if (args.length === 0) {
-    showHelp()
-    return
-  }
-
-  // Parse -I flags for imports (supports both "-I math" and "-Imath")
-  const imports: string[] = []
-
-  while (args.length > 0) {
-    const arg = args[0]
-
-    if (arg === '-I') {
-      // "-I math" format
-      if (args.length < 2) {
-        console.log(`${colors.bright}error: -I requires a module name${colors.reset}`)
-        process.exit(1)
-      }
-      imports.push(args[1])
-      args = args.slice(2)
-    } else if (arg.startsWith('-I')) {
-      // "-Imath" format
-      const moduleName = arg.slice(2)
-      if (!moduleName) {
-        console.log(`${colors.bright}error: -I requires a module name${colors.reset}`)
-        process.exit(1)
-      }
-      imports.push(moduleName)
-      args = args.slice(1)
-    } else {
-      break
-    }
-  }
 
   if (args.length === 0) {
     showHelp()
@@ -111,18 +99,10 @@ async function main() {
       process.exit(1)
     }
 
-    await evalCode(code, imports)
+    try { mkdirSync('/tmp/shrimp') } catch { }
-    return
+    const path = `/tmp/shrimp/${randomUUID()}.sh`
-  }
+    writeFileSync(path, code)
-
+    console.log(await runFile(path))
-  if (['print', '-print', '--print', '-E'].includes(command)) {
-    const code = args[1]
-    if (!code) {
-      console.log(`${colors.bright}usage: shrimp print <code>${colors.reset}`)
-      process.exit(1)
-    }
-
-    console.log(await evalCode(code, imports))
     return
   }
 
@@ -132,7 +112,7 @@ async function main() {
       console.log(`${colors.bright}usage: shrimp bytecode <file>${colors.reset}`)
       process.exit(1)
     }
-    console.log(bytecodeToString(compileFile(file)))
+    console.log(await compileFile(file))
     return
   }
 
@@ -142,8 +122,7 @@ async function main() {
       console.log(`${colors.bright}usage: shrimp parse <file>${colors.reset}`)
       process.exit(1)
     }
-    const input = readFileSync(file, 'utf-8')
+    console.log(await parseFile(file))
-    console.log(treeToString2(parseCode(input).topNode, input))
     return
   }
 
@@ -153,12 +132,10 @@ async function main() {
       console.log(`${colors.bright}usage: shrimp run <file>${colors.reset}`)
       process.exit(1)
     }
-    prelude.$.script.path = resolve(file)
     await runFile(file)
     return
   }
 
-  prelude.$.script.path = resolve(command)
   await runFile(command)
 }
 

bun.lock

@@ -16,8 +16,6 @@
         "@lezer/highlight": "^1.2.1",
         "@lezer/lr": "^1.4.2",
         "@types/bun": "latest",
-        "diff": "^8.0.2",
-        "kleur": "^4.1.5",
       },
     },
   },
@@ -46,7 +44,7 @@
 
     "@marijn/find-cluster-break": ["@marijn/find-cluster-break@1.0.2", "", {}, "sha512-l0h88YhZFyKdXIFNfSWpyjStDjGHwZ/U7iobcK1cQQD8sejsONdQtTVU+1wVN1PBw40PiiHB1vA5S7VTfQiP9g=="],
 
-    "@types/bun": ["@types/bun@1.3.2", "", { "dependencies": { "bun-types": "1.3.2" } }, "sha512-t15P7k5UIgHKkxwnMNkJbWlh/617rkDGEdSsDbu+qNHTaz9SKf7aC8fiIlUdD5RPpH6GEkP0cK7WlvmrEBRtWg=="],
+    "@types/bun": ["@types/bun@1.3.1", "", { "dependencies": { "bun-types": "1.3.1" } }, "sha512-4jNMk2/K9YJtfqwoAa28c8wK+T7nvJFOjxI4h/7sORWcypRNxBpr+TPNaCfVWq70tLCJsqoFwcf0oI0JU/fvMQ=="],
 
     "@types/node": ["@types/node@24.10.0", "", { "dependencies": { "undici-types": "~7.16.0" } }, "sha512-qzQZRBqkFsYyaSWXuEHc2WR9c0a0CXwiE5FWUvn7ZM+vdy1uZLfCunD38UzhuB7YN/J11ndbDBcTmOdxJo9Q7A=="],
 
@@ -54,7 +52,7 @@
 
     "bun-plugin-tailwind": ["bun-plugin-tailwind@0.0.15", "", { "peerDependencies": { "typescript": "^5.0.0" } }, "sha512-qtAXMNGG4R0UGGI8zWrqm2B7BdXqx48vunJXBPzfDOHPA5WkRUZdTSbE7TFwO4jLhYqSE23YMWsM9NhE6ovobw=="],
 
-    "bun-types": ["bun-types@1.3.2", "", { "dependencies": { "@types/node": "*" }, "peerDependencies": { "@types/react": "^19" } }, "sha512-i/Gln4tbzKNuxP70OWhJRZz1MRfvqExowP7U6JKoI8cntFrtxg7RJK3jvz7wQW54UuvNC8tbKHHri5fy74FVqg=="],
+    "bun-types": ["bun-types@1.3.1", "", { "dependencies": { "@types/node": "*" }, "peerDependencies": { "@types/react": "^19" } }, "sha512-NMrcy7smratanWJ2mMXdpatalovtxVggkj11bScuWuiOoXTiKIu2eVS1/7qbyI/4yHedtsn175n4Sm4JcdHLXw=="],
 
     "codemirror": ["codemirror@6.0.2", "", { "dependencies": { "@codemirror/autocomplete": "^6.0.0", "@codemirror/commands": "^6.0.0", "@codemirror/language": "^6.0.0", "@codemirror/lint": "^6.0.0", "@codemirror/search": "^6.0.0", "@codemirror/state": "^6.0.0", "@codemirror/view": "^6.0.0" } }, "sha512-VhydHotNW5w1UGK0Qj96BwSk/Zqbp9WbnyK2W/eVMv4QyF41INRGpjUhFJY7/uDNuudSc33a/PKr4iDqRduvHw=="],
 
@@ -62,17 +60,13 @@
 
     "csstype": ["csstype@3.1.3", "", {}, "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw=="],
 
-    "diff": ["diff@8.0.2", "", {}, "sha512-sSuxWU5j5SR9QQji/o2qMvqRNYRDOcBTgsJ/DeCf4iSN4gW+gNMXM7wFIP+fdXZxoNiAnHUTGjCr+TSWXdRDKg=="],
-
     "hono": ["hono@4.10.4", "", {}, "sha512-YG/fo7zlU3KwrBL5vDpWKisLYiM+nVstBQqfr7gCPbSYURnNEP9BDxEMz8KfsDR9JX0lJWDRNc6nXX31v7ZEyg=="],
 
-    "kleur": ["kleur@4.1.5", "", {}, "sha512-o+NO+8WrRiQEE4/7nwRJhN1HWpVmJm511pBHUxPLtp0BUISzlBplORYSmTclCnJvQq2tKu/sgl3xVpkc7ZWuQQ=="],
+    "reefvm": ["reefvm@git+https://git.nose.space/defunkt/reefvm#bffb83a5280a4d74e424c4e0f4fbd46f790227a3", { "peerDependencies": { "typescript": "^5" } }, "bffb83a5280a4d74e424c4e0f4fbd46f790227a3"],
-
-    "reefvm": ["reefvm@git+https://git.nose.space/defunkt/reefvm#3e2e68b31f504347225a4d705c7568a0957d629e", { "peerDependencies": { "typescript": "^5" } }, "3e2e68b31f504347225a4d705c7568a0957d629e"],
 
     "style-mod": ["style-mod@4.1.3", "", {}, "sha512-i/n8VsZydrugj3Iuzll8+x/00GH2vnYsk1eomD8QiRrSAeW6ItbCQDtfXCeJHd0iwiNagqjQkvpvREEPtW3IoQ=="],
 
-    "tailwindcss": ["tailwindcss@4.1.17", "", {}, "sha512-j9Ee2YjuQqYT9bbRTfTZht9W/ytp5H+jJpZKiYdP/bpnXARAuELt9ofP0lPnmHjbga7SNQIxdTAXCmtKVYjN+Q=="],
+    "tailwindcss": ["tailwindcss@4.1.16", "", {}, "sha512-pONL5awpaQX4LN5eiv7moSiSPd/DLDzKVRJz8Q9PgzmAdd1R4307GQS2ZpfiN7ZmekdQrfhZZiSE5jkLR4WNaA=="],
 
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
 

examples/d20.sh

@@ -1,18 +0,0 @@
-#!/usr/bin/env shrimp
-# usage: dice <sides>
-
-import math only=random
-import list only=first
-import str only=[replace starts-with?]
-
-sides = $.args | first 
-sides ??= 20
-
-if sides | starts-with? d: 
-  sides = replace sides //\D// ''
-end
-
-sides = number sides 
-
-echo 'Rolling d$sides...'
-random 1 sides | echo

examples/find.shrimp

@@ -1 +0,0 @@
-echo 

examples/license.sh

@@ -1,31 +0,0 @@
-#!/usr/bin/env shrimp
-
-year = date.now | date.year
-project = fs.pwd | fs.basename | str.titlecase
-
-{
-
-Copyright $year $project Authors
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the “Software”), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-IN THE SOFTWARE.
-
-}
-
-| str.trim
-| echo

examples/password.sh

@@ -1,39 +0,0 @@
-#!/usr/bin/env shrimp
-# usage: password <length> [!spaced] [!symbols]
-
-if ($.args | list.contains? -h):
-  echo 'usage: password <length> [!spaced] [!symbols]'
-  exit
-end
-
-password = do n=22 symbols=true spaced=true:
-  chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
-  if symbols: chars += '!@#%^&*-=()[]<>' end
-
-  out = []
-  i = 0
-  max = length chars
-
-  while i < n:
-    idx = math.floor ((math.random) * max)
-    ch = chars | at idx
-    list.push out ch
-    i += 1
-  end
-
-  if spaced:
-    pos1 = math.floor((n - 2) / 3)
-    pos2 = math.floor((n - 2) * 2 / 3)
-
-    list.insert out pos2 ' '
-    list.insert out pos1 ' '
-  end
-
-  str.join out ''
-end
-
-missing-arg? = do x: $.args | list.contains? x | not end
-
-num = $.args | list.reject (do x: x | str.starts-with? ! end) | list.first
-
-password num symbols=(missing-arg? !symbols) spaced=(missing-arg? !spaced) | echo

examples/scripts.sh

@@ -1,9 +0,0 @@
-#!/usr/bin/env shrimp
-
-if not fs.exists? 'package.json':
-  echo '🦐 package.json not found'
-  exit 1
-end
-
-package = fs.read 'package.json' | json.decode
-package.scripts | dict.keys | list.sort | each do x: echo x end

package.json

@@ -1,20 +1,14 @@
 {
   "name": "shrimp",
   "version": "0.1.0",
-  "exports": {
+  "exports": "./src/index.ts",
-    ".": "./src/index.ts",
-    "./editor": "./src/editor/index.ts",
-    "./editor.css": "./src/editor/editor.css"
-  },
   "private": true,
   "type": "module",
   "scripts": {
-    "editor": "bun --hot src/editor/example/server.tsx",
+    "dev": "bun generate-parser && bun --hot src/server/server.tsx",
-    "repl": "bun bin/repl",
+    "generate-parser": "lezer-generator src/parser/shrimp.grammar --typeScript -o src/parser/shrimp.ts",
-    "update-reef": "rm -rf ~/.bun/install/cache/ && rm bun.lock && bun update reefvm",
+    "repl": "bun generate-parser && bun bin/repl",
-    "cli:install": "ln -s \"$(pwd)/bin/shrimp\" ~/.bun/bin/shrimp",
+    "update-reef": "rm -rf ~/.bun/install/cache/ && rm bun.lock && bun update reefvm"
-    "cli:remove": "rm ~/.bun/bin/shrimp",
-    "check": "bunx tsc --noEmit"
   },
   "dependencies": {
     "@codemirror/view": "^6.38.3",
@@ -28,9 +22,7 @@
   "devDependencies": {
     "@lezer/highlight": "^1.2.1",
     "@lezer/lr": "^1.4.2",
-    "@types/bun": "latest",
+    "@types/bun": "latest"
-    "diff": "^8.0.2",
-    "kleur": "^4.1.5"
   },
   "prettier": {
     "semi": false,

src/compiler/compiler.ts

@@ -1,7 +1,8 @@
 import { CompilerError } from '#compiler/compilerError.ts'
-import { parse, setGlobals } from '#parser/parser2'
+import { parser } from '#parser/shrimp.ts'
-import { SyntaxNode, Tree } from '#parser/node'
+import * as terms from '#parser/shrimp.terms'
-import { tokenizeCurlyString } from '#parser/curlyTokenizer'
+import { setGlobals } from '#parser/tokenizer'
+import type { SyntaxNode, Tree } from '@lezer/common'
 import { assert, errorMessage } from '#utils/utils'
 import { toBytecode, type Bytecode, type ProgramItem, bytecodeToString } from 'reefvm'
 import {
@@ -50,23 +51,17 @@ function processEscapeSeq(escapeSeq: string): string {
 
 export class Compiler {
   instructions: ProgramItem[] = []
-  labelCount = 0
   fnLabelCount = 0
   ifLabelCount = 0
   tryLabelCount = 0
   loopLabelCount = 0
   bytecode: Bytecode
   pipeCounter = 0
-  pipeVarStack: string[] = [] // Stack of pipe variable names for nested pipes
 
-  constructor(
+  constructor(public input: string, globals?: string[]) {
-    public input: string,
-    globals?: string[] | Record<string, any>,
-  ) {
     try {
-      if (globals) setGlobals(Array.isArray(globals) ? globals : Object.keys(globals))
+      if (globals) setGlobals(globals)
-      const ast = parse(input)
+      const cst = parser.parse(input)
-      const cst = new Tree(ast)
       const errors = checkTreeForErrors(cst)
 
       const firstError = errors[0]
@@ -92,7 +87,7 @@ export class Compiler {
   }
 
   #compileCst(cst: Tree, input: string) {
-    const isProgram = cst.topNode.type.is('Program')
+    const isProgram = cst.topNode.type.id === terms.Program
     assert(isProgram, `Expected Program node, got ${cst.topNode.type.name}`)
 
     let child = cst.topNode.firstChild
@@ -108,33 +103,15 @@ export class Compiler {
     const value = input.slice(node.from, node.to)
     if (DEBUG) console.log(`🫦  ${node.name}: ${value}`)
 
-    switch (node.type.name) {
+    switch (node.type.id) {
-      case 'Number':
+      case terms.Number:
-        // Handle sign prefix for hex, binary, and octal literals
+        const number = Number(value)
-        // Number() doesn't parse '-0xFF', '+0xFF', '-0o77', etc. correctly
+        if (Number.isNaN(number))
-        let numberValue: number
-        if (
-          value.startsWith('-') &&
-          (value.includes('0x') || value.includes('0b') || value.includes('0o'))
-        ) {
-          numberValue = -Number(value.slice(1))
-        } else if (
-          value.startsWith('+') &&
-          (value.includes('0x') || value.includes('0b') || value.includes('0o'))
-        ) {
-          numberValue = Number(value.slice(1))
-        } else {
-          numberValue = Number(value)
-        }
-
-        if (Number.isNaN(numberValue))
           throw new CompilerError(`Invalid number literal: ${value}`, node.from, node.to)
 
-        return [[`PUSH`, numberValue]]
+        return [[`PUSH`, number]]
-
-      case 'String': {
-        if (node.firstChild?.type.is('CurlyString')) return this.#compileCurlyString(value, input)
 
+      case terms.String: {
         const { parts, hasInterpolation } = getStringParts(node, input)
 
         // Simple string without interpolation or escapes - extract text directly
@@ -149,19 +126,19 @@ export class Compiler {
         parts.forEach((part) => {
           const partValue = input.slice(part.from, part.to)
 
-          switch (part.type.name) {
+          switch (part.type.id) {
-            case 'StringFragment':
+            case terms.StringFragment:
               // Plain text fragment - just push as-is
               instructions.push(['PUSH', partValue])
               break
 
-            case 'EscapeSeq':
+            case terms.EscapeSeq:
               // Process escape sequence and push the result
               const processed = processEscapeSeq(partValue)
               instructions.push(['PUSH', processed])
               break
 
-            case 'Interpolation':
+            case terms.Interpolation:
               // Interpolation contains either Identifier or ParenExpr (the $ is anonymous)
               const child = part.firstChild
               if (!child) {
@@ -175,7 +152,7 @@ export class Compiler {
               throw new CompilerError(
                 `Unexpected string part: ${part.type.name}`,
                 part.from,
-                part.to,
+                part.to
               )
           }
         })
@@ -185,15 +162,15 @@ export class Compiler {
         return instructions
       }
 
-      case 'Boolean': {
+      case terms.Boolean: {
         return [[`PUSH`, value === 'true']]
       }
 
-      case 'Null': {
+      case terms.Null: {
         return [[`PUSH`, null]]
       }
 
-      case 'Regex': {
+      case terms.Regex: {
         // remove the surrounding slashes and any flags
         const [_, pattern, flags] = value.match(/^\/\/(.*)\/\/([gimsuy]*)$/) || []
         if (!pattern) {
@@ -210,50 +187,29 @@ export class Compiler {
         return [['PUSH', regex]]
       }
 
-      case 'Identifier': {
+      case terms.Identifier: {
         return [[`TRY_LOAD`, value]]
       }
 
-      case 'Word': {
+      case terms.Word: {
         return [['PUSH', value]]
       }
 
-      case 'DotGet': {
+      case terms.DotGet: {
-        // DotGet is parsed into a nested tree because it's hard to parse it into a flat one.
-        // However, we want a flat tree - so we're going to pretend like we are getting one from the parser.
-        //
-        //    This: DotGet(config, DotGet(script, name))
-        // Becomes: DotGet(config, script, name)
         const { objectName, property } = getDotGetParts(node, input)
         const instructions: ProgramItem[] = []
-
         instructions.push(['TRY_LOAD', objectName])
-
+        if (property.type.id === terms.ParenExpr) {
-        const flattenProperty = (prop: SyntaxNode): void => {
+          instructions.push(...this.#compileNode(property, input))
-          if (prop.type.is('DotGet')) {
+        } else {
-            const nestedParts = getDotGetParts(prop, input)
+          const propertyValue = input.slice(property.from, property.to)
-
+          instructions.push(['PUSH', propertyValue])
-            const nestedObjectValue = input.slice(nestedParts.object.from, nestedParts.object.to)
-            instructions.push(['PUSH', nestedObjectValue])
-            instructions.push(['DOT_GET'])
-
-            flattenProperty(nestedParts.property)
-          } else {
-            if (prop.type.is('ParenExpr')) {
-              instructions.push(...this.#compileNode(prop, input))
-            } else {
-              const propertyValue = input.slice(prop.from, prop.to)
-              instructions.push(['PUSH', propertyValue])
-            }
-            instructions.push(['DOT_GET'])
-          }
         }
-
+        instructions.push(['DOT_GET'])
-        flattenProperty(property)
         return instructions
       }
 
-      case 'BinOp': {
+      case terms.BinOp: {
         const { left, op, right } = getBinaryParts(node)
         const instructions: ProgramItem[] = []
         instructions.push(...this.#compileNode(left, input))
@@ -276,24 +232,6 @@ export class Compiler {
           case '%':
             instructions.push(['MOD'])
             break
-          case 'band':
-            instructions.push(['BIT_AND'])
-            break
-          case 'bor':
-            instructions.push(['BIT_OR'])
-            break
-          case 'bxor':
-            instructions.push(['BIT_XOR'])
-            break
-          case '<<':
-            instructions.push(['BIT_SHL'])
-            break
-          case '>>':
-            instructions.push(['BIT_SHR'])
-            break
-          case '>>>':
-            instructions.push(['BIT_USHR'])
-            break
           default:
             throw new CompilerError(`Unsupported binary operator: ${opValue}`, op.from, op.to)
         }
@@ -301,7 +239,7 @@ export class Compiler {
         return instructions
       }
 
-      case 'Assign': {
+      case terms.Assign: {
         const assignParts = getAssignmentParts(node)
         const instructions: ProgramItem[] = []
 
@@ -332,37 +270,17 @@ export class Compiler {
         return instructions
       }
 
-      case 'CompoundAssign': {
+      case terms.CompoundAssign: {
         const { identifier, operator, right } = getCompoundAssignmentParts(node)
         const identifierName = input.slice(identifier.from, identifier.to)
         const instructions: ProgramItem[] = []
-        const opValue = input.slice(operator.from, operator.to)
 
-        // Special handling for ??= since it needs conditional evaluation
+        // will throw if undefined
-        if (opValue === '??=') {
+        instructions.push(['LOAD', identifierName])
-          instructions.push(['LOAD', identifierName])
 
-          const skipLabel: Label = `.skip_${this.labelCount++}`
-          const rightInstructions = this.#compileNode(right, input)
-
-          instructions.push(['DUP'])
-          instructions.push(['PUSH', null])
-          instructions.push(['NEQ'])
-          instructions.push(['JUMP_IF_TRUE', skipLabel])
-          instructions.push(['POP'])
-          instructions.push(...rightInstructions)
-
-          instructions.push([`${skipLabel}:`])
-          instructions.push(['DUP'])
-          instructions.push(['STORE', identifierName])
-
-          return instructions
-        }
-
-        // Standard compound assignments: evaluate both sides, then operate
-        instructions.push(['LOAD', identifierName]) // will throw if undefined
         instructions.push(...this.#compileNode(right, input))
 
+        const opValue = input.slice(operator.from, operator.to)
         switch (opValue) {
           case '+=':
             instructions.push(['ADD'])
@@ -383,7 +301,7 @@ export class Compiler {
             throw new CompilerError(
               `Unknown compound operator: ${opValue}`,
               operator.from,
-              operator.to,
+              operator.to
             )
         }
 
@@ -394,14 +312,14 @@ export class Compiler {
         return instructions
       }
 
-      case 'ParenExpr': {
+      case terms.ParenExpr: {
         const child = node.firstChild
         if (!child) return [] // I guess it is empty parentheses?
 
         return this.#compileNode(child, input)
       }
 
-      case 'FunctionDef': {
+      case terms.FunctionDef: {
         const { paramNames, bodyNodes, catchVariable, catchBody, finallyBody } =
           getFunctionDefParts(node, input)
         const instructions: ProgramItem[] = []
@@ -431,8 +349,8 @@ export class Compiler {
               catchVariable,
               catchBody,
               finallyBody,
-              input,
+              input
-            ),
+            )
           )
         } else {
           instructions.push(...compileFunctionBody())
@@ -447,31 +365,9 @@ export class Compiler {
         return instructions
       }
 
-      case 'FunctionCallOrIdentifier': {
+      case terms.FunctionCallOrIdentifier: {
-        if (node.firstChild?.type.is('DotGet')) {
+        if (node.firstChild?.type.id === terms.DotGet) {
-          const instructions: ProgramItem[] = []
+          return this.#compileNode(node.firstChild, input)
-          const callLabel: Label = `.call_dotget_${++this.labelCount}`
-          const afterLabel: Label = `.after_dotget_${++this.labelCount}`
-
-          instructions.push(...this.#compileNode(node.firstChild, input))
-          instructions.push(['DUP'])
-          instructions.push(['TYPE'])
-          instructions.push(['PUSH', 'function'])
-          instructions.push(['EQ'])
-          instructions.push(['JUMP_IF_TRUE', callLabel])
-          instructions.push(['DUP'])
-          instructions.push(['TYPE'])
-          instructions.push(['PUSH', 'native'])
-          instructions.push(['EQ'])
-          instructions.push(['JUMP_IF_TRUE', callLabel])
-          instructions.push(['JUMP', afterLabel])
-          instructions.push([`${callLabel}:`])
-          instructions.push(['PUSH', 0])
-          instructions.push(['PUSH', 0])
-          instructions.push(['CALL'])
-          instructions.push([`${afterLabel}:`])
-
-          return instructions
         }
 
         return [['TRY_CALL', value]]
@@ -490,8 +386,7 @@ export class Compiler {
       PUSH 1              ; Named count
       CALL
       */
-
+      case terms.FunctionCall: {
-      case 'FunctionCall': {
         const { identifierNode, namedArgs, positionalArgs } = getFunctionCallParts(node, input)
         const instructions: ProgramItem[] = []
         instructions.push(...this.#compileNode(identifierNode, input))
@@ -513,7 +408,7 @@ export class Compiler {
         return instructions
       }
 
-      case 'Block': {
+      case terms.Block: {
         const children = getAllChildren(node)
         const instructions: ProgramItem[] = []
 
@@ -528,7 +423,7 @@ export class Compiler {
         return instructions
       }
 
-      case 'FunctionCallWithBlock': {
+      case terms.FunctionCallWithBlock: {
         const [fn, _colon, ...block] = getAllChildren(node)
         let instructions: ProgramItem[] = []
 
@@ -541,18 +436,18 @@ export class Compiler {
           ...block
             .filter((x) => x.type.name !== 'keyword')
             .map((x) => this.#compileNode(x!, input))
-            .flat(),
+            .flat()
         )
         instructions.push(['RETURN'])
         instructions.push([`${afterLabel}:`])
 
-        if (fn?.type.is('FunctionCallOrIdentifier')) {
+        if (fn?.type.id === terms.FunctionCallOrIdentifier) {
           instructions.push(['LOAD', input.slice(fn!.from, fn!.to)])
           instructions.push(['MAKE_FUNCTION', [], fnLabel])
           instructions.push(['PUSH', 1])
           instructions.push(['PUSH', 0])
           instructions.push(['CALL'])
-        } else if (fn?.type.is('FunctionCall')) {
+        } else if (fn?.type.id === terms.FunctionCall) {
           let body = this.#compileNode(fn!, input)
           const namedArgCount = (body[body.length - 2]![1] as number) * 2
           const startSlice = body.length - namedArgCount - 3
@@ -568,14 +463,14 @@ export class Compiler {
           instructions.push(...body)
         } else {
           throw new Error(
-            `FunctionCallWithBlock: Expected FunctionCallOrIdentifier or FunctionCall`,
+            `FunctionCallWithBlock: Expected FunctionCallOrIdentifier or FunctionCall`
           )
         }
 
         return instructions
       }
 
-      case 'TryExpr': {
+      case terms.TryExpr: {
         const { tryBlock, catchVariable, catchBody, finallyBody } = getTryExprParts(node, input)
 
         return this.#compileTryCatchFinally(
@@ -583,57 +478,50 @@ export class Compiler {
           catchVariable,
           catchBody,
           finallyBody,
-          input,
+          input
         )
       }
 
-      case 'Throw':
+      case terms.Throw: {
-      case 'Not': {
-        const keyword = node.type.is('Throw') ? 'Throw' : 'Not'
         const children = getAllChildren(node)
         const [_throwKeyword, expression] = children
         if (!expression) {
           throw new CompilerError(
-            `${keyword} expected expression, got ${children.length} children`,
+            `Throw expected expression, got ${children.length} children`,
             node.from,
-            node.to,
+            node.to
           )
         }
 
         const instructions: ProgramItem[] = []
         instructions.push(...this.#compileNode(expression, input))
-        instructions.push([keyword.toUpperCase()]) // THROW or NOT
+        instructions.push(['THROW'])
 
         return instructions
       }
 
-      case 'IfExpr': {
+      case terms.IfExpr: {
         const { conditionNode, thenBlock, elseIfBlocks, elseThenBlock } = getIfExprParts(
           node,
-          input,
+          input
         )
         const instructions: ProgramItem[] = []
         instructions.push(...this.#compileNode(conditionNode, input))
         this.ifLabelCount++
         const endLabel: Label = `.end_${this.ifLabelCount}`
-        const elseLabel: Label = `.else_${this.ifLabelCount}`
 
         const thenBlockInstructions = this.#compileNode(thenBlock, input)
-        instructions.push(['JUMP_IF_FALSE', elseLabel])
+        instructions.push(['JUMP_IF_FALSE', thenBlockInstructions.length + 1])
         instructions.push(...thenBlockInstructions)
         instructions.push(['JUMP', endLabel])
 
-        instructions.push([`${elseLabel}:`])
-
         // Else if
-        elseIfBlocks.forEach(({ conditional, thenBlock }, index) => {
+        elseIfBlocks.forEach(({ conditional, thenBlock }) => {
           instructions.push(...this.#compileNode(conditional, input))
-          const nextLabel: Label = `.elsif_${this.ifLabelCount}_${index}`
           const elseIfInstructions = this.#compileNode(thenBlock, input)
-          instructions.push(['JUMP_IF_FALSE', nextLabel])
+          instructions.push(['JUMP_IF_FALSE', elseIfInstructions.length + 1])
           instructions.push(...elseIfInstructions)
           instructions.push(['JUMP', endLabel])
-          instructions.push([`${nextLabel}:`])
         })
 
         // Else
@@ -650,7 +538,7 @@ export class Compiler {
       }
 
       // - `EQ`, `NEQ`, `LT`, `GT`, `LTE`, `GTE` - Pop 2, push boolean
-      case 'ConditionalOp': {
+      case terms.ConditionalOp: {
         const instructions: ProgramItem[] = []
         const { left, op, right } = getBinaryParts(node)
         const leftInstructions: ProgramItem[] = this.#compileNode(left, input)
@@ -682,41 +570,22 @@ export class Compiler {
             instructions.push(...leftInstructions, ...rightInstructions, ['GTE'])
             break
 
-          case 'and': {
+          case 'and':
-            const skipLabel: Label = `.skip_${this.labelCount++}`
             instructions.push(...leftInstructions)
             instructions.push(['DUP'])
-            instructions.push(['JUMP_IF_FALSE', skipLabel])
+            instructions.push(['JUMP_IF_FALSE', rightInstructions.length + 1])
             instructions.push(['POP'])
             instructions.push(...rightInstructions)
-            instructions.push([`${skipLabel}:`])
             break
-          }
 
-          case 'or': {
+          case 'or':
-            const skipLabel: Label = `.skip_${this.labelCount++}`
             instructions.push(...leftInstructions)
             instructions.push(['DUP'])
-            instructions.push(['JUMP_IF_TRUE', skipLabel])
+            instructions.push(['JUMP_IF_TRUE', rightInstructions.length + 1])
             instructions.push(['POP'])
             instructions.push(...rightInstructions)
-            instructions.push([`${skipLabel}:`])
-            break
-          }
 
-          case '??': {
-            // Nullish coalescing: return left if not null, else right
-            const skipLabel: Label = `.skip_${this.labelCount++}`
-            instructions.push(...leftInstructions)
-            instructions.push(['DUP'])
-            instructions.push(['PUSH', null])
-            instructions.push(['NEQ'])
-            instructions.push(['JUMP_IF_TRUE', skipLabel])
-            instructions.push(['POP'])
-            instructions.push(...rightInstructions)
-            instructions.push([`${skipLabel}:`])
             break
-          }
 
           default:
             throw new CompilerError(`Unsupported conditional operator: ${opValue}`, op.from, op.to)
@@ -725,7 +594,7 @@ export class Compiler {
         return instructions
       }
 
-      case 'PipeExpr': {
+      case terms.PipeExpr: {
         const { pipedFunctionCall, pipeReceivers } = getPipeExprParts(node)
         if (!pipedFunctionCall || pipeReceivers.length === 0) {
           throw new CompilerError('PipeExpr must have at least two operands', node.from, node.to)
@@ -734,77 +603,67 @@ export class Compiler {
         const instructions: ProgramItem[] = []
         instructions.push(...this.#compileNode(pipedFunctionCall, input))
 
-        // Use a unique variable name for this pipe level to handle nested pipes correctly
         this.pipeCounter++
-        const pipeVarName = `_pipe_${this.pipeCounter}`
+        const pipeValName = `_pipe_value_${this.pipeCounter}`
-        this.pipeVarStack.push(pipeVarName)
-
         pipeReceivers.forEach((pipeReceiver) => {
-          // Store the piped value in the current pipe's variable
+          instructions.push(['STORE', pipeValName])
-          // Also store as `_` for direct access in simple cases
-          instructions.push(['DUP'])
-          instructions.push(['STORE', pipeVarName])
-          instructions.push(['STORE', '_'])
 
-          const isFunctionCall =
+          const { identifierNode, namedArgs, positionalArgs } = getFunctionCallParts(
-            pipeReceiver.type.is('FunctionCall') || pipeReceiver.type.is('FunctionCallOrIdentifier')
+            pipeReceiver,
+            input
+          )
 
-          if (isFunctionCall) {
+          instructions.push(...this.#compileNode(identifierNode, input))
-            // Function call receiver: check for explicit _ usage to determine arg handling
-            const { identifierNode, namedArgs, positionalArgs } = getFunctionCallParts(
-              pipeReceiver,
-              input,
-            )
 
-            instructions.push(...this.#compileNode(identifierNode, input))
+          const isUnderscoreInPositionalArgs = positionalArgs.some(
+            (arg) => arg.type.id === terms.Underscore
+          )
+          const isUnderscoreInNamedArgs = namedArgs.some((arg) => {
+            const { valueNode } = getNamedArgParts(arg, input)
+            return valueNode.type.id === terms.Underscore
+          })
 
-            const isUnderscoreInPositionalArgs = positionalArgs.some((arg) =>
+          const shouldPushPositionalArg = !isUnderscoreInPositionalArgs && !isUnderscoreInNamedArgs
-              arg.type.is('Underscore'),
-            )
-            const isUnderscoreInNamedArgs = namedArgs.some((arg) => {
-              const { valueNode } = getNamedArgParts(arg, input)
-              return valueNode.type.is('Underscore')
-            })
 
-            const shouldPushPositionalArg = !isUnderscoreInPositionalArgs && !isUnderscoreInNamedArgs
+          // If no underscore is explicitly used, add the piped value as the first positional arg
-
+          if (shouldPushPositionalArg) {
-            // If no underscore is explicitly used, add the piped value as the first positional arg
+            instructions.push(['LOAD', pipeValName])
-            if (shouldPushPositionalArg) {
-              instructions.push(['LOAD', pipeVarName])
-            }
-
-            positionalArgs.forEach((arg) => {
-              instructions.push(...this.#compileNode(arg, input))
-            })
-
-            namedArgs.forEach((arg) => {
-              const { name, valueNode } = getNamedArgParts(arg, input)
-              instructions.push(['PUSH', name])
-              instructions.push(...this.#compileNode(valueNode, input))
-            })
-
-            instructions.push(['PUSH', positionalArgs.length + (shouldPushPositionalArg ? 1 : 0)])
-            instructions.push(['PUSH', namedArgs.length])
-            instructions.push(['CALL'])
-          } else {
-            // Non-function-call receiver (Array, ParenExpr, etc.): compile directly
-            // The `_` variable is available for use in nested expressions
-            instructions.push(...this.#compileNode(pipeReceiver, input))
           }
+
+          positionalArgs.forEach((arg) => {
+            if (arg.type.id === terms.Underscore) {
+              instructions.push(['LOAD', pipeValName])
+            } else {
+              instructions.push(...this.#compileNode(arg, input))
+            }
+          })
+
+          namedArgs.forEach((arg) => {
+            const { name, valueNode } = getNamedArgParts(arg, input)
+            instructions.push(['PUSH', name])
+            if (valueNode.type.id === terms.Underscore) {
+              instructions.push(['LOAD', pipeValName])
+            } else {
+              instructions.push(...this.#compileNode(valueNode, input))
+            }
+          })
+
+          instructions.push(['PUSH', positionalArgs.length + (shouldPushPositionalArg ? 1 : 0)])
+          instructions.push(['PUSH', namedArgs.length])
+          instructions.push(['CALL'])
         })
 
-        this.pipeVarStack.pop()
         return instructions
       }
 
-      case 'Array': {
+      case terms.Array: {
         const children = getAllChildren(node)
 
         // We can easily parse [=] as an empty dict, but `[ = ]` is tougher.
         // = can be a valid word, and is also valid inside words, so for now we cheat
         // and check for arrays that look like `[ = ]` to interpret them as
         // empty dicts
-        if (children.length === 1 && children[0]!.type.is('Word')) {
+        if (children.length === 1 && children[0]!.type.id === terms.Word) {
           const child = children[0]!
           if (input.slice(child.from, child.to) === '=') {
             return [['MAKE_DICT', 0]]
@@ -816,7 +675,7 @@ export class Compiler {
         return instructions
       }
 
-      case 'Dict': {
+      case terms.Dict: {
         const children = getAllChildren(node)
         const instructions: ProgramItem[] = []
 
@@ -825,7 +684,7 @@ export class Compiler {
           const valueNode = node.firstChild!.nextSibling
 
           // name= -> name
-          const key = input.slice(keyNode!.from, keyNode!.to).replace(/\s*=$/, '')
+          const key = input.slice(keyNode!.from, keyNode!.to).slice(0, -1)
           instructions.push(['PUSH', key])
 
           instructions.push(...this.#compileNode(valueNode!, input))
@@ -835,7 +694,7 @@ export class Compiler {
         return instructions
       }
 
-      case 'WhileExpr': {
+      case terms.WhileExpr: {
         const [_while, test, _colon, block] = getAllChildren(node)
         const instructions: ProgramItem[] = []
 
@@ -853,45 +712,15 @@ export class Compiler {
         return instructions
       }
 
-      case 'Import': {
+      case terms.Comment: {
-        const instructions: ProgramItem[] = []
-        const [_import, ...nodes] = getAllChildren(node)
-        const args = nodes.filter((node) => node.type.is('Identifier'))
-        const namedArgs = nodes.filter((node) => node.type.is('NamedArg'))
-
-        instructions.push(['LOAD', 'import'])
-
-        args.forEach((dict) => instructions.push(['PUSH', input.slice(dict.from, dict.to)]))
-
-        namedArgs.forEach((arg) => {
-          const { name, valueNode } = getNamedArgParts(arg, input)
-          instructions.push(['PUSH', name])
-          instructions.push(...this.#compileNode(valueNode, input))
-        })
-
-        instructions.push(['PUSH', args.length])
-        instructions.push(['PUSH', namedArgs.length])
-        instructions.push(['CALL'])
-
-        return instructions
-      }
-
-      case 'Comment': {
         return [] // ignore comments
       }
 
-      case 'Underscore': {
-        // _ refers to the piped value for the current (innermost) pipe
-        // Use the stack to handle nested pipes correctly
-        const pipeVar = this.pipeVarStack.at(-1) ?? '_'
-        return [['LOAD', pipeVar]]
-      }
-
       default:
         throw new CompilerError(
           `Compiler doesn't know how to handle a "${node.type.name}" node.`,
           node.from,
-          node.to,
+          node.to
         )
     }
   }
@@ -901,7 +730,7 @@ export class Compiler {
     catchVariable: string | undefined,
     catchBody: SyntaxNode | undefined,
     finallyBody: SyntaxNode | undefined,
-    input: string,
+    input: string
   ): ProgramItem[] {
     const instructions: ProgramItem[] = []
     this.tryLabelCount++
@@ -943,26 +772,4 @@ export class Compiler {
 
     return instructions
   }
-
-  #compileCurlyString(value: string, input: string): ProgramItem[] {
-    const instructions: ProgramItem[] = []
-    const nodes = tokenizeCurlyString(value)
-
-    nodes.forEach((node) => {
-      if (typeof node === 'string') {
-        instructions.push(['PUSH', node])
-      } else {
-        const [input, topNode] = node
-        let child = topNode.firstChild
-        while (child) {
-          instructions.push(...this.#compileNode(child, input))
-          child = child.nextSibling
-        }
-      }
-    })
-
-    instructions.push(['STR_CONCAT', nodes.length])
-
-    return instructions
-  }
 }

src/compiler/compilerError.ts

@@ -1,9 +1,5 @@
 export class CompilerError extends Error {
-  constructor(
+  constructor(message: string, private from: number, private to: number) {
-    message: string,
-    private from: number,
-    private to: number,
-  ) {
     super(message)
 
     if (from < 0 || to < 0 || to < from) {

src/compiler/tests/bitwise.test.ts

@@ -1,178 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('bitwise operators', () => {
-  describe('band (bitwise AND)', () => {
-    test('basic AND operation', () => {
-      expect('5 band 3').toEvaluateTo(1)
-      // 5 = 0101, 3 = 0011, result = 0001 = 1
-    })
-
-    test('AND with zero', () => {
-      expect('5 band 0').toEvaluateTo(0)
-    })
-
-    test('AND with all bits set', () => {
-      expect('15 band 7').toEvaluateTo(7)
-      // 15 = 1111, 7 = 0111, result = 0111 = 7
-    })
-
-    test('AND in assignment', () => {
-      expect('x = 12 band 10').toEvaluateTo(8)
-      // 12 = 1100, 10 = 1010, result = 1000 = 8
-    })
-  })
-
-  describe('bor (bitwise OR)', () => {
-    test('basic OR operation', () => {
-      expect('5 bor 3').toEvaluateTo(7)
-      // 5 = 0101, 3 = 0011, result = 0111 = 7
-    })
-
-    test('OR with zero', () => {
-      expect('5 bor 0').toEvaluateTo(5)
-    })
-
-    test('OR with all bits set', () => {
-      expect('8 bor 4').toEvaluateTo(12)
-      // 8 = 1000, 4 = 0100, result = 1100 = 12
-    })
-  })
-
-  describe('bxor (bitwise XOR)', () => {
-    test('basic XOR operation', () => {
-      expect('5 bxor 3').toEvaluateTo(6)
-      // 5 = 0101, 3 = 0011, result = 0110 = 6
-    })
-
-    test('XOR with itself returns zero', () => {
-      expect('5 bxor 5').toEvaluateTo(0)
-    })
-
-    test('XOR with zero returns same value', () => {
-      expect('7 bxor 0').toEvaluateTo(7)
-    })
-
-    test('XOR in assignment', () => {
-      expect('result = 8 bxor 12').toEvaluateTo(4)
-      // 8 = 1000, 12 = 1100, result = 0100 = 4
-    })
-  })
-
-  describe('bnot (bitwise NOT)', () => {
-    test('NOT of positive number', () => {
-      expect('bnot 5').toEvaluateTo(-6)
-      // ~5 = -6 (two\'s complement)
-    })
-
-    test('NOT of zero', () => {
-      expect('bnot 0').toEvaluateTo(-1)
-    })
-
-    test('NOT of negative number', () => {
-      expect('bnot -1').toEvaluateTo(0)
-    })
-
-    test('double NOT returns original', () => {
-      expect('bnot (bnot 5)').toEvaluateTo(5)
-    })
-  })
-
-  describe('<< (left shift)', () => {
-    test('basic left shift', () => {
-      expect('5 << 2').toEvaluateTo(20)
-      // 5 << 2 = 20
-    })
-
-    test('shift by zero', () => {
-      expect('5 << 0').toEvaluateTo(5)
-    })
-
-    test('shift by one', () => {
-      expect('3 << 1').toEvaluateTo(6)
-    })
-
-    test('large shift', () => {
-      expect('1 << 10').toEvaluateTo(1024)
-    })
-  })
-
-  describe('>> (signed right shift)', () => {
-    test('basic right shift', () => {
-      expect('20 >> 2').toEvaluateTo(5)
-      // 20 >> 2 = 5
-    })
-
-    test('shift by zero', () => {
-      expect('20 >> 0').toEvaluateTo(20)
-    })
-
-    test('preserves sign for negative numbers', () => {
-      expect('-20 >> 2').toEvaluateTo(-5)
-      // Sign is preserved
-    })
-
-    test('negative number right shift', () => {
-      expect('-8 >> 1').toEvaluateTo(-4)
-    })
-  })
-
-  describe('>>> (unsigned right shift)', () => {
-    test('basic unsigned right shift', () => {
-      expect('20 >>> 2').toEvaluateTo(5)
-    })
-
-    test('unsigned shift of -1', () => {
-      expect('-1 >>> 1').toEvaluateTo(2147483647)
-      // -1 >>> 1 = 2147483647 (unsigned, no sign extension)
-    })
-
-    test('unsigned shift of negative number', () => {
-      expect('-8 >>> 1').toEvaluateTo(2147483644)
-    })
-  })
-
-  describe('compound expressions', () => {
-    test('multiple bitwise operations', () => {
-      expect('(5 band 3) bor (8 bxor 12)').toEvaluateTo(5)
-      // (5 & 3) | (8 ^ 12) = 1 | 4 = 5
-    })
-
-    test('bitwise with variables', () => {
-      expect(`
-        a = 5
-        b = 3
-        a bor b
-      `).toEvaluateTo(7)
-    })
-
-    test('shift operations with variables', () => {
-      expect(`
-        x = 16
-        y = 2
-        x >> y
-      `).toEvaluateTo(4)
-    })
-
-    test('mixing shifts and bitwise', () => {
-      expect('(8 << 1) band 15').toEvaluateTo(0)
-      // (8 << 1) & 15 = 16 & 15 = 0
-    })
-
-    test('mixing shifts and bitwise 2', () => {
-      expect('(7 << 1) band 15').toEvaluateTo(14)
-      // (7 << 1) & 15 = 14 & 15 = 14
-    })
-  })
-
-  describe('precedence', () => {
-    test('bitwise has correct precedence with arithmetic', () => {
-      expect('1 + 2 band 3').toEvaluateTo(3)
-      // (1 + 2) & 3 = 3 & 3 = 3
-    })
-
-    test('shift has correct precedence', () => {
-      expect('4 + 8 << 1').toEvaluateTo(24)
-      // (4 + 8) << 1 = 12 << 1 = 24
-    })
-  })
-})

src/compiler/tests/compiler.test.ts

@@ -110,14 +110,7 @@ describe('compiler', () => {
   })
 
   test('function call with no args', () => {
-    expect(`bloop = do: 'bleep' end; bloop`).toEvaluateTo('bleep')
+    expect(`bloop = do: 'bloop' end; bloop`).toEvaluateTo('bloop')
-    expect(`bloop = [ go=do: 'bleep' end ]; bloop.go`).toEvaluateTo('bleep')
-    expect(`bloop = [ go=do: 'bleep' end ]; abc = do x: x end; abc (bloop.go)`).toEvaluateTo(
-      'bleep',
-    )
-    expect(`num = ((math.random) * 10 + 1) | math.floor; num >= 1 and num <= 10 `).toEvaluateTo(
-      true,
-    )
   })
 
   test('function call with if statement and multiple expressions', () => {
@@ -192,16 +185,6 @@ describe('compiler', () => {
   test('single line if', () => {
     expect(`if 3 < 9: shire end`).toEvaluateTo('shire')
   })
-
-  test('if statement with function definition (bytecode labels)', () => {
-    expect(`
-      if false:
-        abc = do x: x end
-      else:
-        nope
-      end
-      `).toEvaluateTo('nope')
-  })
 })
 
 describe('errors', () => {
@@ -298,43 +281,6 @@ describe('dot get', () => {
   test('use parens expr with dot-get', () => {
     expect(`a = 1; arr = array 'a' 'b' 'c'; arr.(1 + a)`).toEvaluateTo('c', { array })
   })
-
-  test('chained dot get: two levels', () => {
-    expect(`obj = [inner=[value=42]]; obj.inner.value`).toEvaluateTo(42)
-  })
-
-  test('chained dot get: three levels', () => {
-    expect(`obj = [a=[b=[c=123]]]; obj.a.b.c`).toEvaluateTo(123)
-  })
-
-  test('chained dot get: four levels', () => {
-    expect(`obj = [w=[x=[y=[z='deep']]]]; obj.w.x.y.z`).toEvaluateTo('deep')
-  })
-
-  test('chained dot get with numeric index', () => {
-    expect(`obj = [items=[1 2 3]]; obj.items.0`).toEvaluateTo(1)
-  })
-
-  test('chained dot get in expression', () => {
-    expect(`config = [server=[port=3000]]; config.server.port + 1`).toEvaluateTo(3001)
-  })
-
-  test('chained dot get as function argument', () => {
-    const double = (x: number) => x * 2
-    expect(`obj = [val=[num=21]]; double obj.val.num`).toEvaluateTo(42, { double })
-  })
-
-  test('chained dot get in binary operation', () => {
-    expect(`a = [x=[y=10]]; b = [x=[y=20]]; a.x.y + b.x.y`).toEvaluateTo(30)
-  })
-
-  test('chained dot get with parens at end', () => {
-    expect(`idx = 1; obj = [items=[10 20 30]]; obj.items.(idx)`).toEvaluateTo(20)
-  })
-
-  test('mixed chained and simple dot get', () => {
-    expect(`obj = [a=1 b=[c=2]]; obj.a + obj.b.c`).toEvaluateTo(3)
-  })
 })
 
 describe('default params', () => {
@@ -352,23 +298,6 @@ describe('default params', () => {
     expect('multiply = do x y=5: x * y end; multiply 5 2').toEvaluateTo(10)
   })
 
-  test('null triggers default value', () => {
-    expect('test = do n=true: n end; test').toEvaluateTo(true)
-    expect('test = do n=true: n end; test false').toEvaluateTo(false)
-    expect('test = do n=true: n end; test null').toEvaluateTo(true)
-  })
-
-  test('null triggers default for named parameters', () => {
-    expect("greet = do name='World': name end; greet name=null").toEvaluateTo('World')
-    expect("greet = do name='World': name end; greet name='Bob'").toEvaluateTo('Bob')
-  })
-
-  test('null triggers default with multiple parameters', () => {
-    expect('calc = do x=10 y=20: x + y end; calc null 5').toEvaluateTo(15)
-    expect('calc = do x=10 y=20: x + y end; calc 3 null').toEvaluateTo(23)
-    expect('calc = do x=10 y=20: x + y end; calc null null').toEvaluateTo(30)
-  })
-
   test.skip('array default', () => {
     expect('abc = do alpha=[a b c]: alpha end; abc').toEvaluateTo(['a', 'b', 'c'])
     expect('abc = do alpha=[a b c]: alpha end; abc [x y z]').toEvaluateTo(['x', 'y', 'z'])
@@ -380,154 +309,7 @@ describe('default params', () => {
       age: 60,
     })
     expect(
-      'make-person = do person=[name=Bob age=60]: person end; make-person [name=Jon age=21]',
+      'make-person = do person=[name=Bob age=60]: person end; make-person [name=Jon age=21]'
     ).toEvaluateTo({ name: 'Jon', age: 21 })
   })
 })
-
-describe('Nullish coalescing operator (??)', () => {
-  test('returns left side when not null', () => {
-    expect('5 ?? 10').toEvaluateTo(5)
-  })
-
-  test('returns right side when left is null', () => {
-    expect('null ?? 10').toEvaluateTo(10)
-  })
-
-  test('returns left side when left is false', () => {
-    expect('false ?? 10').toEvaluateTo(false)
-  })
-
-  test('returns left side when left is 0', () => {
-    expect('0 ?? 10').toEvaluateTo(0)
-  })
-
-  test('returns left side when left is empty string', () => {
-    expect(`'' ?? 'default'`).toEvaluateTo('')
-  })
-
-  test('chains left to right', () => {
-    expect('null ?? null ?? 42').toEvaluateTo(42)
-    expect('null ?? 10 ?? 20').toEvaluateTo(10)
-  })
-
-  test('short-circuits evaluation', () => {
-    const throwError = () => {
-      throw new Error('Should not evaluate')
-    }
-    expect('5 ?? throw-error').toEvaluateTo(5, { 'throw-error': throwError })
-  })
-
-  test('works with variables', () => {
-    expect('x = null; x ?? 5').toEvaluateTo(5)
-    expect('y = 3; y ?? 5').toEvaluateTo(3)
-  })
-
-  test('works with function calls', () => {
-    const getValue = () => null
-    const getDefault = () => 42
-    // Note: identifiers without parentheses refer to the function, not call it
-    // Use explicit call syntax to invoke the function
-    expect('(get-value) ?? (get-default)').toEvaluateTo(42, {
-      'get-value': getValue,
-      'get-default': getDefault,
-    })
-  })
-})
-
-describe('Nullish coalescing assignment (??=)', () => {
-  test('assigns when variable is null', () => {
-    expect('x = null; x ??= 5; x').toEvaluateTo(5)
-  })
-
-  test('does not assign when variable is not null', () => {
-    expect('x = 3; x ??= 10; x').toEvaluateTo(3)
-  })
-
-  test('does not assign when variable is false', () => {
-    expect('x = false; x ??= true; x').toEvaluateTo(false)
-  })
-
-  test('does not assign when variable is 0', () => {
-    expect('x = 0; x ??= 100; x').toEvaluateTo(0)
-  })
-
-  test('does not assign when variable is empty string', () => {
-    expect(`x = ''; x ??= 'default'; x`).toEvaluateTo('')
-  })
-
-  test('returns the final value', () => {
-    expect('x = null; x ??= 5').toEvaluateTo(5)
-    expect('y = 3; y ??= 10').toEvaluateTo(3)
-  })
-
-  test('short-circuits evaluation when not null', () => {
-    const throwError = () => {
-      throw new Error('Should not evaluate')
-    }
-    expect('x = 5; x ??= throw-error; x').toEvaluateTo(5, { 'throw-error': throwError })
-  })
-
-  test('works with expressions', () => {
-    expect('x = null; x ??= 2 + 3; x').toEvaluateTo(5)
-  })
-
-  test('works with function calls', () => {
-    const getDefault = () => 42
-    expect('x = null; x ??= (get-default); x').toEvaluateTo(42, { 'get-default': getDefault })
-  })
-
-  test('throws when variable is undefined', () => {
-    expect(() => expect('undefined-var ??= 5').toEvaluateTo(null)).toThrow()
-  })
-})
-
-describe('Compound assignment operators', () => {
-  test('+=', () => {
-    expect('x = 5; x += 3; x').toEvaluateTo(8)
-  })
-
-  test('-=', () => {
-    expect('x = 10; x -= 4; x').toEvaluateTo(6)
-  })
-
-  test('*=', () => {
-    expect('x = 3; x *= 4; x').toEvaluateTo(12)
-  })
-
-  test('/=', () => {
-    expect('x = 20; x /= 5; x').toEvaluateTo(4)
-  })
-
-  test('%=', () => {
-    expect('x = 10; x %= 3; x').toEvaluateTo(1)
-  })
-})
-
-describe('import', () => {
-  test('imports single dict', () => {
-    expect(`import str; starts-with? abc a`).toEvaluateTo(true)
-  })
-
-  test('imports multiple dicts', () => {
-    expect(`import str math list; map [1 2 3] do x: x * 2 end`).toEvaluateTo([2, 4, 6])
-  })
-
-  test('imports non-prelude dicts', () => {
-    expect(`
-      abc = [a=true b=yes c=si]
-      import abc
-      abc.b
-    `).toEvaluateTo('yes')
-  })
-
-  test('can specify imports', () => {
-    expect(`import str only=ends-with?; ref ends-with? | function?`).toEvaluateTo(true)
-    expect(`import str only=ends-with?; ref starts-with? | function?`).toEvaluateTo(false)
-    expect(`
-      abc = [a=true b=yes c=si]
-      import abc only=[a c]
-      [a c]
-      `).toEvaluateTo([true, 'si'])
-  })
-})

src/compiler/tests/function-blocks.test.ts

@@ -10,16 +10,12 @@ describe('single line function blocks', () => {
   })
 
   test('work with named args', () => {
-    expect(
+    expect(`attach = do signal fn: [ signal (fn) ] end; attach signal='exit': true end`).toEvaluateTo(['exit', true])
-      `attach = do signal fn: [ signal (fn) ] end; attach signal='exit': true end`,
-    ).toEvaluateTo(['exit', true])
   })
 
+
   test('work with dot-get', () => {
-    expect(`signals = [trap=do x y: [x (y)] end]; signals.trap 'EXIT': true end`).toEvaluateTo([
+    expect(`signals = [trap=do x y: [x (y)] end]; signals.trap 'EXIT': true end`).toEvaluateTo(['EXIT', true])
-      'EXIT',
-      true,
-    ])
   })
 })
 
@@ -27,15 +23,15 @@ describe('multi line function blocks', () => {
   test('work with no args', () => {
     expect(`
 trap = do x: x end
-trap:
+trap: 
-  true
+  true 
 end`).toEvaluateTo(true)
   })
 
   test('work with one arg', () => {
     expect(`
 trap = do x y: [ x (y) ] end
-trap EXIT:
+trap EXIT: 
   true
 end`).toEvaluateTo(['EXIT', true])
   })
@@ -43,16 +39,17 @@ end`).toEvaluateTo(['EXIT', true])
   test('work with named args', () => {
     expect(`
 attach = do signal fn: [ signal (fn) ] end
-attach signal='exit':
+attach signal='exit': 
   true
 end`).toEvaluateTo(['exit', true])
   })
 
+
   test('work with dot-get', () => {
     expect(`
 signals = [trap=do x y: [x (y)] end]
-signals.trap 'EXIT':
+signals.trap 'EXIT': 
-  true
+  true 
 end`).toEvaluateTo(['EXIT', true])
   })
 })

src/compiler/tests/literals.test.ts

@@ -1,55 +1,6 @@
 import { describe } from 'bun:test'
 import { expect, test } from 'bun:test'
 
-describe('number literals', () => {
-  test('binary literals', () => {
-    expect('0b110').toEvaluateTo(6)
-    expect('0b1010').toEvaluateTo(10)
-    expect('0b11111111').toEvaluateTo(255)
-    expect('0b0').toEvaluateTo(0)
-    expect('0b1').toEvaluateTo(1)
-  })
-
-  test('hex literals', () => {
-    expect('0xdeadbeef').toEvaluateTo(0xdeadbeef)
-    expect('0xdeadbeef').toEvaluateTo(3735928559)
-    expect('0xFF').toEvaluateTo(255)
-    expect('0xff').toEvaluateTo(255)
-    expect('0x10').toEvaluateTo(16)
-    expect('0x0').toEvaluateTo(0)
-    expect('0xABCDEF').toEvaluateTo(0xabcdef)
-  })
-
-  test('octal literals', () => {
-    expect('0o644').toEvaluateTo(420)
-    expect('0o755').toEvaluateTo(493)
-    expect('0o777').toEvaluateTo(511)
-    expect('0o10').toEvaluateTo(8)
-    expect('0o0').toEvaluateTo(0)
-    expect('0o123').toEvaluateTo(83)
-  })
-
-  test('decimal literals still work', () => {
-    expect('42').toEvaluateTo(42)
-    expect('3.14').toEvaluateTo(3.14)
-    expect('0').toEvaluateTo(0)
-    expect('999999').toEvaluateTo(999999)
-  })
-
-  test('negative hex, binary, and octal', () => {
-    expect('-0xFF').toEvaluateTo(-255)
-    expect('-0b1010').toEvaluateTo(-10)
-    expect('-0o755').toEvaluateTo(-493)
-  })
-
-  test('positive prefix', () => {
-    expect('+0xFF').toEvaluateTo(255)
-    expect('+0b110').toEvaluateTo(6)
-    expect('+0o644').toEvaluateTo(420)
-    expect('+42').toEvaluateTo(42)
-  })
-})
-
 describe('array literals', () => {
   test('work with numbers', () => {
     expect('[1 2 3]').toEvaluateTo([1, 2, 3])
@@ -151,22 +102,18 @@ describe('array literals', () => {
 describe('dict literals', () => {
   test('work with numbers', () => {
     expect('[a=1 b=2 c=3]').toEvaluateTo({ a: 1, b: 2, c: 3 })
-    expect('[a = 1 b = 2 c = 3]').toEvaluateTo({ a: 1, b: 2, c: 3 })
   })
 
   test('work with strings', () => {
     expect("[a='one' b='two' c='three']").toEvaluateTo({ a: 'one', b: 'two', c: 'three' })
-    expect("[a = 'one' b = 'two' c = 'three']").toEvaluateTo({ a: 'one', b: 'two', c: 'three' })
   })
 
   test('work with identifiers', () => {
     expect('[a=one b=two c=three]').toEvaluateTo({ a: 'one', b: 'two', c: 'three' })
-    expect('[a = one b = two c = three]').toEvaluateTo({ a: 'one', b: 'two', c: 'three' })
   })
 
   test('can be nested', () => {
     expect('[a=one b=[two [c=three]]]').toEvaluateTo({ a: 'one', b: ['two', { c: 'three' }] })
-    expect('[a = one b = [two [c = three]]]').toEvaluateTo({ a: 'one', b: ['two', { c: 'three' }] })
   })
 
   test('can span multiple lines', () => {
@@ -175,12 +122,6 @@ describe('dict literals', () => {
         b=2
         c=3
       ]`).toEvaluateTo({ a: 1, b: 2, c: 3 })
-
-    expect(`[
-        a = 1
-        b = 2
-        c = 3
-      ]`).toEvaluateTo({ a: 1, b: 2, c: 3 })
   })
 
   test('empty dict', () => {
@@ -200,12 +141,10 @@ describe('dict literals', () => {
 
   test('semicolons as separators', () => {
     expect('[a=1; b=2; c=3]').toEvaluateTo({ a: 1, b: 2, c: 3 })
-    expect('[a = 1; b = 2; c = 3]').toEvaluateTo({ a: 1, b: 2, c: 3 })
   })
 
   test('expressions in dicts', () => {
     expect('[a=(1 + 2) b=(3 * 4)]').toEvaluateTo({ a: 3, b: 12 })
-    expect('[a = (1 + 2) b = (3 * 4)]').toEvaluateTo({ a: 3, b: 12 })
   })
 
   test('empty lines within dicts', () => {
@@ -216,69 +155,3 @@ describe('dict literals', () => {
   c=3]`).toEvaluateTo({ a: 1, b: 2, c: 3 })
   })
 })
-
-describe('curly strings', () => {
-  test('work on one line', () => {
-    expect('{ one two three }').toEvaluateTo(' one two three ')
-  })
-
-  test('work on multiple lines', () => {
-    expect(`{
-      one
-      two
-      three
-    }`).toEvaluateTo('\n      one\n      two\n      three\n    ')
-  })
-
-  test('can contain other curlies', () => {
-    expect(`{
-      { one }
-      two
-      { three }
-    }`).toEvaluateTo('\n      { one }\n      two\n      { three }\n    ')
-  })
-
-  test('interpolates variables', () => {
-    expect(`name = Bob; { Hello $name! }`).toEvaluateTo(` Hello Bob! `)
-  })
-
-  test("doesn't interpolate escaped variables ", () => {
-    expect(`name = Bob; { Hello \\$name }`).toEvaluateTo(` Hello $name `)
-    expect(`a = 1; b = 2; { sum is \\$(a + b)! }`).toEvaluateTo(` sum is $(a + b)! `)
-  })
-
-  test('interpolates expressions', () => {
-    expect(`a = 1; b = 2; { sum is $(a + b)! }`).toEvaluateTo(` sum is 3! `)
-    expect(`a = 1; b = 2; { sum is { $(a + b) }! }`).toEvaluateTo(` sum is { 3 }! `)
-    expect(`a = 1; b = 2; { sum is $(a + (b * b))! }`).toEvaluateTo(` sum is 5! `)
-    expect(`{ This is $({twisted}). }`).toEvaluateTo(` This is twisted. `)
-    expect(`{ This is $({{twisted}}). }`).toEvaluateTo(` This is {twisted}. `)
-  })
-
-  test('interpolation edge cases', () => {
-    expect(`{[a=1 b=2 c={wild}]}`).toEvaluateTo(`[a=1 b=2 c={wild}]`)
-    expect(`a = 1;b = 2;c = 3;{$a $b $c}`).toEvaluateTo(`1 2 3`)
-    expect(`a = 1;b = 2;c = 3;{$(a)$(b)$(c)}`).toEvaluateTo(`123`)
-  })
-})
-
-describe('double quoted strings', () => {
-  test('work', () => {
-    expect(`"hello world"`).toEvaluateTo('hello world')
-  })
-
-  test("don't interpolate", () => {
-    expect(`"hello $world"`).toEvaluateTo('hello $world')
-    expect(`"hello $(1 + 2)"`).toEvaluateTo('hello $(1 + 2)')
-  })
-
-  test('equal regular strings', () => {
-    expect(`"hello world" == 'hello world'`).toEvaluateTo(true)
-  })
-
-  test('can contain newlines', () => {
-    expect(`
-      "hello
-      world"`).toEvaluateTo('hello\n      world')
-  })
-})

src/compiler/tests/native-exceptions.test.ts

@@ -40,7 +40,7 @@ describe('Native Function Exceptions', () => {
     const vm = new VM(compiler.bytecode)
 
     vm.set('async-fail', async () => {
-      await new Promise((resolve) => setTimeout(resolve, 1))
+      await new Promise(resolve => setTimeout(resolve, 1))
       throw new Error('async error')
     })
 
@@ -237,7 +237,7 @@ describe('Native Function Exceptions', () => {
     const result = await vm.run()
     expect(result).toEqual({
       type: 'string',
-      value: 'This is a very specific error message with details',
+      value: 'This is a very specific error message with details'
     })
   })
 

src/compiler/tests/pipe.test.ts

@@ -93,6 +93,7 @@ describe('pipe expressions', () => {
     `).toEvaluateTo(5)
   })
 
+
   test('string literals can be piped', () => {
     expect(`'hey there' | str.to-upper`).toEvaluateTo('HEY THERE')
   })
@@ -117,42 +118,4 @@ describe('pipe expressions', () => {
   test('dict literals can be piped', () => {
     expect(`[a=1 b=2 c=3] | dict.values | list.sort | str.join '-'`).toEvaluateTo('1-2-3')
   })
-
-  test('pipe to array literal using _ in nested expressions', () => {
-    // _ should be accessible inside nested function calls within array literals
-    const code = `
-      double = do x: x * 2 end
-      triple = do x: x * 3 end
-      5 | [(double _) (triple _)]`
-    expect(code).toEvaluateTo([10, 15])
-  })
-
-  test('pipe to array literal using _ multiple times', () => {
-    expect(`10 | [_ _ _]`).toEvaluateTo([10, 10, 10])
-  })
-
-  test('pipe to parenthesized expression using _', () => {
-    const code = `
-      double = do x: x * 2 end
-      5 | (double _)`
-    expect(code).toEvaluateTo(10)
-  })
-
-  test('pipe chain with array literal receiver', () => {
-    // Pipe to array, then pipe that array to a function
-    const code = `
-      double = do x: x * 2 end
-      5 | [(double _) _] | list.sum`
-    expect(code).toEvaluateTo(15) // [10, 5] -> 15
-  })
-
-  test('_ in deeply nested expressions within pipe', () => {
-    // _ should work in nested function calls within function arguments
-    const code = `
-      add = do a b: a + b end
-      mul = do a b: a * b end
-      10 | add (mul _ 2) _`
-    // add(mul(10, 2), 10) = add(20, 10) = 30
-    expect(code).toEvaluateTo(30)
-  })
 })

src/compiler/tests/ribbit.test.ts

@@ -5,7 +5,7 @@ const buffer: string[] = []
 const ribbitGlobals = {
   ribbit: async (cb: Function) => {
     await cb()
-    return buffer.join('\n')
+    return buffer.join("\n")
   },
   tag: async (tagFn: Function, atDefaults = {}) => {
     return (atNamed = {}, ...args: any[]) => tagFn(Object.assign({}, atDefaults, atNamed), ...args)
@@ -20,12 +20,10 @@ const ribbitGlobals = {
   ul: (atNamed: {}, ...args: any[]) => tag('ul', atNamed, ...args),
   li: (atNamed: {}, ...args: any[]) => tag('li', atNamed, ...args),
   nospace: () => NOSPACE_TOKEN,
-  echo: (...args: any[]) => console.log(...args),
+  echo: (...args: any[]) => console.log(...args)
 }
 
-function raw(fn: Function) {
+function raw(fn: Function) { (fn as any).raw = true }
-  ;(fn as any).raw = true
-}
 
 const tagBlock = async (tagName: string, props = {}, fn: Function) => {
   const attrs = Object.entries(props).map(([key, value]) => `${key}="${value}"`)
@@ -41,13 +39,14 @@ const tagCall = (tagName: string, atNamed = {}, ...args: any[]) => {
   const space = attrs.length ? ' ' : ''
   const children = args
     .reverse()
-    .map((a) => (a === TAG_TOKEN ? buffer.pop() : a))
+    .map(a => a === TAG_TOKEN ? buffer.pop() : a)
-    .reverse()
+    .reverse().join(' ')
-    .join(' ')
     .replaceAll(` ${NOSPACE_TOKEN} `, '')
 
-  if (SELF_CLOSING.includes(tagName)) buffer.push(`<${tagName}${space}${attrs.join(' ')} />`)
+  if (SELF_CLOSING.includes(tagName))
-  else buffer.push(`<${tagName}${space}${attrs.join(' ')}>${children}</${tagName}>`)
+    buffer.push(`<${tagName}${space}${attrs.join(' ')} />`)
+  else
+    buffer.push(`<${tagName}${space}${attrs.join(' ')}>${children}</${tagName}>`)
 }
 
 const tag = async (tagName: string, atNamed = {}, ...args: any[]) => {
@@ -61,25 +60,10 @@ const tag = async (tagName: string, atNamed = {}, ...args: any[]) => {
 
 const NOSPACE_TOKEN = '!!ribbit-nospace!!'
 const TAG_TOKEN = '!!ribbit-tag!!'
-const SELF_CLOSING = [
+const SELF_CLOSING = ["area", "base", "br", "col", "embed", "hr", "img", "input", "link", "meta", "param", "source", "track", "wbr"]
-  'area',
-  'base',
-  'br',
-  'col',
-  'embed',
-  'hr',
-  'img',
-  'input',
-  'link',
-  'meta',
-  'param',
-  'source',
-  'track',
-  'wbr',
-]
 
 describe('ribbit', () => {
-  beforeEach(() => (buffer.length = 0))
+  beforeEach(() => buffer.length = 0)
 
   test('head tag', () => {
     expect(`
@@ -90,14 +74,11 @@ ribbit:
     meta name=viewport content='width=device-width, initial-scale=1, viewport-fit=cover'
   end
 end
-  `).toEvaluateTo(
+  `).toEvaluateTo(`<head>
-      `<head>
 <title>What up</title>
 <meta charset="UTF-8" />
 <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
-</head>`,
+</head>`, ribbitGlobals)
-      ribbitGlobals,
-    )
   })
 
   test('custom tags', () => {
@@ -109,14 +90,11 @@ ribbit:
     li two
     li three
   end
-end`).toEvaluateTo(
+end`).toEvaluateTo(`<ul class="list">
-      `<ul class="list">
 <li border-bottom="1px solid black">one</li>
 <li>two</li>
 <li>three</li>
-</ul>`,
+</ul>`, ribbitGlobals)
-      ribbitGlobals,
-    )
   })
 
   test('inline expressions', () => {
@@ -132,8 +110,6 @@ end`).toEvaluateTo(
 <h1 class="bright" style="font-family: helvetica">Heya</h1>
 <h2>man that is <b>wild</b>!</h2>
 <p>Double the fun.</p>
-</p>`,
+</p>`, ribbitGlobals)
-      ribbitGlobals,
-    )
   })
-})
+})

src/compiler/tests/while.test.ts

@@ -10,7 +10,8 @@ describe('while', () => {
         a = false
         b = done
       end
-      b`).toEvaluateTo('done')
+      b`)
+      .toEvaluateTo('done')
   })
 
   test('basic expression', () => {
@@ -19,7 +20,8 @@ describe('while', () => {
       while a < 10: 
         a += 1
       end
-      a`).toEvaluateTo(10)
+      a`)
+      .toEvaluateTo(10)
   })
 
   test('compound expression', () => {
@@ -29,7 +31,8 @@ describe('while', () => {
       while a > 0 and b < 100:  
         b += 1
       end
-      b`).toEvaluateTo(100)
+      b`)
+      .toEvaluateTo(100)
   })
 
   test('returns value', () => {
@@ -39,6 +42,7 @@ describe('while', () => {
         a += 1
         done
       end
-      ret`).toEvaluateTo('done')
+      ret`)
+      .toEvaluateTo('done')
   })
-})
+})

src/compiler/utils.ts

@@ -1,9 +1,9 @@
 import { CompilerError } from '#compiler/compilerError.ts'
-import type { SyntaxNode, Tree } from '#parser/node'
+import * as terms from '#parser/shrimp.terms'
+import type { SyntaxNode, Tree } from '@lezer/common'
 
 export const checkTreeForErrors = (tree: Tree): CompilerError[] => {
   const errors: CompilerError[] = []
-
   tree.iterate({
     enter: (node) => {
       if (node.type.isError) {
@@ -23,7 +23,7 @@ export const getAllChildren = (node: SyntaxNode): SyntaxNode[] => {
     child = child.nextSibling
   }
 
-  return children.filter((n) => !n.type.is('Comment'))
+  return children.filter((n) => n.type.id !== terms.Comment)
 }
 
 export const getBinaryParts = (node: SyntaxNode) => {
@@ -45,23 +45,23 @@ export const getAssignmentParts = (node: SyntaxNode) => {
     throw new CompilerError(
       `Assign expected 3 children, got ${children.length}`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
   // array destructuring
-  if (left && left.type.is('Array')) {
+  if (left && left.type.id === terms.Array) {
-    const identifiers = getAllChildren(left).filter((child) => child.type.is('Identifier'))
+    const identifiers = getAllChildren(left).filter((child) => child.type.id === terms.Identifier)
     return { arrayPattern: identifiers, right }
   }
 
-  if (!left || !left.type.is('AssignableIdentifier')) {
+  if (!left || left.type.id !== terms.AssignableIdentifier) {
     throw new CompilerError(
       `Assign left child must be an AssignableIdentifier or Array, got ${
         left ? left.type.name : 'none'
       }`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
@@ -72,19 +72,19 @@ export const getCompoundAssignmentParts = (node: SyntaxNode) => {
   const children = getAllChildren(node)
   const [left, operator, right] = children
 
-  if (!left || !left.type.is('AssignableIdentifier')) {
+  if (!left || left.type.id !== terms.AssignableIdentifier) {
     throw new CompilerError(
       `CompoundAssign left child must be an AssignableIdentifier, got ${
         left ? left.type.name : 'none'
       }`,
       node.from,
-      node.to,
+      node.to
     )
   } else if (!operator || !right) {
     throw new CompilerError(
       `CompoundAssign expected 3 children, got ${children.length}`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
@@ -99,16 +99,16 @@ export const getFunctionDefParts = (node: SyntaxNode, input: string) => {
     throw new CompilerError(
       `FunctionDef expected at least 4 children, got ${children.length}`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
   const paramNames = getAllChildren(paramsNode).map((param) => {
-    if (!param.type.is('Identifier') && !param.type.is('NamedParam')) {
+    if (param.type.id !== terms.Identifier && param.type.id !== terms.NamedParam) {
       throw new CompilerError(
         `FunctionDef params must be Identifier or NamedParam, got ${param.type.name}`,
         param.from,
-        param.to,
+        param.to
       )
     }
     return input.slice(param.from, param.to)
@@ -123,7 +123,7 @@ export const getFunctionDefParts = (node: SyntaxNode, input: string) => {
   let finallyBody: SyntaxNode | undefined
 
   for (const child of rest) {
-    if (child.type.is('CatchExpr')) {
+    if (child.type.id === terms.CatchExpr) {
       catchExpr = child
       const catchChildren = getAllChildren(child)
       const [_catchKeyword, identifierNode, _colon, body] = catchChildren
@@ -131,12 +131,12 @@ export const getFunctionDefParts = (node: SyntaxNode, input: string) => {
         throw new CompilerError(
           `CatchExpr expected identifier and body, got ${catchChildren.length} children`,
           child.from,
-          child.to,
+          child.to
         )
       }
       catchVariable = input.slice(identifierNode.from, identifierNode.to)
       catchBody = body
-    } else if (child.type.is('FinallyExpr')) {
+    } else if (child.type.id === terms.FinallyExpr) {
       finallyExpr = child
       const finallyChildren = getAllChildren(child)
       const [_finallyKeyword, _colon, body] = finallyChildren
@@ -144,7 +144,7 @@ export const getFunctionDefParts = (node: SyntaxNode, input: string) => {
         throw new CompilerError(
           `FinallyExpr expected body, got ${finallyChildren.length} children`,
           child.from,
-          child.to,
+          child.to
         )
       }
       finallyBody = body
@@ -165,9 +165,9 @@ export const getFunctionCallParts = (node: SyntaxNode, input: string) => {
     throw new CompilerError(`FunctionCall expected at least 1 child, got 0`, node.from, node.to)
   }
 
-  const namedArgs = args.filter((arg) => arg.type.is('NamedArg'))
+  const namedArgs = args.filter((arg) => arg.type.id === terms.NamedArg)
   const positionalArgs = args
-    .filter((arg) => arg.type.is('PositionalArg'))
+    .filter((arg) => arg.type.id === terms.PositionalArg)
     .map((arg) => {
       const child = arg.firstChild
       if (!child) throw new CompilerError(`PositionalArg has no child`, arg.from, arg.to)
@@ -199,7 +199,7 @@ export const getIfExprParts = (node: SyntaxNode, input: string) => {
     throw new CompilerError(
       `IfExpr expected at least 4 children, got ${children.length}`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
@@ -208,13 +208,13 @@ export const getIfExprParts = (node: SyntaxNode, input: string) => {
   rest.forEach((child) => {
     const parts = getAllChildren(child)
 
-    if (child.type.is('ElseExpr')) {
+    if (child.type.id === terms.ElseExpr) {
       if (parts.length !== 3) {
         const message = `ElseExpr expected 1 child, got ${parts.length}`
         throw new CompilerError(message, child.from, child.to)
       }
       elseThenBlock = parts.at(-1)
-    } else if (child.type.is('ElseIfExpr')) {
+    } else if (child.type.id === terms.ElseIfExpr) {
       const [_else, _if, conditional, _colon, thenBlock] = parts
       if (!conditional || !thenBlock) {
         const names = parts.map((p) => p.type.name).join(', ')
@@ -249,32 +249,32 @@ export const getStringParts = (node: SyntaxNode, input: string) => {
   // The text is just between the quotes
   const parts = children.filter((child) => {
     return (
-      child.type.is('StringFragment') ||
+      child.type.id === terms.StringFragment ||
-      child.type.is('Interpolation') ||
+      child.type.id === terms.Interpolation ||
-      child.type.is('EscapeSeq') ||
+      child.type.id === terms.EscapeSeq
-      child.type.is('CurlyString')
     )
   })
 
   // Validate each part is the expected type
   parts.forEach((part) => {
     if (
-      part.type.is('StringFragment') &&
+      part.type.id !== terms.StringFragment &&
-      part.type.is('Interpolation') &&
+      part.type.id !== terms.Interpolation &&
-      part.type.is('EscapeSeq') &&
+      part.type.id !== terms.EscapeSeq
-      part.type.is('CurlyString')
     ) {
       throw new CompilerError(
         `String child must be StringFragment, Interpolation, or EscapeSeq, got ${part.type.name}`,
         part.from,
-        part.to,
+        part.to
       )
     }
   })
 
   // hasInterpolation means the string has interpolation ($var) or escape sequences (\n)
   // A simple string like 'hello' has one StringFragment but no interpolation
-  const hasInterpolation = parts.some((p) => p.type.is('Interpolation') || p.type.is('EscapeSeq'))
+  const hasInterpolation = parts.some(
+    (p) => p.type.id === terms.Interpolation || p.type.id === terms.EscapeSeq
+  )
   return { parts, hasInterpolation }
 }
 
@@ -286,29 +286,29 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
     throw new CompilerError(
       `DotGet expected 2 identifier children, got ${children.length}`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
-  if (!object.type.is('IdentifierBeforeDot')) {
+  if (object.type.id !== terms.IdentifierBeforeDot) {
     throw new CompilerError(
       `DotGet object must be an IdentifierBeforeDot, got ${object.type.name}`,
       object.from,
-      object.to,
+      object.to
     )
   }
 
-  if (!['Identifier', 'Number', 'ParenExpr', 'DotGet'].includes(property.type.name)) {
+  if (![terms.Identifier, terms.Number, terms.ParenExpr].includes(property.type.id)) {
     throw new CompilerError(
-      `DotGet property must be an Identifier, Number, ParenExpr, or DotGet, got ${property.type.name}`,
+      `DotGet property must be an Identifier or Number, got ${property.type.name}`,
       property.from,
-      property.to,
+      property.to
     )
   }
 
   const objectName = input.slice(object.from, object.to)
 
-  return { object, objectName, property }
+  return { objectName, property }
 }
 
 export const getTryExprParts = (node: SyntaxNode, input: string) => {
@@ -321,7 +321,7 @@ export const getTryExprParts = (node: SyntaxNode, input: string) => {
     throw new CompilerError(
       `TryExpr expected at least 3 children, got ${children.length}`,
       node.from,
-      node.to,
+      node.to
     )
   }
 
@@ -332,7 +332,7 @@ export const getTryExprParts = (node: SyntaxNode, input: string) => {
   let finallyBody: SyntaxNode | undefined
 
   rest.forEach((child) => {
-    if (child.type.is('CatchExpr')) {
+    if (child.type.id === terms.CatchExpr) {
       catchExpr = child
       const catchChildren = getAllChildren(child)
       const [_catchKeyword, identifierNode, _colon, body] = catchChildren
@@ -340,12 +340,12 @@ export const getTryExprParts = (node: SyntaxNode, input: string) => {
         throw new CompilerError(
           `CatchExpr expected identifier and body, got ${catchChildren.length} children`,
           child.from,
-          child.to,
+          child.to
         )
       }
       catchVariable = input.slice(identifierNode.from, identifierNode.to)
       catchBody = body
-    } else if (child.type.is('FinallyExpr')) {
+    } else if (child.type.id === terms.FinallyExpr) {
       finallyExpr = child
       const finallyChildren = getAllChildren(child)
       const [_finallyKeyword, _colon, body] = finallyChildren
@@ -353,7 +353,7 @@ export const getTryExprParts = (node: SyntaxNode, input: string) => {
         throw new CompilerError(
           `FinallyExpr expected body, got ${finallyChildren.length} children`,
           child.from,
-          child.to,
+          child.to
         )
       }
       finallyBody = body

src/editor/commands.ts

@@ -0,0 +1,261 @@
+export type CommandShape = {
+  command: string
+  description?: string
+  args: ArgShape[]
+  execute: string | ((...args: any[]) => any)
+}
+
+type ArgShape<T extends keyof ArgTypeMap = keyof ArgTypeMap> = {
+  name: string
+  type: T
+  description?: string
+  optional?: boolean
+  default?: ArgTypeMap[T]
+}
+
+type ArgTypeMap = {
+  string: string
+  number: number
+  boolean: boolean
+}
+
+const commandShapes: CommandShape[] = [
+  {
+    command: 'ls',
+    description: 'List the contents of a directory',
+    execute: './commands/ls.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'The path to list' },
+      { name: 'all', type: 'boolean', description: 'Show hidden files', default: false },
+      { name: 'long', type: 'boolean', description: 'List in long format', default: false },
+      {
+        name: 'short-names',
+        type: 'boolean',
+        description: 'Only print file names',
+        default: false,
+      },
+      { name: 'full-paths', type: 'boolean', description: 'Display full paths', default: false },
+    ],
+  },
+
+  {
+    command: 'cd',
+    description: 'Change the current working directory',
+    execute: './commands/cd.ts',
+    args: [{ name: 'path', type: 'string', description: 'The path to change to' }],
+  },
+
+  {
+    command: 'cp',
+    description: 'Copy files or directories',
+    execute: './commands/cp.ts',
+    args: [
+      { name: 'source', type: 'string', description: 'Source file or directory' },
+      { name: 'destination', type: 'string', description: 'Destination path' },
+      { name: 'recursive', type: 'boolean', description: 'Copy recursively', default: false },
+      { name: 'verbose', type: 'boolean', description: 'Verbose output', default: false },
+    ],
+  },
+
+  {
+    command: 'mv',
+    description: 'Move files or directories',
+    execute: './commands/mv.ts',
+    args: [
+      { name: 'source', type: 'string', description: 'Source file or directory' },
+      { name: 'destination', type: 'string', description: 'Destination path' },
+      { name: 'verbose', type: 'boolean', description: 'Verbose output', default: false },
+    ],
+  },
+
+  {
+    command: 'rm',
+    description: 'Remove files or directories',
+    execute: './commands/rm.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'Path to remove' },
+      { name: 'recursive', type: 'boolean', description: 'Remove recursively', default: false },
+      { name: 'force', type: 'boolean', description: 'Force removal', default: false },
+      { name: 'verbose', type: 'boolean', description: 'Verbose output', default: false },
+    ],
+  },
+
+  {
+    command: 'mkdir',
+    description: 'Create directories',
+    execute: './commands/mkdir.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'Directory path to create' },
+      { name: 'verbose', type: 'boolean', description: 'Verbose output', default: false },
+    ],
+  },
+
+  {
+    command: 'touch',
+    description: 'Create empty files or update timestamps',
+    execute: './commands/touch.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'File path to touch' },
+      { name: 'access', type: 'boolean', description: 'Update access time only', default: false },
+      {
+        name: 'modified',
+        type: 'boolean',
+        description: 'Update modified time only',
+        default: false,
+      },
+    ],
+  },
+
+  {
+    command: 'echo',
+    description: 'Display a string',
+    execute: './commands/echo.ts',
+    args: [
+      { name: 'text', type: 'string', description: 'Text to display' },
+      { name: 'no-newline', type: 'boolean', description: "Don't append newline", default: false },
+    ],
+  },
+
+  {
+    command: 'cat',
+    description: 'Display file contents',
+    execute: './commands/cat.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'File to display' },
+      { name: 'numbered', type: 'boolean', description: 'Show line numbers', default: false },
+    ],
+  },
+
+  {
+    command: 'head',
+    description: 'Show first lines of input',
+    execute: './commands/head.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'File to read from' },
+      { name: 'lines', type: 'number', description: 'Number of lines', default: 10 },
+    ],
+  },
+
+  {
+    command: 'tail',
+    description: 'Show last lines of input',
+    execute: './commands/tail.ts',
+    args: [
+      { name: 'path', type: 'string', description: 'File to read from' },
+      { name: 'lines', type: 'number', description: 'Number of lines', default: 10 },
+      { name: 'follow', type: 'boolean', description: 'Follow file changes', default: false },
+    ],
+  },
+
+  {
+    command: 'grep',
+    description: 'Search for patterns in text',
+    execute: './commands/grep.ts',
+    args: [
+      { name: 'pattern', type: 'string', description: 'Pattern to search for' },
+      {
+        name: 'ignore-case',
+        type: 'boolean',
+        description: 'Case insensitive search',
+        default: false,
+      },
+      { name: 'invert-match', type: 'boolean', description: 'Invert match', default: false },
+      { name: 'line-number', type: 'boolean', description: 'Show line numbers', default: false },
+    ],
+  },
+
+  {
+    command: 'sort',
+    description: 'Sort input',
+    execute: './commands/sort.ts',
+    args: [
+      { name: 'reverse', type: 'boolean', description: 'Sort in reverse order', default: false },
+      {
+        name: 'ignore-case',
+        type: 'boolean',
+        description: 'Case insensitive sort',
+        default: false,
+      },
+      { name: 'numeric', type: 'boolean', description: 'Numeric sort', default: false },
+    ],
+  },
+
+  {
+    command: 'uniq',
+    description: 'Filter out repeated lines',
+    execute: './commands/uniq.ts',
+    args: [
+      { name: 'count', type: 'boolean', description: 'Show count of occurrences', default: false },
+      {
+        name: 'repeated',
+        type: 'boolean',
+        description: 'Show only repeated lines',
+        default: false,
+      },
+      { name: 'unique', type: 'boolean', description: 'Show only unique lines', default: false },
+    ],
+  },
+
+  {
+    command: 'select',
+    description: 'Select specific columns from data',
+    execute: './commands/select.ts',
+    args: [{ name: 'columns', type: 'string', description: 'Columns to select' }],
+  },
+
+  {
+    command: 'where',
+    description: 'Filter data based on conditions',
+    execute: './commands/where.ts',
+    args: [{ name: 'condition', type: 'string', description: 'Filter condition' }],
+  },
+
+  {
+    command: 'group-by',
+    description: 'Group data by column values',
+    execute: './commands/group-by.ts',
+    args: [{ name: 'column', type: 'string', description: 'Column to group by' }],
+  },
+
+  {
+    command: 'ps',
+    description: 'List running processes',
+    execute: './commands/ps.ts',
+    args: [
+      { name: 'long', type: 'boolean', description: 'Show detailed information', default: false },
+    ],
+  },
+
+  {
+    command: 'sys',
+    description: 'Show system information',
+    execute: './commands/sys.ts',
+    args: [],
+  },
+
+  {
+    command: 'which',
+    description: 'Find the location of a command',
+    execute: './commands/which.ts',
+    args: [
+      { name: 'command', type: 'string', description: 'Command to locate' },
+      { name: 'all', type: 'boolean', description: 'Show all matches', default: false },
+    ],
+  },
+] as const
+
+let commandSource = () => commandShapes
+export const setCommandSource = (do: () => CommandShape[]) => {
+  commandSource = fn
+}
+
+export const resetCommandSource = () => {
+  commandSource = () => commandShapes
+}
+
+export const matchingCommands = (prefix: string) => {
+  const match = commandSource().find((cmd) => cmd.command === prefix)
+  const partialMatches = commandSource().filter((cmd) => cmd.command.startsWith(prefix))
+
+  return { match, partialMatches }
+}

src/editor/completions.ts

@@ -1,87 +0,0 @@
-import { autocompletion, type CompletionContext, type Completion } from '@codemirror/autocomplete'
-import { Shrimp } from '#/index'
-
-const keywords = [
-  'import',
-  'end',
-  'do',
-  'if',
-  'else',
-  'while',
-  'try',
-  'catch',
-  'finally',
-  'throw',
-  'not',
-  'and',
-  'or',
-  'true',
-  'false',
-  'null',
-]
-
-const keywordCompletions: Completion[] = keywords.map((k) => ({
-  label: k,
-  type: 'keyword',
-  boost: -1,
-}))
-
-export const createShrimpCompletions = (shrimp: Shrimp) => {
-  // Build completions from all names in the shrimp scope
-  const scopeNames = shrimp.vm.scope.vars()
-  console.log(`🌭`, shrimp.vm.vars())
-
-  const functionCompletions: Completion[] = scopeNames.map((name) => {
-    const value = shrimp.vm.scope.get(name)
-    let type
-    if (value?.type === 'function' || value?.type === 'native') {
-      type = 'function'
-    } else if (value?.type === 'dict') {
-      type = 'namespace'
-    } else {
-      type = 'variable'
-    }
-
-    return { type, label: name }
-  })
-
-  const allCompletions = [...keywordCompletions, ...functionCompletions]
-
-  // Get methods for a module (e.g., math, str, list)
-  const getModuleMethods = (moduleName: string): Completion[] => {
-    const module = shrimp.get(moduleName)
-    if (!module || typeof module !== 'object') return []
-
-    return Object.keys(module).map((m) => ({ label: m, type: 'function' }))
-  }
-
-  const shrimpCompletionSource = (context: CompletionContext) => {
-    // Check for module.method pattern (e.g., "math.")
-    const dotMatch = context.matchBefore(/[\w\-]+\.[\w\-\?]*/)
-    if (dotMatch) {
-      const [moduleName, methodPrefix] = dotMatch.text.split('.')
-      const methods = getModuleMethods(moduleName!)
-
-      if (methods.length > 0) {
-        const dotPos = dotMatch.from + moduleName!.length + 1
-        return {
-          from: dotPos,
-          options: methods.filter((m) => m.label.startsWith(methodPrefix ?? '')),
-        }
-      }
-    }
-
-    // Regular completions
-    const word = context.matchBefore(/[\w\-\?\$]+/)
-    if (!word || (word.from === word.to && !context.explicit)) return null
-
-    return {
-      from: word.from,
-      options: allCompletions.filter((c) => c.label.startsWith(word.text)),
-    }
-  }
-
-  return autocompletion({
-    override: [shrimpCompletionSource],
-  })
-}

src/editor/diagnostics.ts

@@ -1,24 +0,0 @@
-import { linter, type Diagnostic } from '@codemirror/lint'
-import { Shrimp } from '#/index'
-import { CompilerError } from '#compiler/compilerError'
-
-export const createShrimpDiagnostics = (shrimp: Shrimp) =>
-  linter((view) => {
-    const code = view.state.doc.toString()
-    const diagnostics: Diagnostic[] = []
-
-    try {
-      shrimp.parse(code)
-    } catch (err) {
-      if (err instanceof CompilerError) {
-        diagnostics.push({
-          from: err.from,
-          to: err.to,
-          severity: 'error',
-          message: err.message,
-        })
-      }
-    }
-
-    return diagnostics
-  })

src/editor/editor.css

@@ -1,78 +1,53 @@
-:root {
+#output {
-  /* Background colors */
+  flex: 1;
-  --bg-editor: #011627;
+  background: var(--bg-output);
-  --bg-output: #40318D;
+  color: var(--text-output);
-  --bg-status-bar: #1E2A4A;
+  padding: 20px;
-  --bg-status-border: #0E1A3A;
+  overflow-y: auto;
-  --bg-selection: #1D3B53;
+  white-space: pre-wrap;
-
-  /* Text colors */
-  --text-editor: #D6DEEB;
-  --text-output: #7C70DA;
-  --text-status: #B3A9FF55;
-  --caret: #80A4C2;
-
-  /* Syntax highlighting colors */
-  --color-keyword: #C792EA;
-  --color-function: #82AAFF;
-  --color-string: #C3E88D;
-  --color-number: #F78C6C;
-  --color-bool: #FF5370;
-  --color-operator: #89DDFF;
-  --color-paren: #676E95;
-  --color-function-call: #FF9CAC;
-  --color-variable-def: #FFCB6B;
-  --color-error: #FF6E6E;
-  --color-regex: #E1ACFF;
-
-  /* ANSI terminal colors */
-  --ansi-black: #011627;
-  --ansi-red: #FF5370;
-  --ansi-green: #C3E88D;
-  --ansi-yellow: #FFCB6B;
-  --ansi-blue: #82AAFF;
-  --ansi-magenta: #C792EA;
-  --ansi-cyan: #89DDFF;
-  --ansi-white: #D6DEEB;
-
-  /* ANSI bright colors (slightly more vibrant) */
-  --ansi-bright-black: #676E95;
-  --ansi-bright-red: #FF6E90;
-  --ansi-bright-green: #D4F6A8;
-  --ansi-bright-yellow: #FFE082;
-  --ansi-bright-blue: #A8C7FA;
-  --ansi-bright-magenta: #E1ACFF;
-  --ansi-bright-cyan: #A8F5FF;
-  --ansi-bright-white: #FFFFFF;
-}
-
-@font-face {
-  font-family: 'C64ProMono';
-  src: url('../../assets/C64_Pro_Mono-STYLE.woff2') format('woff2');
-  font-weight: normal;
-  font-style: normal;
-}
-
-@font-face {
-  font-family: 'Pixeloid Mono';
-  src: url('../../assets/PixeloidMono.ttf') format('truetype');
-  font-weight: normal;
-  font-style: normal;
-}
-
-* {
-  margin: 0;
-  padding: 0;
-  box-sizing: border-box;
-}
-
-body {
-  background-color: var(--bg-editor);
   font-family: 'Pixeloid Mono', 'Courier New', monospace;
   font-size: 18px;
-  height: 100vh;
 }
 
-#root {
+#status-bar {
-  height: 100vh;
+  height: 30px;
+  background: var(--bg-status-bar);
+  color: var(--text-status);
+  display: flex;
+  align-items: center;
+  padding: 0 10px;
+  font-size: 14px;
+  border-top: 3px solid var(--bg-status-border);
+  border-bottom: 3px solid var(--bg-status-border);
+
+  display: flex;
+  justify-content: space-between;
+}
+
+#status-bar .left,
+#status-bar .right {
+  display: flex;
+  justify-content: center;
+  gap: 2rem;
+}
+
+#status-bar .multiline {
+  display: flex;  
+
+  .dot {
+    padding-top: 1px;
+    margin-right: 4px;
+  }
+
+  .active {
+    color: var(--color-string);
+  }
+
+  .inactive {
+    color: inherit;
+  }
+}
+
+.syntax-error {
+  text-decoration: underline dotted var(--color-error);
 }

src/editor/editor.tsx

@@ -1,70 +1,140 @@
-import { EditorView, basicSetup } from 'codemirror'
+import { EditorView } from '@codemirror/view'
-import { Shrimp } from '#/index'
+import { asciiEscapeToHtml, assertNever, log, toElement } from '#utils/utils'
+import { Signal } from '#utils/signal'
+import { getContent } from '#editor/plugins/persistence'
+import type { HtmlEscapedString } from 'hono/utils/html'
+import { connectToNose, noseSignals } from '#editor/noseClient'
+import type { Value } from 'reefvm'
+import { Compartment } from '@codemirror/state'
+import { lineNumbers } from '@codemirror/view'
+import { shrimpSetup } from '#editor/plugins/shrimpSetup'
 
-import { shrimpTheme } from './theme'
+import '#editor/editor.css'
-import { createShrimpDiagnostics } from './diagnostics'
-import { shrimpHighlighter } from './highlighter'
-import { createShrimpCompletions } from './completions'
-import { shrimpKeymap } from './keymap'
-import { getContent, persistence } from './persistence'
 
-type EditorProps = {
+const lineNumbersCompartment = new Compartment()
-  initialCode?: string
-  onChange?: (code: string) => void
-  extensions?: import('@codemirror/state').Extension[]
-  shrimp?: Shrimp
-}
 
-export const Editor = ({
+connectToNose()
-  initialCode = '',
+
-  onChange,
+export const outputSignal = new Signal<Value | string>()
-  extensions: customExtensions = [],
+export const errorSignal = new Signal<string>()
-  shrimp = new Shrimp(),
+export const multilineModeSignal = new Signal<boolean>()
-}: EditorProps) => {
+
+export const Editor = () => {
   return (
-    <div
+    <>
-      ref={(el: Element) => {
+      <div
-        if (!el?.querySelector('.cm-editor'))
+        ref={(ref: Element) => {
-          createEditorView(el, getContent() ?? initialCode, onChange, customExtensions, shrimp)
+          if (ref?.querySelector('.cm-editor')) return
-      }}
+          const view = new EditorView({
-    />
+            parent: ref,
+            doc: getContent(),
+            extensions: shrimpSetup(lineNumbersCompartment),
+          })
+
+          multilineModeSignal.connect((isMultiline) => {
+            view.dispatch({
+              effects: lineNumbersCompartment.reconfigure(isMultiline ? lineNumbers() : []),
+            })
+          })
+
+          requestAnimationFrame(() => view.focus())
+        }}
+      />
+      <div id="status-bar">
+        <div className="left"></div>
+        <div className="right"></div>
+      </div>
+      <div id="output"></div>
+      <div id="error"></div>
+    </>
   )
 }
 
-const createEditorView = (
+noseSignals.connect((message) => {
-  el: Element,
+  if (message.type === 'error') {
-  initialCode: string,
+    log.error(`Nose error: ${message.data}`)
-  onChange: ((code: string) => void) | undefined,
+    errorSignal.emit(`Nose error: ${message.data}`)
-  customExtensions: import('@codemirror/state').Extension[],
+  } else if (message.type === 'reef-output') {
-  shrimp: Shrimp
+    const x = outputSignal.emit(message.data)
-) => {
+  } else if (message.type === 'connected') {
-  const extensions = [
+    outputSignal.emit(`╞ Connected to Nose VM`)
-    basicSetup,
-    shrimpTheme,
-    createShrimpDiagnostics(shrimp),
-    createShrimpCompletions(shrimp),
-    shrimpHighlighter,
-    shrimpKeymap,
-    persistence,
-    ...customExtensions,
-  ]
-
-  if (onChange) {
-    extensions.push(
-      EditorView.updateListener.of((update) => {
-        if (update.docChanged) {
-          onChange(update.state.doc.toString())
-        }
-      })
-    )
   }
+})
 
-  new EditorView({
+outputSignal.connect((value) => {
-    parent: el,
+  const el = document.querySelector('#output')!
-    doc: initialCode,
+  el.innerHTML = ''
-    extensions,
+  el.innerHTML = asciiEscapeToHtml(valueToString(value))
+})
+
+errorSignal.connect((error) => {
+  const el = document.querySelector('#output')!
+  el.innerHTML = ''
+  el.classList.add('error')
+  el.innerHTML = asciiEscapeToHtml(error)
+})
+
+type StatusBarMessage = {
+  side: 'left' | 'right'
+  message: string | Promise<HtmlEscapedString>
+  className: string
+  order?: number
+}
+export const statusBarSignal = new Signal<StatusBarMessage>()
+statusBarSignal.connect(async ({ side, message, className, order }) => {
+  document.querySelector(`#status-bar .${className}`)?.remove()
+
+  const sideEl = document.querySelector(`#status-bar .${side}`)!
+  const messageEl = (
+    <div data-order={order ?? 0} className={className}>
+      {await message}
+    </div>
+  )
+
+  // Now go through the nodes and put it in the right spot based on order. Higher number means further right
+  const nodes = Array.from(sideEl.childNodes)
+  const index = nodes.findIndex((node) => {
+    if (!(node instanceof HTMLElement)) return false
+    return Number(node.dataset.order) > (order ?? 0)
   })
 
-  // Trigger onChange with initial content
+  if (index === -1) {
-  onChange?.(initialCode)
+    sideEl.appendChild(toElement(messageEl))
+  } else {
+    sideEl.insertBefore(toElement(messageEl), nodes[index]!)
+  }
+})
+
+const valueToString = (value: Value | string): string => {
+  if (typeof value === 'string') {
+    return value
+  }
+
+  switch (value.type) {
+    case 'null':
+      return 'null'
+    case 'boolean':
+      return value.value ? 'true' : 'false'
+    case 'number':
+      return value.value.toString()
+    case 'string':
+      return value.value
+    case 'array':
+      return `${value.value.map(valueToString).join('\n')}`
+    case 'dict': {
+      const entries = Array.from(value.value.entries()).map(
+        ([key, val]) => `"${key}": ${valueToString(val)}`
+      )
+      return `{${entries.join(', ')}}`
+    }
+    case 'regex':
+      return `/${value.value.source}/`
+    case 'function':
+      return `<function>`
+    case 'native':
+      return `<function ${value.fn.name}>`
+    default:
+      assertNever(value)
+      return `<unknown value type: ${(value as any).type}>`
+  }
 }

src/editor/example/frontend.tsx

@@ -1,6 +0,0 @@
-import { Editor } from '#editor/editor'
-import { render } from 'hono/jsx/dom'
-
-if (typeof document !== 'undefined') {
-  render(<Editor initialCode={'# type some code'} />, document.getElementById('root')!)
-}

src/editor/example/index.html

@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <link rel="stylesheet" href="../editor.css" />
-  </head>
-  <body>
-    <div id="root"></div>
-    <script type="module" src="./frontend.tsx"></script>
-  </body>
-</html>

src/editor/example/server.tsx

@@ -1,14 +0,0 @@
-import index from './index.html'
-
-const server = Bun.serve({
-  port: 3000,
-  routes: {
-    '/': index,
-  },
-  development: {
-    hmr: true,
-    console: true,
-  },
-})
-
-console.log(`Editor running at ${server.url}`)

src/editor/highlighter.ts

@@ -1,73 +0,0 @@
-import { EditorView, Decoration, DecorationSet, ViewPlugin, ViewUpdate } from '@codemirror/view'
-import { RangeSetBuilder } from '@codemirror/state'
-import { Shrimp } from '#/index'
-import { type SyntaxNode } from '#parser/node'
-import { log } from '#utils/utils'
-
-const shrimp = new Shrimp()
-
-export const shrimpHighlighter = ViewPlugin.fromClass(
-  class {
-    decorations: DecorationSet
-
-    constructor(view: EditorView) {
-      this.decorations = this.highlight(view)
-    }
-
-    update(update: ViewUpdate) {
-      if (!update.docChanged) return
-
-      this.decorations = this.highlight(update.view)
-    }
-
-    highlight(view: EditorView): DecorationSet {
-      const builder = new RangeSetBuilder<Decoration>()
-      const code = view.state.doc.toString()
-
-      try {
-        const tree = shrimp.parse(code)
-        const decorations: { from: number; to: number; class: string }[] = []
-
-        tree.iterate({
-          enter: (node) => {
-            const cls = tokenStyles[node.type.name]
-            const isLeaf = node.children.length === 0
-            if (cls && isLeaf) {
-              decorations.push({ from: node.from, to: node.to, class: cls })
-            }
-          },
-        })
-
-        // Sort by position (required by RangeSetBuilder)
-        decorations.sort((a, b) => a.from - b.from)
-
-        for (const d of decorations) {
-          builder.add(d.from, d.to, Decoration.mark({ class: d.class }))
-        }
-      } catch (error) {
-        log('Parsing error in highlighter', error)
-      }
-
-      return builder.finish()
-    }
-  },
-  {
-    decorations: (v) => v.decorations,
-  }
-)
-
-// Map node types to CSS classes
-const tokenStyles: Record<string, string> = {
-  keyword: 'tok-keyword',
-  String: 'tok-string',
-  StringFragment: 'tok-string',
-  CurlyString: 'tok-string',
-  Number: 'tok-number',
-  Boolean: 'tok-bool',
-  Null: 'tok-null',
-  Identifier: 'tok-identifier',
-  AssignableIdentifier: 'tok-variable-def',
-  Comment: 'tok-comment',
-  operator: 'tok-operator',
-  Regex: 'tok-regex',
-}

src/editor/index.ts

@@ -1 +0,0 @@
-export { Editor } from './editor'

src/editor/keymap.ts

@@ -1,8 +0,0 @@
-import { keymap } from '@codemirror/view'
-import { acceptCompletion } from '@codemirror/autocomplete'
-import { indentWithTab } from '@codemirror/commands'
-
-export const shrimpKeymap = keymap.of([
-  { key: 'Tab', run: acceptCompletion },
-  indentWithTab,
-])

src/editor/noseClient.ts

@@ -0,0 +1,59 @@
+import { Signal } from '#utils/signal'
+import type { Bytecode, Value } from 'reefvm'
+let ws: WebSocket
+
+type IncomingMessage =
+  | { type: 'connected' }
+  | { type: 'ping'; data: number }
+  | { type: 'commands'; data: number }
+  | {
+      type: 'apps'
+      data: {
+        name: string
+        type: 'browser' | 'server'
+      }[]
+    }
+  | {
+      type: 'session:start'
+      data: {
+        NOSE_DIR: string
+        cwd: string
+        hostname: string
+        mode: string
+        project: string
+      }
+    }
+  | { type: 'reef-output'; data: Value }
+  | { type: 'error'; data: string }
+
+export const noseSignals = new Signal<IncomingMessage>()
+
+export const connectToNose = (url: string = 'ws://localhost:3000/ws') => {
+  ws = new WebSocket(url)
+  ws.onopen = () => noseSignals.emit({ type: 'connected' })
+
+  ws.onmessage = (event) => {
+    const message = JSON.parse(event.data)
+    noseSignals.emit(message)
+  }
+
+  ws.onerror = (event) => {
+    console.error(`💥WebSocket error:`, event)
+  }
+
+  ws.onclose = () => {
+    console.log(`🚪 Connection closed`)
+  }
+}
+
+let id = 0
+export const sendToNose = (code: Bytecode) => {
+  if (!ws) {
+    throw new Error('WebSocket is not connected.')
+  } else if (ws.readyState !== WebSocket.OPEN) {
+    throw new Error(`WebSocket is not open, current status is ${ws.readyState}.`)
+  }
+
+  id += 1
+  ws.send(JSON.stringify({ type: 'reef-bytecode', data: code, id }))
+}

src/editor/plugins/catchErrors.ts

@@ -0,0 +1,9 @@
+import { errorSignal } from '#editor/editor'
+import { EditorView } from '@codemirror/view'
+
+export const catchErrors = EditorView.exceptionSink.of((exception) => {
+  console.error('CodeMirror error:', exception)
+  errorSignal.emit(
+    `Editor error: ${exception instanceof Error ? exception.message : String(exception)}`
+  )
+})

src/editor/plugins/debugTags.ts

@@ -0,0 +1,35 @@
+import { EditorView, ViewPlugin, ViewUpdate } from '@codemirror/view'
+import { syntaxTree } from '@codemirror/language'
+import { statusBarSignal } from '#editor/editor'
+
+export const debugTags = ViewPlugin.fromClass(
+  class {
+    update(update: ViewUpdate) {
+      if (update.docChanged || update.selectionSet || update.geometryChanged) {
+        this.updateStatusBar(update.view)
+      }
+    }
+
+    updateStatusBar(view: EditorView) {
+      const pos = view.state.selection.main.head + 1
+      const tree = syntaxTree(view.state)
+
+      let tags: string[] = []
+      let node = tree.resolveInner(pos, -1)
+
+      while (node) {
+        tags.push(node.type.name)
+        node = node.parent!
+        if (!node) break
+      }
+
+      const debugText = tags.length ? tags.reverse().slice(1).join(' > ') : 'No nodes'
+      statusBarSignal.emit({
+        side: 'right',
+        message: debugText,
+        className: 'debug-tags',
+        order: -1,
+      })
+    }
+  }
+)

src/editor/plugins/errors.ts

@@ -0,0 +1,62 @@
+import { parser } from '#parser/shrimp'
+import type { Timeout } from '#utils/utils'
+import { Range } from '@codemirror/state'
+import {
+  Decoration,
+  EditorView,
+  ViewPlugin,
+  ViewUpdate,
+  type DecorationSet,
+} from '@codemirror/view'
+
+export const shrimpErrors = ViewPlugin.fromClass(
+  class {
+    timeout?: Timeout
+    decorations: DecorationSet = Decoration.none
+
+    constructor(view: EditorView) {
+      this.updateErrors(view)
+    }
+
+    update(update: ViewUpdate) {
+      if (update.docChanged) {
+        this.debounceUpdate(update.view)
+      }
+    }
+
+    updateErrors(view: EditorView) {
+      this.decorations = Decoration.none
+      try {
+        const decorations: Range<Decoration>[] = []
+        const tree = parser.parse(view.state.doc.toString())
+        tree.iterate({
+          enter: (node) => {
+            if (!node.type.isError) return
+
+            // Skip empty error nodes
+            if (node.from === node.to) return
+
+            const decoration = Decoration.mark({
+              class: 'syntax-error',
+              attributes: { title: 'COREY REPLACE THIS' },
+            }).range(node.from, node.to)
+            decorations.push(decoration)
+          },
+        })
+
+        this.decorations = Decoration.set(decorations)
+        // requestAnimationFrame(() => view.dispatch({}))
+      } catch (e) {
+        console.error('🙈 Error parsing document', e)
+      }
+    }
+
+    debounceUpdate = (view: EditorView) => {
+      clearTimeout(this.timeout)
+      this.timeout = setTimeout(() => this.updateErrors(view), 250)
+    }
+  },
+  {
+    decorations: (v) => v.decorations,
+  }
+)

src/editor/plugins/inlineHints.tsx

@@ -0,0 +1,232 @@
+import {
+  ViewPlugin,
+  ViewUpdate,
+  EditorView,
+  Decoration,
+  type DecorationSet,
+} from '@codemirror/view'
+import { syntaxTree } from '@codemirror/language'
+import { type SyntaxNode } from '@lezer/common'
+import { WidgetType } from '@codemirror/view'
+import { toElement } from '#utils/utils'
+import { matchingCommands } from '#editor/commands'
+import * as Terms from '#parser/shrimp.terms'
+
+const ghostTextTheme = EditorView.theme({
+  '.ghost-text': {
+    color: '#666',
+    opacity: '0.6',
+    fontStyle: 'italic',
+  },
+})
+
+type Hint = { cursor: number; hintText?: string; completionText?: string }
+
+export const inlineHints = [
+  ViewPlugin.fromClass(
+    class {
+      decorations: DecorationSet = Decoration.none
+      currentHint?: Hint
+
+      update(update: ViewUpdate) {
+        if (!update.docChanged && !update.selectionSet) return
+
+        this.clearHints()
+        let hint = this.getContext(update.view)
+        this.currentHint = hint
+        this.showHint(hint)
+      }
+
+      handleTab(view: EditorView) {
+        if (!this.currentHint?.completionText) return false
+
+        this.decorations = Decoration.none
+        view.dispatch({
+          changes: {
+            from: this.currentHint.cursor,
+            insert: this.currentHint.completionText,
+          },
+          selection: {
+            anchor: this.currentHint.cursor + this.currentHint.completionText.length,
+          },
+        })
+        this.currentHint = undefined
+        return true
+      }
+
+      clearHints() {
+        this.currentHint = undefined
+        this.decorations = Decoration.none
+      }
+
+      getContext(view: EditorView): Hint {
+        const cursor = view.state.selection.main.head
+
+        const isCursorAtEnd = cursor === view.state.doc.length
+        if (!isCursorAtEnd) return { cursor }
+
+        const token = this.getCommandContextToken(view, cursor)
+        if (!token) return { cursor }
+
+        const text = view.state.doc.sliceString(token.from, token.to)
+        const tokenId = token.type.id
+
+        let completionText = ''
+        let hintText = ''
+        const justSpaces = view.state.doc.sliceString(cursor - 1, cursor) === ' '
+
+        if (tokenId === Terms.CommandPartial) {
+          const { partialMatches } = matchingCommands(text)
+          const match = partialMatches[0]
+          if (match) {
+            completionText = match.command.slice(text.length) + ' '
+            hintText = completionText
+          }
+        } else if (
+          tokenId === Terms.Identifier &&
+          token.parent?.type.id === Terms.Arg &&
+          !justSpaces
+        ) {
+          const { availableArgs } = this.getCommandContext(view, token)
+          const matchingArgs = availableArgs.filter((arg) => arg.name.startsWith(text))
+          const match = matchingArgs[0]
+          if (match) {
+            hintText = `${match.name.slice(text.length)}=<${match.type}>`
+            completionText = `${match.name.slice(text.length)}=`
+          }
+        } else if (this.containedBy(token, Terms.PartialNamedArg)) {
+          const { availableArgs } = this.getCommandContext(view, token)
+          const textWithoutEquals = text.slice(0, -1)
+          const matchingArgs = availableArgs.filter((arg) => arg.name == textWithoutEquals)
+          const match = matchingArgs[0]
+          if (match) {
+            hintText = `<${match.type}>`
+            completionText = 'default' in match ? `${match.default}` : ''
+          }
+        } else {
+          const { availableArgs } = this.getCommandContext(view, token)
+          const nextArg = Array.from(availableArgs)[0]
+          const space = justSpaces ? '' : ' '
+          if (nextArg) {
+            hintText = `${space}${nextArg.name}=<${nextArg.type}>`
+            if (nextArg) {
+              completionText = `${space}${nextArg.name}=`
+            }
+          }
+        }
+
+        return { completionText, hintText, cursor }
+      }
+
+      getCommandContextToken(view: EditorView, cursor: number) {
+        const tree = syntaxTree(view.state)
+        let node = tree.resolveInner(cursor, -1)
+
+        // If we're in a CommandCall, return the token before cursor
+        if (this.containedBy(node, Terms.CommandCall)) {
+          return tree.resolveInner(cursor, -1)
+        }
+
+        // If we're in Program, look backward
+        while (node.name === 'Program' && cursor > 0) {
+          cursor -= 1
+          node = tree.resolveInner(cursor, -1)
+          if (this.containedBy(node, Terms.CommandCall)) {
+            return tree.resolveInner(cursor, -1)
+          }
+        }
+      }
+
+      containedBy(node: SyntaxNode, nodeId: number): SyntaxNode | undefined {
+        let current: SyntaxNode | undefined = node
+
+        while (current) {
+          if (current.type.id === nodeId) {
+            return current
+          }
+
+          current = current.parent ?? undefined
+        }
+      }
+
+      showHint(hint: Hint) {
+        if (!hint.hintText) return
+
+        const widget = new GhostTextWidget(hint.hintText)
+        const afterCursor = 1
+        const decoration = Decoration.widget({ widget, side: afterCursor }).range(hint.cursor)
+        this.decorations = Decoration.set([decoration])
+      }
+
+      getCommandContext(view: EditorView, currentToken: SyntaxNode) {
+        let commandCallNode = currentToken.parent
+        while (commandCallNode?.type.name !== 'CommandCall') {
+          if (!commandCallNode) {
+            throw new Error('No CommandCall parent found, must be an error in the grammar')
+          }
+          commandCallNode = commandCallNode.parent
+        }
+
+        const commandToken = commandCallNode.firstChild
+        if (!commandToken) {
+          throw new Error('CommandCall has no children, must be an error in the grammar')
+        }
+
+        const commandText = view.state.doc.sliceString(commandToken.from, commandToken.to)
+        const { match: commandShape } = matchingCommands(commandText)
+        if (!commandShape) {
+          throw new Error(`No command shape found for command "${commandText}"`)
+        }
+
+        let availableArgs = [...commandShape.args]
+
+        // Walk through all NamedArg children
+        let child = commandToken.nextSibling
+
+        while (child) {
+          console.log('child', child.type.name, child.to - child.from)
+          if (child.type.id === Terms.NamedArg) {
+            const argName = child.firstChild // Should be the Identifier
+            if (argName) {
+              const argText = view.state.doc.sliceString(argName.from, argName.to - 1)
+              availableArgs = availableArgs.filter((arg) => arg.name !== argText)
+            }
+          } else if (child.type.id == Terms.Arg) {
+            const hasSpaceAfter = view.state.doc.sliceString(child.to, child.to + 1) === ' '
+            if (hasSpaceAfter) {
+              availableArgs.shift()
+            }
+          }
+
+          child = child.nextSibling
+        }
+
+        return { commandShape, availableArgs }
+      }
+    },
+    {
+      decorations: (v) => v.decorations,
+      eventHandlers: {
+        keydown(event, view) {
+          if (event.key === 'Tab') {
+            event.preventDefault()
+            const plugin = view.plugin(inlineHints[0]! as ViewPlugin<any>)
+            plugin?.handleTab(view)
+          }
+        },
+      },
+    }
+  ),
+  ghostTextTheme,
+]
+
+class GhostTextWidget extends WidgetType {
+  constructor(private text: string) {
+    super()
+  }
+
+  toDOM() {
+    const el = <span className="ghost-text">{this.text}</span>
+    return toElement(el)
+  }
+}

src/editor/plugins/keymap.tsx

@@ -0,0 +1,184 @@
+import { multilineModeSignal, outputSignal } from '#editor/editor'
+import { printBytecodeOutput, printParserOutput, runCode } from '#editor/runCode'
+import { EditorState } from '@codemirror/state'
+import { keymap } from '@codemirror/view'
+
+let multilineMode = false
+
+const customKeymap = keymap.of([
+  {
+    key: 'Enter',
+    run: (view) => {
+      if (multilineMode) return false
+
+      const input = view.state.doc.toString()
+      history.push(input)
+      runCode(input)
+      view.dispatch({
+        changes: { from: 0, to: view.state.doc.length, insert: '' },
+        selection: { anchor: 0 },
+      })
+      return true
+    },
+  },
+
+  {
+    key: 'Shift-Enter',
+    run: (view) => {
+      if (multilineMode) {
+        const input = view.state.doc.toString()
+        runCode(input)
+
+        return true
+      } else {
+        outputSignal.emit('Press Shift+Enter to insert run the code.')
+      }
+
+      multilineModeSignal.emit(true)
+      multilineMode = true
+      view.dispatch({
+        changes: { from: view.state.doc.length, insert: '\n' },
+        selection: { anchor: view.state.doc.length + 1 },
+      })
+
+      return true
+    },
+  },
+
+  {
+    key: 'Tab',
+    preventDefault: true,
+    run: (view) => {
+      view.dispatch({
+        changes: { from: view.state.selection.main.from, insert: '  ' },
+        selection: { anchor: view.state.selection.main.from + 2 },
+      })
+      return true
+    },
+  },
+
+  {
+    key: 'ArrowUp',
+    run: (view) => {
+      if (multilineMode) return false
+
+      const command = history.previous()
+      if (command === undefined) return false
+      view.dispatch({
+        changes: { from: 0, to: view.state.doc.length, insert: command },
+        selection: { anchor: command.length },
+      })
+      return true
+    },
+  },
+
+  {
+    key: 'ArrowDown',
+    run: (view) => {
+      if (multilineMode) return false
+
+      const command = history.next()
+      if (command === undefined) return false
+      view.dispatch({
+        changes: { from: 0, to: view.state.doc.length, insert: command },
+        selection: { anchor: command.length },
+      })
+      return true
+    },
+  },
+
+  {
+    key: 'Mod-k 1',
+    preventDefault: true,
+    run: (view) => {
+      const input = view.state.doc.toString()
+      printParserOutput(input)
+
+      return true
+    },
+  },
+
+  {
+    key: 'Mod-k 2',
+    preventDefault: true,
+    run: (view) => {
+      const input = view.state.doc.toString()
+      printBytecodeOutput(input)
+
+      return true
+    },
+  },
+])
+
+let firstTime = true
+const singleLineFilter = EditorState.transactionFilter.of((transaction) => {
+  if (multilineMode) return transaction // Allow everything in multiline mode
+
+  if (firstTime) {
+    firstTime = false
+    if (transaction.newDoc.toString().includes('\n')) {
+      multilineMode = true
+      return transaction
+    }
+  }
+
+  transaction.changes.iterChanges((fromA, toA, fromB, toB, inserted) => {
+    if (inserted.toString().includes('\n')) {
+      multilineMode = true
+      return
+    }
+  })
+
+  return transaction
+})
+
+export const shrimpKeymap = [customKeymap, singleLineFilter]
+
+class History {
+  private commands: string[] = []
+  private index: number | undefined
+  private storageKey = 'shrimp-command-history'
+
+  constructor() {
+    try {
+      this.commands = JSON.parse(localStorage.getItem(this.storageKey) || '[]')
+    } catch {
+      console.warn('Failed to load command history from localStorage')
+    }
+  }
+
+  push(command: string) {
+    this.commands.push(command)
+
+    // Limit to last 50 commands
+    this.commands = this.commands.slice(-50)
+    localStorage.setItem(this.storageKey, JSON.stringify(this.commands))
+    this.index = undefined
+  }
+
+  previous(): string | undefined {
+    if (this.commands.length === 0) return
+
+    if (this.index === undefined) {
+      this.index = this.commands.length - 1
+    } else if (this.index > 0) {
+      this.index -= 1
+    }
+
+    return this.commands[this.index]
+  }
+
+  next(): string | undefined {
+    if (this.commands.length === 0 || this.index === undefined) return
+
+    if (this.index < this.commands.length - 1) {
+      this.index += 1
+      return this.commands[this.index]
+    } else {
+      this.index = undefined
+      return ''
+    }
+  }
+}
+
+const history = new History()

src/editor/plugins/persistence.ts

@@ -1,6 +1,6 @@
 import { ViewPlugin, ViewUpdate } from '@codemirror/view'
 
-export const persistence = ViewPlugin.fromClass(
+export const persistencePlugin = ViewPlugin.fromClass(
   class {
     saveTimeout?: ReturnType<typeof setTimeout>
 
@@ -24,6 +24,6 @@ export const getContent = () => {
   return localStorage.getItem('shrimp-editor-content') || ''
 }
 
-export const setContent = (data: string) => {
+const setContent = (data: string) => {
   localStorage.setItem('shrimp-editor-content', data)
 }

src/editor/plugins/shrimpLanguage.ts

@@ -0,0 +1,9 @@
+import { parser } from '#/parser/shrimp'
+import { LRLanguage, LanguageSupport } from '@codemirror/language'
+import { highlighting } from '#/parser/highlight.js'
+
+const language = LRLanguage.define({
+  parser: parser.configure({ props: [highlighting] }),
+})
+
+export const shrimpLanguage = new LanguageSupport(language)

src/editor/plugins/shrimpSetup.ts

@@ -0,0 +1,35 @@
+import { history, defaultKeymap, historyKeymap } from '@codemirror/commands'
+import { bracketMatching, indentOnInput } from '@codemirror/language'
+import { highlightSpecialChars, drawSelection, dropCursor, keymap } from '@codemirror/view'
+import { closeBrackets, autocompletion, completionKeymap } from '@codemirror/autocomplete'
+import { EditorState, Compartment } from '@codemirror/state'
+import { searchKeymap } from '@codemirror/search'
+import { shrimpKeymap } from './keymap'
+import { shrimpTheme, shrimpHighlighting } from './theme'
+import { shrimpLanguage } from './shrimpLanguage'
+import { shrimpErrors } from './errors'
+import { persistencePlugin } from './persistence'
+import { catchErrors } from './catchErrors'
+
+export const shrimpSetup = (lineNumbersCompartment: Compartment) => {
+  return [
+    catchErrors,
+    shrimpKeymap,
+    highlightSpecialChars(),
+    history(),
+    drawSelection(),
+    dropCursor(),
+    EditorState.allowMultipleSelections.of(true),
+    bracketMatching(),
+    closeBrackets(),
+    autocompletion(),
+    indentOnInput(),
+    keymap.of([...defaultKeymap, ...historyKeymap, ...searchKeymap, ...completionKeymap]),
+    lineNumbersCompartment.of([]),
+    shrimpTheme,
+    shrimpLanguage,
+    shrimpHighlighting,
+    shrimpErrors,
+    persistencePlugin,
+  ]
+}

src/editor/plugins/theme.tsx

@@ -0,0 +1,60 @@
+import { EditorView } from '@codemirror/view'
+import { HighlightStyle, syntaxHighlighting } from '@codemirror/language'
+import { tags } from '@lezer/highlight'
+
+const highlightStyle = HighlightStyle.define([
+  { tag: tags.keyword, color: 'var(--color-keyword)' },
+  { tag: tags.name, color: 'var(--color-function)' },
+  { tag: tags.string, color: 'var(--color-string)' },
+  { tag: tags.number, color: 'var(--color-number)' },
+  { tag: tags.bool, color: 'var(--color-bool)' },
+  { tag: tags.operator, color: 'var(--color-operator)' },
+  { tag: tags.paren, color: 'var(--color-paren)' },
+  { tag: tags.regexp, color: 'var(--color-regex)' },
+  { tag: tags.function(tags.variableName), color: 'var(--color-function-call)' },
+  { tag: tags.function(tags.invalid), color: 'white' },
+  {
+    tag: tags.definition(tags.variableName),
+    color: 'var(--color-variable-def)',
+    backgroundColor: 'var(--bg-variable-def)',
+    padding: '1px 2px',
+    borderRadius: '2px',
+    fontWeight: '500',
+  },
+])
+
+export const shrimpHighlighting = syntaxHighlighting(highlightStyle)
+
+export const shrimpTheme = EditorView.theme(
+  {
+    '&': {
+      color: 'var(--text-editor)',
+      backgroundColor: 'var(--bg-editor)',
+      height: '100%',
+      fontSize: '18px',
+    },
+    '.cm-content': {
+      fontFamily: '"Pixeloid Mono", "Courier New", monospace',
+      caretColor: 'var(--caret)',
+      padding: '0px',
+    },
+    '&.cm-focused .cm-cursor': {
+      borderLeftColor: 'var(--caret)',
+    },
+    '&.cm-focused .cm-selectionBackground, ::selection': {
+      backgroundColor: 'var(--bg-selection)',
+    },
+    '.cm-editor': {
+      border: 'none',
+      outline: 'none',
+      height: '100%',
+    },
+    '.cm-matchingBracket': {
+      backgroundColor: 'var(--color-bool)',
+    },
+    '.cm-nonmatchingBracket': {
+      backgroundColor: 'var(--color-string)',
+    },
+  },
+  { dark: true }
+)

src/editor/runCode.tsx

@@ -0,0 +1,38 @@
+import { outputSignal, errorSignal } from '#editor/editor'
+import { Compiler } from '#compiler/compiler'
+import { errorMessage, log } from '#utils/utils'
+import { bytecodeToString } from 'reefvm'
+import { parser } from '#parser/shrimp'
+import { sendToNose } from '#editor/noseClient'
+import { treeToString } from '#utils/tree'
+
+export const runCode = async (input: string) => {
+  try {
+    const compiler = new Compiler(input)
+    sendToNose(compiler.bytecode)
+  } catch (error) {
+    log.error(error)
+    errorSignal.emit(`${errorMessage(error)}`)
+  }
+}
+
+export const printParserOutput = (input: string) => {
+  try {
+    const cst = parser.parse(input)
+    const string = treeToString(cst, input)
+    outputSignal.emit(string)
+  } catch (error) {
+    log.error(error)
+    errorSignal.emit(`${errorMessage(error)}`)
+  }
+}
+
+export const printBytecodeOutput = (input: string) => {
+  try {
+    const compiler = new Compiler(input)
+    outputSignal.emit(bytecodeToString(compiler.bytecode))
+  } catch (error) {
+    log.error(error)
+    errorSignal.emit(`${errorMessage(error)}`)
+  }
+}

src/editor/theme.ts

@@ -1,51 +0,0 @@
-import { EditorView } from '@codemirror/view'
-
-export const shrimpTheme = EditorView.theme(
-  {
-    '&': {
-      color: 'var(--text-editor)',
-      backgroundColor: 'var(--bg-editor)',
-      height: '100%',
-      fontSize: '18px',
-    },
-    '.cm-content': {
-      fontFamily: '"Pixeloid Mono", "Courier New", monospace',
-      caretColor: 'var(--caret)',
-      padding: '0px',
-      borderTop: '1px solid var(--bg-editor)',
-    },
-    '&.cm-focused .cm-cursor': {
-      borderLeftColor: 'var(--caret)',
-    },
-    '.cm-selectionLayer .cm-selectionBackground': {
-      backgroundColor: 'var(--bg-selection)',
-    },
-    '.cm-editor': {
-      border: 'none',
-      outline: 'none',
-      height: '100%',
-    },
-    '.cm-matchingBracket': {
-      backgroundColor: 'var(--color-bool)',
-    },
-    '.cm-nonmatchingBracket': {
-      backgroundColor: 'var(--color-string)',
-    },
-    '.cm-activeLine': {
-      backgroundColor: 'rgba(255, 255, 255, 0.03)',
-    },
-
-    // Token highlighting
-    '.tok-keyword': { color: 'var(--color-keyword)' },
-    '.tok-string': { color: 'var(--color-string)' },
-    '.tok-number': { color: 'var(--color-number)' },
-    '.tok-bool': { color: 'var(--color-bool)' },
-    '.tok-null': { color: 'var(--color-number)', fontStyle: 'italic' },
-    '.tok-identifier': { color: 'var(--color-function)' },
-    '.tok-variable-def': { color: 'var(--color-variable-def)' },
-    '.tok-comment': { color: 'var(--ansi-bright-black)', fontStyle: 'italic' },
-    '.tok-operator': { color: 'var(--color-operator)' },
-    '.tok-regex': { color: 'var(--color-regex)' },
-  },
-  { dark: true }
-)

src/index.ts

@@ -1,114 +1,73 @@
 import { readFileSync } from 'fs'
-import { VM, fromValue, toValue, isValue, type Bytecode } from 'reefvm'
+import { VM, fromValue, type Bytecode } from 'reefvm'
 import { Compiler } from '#compiler/compiler'
-import { parse } from '#parser/parser2'
+import { globals as shrimpGlobals, colors } from '#prelude'
-import { Tree } from '#parser/node'
-import { globals as parserGlobals, setGlobals as setParserGlobals } from '#parser/parser2'
-import { globals as prelude } from '#prelude'
 
 export { Compiler } from '#compiler/compiler'
-export { parse } from '#parser/parser2'
+export { parser } from '#parser/shrimp'
-export { type SyntaxNode, Tree } from '#parser/node'
+export { globals } from '#prelude'
-export { globals as prelude } from '#prelude'
-export { type Value, type Bytecode } from 'reefvm'
-export { toValue, fromValue, isValue, Scope, VM, bytecodeToString } from 'reefvm'
 
 export class Shrimp {
-  vm: VM
+    vm: VM
-  private globals?: Record<string, any>
+    private globals?: Record<string, any>
 
-  constructor(globals?: Record<string, any>) {
+    constructor(globals?: Record<string, any>) {
-    const emptyBytecode = { instructions: [], constants: [], labels: new Map() }
+        const emptyBytecode = { instructions: [], constants: [], labels: new Map() }
-    this.vm = new VM(emptyBytecode, Object.assign({}, prelude, globals ?? {}))
+        this.vm = new VM(emptyBytecode, Object.assign({}, shrimpGlobals, globals ?? {}))
-    this.globals = globals
+        this.globals = globals
-  }
-
-  get(name: string): any {
-    const value = this.vm.scope.get(name)
-    return value ? fromValue(value, this.vm) : null
-  }
-
-  set(name: string, value: any) {
-    this.vm.scope.set(name, toValue(value, this.vm))
-  }
-
-  has(name: string): boolean {
-    return this.vm.scope.has(name)
-  }
-
-  async call(name: string, ...args: any[]): Promise<any> {
-    const result = await this.vm.call(name, ...args)
-    return isValue(result) ? fromValue(result, this.vm) : result
-  }
-
-  parse(code: string): Tree {
-    return parseCode(code, this.globals)
-  }
-
-  compile(code: string): Bytecode {
-    return compileCode(code, this.globals)
-  }
-
-  async run(code: string | Bytecode, locals?: Record<string, any>): Promise<any> {
-    let bytecode
-
-    if (typeof code === 'string') {
-      const compiler = new Compiler(
-        code,
-        Object.keys(Object.assign({}, prelude, this.globals ?? {}, locals ?? {})),
-      )
-      bytecode = compiler.bytecode
-    } else {
-      bytecode = code
     }
 
-    if (locals) this.vm.pushScope(locals)
+    async run(code: string | Bytecode, locals?: Record<string, any>): Promise<any> {
-    this.vm.appendBytecode(bytecode)
+        let bytecode
-    await this.vm.continue()
-    if (locals) this.vm.popScope()
 
-    return this.vm.stack.length ? fromValue(this.vm.stack.at(-1)!, this.vm) : null
+        if (typeof code === 'string') {
-  }
+            const compiler = new Compiler(code, Object.keys(Object.assign({}, shrimpGlobals, this.globals ?? {}, locals ?? {})))
+            bytecode = compiler.bytecode
+        } else {
+            bytecode = code
+        }
+
+        if (locals) this.vm.pushScope(locals)
+        this.vm.appendBytecode(bytecode)
+        await this.vm.continue()
+        if (locals) this.vm.popScope()
+
+        return this.vm.stack.length ? fromValue(this.vm.stack.at(-1)!) : null
+    }
+
+    get(name: string): any {
+        const value = this.vm.scope.get(name)
+        return value ? fromValue(value) : null
+    }
 }
 
 export async function runFile(path: string, globals?: Record<string, any>): Promise<any> {
-  const code = readFileSync(path, 'utf-8')
+    const code = readFileSync(path, 'utf-8')
-  return await runCode(code, globals)
+    return await runCode(code, globals)
 }
 
 export async function runCode(code: string, globals?: Record<string, any>): Promise<any> {
-  return await runBytecode(compileCode(code, globals), globals)
+    return await runBytecode(compileCode(code, globals), globals)
 }
 
 export async function runBytecode(bytecode: Bytecode, globals?: Record<string, any>): Promise<any> {
-  const vm = new VM(bytecode, Object.assign({}, prelude, globals))
+    try {
-  await vm.run()
+        const vm = new VM(bytecode, Object.assign({}, shrimpGlobals, globals))
-  return vm.stack.length ? fromValue(vm.stack[vm.stack.length - 1]!, vm) : null
+        await vm.run()
+        return vm.stack.length ? fromValue(vm.stack[vm.stack.length - 1]!) : null
+    } catch (error: any) {
+        console.error(`${colors.red}Error:${colors.reset} ${error.message}`)
+        process.exit(1)
+    }
 }
 
 export function compileFile(path: string, globals?: Record<string, any>): Bytecode {
-  const code = readFileSync(path, 'utf-8')
+    const code = readFileSync(path, 'utf-8')
-  return compileCode(code, globals)
+    return compileCode(code, globals)
 }
 
 export function compileCode(code: string, globals?: Record<string, any>): Bytecode {
-  const globalNames = [...Object.keys(prelude), ...(globals ? Object.keys(globals) : [])]
+    const globalNames = [...Object.keys(shrimpGlobals), ...(globals ? Object.keys(globals) : [])]
-  const compiler = new Compiler(code, globalNames)
+    const compiler = new Compiler(code, globalNames)
-  return compiler.bytecode
+    return compiler.bytecode
-}
+}
-
-export function parseFile(path: string, globals?: Record<string, any>): Tree {
-  const code = readFileSync(path, 'utf-8')
-  return parseCode(code, globals)
-}
-
-export function parseCode(code: string, globals?: Record<string, any>): Tree {
-  const oldGlobals = [...parserGlobals]
-  const globalNames = [...Object.keys(prelude), ...(globals ? Object.keys(globals) : [])]
-
-  setParserGlobals(globalNames)
-  const result = parse(code)
-  setParserGlobals(oldGlobals)
-
-  return new Tree(result)
-}

src/parser/curlyTokenizer.ts

@@ -1,61 +0,0 @@
-import { parse } from '#parser/parser2'
-import type { SyntaxNode } from '#parser/node'
-import { isIdentStart, isIdentChar } from './tokenizer2'
-
-// Turns a { curly string } into strings and nodes for interpolation
-export const tokenizeCurlyString = (value: string): (string | [string, SyntaxNode])[] => {
-  let pos = 1
-  let start = 1
-  let char = value[pos]
-  const tokens: (string | [string, SyntaxNode])[] = []
-
-  while (pos < value.length) {
-    if (char === '$') {
-      // escaped \$
-      if (value[pos - 1] === '\\' && value[pos - 2] !== '\\') {
-        tokens.push(value.slice(start, pos - 1))
-        start = pos
-        char = value[++pos]
-        continue
-      }
-
-      tokens.push(value.slice(start, pos))
-      start = pos
-
-      if (value[pos + 1] === '(') {
-        pos++ // slip opening '('
-
-        char = value[++pos]
-        if (!char) break
-
-        let depth = 0
-        while (char) {
-          if (char === '(') depth++
-          if (char === ')') depth--
-          if (depth < 0) break
-          char = value[++pos]
-        }
-
-        const input = value.slice(start + 2, pos) // skip '$('
-        tokens.push([input, parse(input)])
-        start = pos + 1 // start after ')'
-      } else {
-        char = value[++pos]
-        if (!char) break
-        if (!isIdentStart(char.charCodeAt(0))) break
-
-        while (char && isIdentChar(char.charCodeAt(0))) char = value[++pos]
-
-        const input = value.slice(start + 1, pos) // skip '$'
-        tokens.push([input, parse(input)])
-        start = pos-- // backtrack and start over
-      }
-    }
-
-    char = value[++pos]
-  }
-
-  tokens.push(value.slice(start, pos - 1))
-
-  return tokens
-}

src/parser/node.ts

@@ -1,264 +0,0 @@
-import { type Token, TokenType } from './tokenizer2'
-
-export type NodeType =
-  | 'Program'
-  | 'Block'
-  | 'FunctionCall'
-  | 'FunctionCallOrIdentifier'
-  | 'FunctionCallWithBlock'
-  | 'PositionalArg'
-  | 'NamedArg'
-  | 'NamedArgPrefix'
-  | 'FunctionDef'
-  | 'Params'
-  | 'NamedParam'
-  | 'Null'
-  | 'Boolean'
-  | 'Number'
-  | 'String'
-  | 'StringFragment'
-  | 'CurlyString'
-  | 'DoubleQuote'
-  | 'EscapeSeq'
-  | 'Interpolation'
-  | 'Regex'
-  | 'Identifier'
-  | 'AssignableIdentifier'
-  | 'IdentifierBeforeDot'
-  | 'Word'
-  | 'Array'
-  | 'Dict'
-  | 'Comment'
-  | 'BinOp'
-  | 'ConditionalOp'
-  | 'ParenExpr'
-  | 'Assign'
-  | 'CompoundAssign'
-  | 'DotGet'
-  | 'PipeExpr'
-  | 'IfExpr'
-  | 'ElseIfExpr'
-  | 'ElseExpr'
-  | 'WhileExpr'
-  | 'TryExpr'
-  | 'CatchExpr'
-  | 'FinallyExpr'
-  | 'Throw'
-  | 'Not'
-  | 'Eq'
-  | 'Modulo'
-  | 'Plus'
-  | 'Star'
-  | 'Slash'
-  | 'Import'
-  | 'Do'
-  | 'Underscore'
-  | 'colon'
-  | 'keyword'
-  | 'operator'
-
-// TODO: remove this when we switch from lezer
-export const operators: Record<string, any> = {
-  // Logic
-  and: 'And',
-  or: 'Or',
-
-  // Bitwise
-  band: 'Band',
-  bor: 'Bor',
-  bxor: 'Bxor',
-  '>>>': 'Ushr',
-  '>>': 'Shr',
-  '<<': 'Shl',
-
-  // Comparison
-  '>=': 'Gte',
-  '<=': 'Lte',
-  '>': 'Gt',
-  '<': 'Lt',
-  '!=': 'Neq',
-  '==': 'EqEq',
-
-  // Compound assignment operators
-  '??=': 'NullishEq',
-  '+=': 'PlusEq',
-  '-=': 'MinusEq',
-  '*=': 'StarEq',
-  '/=': 'SlashEq',
-  '%=': 'ModuloEq',
-
-  // Nullish coalescing
-  '??': 'NullishCoalesce',
-
-  // Math
-  '*': 'Star',
-  '**': 'StarStar',
-  '=': 'Eq',
-  '/': 'Slash',
-  '+': 'Plus',
-  '-': 'Minus',
-  '%': 'Modulo',
-
-  // Dotget
-  '.': 'Dot',
-
-  // Pipe
-  '|': 'operator',
-}
-
-export class Tree {
-  constructor(public topNode: SyntaxNode) {}
-
-  get length(): number {
-    return this.topNode.to
-  }
-
-  cursor() {
-    return {
-      type: this.topNode.type,
-      from: this.topNode.from,
-      to: this.topNode.to,
-      node: this.topNode,
-    }
-  }
-
-  iterate(options: { enter: (node: SyntaxNode) => void }) {
-    const iter = (node: SyntaxNode) => {
-      for (const n of node.children) iter(n)
-      options.enter(node)
-    }
-
-    iter(this.topNode)
-  }
-}
-
-export class SyntaxNode {
-  #type: NodeType
-  #isError = false
-  from: number
-  to: number
-  parent: SyntaxNode | null
-  children: SyntaxNode[] = []
-
-  constructor(type: NodeType, from: number, to: number, parent: SyntaxNode | null = null) {
-    this.#type = type
-    this.from = from
-    this.to = to
-    this.parent = parent
-  }
-
-  static from(token: Token, parent?: SyntaxNode): SyntaxNode {
-    return new SyntaxNode(TokenType[token.type] as NodeType, token.from, token.to, parent ?? null)
-  }
-
-  get type(): {
-    type: NodeType
-    name: NodeType
-    isError: boolean
-    is: (other: NodeType) => boolean
-  } {
-    return {
-      type: this.#type,
-      name: this.#type,
-      isError: this.#isError,
-      is: (other: NodeType) => other === this.#type,
-    }
-  }
-
-  set type(name: NodeType) {
-    this.#type = name
-  }
-
-  get name(): string {
-    return this.type.name
-  }
-
-  get isError(): boolean {
-    return this.#isError
-  }
-
-  set isError(err: boolean) {
-    this.#isError = err
-  }
-
-  get firstChild(): SyntaxNode | null {
-    return this.children[0] ?? null
-  }
-
-  get lastChild(): SyntaxNode | null {
-    return this.children.at(-1) ?? null
-  }
-
-  get nextSibling(): SyntaxNode | null {
-    if (!this.parent) return null
-    const siblings = this.parent.children
-    const index = siblings.indexOf(this)
-    return index >= 0 && index < siblings.length - 1 ? siblings[index + 1]! : null
-  }
-
-  get prevSibling(): SyntaxNode | null {
-    if (!this.parent) return null
-    const siblings = this.parent.children
-    const index = siblings.indexOf(this)
-    return index > 0 ? siblings[index - 1]! : null
-  }
-
-  add(node: SyntaxNode) {
-    node.parent = this
-    this.children.push(node)
-  }
-
-  push(...nodes: SyntaxNode[]): SyntaxNode {
-    nodes.forEach((child) => (child.parent = this))
-    this.children.push(...nodes)
-    return this
-  }
-
-  toString(): string {
-    return this.type.name
-  }
-}
-
-// Operator precedence (binding power) - higher = tighter binding
-export const precedence: Record<string, number> = {
-  // Logical
-  or: 10,
-  and: 20,
-
-  // Comparison
-  '==': 30,
-  '!=': 30,
-  '<': 30,
-  '>': 30,
-  '<=': 30,
-  '>=': 30,
-
-  // Nullish coalescing
-  '??': 35,
-
-  // Bitwise shifts (lower precedence than addition)
-  '<<': 37,
-  '>>': 37,
-  '>>>': 37,
-
-  // Addition/Subtraction
-  '+': 40,
-  '-': 40,
-
-  // Bitwise AND/OR/XOR (higher precedence than addition)
-  band: 45,
-  bor: 45,
-  bxor: 45,
-
-  // Multiplication/Division/Modulo
-  '*': 50,
-  '/': 50,
-  '%': 50,
-
-  // Exponentiation (right-associative)
-  '**': 60,
-}
-
-export const conditionals = new Set(['==', '!=', '<', '>', '<=', '>=', '??', 'and', 'or'])
-
-export const compounds = ['??=', '+=', '-=', '*=', '/=', '%=']

src/parser/operatorTokenizer.ts

@@ -0,0 +1,89 @@
+import { ExternalTokenizer, InputStream } from '@lezer/lr'
+import * as terms from './shrimp.terms'
+
+type Operator = { str: string; tokenName: keyof typeof terms }
+const operators: Array<Operator> = [
+  { str: 'and', tokenName: 'And' },
+  { str: 'or', tokenName: 'Or' },
+  { str: '>=', tokenName: 'Gte' },
+  { str: '<=', tokenName: 'Lte' },
+  { str: '!=', tokenName: 'Neq' },
+  { str: '==', tokenName: 'EqEq' },
+
+  // Compound assignment operators (must come before single-char operators)
+  { str: '+=', tokenName: 'PlusEq' },
+  { str: '-=', tokenName: 'MinusEq' },
+  { str: '*=', tokenName: 'StarEq' },
+  { str: '/=', tokenName: 'SlashEq' },
+  { str: '%=', tokenName: 'ModuloEq' },
+
+  // Single-char operators
+  { str: '*', tokenName: 'Star' },
+  { str: '=', tokenName: 'Eq' },
+  { str: '/', tokenName: 'Slash' },
+  { str: '+', tokenName: 'Plus' },
+  { str: '-', tokenName: 'Minus' },
+  { str: '>', tokenName: 'Gt' },
+  { str: '<', tokenName: 'Lt' },
+  { str: '%', tokenName: 'Modulo' },
+]
+
+export const operatorTokenizer = new ExternalTokenizer((input: InputStream) => {
+  for (let operator of operators) {
+    if (!matchesString(input, 0, operator.str)) continue
+    const afterOpPos = operator.str.length
+    const charAfterOp = input.peek(afterOpPos)
+    if (!isWhitespace(charAfterOp)) continue
+
+    // Accept the operator token
+    const token = terms[operator.tokenName]
+    if (token === undefined) {
+      throw new Error(`Unknown token name: ${operator.tokenName}`)
+    }
+
+    input.advance(afterOpPos)
+    input.acceptToken(token)
+
+    return
+  }
+})
+
+const isWhitespace = (ch: number): boolean => {
+  return matchesChar(ch, [' ', '\t', '\n'])
+}
+
+const matchesChar = (ch: number, chars: (string | number)[]): boolean => {
+  for (const c of chars) {
+    if (typeof c === 'number') {
+      if (ch === c) {
+        return true
+      }
+    } else if (ch === c.charCodeAt(0)) {
+      return true
+    }
+  }
+  return false
+}
+
+const matchesString = (input: InputStream, pos: number, str: string): boolean => {
+  for (let i = 0; i < str.length; i++) {
+    if (input.peek(pos + i) !== str.charCodeAt(i)) {
+      return false
+    }
+  }
+  return true
+}
+
+const peek = (numChars: number, input: InputStream): string => {
+  let result = ''
+  for (let i = 0; i < numChars; i++) {
+    const ch = input.peek(i)
+    if (ch === -1) {
+      result += 'EOF'
+      break
+    } else {
+      result += String.fromCharCode(ch)
+    }
+  }
+  return result
+}

src/parser/parser2.ts

@@ -1,968 +0,0 @@
-import { CompilerError } from '#compiler/compilerError'
-import { Scanner, type Token, TokenType } from './tokenizer2'
-import { SyntaxNode, operators, precedence, conditionals, compounds } from './node'
-import { parseString } from './stringParser'
-
-const $T = TokenType
-
-// tell the dotGet searcher about builtin globals
-export const globals: string[] = []
-export const setGlobals = (newGlobals: string[] | Record<string, any>) => {
-  globals.length = 0
-  globals.push(...(Array.isArray(newGlobals) ? newGlobals : Object.keys(newGlobals)))
-}
-
-export const parse = (input: string): SyntaxNode => {
-  const parser = new Parser()
-  return parser.parse(input)
-}
-
-class Scope {
-  parent?: Scope
-  set = new Set<string>()
-
-  constructor(parent?: Scope) {
-    this.parent = parent
-
-    // no parent means this is global scope
-    if (!parent) for (const name of globals) this.add(name)
-  }
-
-  add(key: string) {
-    this.set.add(key)
-  }
-
-  has(key: string): boolean {
-    return this.set.has(key) || this.parent?.has(key) || false
-  }
-}
-
-export class Parser {
-  tokens: Token[] = []
-  pos = 0
-  inParens = 0
-  input = ''
-  scope = new Scope()
-  inTestExpr = false
-
-  parse(input: string): SyntaxNode {
-    const scanner = new Scanner()
-    this.tokens = scanner.tokenize(input)
-    this.pos = 0
-    this.input = input
-    this.scope = new Scope()
-    this.inTestExpr = false
-
-    const node = new SyntaxNode('Program', 0, input.length)
-
-    while (!this.isEOF()) {
-      if (this.is($T.Newline) || this.is($T.Semicolon)) {
-        this.next()
-        continue
-      }
-
-      const prevPos = this.pos
-      const stmt = this.statement()
-      if (stmt) node.add(stmt)
-
-      if (this.pos === prevPos && !this.isEOF())
-        throw `parser didn't advance - you need to call next()\n\n       ${this.input}\n`
-    }
-
-    return node
-  }
-
-  //
-  // parse foundation nodes - statements, expressions
-  //
-
-  // statement is a line of code
-  statement(): SyntaxNode | null {
-    if (this.is($T.Comment)) return this.comment()
-
-    while (this.is($T.Newline) || this.is($T.Semicolon)) this.next()
-
-    if (this.isEOF() || this.isExprEndKeyword()) return null
-
-    return this.expression()
-  }
-
-  // expressions can be found in four places:
-  // 1. line of code
-  // 2. right side of assignment
-  // 3. if/while conditions
-  // 4. inside (parens)
-  expression(allowPipe = true): SyntaxNode {
-    let expr
-
-    // x = value
-    if (
-      this.is($T.Identifier) &&
-      (this.nextIs($T.Operator, '=') || compounds.some((x) => this.nextIs($T.Operator, x)))
-    )
-      expr = this.assign()
-    // if, while, do, etc
-    else if (this.is($T.Keyword)) expr = this.keywords()
-    // dotget
-    else if (this.nextIs($T.Operator, '.')) expr = this.dotGetFunctionCall()
-    // echo hello world
-    else if (this.is($T.Identifier) && !this.nextIs($T.Operator) && !this.nextIsExprEnd())
-      expr = this.functionCall()
-    // bare-function-call
-    else if (this.is($T.Identifier) && this.nextIsExprEnd()) expr = this.functionCallOrIdentifier()
-    // everything else
-    else expr = this.exprWithPrecedence()
-
-    // check for destructuring
-    if (expr.type.is('Array') && this.is($T.Operator, '=')) return this.destructure(expr)
-
-    // check for parens function call
-    // ex: (ref my-func) my-arg
-    if (expr.type.is('ParenExpr') && !this.isExprEnd()) expr = this.functionCall(expr)
-
-    // if dotget is followed by binary operator, continue parsing as binary expression
-    if (expr.type.is('DotGet') && this.is($T.Operator) && !this.is($T.Operator, '|'))
-      expr = this.dotGetBinOp(expr)
-
-    // one | echo
-    if (allowPipe && this.isPipe()) return this.pipe(expr)
-    // regular
-    else return expr
-  }
-
-  // piping | stuff | is | cool
-  pipe(left: SyntaxNode): SyntaxNode {
-    const canLookPastNewlines = this.inParens === 0
-    const parts: SyntaxNode[] = [left]
-
-    while (this.isPipe()) {
-      // consume newlines before pipe (only if not in parens)
-      if (canLookPastNewlines) {
-        while (this.is($T.Newline)) this.next()
-      }
-
-      const pipeOp = this.op('|')
-      pipeOp.type = 'operator'
-      parts.push(pipeOp)
-
-      // consume newlines after pipe (only if not in parens)
-      if (canLookPastNewlines) {
-        while (this.is($T.Newline)) this.next()
-      }
-
-      // parse right side - don't allow nested pipes
-      parts.push(this.expression(false))
-    }
-
-    const node = new SyntaxNode('PipeExpr', parts[0]!.from, parts.at(-1)!.to)
-    return node.push(...parts)
-  }
-
-  // Pratt parser - parses expressions with precedence climbing
-  // bp = binding precedence
-  exprWithPrecedence(minBp = 0): SyntaxNode {
-    let left = this.value()
-
-    // infix operators with precedence
-    while (this.is($T.Operator)) {
-      const op = this.current().value!
-      const bp = precedence[op]
-
-      // operator has lower precedence than required, stop
-      if (bp === undefined || bp < minBp) break
-
-      const opNode = this.op()
-
-      // right-associative operators (like **) use same bp, others use bp + 1
-      const nextMinBp = op === '**' ? bp : bp + 1
-
-      // parse right-hand side with higher precedence
-      const right = this.exprWithPrecedence(nextMinBp)
-
-      const nodeType = conditionals.has(op) ? 'ConditionalOp' : 'BinOp'
-      const node = new SyntaxNode(nodeType, left.from, right.to)
-
-      node.push(left, opNode, right)
-      left = node
-    }
-
-    return left
-  }
-
-  // if, while, do, etc
-  keywords(): SyntaxNode {
-    if (this.is($T.Keyword, 'if')) return this.if()
-
-    if (this.is($T.Keyword, 'while')) return this.while()
-
-    if (this.is($T.Keyword, 'do')) return this.do()
-
-    if (this.is($T.Keyword, 'try')) return this.try()
-
-    if (this.is($T.Keyword, 'throw')) return this.throw()
-
-    if (this.is($T.Keyword, 'not')) return this.not()
-
-    if (this.is($T.Keyword, 'import')) return this.import()
-
-    return this.expect($T.Keyword, 'if/while/do/import') as never
-  }
-
-  // value can be an atom or a (parens that gets turned into an atom)
-  // values are used in a few places:
-  // 1. function arguments
-  // 2. array/dict members
-  // 3. binary operations
-  // 4. anywhere an expression can be used
-  value(): SyntaxNode {
-    if (this.is($T.OpenParen)) return this.parens()
-
-    if (this.is($T.OpenBracket)) return this.arrayOrDict()
-
-    // dotget
-    if (this.nextIs($T.Operator, '.')) return this.dotGet()
-
-    return this.atom()
-  }
-
-  //
-  // parse specific nodes
-  //
-
-  // raw determines whether we just want the SyntaxNodes or we want to
-  // wrap them in a PositionalArg
-  arg(raw = false): SyntaxNode {
-    // 'do' is a special function arg - it doesn't need to be wrapped
-    // in parens. otherwise, args are regular value()s
-    const val = this.is($T.Keyword, 'do') ? this.do() : this.value()
-
-    if (raw) {
-      return val
-    } else {
-      const arg = new SyntaxNode('PositionalArg', val.from, val.to)
-      if (val.isError) arg.isError = true
-      arg.add(val)
-      return arg
-    }
-  }
-
-  // [ 1 2 3 ]
-  array(): SyntaxNode {
-    const open = this.expect($T.OpenBracket)
-
-    const values = []
-    while (!this.is($T.CloseBracket) && !this.isEOF()) {
-      if (this.is($T.Semicolon) || this.is($T.Newline)) {
-        this.next()
-        continue
-      }
-
-      if (this.is($T.Comment)) {
-        values.push(this.comment())
-        continue
-      }
-
-      values.push(this.value())
-    }
-
-    const close = this.expect($T.CloseBracket)
-
-    const node = new SyntaxNode('Array', open.from, close.to)
-    return node.push(...values)
-  }
-
-  // which are we dealing with? ignores leading newlines and comments
-  arrayOrDict(): SyntaxNode {
-    let peek = 1
-    let curr = this.peek(peek++)
-    let isDict = false
-
-    while (curr && curr.type !== $T.CloseBracket) {
-      // definitely a dict
-      if (curr.type === $T.NamedArgPrefix) {
-        isDict = true
-        break
-      }
-
-      // empty dict
-      if (curr.type === $T.Operator && curr.value === '=') {
-        isDict = true
-        break
-      }
-
-      // [ a = true ]
-      const next = this.peek(peek)
-      if (next?.type === $T.Operator && next.value === '=') {
-        isDict = true
-        break
-      }
-
-      // probably an array
-      if (curr.type !== $T.Comment && curr.type !== $T.Semicolon && curr.type !== $T.Newline) break
-
-      curr = this.peek(peek++)
-    }
-
-    return isDict ? this.dict() : this.array()
-  }
-
-  // x = true
-  assign(): SyntaxNode {
-    const ident = this.assignableIdentifier()
-    const opToken = this.current()!
-    const op = this.op()
-    const expr = this.expression()
-
-    const node = new SyntaxNode(
-      opToken.value === '=' ? 'Assign' : 'CompoundAssign',
-      ident.from,
-      expr.to,
-    )
-
-    return node.push(ident, op, expr)
-  }
-
-  // identifier used in assignment (TODO: legacy lezer quirk)
-  assignableIdentifier(): SyntaxNode {
-    const token = this.expect($T.Identifier)
-    this.scope.add(token.value!)
-    const node = SyntaxNode.from(token)
-    node.type = 'AssignableIdentifier'
-    return node
-  }
-
-  // atoms are the basic building blocks: literals, identifiers, words
-  atom(): SyntaxNode {
-    if (this.is($T.String)) return this.string()
-
-    if (this.isAny($T.Null, $T.Boolean, $T.Number, $T.Identifier, $T.Word, $T.Regex, $T.Underscore))
-      return SyntaxNode.from(this.next())
-
-    const next = this.next()
-    throw new CompilerError(`Unexpected token: ${TokenType[next.type]}`, next.from, next.to)
-  }
-
-  // blocks in if, do, special calls, etc
-  // `: something end`
-  //
-  // `blockNode` determines whether we return [colon, BlockNode, end] or
-  // just a list of statements like [colon, stmt1, stmt2, end]
-  block(blockNode = true): SyntaxNode[] {
-    const stmts: SyntaxNode[] = []
-    const colon = this.colon()
-
-    while (!this.isExprEndKeyword() && !this.isEOF()) {
-      const stmt = this.statement()
-      if (stmt) stmts.push(stmt)
-    }
-
-    const out = [colon]
-
-    if (blockNode) {
-      const block = new SyntaxNode('Block', stmts[0]!.from, stmts.at(-1)!.to)
-      block.push(...stmts)
-      out.push(block)
-    } else {
-      out.push(...stmts)
-    }
-
-    return out
-  }
-
-  // catch err: block
-  catch(): SyntaxNode {
-    const keyword = this.keyword('catch')
-
-    let catchVar
-    if (this.is($T.Identifier)) catchVar = this.identifier()
-
-    const block = this.block()
-
-    const node = new SyntaxNode('CatchExpr', keyword.from, block.at(-1)!.to)
-
-    node.push(keyword)
-    if (catchVar) node.push(catchVar)
-    return node.push(...block)
-  }
-
-  // colon
-  colon(): SyntaxNode {
-    const colon = SyntaxNode.from(this.expect($T.Colon))
-    colon.type = 'colon' // TODO lezer legacy
-    return colon
-  }
-
-  // # comment
-  comment(): SyntaxNode {
-    return SyntaxNode.from(this.expect($T.Comment))
-  }
-
-  // [ a b c ] = [ 1 2 3 ]
-  destructure(array: SyntaxNode): SyntaxNode {
-    const eq = this.op('=')
-    const val = this.expression()
-
-    for (const ident of array.children) {
-      const varName = this.input.slice(ident.from, ident.to)
-      this.scope.add(varName)
-    }
-
-    const node = new SyntaxNode('Assign', array.from, val.to)
-    return node.push(array, eq, val)
-  }
-
-  // [ a=1 b=true c='three' ]
-  dict(): SyntaxNode {
-    const open = this.expect($T.OpenBracket)
-    let isError = false
-
-    // empty dict [=] or [ = ]
-    if (this.is($T.Operator, '=') && this.nextIs($T.CloseBracket)) {
-      const _op = this.next()
-      const close = this.next()
-      return new SyntaxNode('Dict', open.from, close.to)
-    }
-
-    const values = []
-    while (!this.is($T.CloseBracket) && !this.isEOF()) {
-      if (this.is($T.Semicolon) || this.is($T.Newline)) {
-        this.next()
-        continue
-      }
-
-      if (this.is($T.Comment)) {
-        values.push(this.comment())
-        continue
-      }
-
-      // check for named arg with space after it (vs connected)
-      if (this.nextIs($T.Operator, '=')) {
-        const ident = this.identifier()
-        const op = this.op('=')
-        const prefix = new SyntaxNode('NamedArgPrefix', ident.from, op.to)
-
-        if (this.is($T.CloseBracket) || this.is($T.Semicolon) || this.is($T.Newline)) {
-          const node = new SyntaxNode('NamedArg', ident.from, op.to)
-          node.isError = true
-          isError = true
-          values.push(node.push(prefix))
-        } else {
-          const val = this.arg(true)
-          const node = new SyntaxNode('NamedArg', ident.from, val.to)
-          values.push(node.push(prefix, val))
-        }
-      } else {
-        const arg = this.is($T.NamedArgPrefix) ? this.namedArg() : this.arg()
-        if (arg.isError) isError = true
-        values.push(arg)
-      }
-    }
-
-    const close = this.expect($T.CloseBracket)
-
-    const node = new SyntaxNode('Dict', open.from, close.to)
-    node.isError = isError
-    return node.push(...values)
-  }
-
-  // FunctionDef `do x y: something end`
-  do(): SyntaxNode {
-    const doNode = this.keyword('do')
-    doNode.type = 'Do'
-    this.scope = new Scope(this.scope)
-
-    const params = []
-    while (!this.is($T.Colon) && !this.isExprEnd()) {
-      let varName = this.current().value!
-      if (varName.endsWith('=')) varName = varName.slice(0, varName.length - 1)
-      this.scope.add(varName)
-
-      let arg
-      if (this.is($T.Identifier)) arg = this.identifier()
-      else if (this.is($T.NamedArgPrefix)) arg = this.namedParam()
-      else
-        throw new CompilerError(
-          `Expected Identifier or NamedArgPrefix, got ${TokenType[this.current().type]}`,
-          this.current().from,
-          this.current().to,
-        )
-
-      params.push(arg)
-    }
-
-    const block = this.block(false)
-    let catchNode, finalNode
-
-    if (this.is($T.Keyword, 'catch')) catchNode = this.catch()
-
-    if (this.is($T.Keyword, 'finally')) finalNode = this.finally()
-
-    const end = this.keyword('end')
-
-    let last = block.at(-1)
-    if (finalNode) last = finalNode.children.at(-1)!
-    else if (catchNode) last = catchNode.children.at(-1)!
-
-    const node = new SyntaxNode('FunctionDef', doNode.from, last!.to)
-
-    node.add(doNode)
-
-    const paramsNode = new SyntaxNode('Params', params[0]?.from ?? 0, params.at(-1)?.to ?? 0)
-
-    if (params.length) paramsNode.push(...params)
-    node.add(paramsNode)
-
-    this.scope = this.scope.parent!
-
-    node.push(...block)
-
-    if (catchNode) node.push(catchNode)
-    if (finalNode) node.push(finalNode)
-
-    return node.push(end)
-  }
-
-  // config.path
-  dotGet(): SyntaxNode {
-    const left = this.identifier()
-    const ident = this.input.slice(left.from, left.to)
-
-    // not in scope, just return Word
-    if (!this.scope.has(ident)) return this.word(left)
-
-    if (left.type.is('Identifier')) left.type = 'IdentifierBeforeDot'
-
-    let parts = []
-    while (this.is($T.Operator, '.')) {
-      this.next()
-      parts.push(this.is($T.OpenParen) ? this.parens() : this.atom())
-    }
-
-    // TODO lezer legacy - we can do a flat DotGet if we remove this
-    const nodes = parts.length > 1 ? collapseDotGets(parts) : undefined
-
-    const node = new SyntaxNode('DotGet', left.from, parts.at(-1)!.to)
-    return nodes ? node.push(left, nodes!) : node.push(left, ...parts)
-  }
-
-  // continue parsing dotget/word binary operation
-  dotGetBinOp(left: SyntaxNode): SyntaxNode {
-    while (this.is($T.Operator) && !this.is($T.Operator, '|')) {
-      const op = this.current().value!
-      const bp = precedence[op]
-      if (bp === undefined) break
-
-      const opNode = this.op()
-      const right = this.exprWithPrecedence(bp + 1)
-
-      const nodeType = conditionals.has(op) ? 'ConditionalOp' : 'BinOp'
-      const node = new SyntaxNode(nodeType, left.from, right.to)
-      node.push(left, opNode, right)
-      left = node
-    }
-    return left
-  }
-
-  // dotget in a statement/expression (something.blah) or (something.blah arg1)
-  dotGetFunctionCall(): SyntaxNode {
-    const dotGet = this.dotGet()
-
-    // if followed by a binary operator (not pipe), return dotGet/Word as-is for expression parser
-    if (this.is($T.Operator) && !this.is($T.Operator, '|')) return dotGet
-
-    // dotget not in scope, regular Word
-    if (dotGet.type.is('Word')) return dotGet
-
-    if (this.isExprEnd()) return this.functionCallOrIdentifier(dotGet)
-    else return this.functionCall(dotGet)
-  }
-
-  // can be used in functions or try block
-  finally(): SyntaxNode {
-    const keyword = this.keyword('finally')
-    const block = this.block()
-    const node = new SyntaxNode('FinallyExpr', keyword.from, block.at(-1)!.to)
-
-    return node.push(keyword, ...block)
-  }
-
-  // you're lookin at it
-  functionCall(fn?: SyntaxNode): SyntaxNode {
-    const ident = fn ?? this.identifier()
-    let isError = false
-
-    const args: SyntaxNode[] = []
-    while (!this.isExprEnd()) {
-      const arg = this.is($T.NamedArgPrefix) ? this.namedArg() : this.arg()
-      if (arg.isError) isError = true
-      args.push(arg)
-    }
-
-    const node = new SyntaxNode('FunctionCall', ident.from, (args.at(-1) || ident).to)
-    node.push(ident, ...args)
-
-    if (isError) node.isError = true
-
-    if (!this.inTestExpr && this.is($T.Colon)) {
-      const block = this.block()
-      const end = this.keyword('end')
-      const blockNode = new SyntaxNode('FunctionCallWithBlock', node.from, end.to)
-      return blockNode.push(node, ...block, end)
-    }
-
-    return node
-  }
-
-  // bare identifier in an expression
-  functionCallOrIdentifier(inner?: SyntaxNode) {
-    if (!inner && this.nextIs($T.Operator, '.')) {
-      inner = this.dotGet()
-
-      // if the dotGet was just a Word, bail
-      if (inner.type.is('Word')) return inner
-    }
-
-    inner ??= this.identifier()
-
-    const wrapper = new SyntaxNode('FunctionCallOrIdentifier', inner.from, inner.to)
-    wrapper.push(inner)
-
-    if (!this.inTestExpr && this.is($T.Colon)) {
-      const block = this.block()
-      const end = this.keyword('end')
-      const node = new SyntaxNode('FunctionCallWithBlock', wrapper.from, end.to)
-      return node.push(wrapper, ...block, end)
-    }
-
-    return wrapper
-  }
-
-  // function and variable names
-  identifier(): SyntaxNode {
-    return SyntaxNode.from(this.expect($T.Identifier))
-  }
-
-  // if something: blah end
-  // if something: blah else: blah end
-  // if something: blah else if something: blah else: blah end
-  if(): SyntaxNode {
-    const ifNode = this.keyword('if')
-    const test = this.testExpr()
-    const ifBlock = this.block()
-
-    const node = new SyntaxNode('IfExpr', ifNode.from, ifBlock.at(-1)!.to)
-    node.push(ifNode, test)
-    node.push(...ifBlock)
-
-    while (this.is($T.Keyword, 'else') && this.nextIs($T.Keyword, 'if')) {
-      const elseWord = this.keyword('else')
-      const ifWord = this.keyword('if')
-      const elseIfTest = this.testExpr()
-      const elseIfBlock = this.block()
-      const elseIfNode = new SyntaxNode('ElseIfExpr', elseWord.from, elseIfBlock.at(-1)!.to)
-      elseIfNode.push(elseWord, ifWord, elseIfTest)
-      elseIfNode.push(...elseIfBlock)
-      node.push(elseIfNode)
-    }
-
-    if (this.is($T.Keyword, 'else') && this.nextIs($T.Colon)) {
-      const elseWord = this.keyword('else')
-      const elseBlock = this.block()
-      const elseNode = new SyntaxNode('ElseExpr', elseWord.from, elseBlock.at(-1)!.to)
-      elseNode.push(elseWord)
-      elseNode.push(...elseBlock)
-      node.push(elseNode)
-    }
-
-    return node.push(this.keyword('end'))
-  }
-
-  import(): SyntaxNode {
-    const keyword = this.keyword('import')
-
-    const args: SyntaxNode[] = []
-    while (!this.isExprEnd()) {
-      if (this.is($T.NamedArgPrefix)) {
-        const prefix = SyntaxNode.from(this.next())
-        const val = this.value()
-        const arg = new SyntaxNode('NamedArg', prefix.from, val.to)
-        arg.push(prefix, val)
-        args.push(arg)
-      } else {
-        args.push(this.identifier())
-      }
-    }
-
-    const node = new SyntaxNode('Import', keyword.from, args.at(-1)!.to)
-    node.add(keyword)
-    return node.push(...args)
-  }
-
-  // if, while, do, etc
-  keyword(name: string): SyntaxNode {
-    const node = SyntaxNode.from(this.expect($T.Keyword, name))
-    node.type = 'keyword' // TODO lezer legacy
-    return node
-  }
-
-  // abc= true
-  namedArg(): SyntaxNode {
-    const prefix = SyntaxNode.from(this.expect($T.NamedArgPrefix))
-
-    if (this.isExprEnd()) {
-      const node = new SyntaxNode('NamedArg', prefix.from, prefix.to)
-      node.isError = true
-      return node.push(prefix)
-    }
-
-    const val = this.arg(true)
-    const node = new SyntaxNode('NamedArg', prefix.from, val.to)
-    return node.push(prefix, val)
-  }
-
-  // abc= null|true|123|'hi'
-  namedParam(): SyntaxNode {
-    const prefix = SyntaxNode.from(this.expect($T.NamedArgPrefix))
-    const val = this.value()
-
-    if (!['Null', 'Boolean', 'Number', 'String'].includes(val.type.name))
-      throw new CompilerError(
-        `Default value must be null, boolean, number, or string, got ${val.type.name}`,
-        val.from,
-        val.to,
-      )
-
-    const node = new SyntaxNode('NamedParam', prefix.from, val.to)
-    return node.push(prefix, val)
-  }
-
-  // not blah
-  not(): SyntaxNode {
-    const keyword = this.keyword('not')
-    const val = this.expression()
-    const node = new SyntaxNode('Not', keyword.from, val.to)
-    return node.push(keyword, val)
-  }
-
-  // operators like + - =
-  op(op?: string): SyntaxNode {
-    const token = op ? this.expect($T.Operator, op) : this.expect($T.Operator)
-    const name = operators[token.value!]
-    if (!name)
-      throw new CompilerError(`Operator not registered: ${token.value!}`, token.from, token.to)
-    return new SyntaxNode(name, token.from, token.to)
-  }
-
-  // ( expressions in parens )
-  parens(): SyntaxNode {
-    this.inParens++
-    const open = this.expect($T.OpenParen)
-    const child = this.expression()
-    const close = this.expect($T.CloseParen)
-    this.inParens--
-
-    const node = new SyntaxNode('ParenExpr', open.from, close.to)
-    node.add(child)
-
-    return node
-  }
-
-  // 'hell yes' "hell no" { hell if i know }
-  string(): SyntaxNode {
-    const token = this.expect($T.String)
-    return parseString(this.input, token.from, token.to, this)
-  }
-
-  // if TEST: blah end
-  testExpr(): SyntaxNode {
-    this.inTestExpr = true
-    const expr = this.expression()
-    this.inTestExpr = false
-    return expr
-  }
-
-  // throw blah
-  throw(): SyntaxNode {
-    const keyword = this.keyword('throw')
-    const val = this.expression()
-    const node = new SyntaxNode('Throw', keyword.from, val.to)
-    return node.push(keyword, val)
-  }
-
-  // try: blah catch e: blah end
-  try(): SyntaxNode {
-    const tryNode = this.keyword('try')
-    const tryBlock = this.block()
-    let last = tryBlock.at(-1)
-    let catchNode, finalNode
-
-    if (this.is($T.Keyword, 'catch')) catchNode = this.catch()
-
-    if (this.is($T.Keyword, 'finally')) finalNode = this.finally()
-
-    const end = this.keyword('end')
-
-    if (finalNode) last = finalNode.children.at(-1)
-    else if (catchNode) last = catchNode.children.at(-1)
-
-    const node = new SyntaxNode('TryExpr', tryNode.from, last!.to)
-    node.push(tryNode, ...tryBlock)
-
-    if (catchNode) node.push(catchNode)
-
-    if (finalNode) node.push(finalNode)
-
-    return node.push(end)
-  }
-
-  // while test: blah end
-  while(): SyntaxNode {
-    const keyword = this.keyword('while')
-    const test = this.testExpr()
-    const block = this.block()
-    const end = this.keyword('end')
-
-    const node = new SyntaxNode('WhileExpr', keyword.from, end.to)
-    return node.push(keyword, test, ...block, end)
-  }
-
-  // readme.txt (when `readme` isn't in scope)
-  word(start?: SyntaxNode): SyntaxNode {
-    const parts = [start ?? this.expect($T.Word)]
-
-    while (this.is($T.Operator, '.')) {
-      this.next()
-      if (this.isAny($T.Word, $T.Identifier, $T.Number)) parts.push(this.next())
-    }
-
-    return new SyntaxNode('Word', parts[0]!.from, parts.at(-1)!.to)
-  }
-
-  //
-  // helpers
-  //
-
-  current(): Token {
-    return this.tokens[this.pos] || { type: TokenType.Newline, from: 0, to: 0 }
-  }
-
-  peek(offset = 1): Token | undefined {
-    return this.tokens[this.pos + offset]
-  }
-
-  // look past newlines to check for a specific token
-  peekPastNewlines(type: TokenType, value?: string): boolean {
-    let offset = 1
-    let peek = this.peek(offset)
-
-    while (peek && peek.type === $T.Newline) peek = this.peek(++offset)
-
-    if (!peek || peek.type !== type) return false
-    if (value !== undefined && peek.value !== value) return false
-    return true
-  }
-
-  next(): Token {
-    const token = this.current()
-    this.pos++
-    return token
-  }
-
-  is(type: TokenType, value?: string): boolean {
-    const token = this.current()
-    if (!token || token.type !== type) return false
-    if (value !== undefined && token.value !== value) return false
-    return true
-  }
-
-  isAny(...type: TokenType[]): boolean {
-    return type.some((x) => this.is(x))
-  }
-
-  nextIs(type: TokenType, value?: string): boolean {
-    const token = this.peek()
-    if (!token || token.type !== type) return false
-    if (value !== undefined && token.value !== value) return false
-    return true
-  }
-
-  nextIsAny(...type: TokenType[]): boolean {
-    return type.some((x) => this.nextIs(x))
-  }
-
-  isExprEnd(): boolean {
-    return (
-      this.isAny($T.Colon, $T.Semicolon, $T.Newline, $T.CloseParen, $T.CloseBracket) ||
-      this.is($T.Operator, '|') ||
-      this.isExprEndKeyword() ||
-      !this.current()
-    )
-  }
-
-  nextIsExprEnd(): boolean {
-    // pipes act like expression end for function arg parsing
-    if (this.nextIs($T.Operator, '|')) return true
-
-    return (
-      this.nextIsAny($T.Colon, $T.Semicolon, $T.Newline, $T.CloseBracket, $T.CloseParen) ||
-      this.nextIs($T.Keyword, 'end') ||
-      this.nextIs($T.Keyword, 'else') ||
-      this.nextIs($T.Keyword, 'catch') ||
-      this.nextIs($T.Keyword, 'finally') ||
-      !this.peek()
-    )
-  }
-
-  isExprEndKeyword(): boolean {
-    return (
-      this.is($T.Keyword, 'end') ||
-      this.is($T.Keyword, 'else') ||
-      this.is($T.Keyword, 'catch') ||
-      this.is($T.Keyword, 'finally')
-    )
-  }
-
-  isPipe(): boolean {
-    // inside parens, only look for pipes on same line (don't look past newlines)
-    const canLookPastNewlines = this.inParens === 0
-
-    return (
-      this.is($T.Operator, '|') || (canLookPastNewlines && this.peekPastNewlines($T.Operator, '|'))
-    )
-  }
-
-  expect(type: TokenType, value?: string): Token | never {
-    if (!this.is(type, value)) {
-      const token = this.current()
-      throw new CompilerError(
-        `Expected ${TokenType[type]}${value ? ` "${value}"` : ''}, got ${TokenType[token?.type || 0]}${token?.value ? ` "${token.value}"` : ''} at position ${this.pos}`,
-        token.from,
-        token.to,
-      )
-    }
-    return this.next()
-  }
-
-  isEOF(): boolean {
-    return this.pos >= this.tokens.length
-  }
-}
-
-// TODO lezer legacy
-function collapseDotGets(origNodes: SyntaxNode[]): SyntaxNode {
-  const nodes = [...origNodes]
-  let right = nodes.pop()!
-
-  while (nodes.length > 0) {
-    const left = nodes.pop()!
-
-    if (left.type.is('Identifier')) left.type = 'IdentifierBeforeDot'
-
-    const dot = new SyntaxNode('DotGet', left.from, right.to)
-    dot.push(left, right)
-
-    right = dot
-  }
-
-  return right
-}

src/parser/parserScopeContext.ts

@@ -0,0 +1,129 @@
+import { ContextTracker, InputStream } from '@lezer/lr'
+import * as terms from './shrimp.terms'
+
+export class Scope {
+  constructor(public parent: Scope | null, public vars = new Set<string>()) { }
+
+  has(name: string): boolean {
+    return this.vars.has(name) || (this.parent?.has(name) ?? false)
+  }
+
+  hash(): number {
+    let h = 0
+    for (const name of this.vars) {
+      for (let i = 0; i < name.length; i++) {
+        h = (h << 5) - h + name.charCodeAt(i)
+        h |= 0
+      }
+    }
+    if (this.parent) {
+      h = (h << 5) - h + this.parent.hash()
+      h |= 0
+    }
+    return h
+  }
+
+  // Static methods that return new Scopes (immutable operations)
+
+  static add(scope: Scope, ...names: string[]): Scope {
+    const newVars = new Set(scope.vars)
+    names.forEach((name) => newVars.add(name))
+    return new Scope(scope.parent, newVars)
+  }
+
+  push(): Scope {
+    return new Scope(this, new Set())
+  }
+
+  pop(): Scope {
+    return this.parent ?? this
+  }
+}
+
+// Tracker context that combines Scope with temporary pending identifiers
+class TrackerContext {
+  constructor(public scope: Scope, public pendingIds: string[] = []) { }
+}
+
+// Extract identifier text from input stream
+const readIdentifierText = (input: InputStream, start: number, end: number): string => {
+  let text = ''
+  for (let i = start; i < end; i++) {
+    const offset = i - input.pos
+    const ch = input.peek(offset)
+    if (ch === -1) break
+    text += String.fromCharCode(ch)
+  }
+  return text
+}
+
+let inParams = false
+
+export const trackScope = new ContextTracker<TrackerContext>({
+  start: new TrackerContext(new Scope(null, new Set())),
+
+  shift(context, term, stack, input) {
+    if (term == terms.Do) inParams = true
+
+    if (term === terms.AssignableIdentifier) {
+      const text = readIdentifierText(input, input.pos, stack.pos)
+      return new TrackerContext(Scope.add(context.scope, text), context.pendingIds)
+    }
+
+    if (inParams && term === terms.Identifier) {
+      const text = readIdentifierText(input, input.pos, stack.pos)
+      return new TrackerContext(context.scope, [...context.pendingIds, text])
+    }
+
+    // Track identifiers in array destructuring: [ a b ] = ...
+    if (!inParams && term === terms.Identifier && isArrayDestructuring(input)) {
+      const text = readIdentifierText(input, input.pos, stack.pos)
+      return new TrackerContext(Scope.add(context.scope, text), context.pendingIds)
+    }
+
+    return context
+  },
+
+  reduce(context, term) {
+    if (term === terms.Params) {
+      inParams = false
+      let newScope = context.scope.push()
+      if (context.pendingIds.length > 0) {
+        newScope = Scope.add(newScope, ...context.pendingIds)
+      }
+      return new TrackerContext(newScope, [])
+    }
+
+    // Pop scope when exiting function
+    if (term === terms.FunctionDef) {
+      return new TrackerContext(context.scope.pop(), [])
+    }
+
+    return context
+  },
+
+  hash: (context) => context.scope.hash(),
+})
+
+// Check if we're parsing array destructuring: [ a b ] = ...
+const isArrayDestructuring = (input: InputStream): boolean => {
+  let pos = 0
+
+  // Find closing bracket
+  while (pos < 200 && input.peek(pos) !== 93 /* ] */) {
+    if (input.peek(pos) === -1) return false // EOF
+    pos++
+  }
+
+  if (input.peek(pos) !== 93 /* ] */) return false
+  pos++
+
+  // Skip whitespace
+  while (input.peek(pos) === 32 /* space */ ||
+    input.peek(pos) === 9 /* tab */ ||
+    input.peek(pos) === 10 /* \n */) {
+    pos++
+  }
+
+  return input.peek(pos) === 61 /* = */
+}

src/parser/shrimp.grammar

@@ -0,0 +1,249 @@
+@external propSource highlighting from "./highlight"
+
+@context trackScope from "./parserScopeContext"
+
+@skip { space | Comment }
+
+@top Program { item* }
+
+@external tokens operatorTokenizer from "./operatorTokenizer" { Star, Slash, Plus, Minus, And, Or, Eq, EqEq, Neq, Lt, Lte, Gt, Gte, Modulo, PlusEq, MinusEq, StarEq, SlashEq, ModuloEq }
+
+@tokens {
+  @precedence { Number Regex }
+
+  StringFragment { !['\\$]+ }
+  NamedArgPrefix { $[a-z-]+ "=" }
+  Number { ("-" | "+")? $[0-9]+ ('.' $[0-9]+)? }
+  Boolean { "true" | "false" }
+  newlineOrSemicolon { "\n" | ";" }
+  eof { @eof }
+  space { " " | "\t" }
+  Comment { "#" " " ![\n]* }
+  leftParen { "(" }
+  rightParen { ")" }
+  colon[closedBy="end", @name="colon"] { ":" }
+  Underscore { "_" }
+  Regex { "//" (![/\\\n[] | "\\" ![\n] | "[" (![\n\\\]] | "\\" ![\n])* "]")+ ("//" $[gimsuy]*)? } // Stolen from the lezer JavaScript grammar
+  "|"[@name=operator]
+}
+
+end { @specialize[@name=keyword]<Identifier, "end"> }
+while { @specialize[@name=keyword]<Identifier, "while"> }
+if { @specialize[@name=keyword]<Identifier, "if"> }
+else { @specialize[@name=keyword]<Identifier, "else"> }
+try { @specialize[@name=keyword]<Identifier, "try"> }
+catch { @specialize[@name=keyword]<Identifier, "catch"> }
+finally { @specialize[@name=keyword]<Identifier, "finally"> }
+throw { @specialize[@name=keyword]<Identifier, "throw"> }
+null { @specialize[@name=Null]<Identifier, "null"> }
+
+@external tokens tokenizer from "./tokenizer" { Identifier, AssignableIdentifier, Word, IdentifierBeforeDot }
+@external specialize {Identifier} specializeKeyword from "./tokenizer" { Do }
+
+@precedence {
+  pipe @left,
+  or @left,
+  and @left,
+  comparison @left,
+  multiplicative @left,
+  additive @left,
+  call
+}
+
+item {
+  consumeToTerminator newlineOrSemicolon |
+  consumeToTerminator eof |
+  newlineOrSemicolon // allow blank lines
+}
+
+consumeToTerminator {
+  PipeExpr |
+  WhileExpr |
+  FunctionCallWithBlock |
+  ambiguousFunctionCall |
+  TryExpr |
+  Throw |
+  IfExpr |
+  FunctionDef |
+  CompoundAssign |
+  Assign |
+  BinOp |
+  ConditionalOp |
+  expressionWithoutIdentifier
+}
+
+PipeExpr {
+  pipeOperand (!pipe "|" pipeOperand)+
+}
+
+pipeOperand {
+  consumeToTerminator
+}
+
+WhileExpr {
+  while (ConditionalOp | expression) colon Block end
+}
+
+Block {
+  consumeToTerminator | newlineOrSemicolon block
+}
+
+FunctionCallWithBlock {
+  ambiguousFunctionCall colon Block CatchExpr? FinallyExpr? end
+}
+
+FunctionCallOrIdentifier {
+  DotGet | Identifier
+}
+
+ambiguousFunctionCall {
+  FunctionCall | FunctionCallOrIdentifier
+}
+
+FunctionCall {
+  (DotGet | Identifier | ParenExpr) arg+
+}
+
+arg {
+  PositionalArg | NamedArg
+}
+
+PositionalArg {
+  expression | FunctionDef | Underscore
+}
+
+NamedArg {
+  NamedArgPrefix (expression | FunctionDef | Underscore)
+}
+
+FunctionDef {
+  Do Params colon (consumeToTerminator | newlineOrSemicolon block) CatchExpr? FinallyExpr? end
+}
+
+ifTest {
+  ConditionalOp | expression | FunctionCall
+}
+
+IfExpr {
+  if ifTest colon Block ElseIfExpr* ElseExpr? end
+}
+
+ElseIfExpr {
+  else if ifTest colon Block
+}
+
+ElseExpr {
+  else colon Block
+}
+
+TryExpr {
+  try colon Block CatchExpr? FinallyExpr? end
+}
+
+CatchExpr {
+  catch Identifier colon Block
+}
+
+FinallyExpr {
+  finally colon Block
+}
+
+Throw {
+  throw (BinOp | ConditionalOp | expression)
+}
+
+ConditionalOp {
+  expression !comparison EqEq expression |
+  expression !comparison Neq expression |
+  expression !comparison Lt expression |
+  expression !comparison Lte expression |
+  expression !comparison Gt expression |
+  expression !comparison Gte expression |
+  (expression | ConditionalOp) !and And (expression | ConditionalOp) |
+  (expression | ConditionalOp) !or Or (expression | ConditionalOp)
+}
+
+Params {
+  Identifier* NamedParam*
+}
+
+NamedParam {
+  NamedArgPrefix (String | Number | Boolean | null)
+}
+
+Assign {
+  (AssignableIdentifier | Array) Eq consumeToTerminator
+}
+
+CompoundAssign {
+  AssignableIdentifier (PlusEq | MinusEq | StarEq | SlashEq | ModuloEq) consumeToTerminator
+}
+
+BinOp {
+  expression !multiplicative Modulo expression |
+  (expression | BinOp) !multiplicative Star (expression | BinOp) |
+  (expression | BinOp) !multiplicative Slash (expression | BinOp) |
+  (expression | BinOp) !additive Plus (expression | BinOp) |
+  (expression | BinOp) !additive Minus (expression | BinOp)
+}
+
+ParenExpr {
+  leftParen (IfExpr | ambiguousFunctionCall | BinOp | expressionWithoutIdentifier | ConditionalOp | PipeExpr | FunctionDef) rightParen
+}
+
+expression {
+  expressionWithoutIdentifier | DotGet | Identifier
+}
+
+
+@local tokens {
+  dot { "." }
+}
+
+@skip {} {
+  DotGet {
+    IdentifierBeforeDot dot (Number | Identifier | ParenExpr)
+  }
+
+  String { "'" stringContent* "'" }
+}
+
+stringContent {
+  StringFragment |
+  Interpolation |
+  EscapeSeq
+}
+
+Interpolation {
+  "$" Identifier |
+  "$" ParenExpr
+}
+
+EscapeSeq {
+  "\\" ("$" | "n" | "t" | "r" | "\\" | "'")
+}
+
+Dict {
+  "[=]" |
+  "[" newlineOrSemicolon* NamedArg (newlineOrSemicolon | NamedArg)* "]"
+}
+
+Array {
+  "[" newlineOrSemicolon* (expression (newlineOrSemicolon | expression)*)? "]"
+}
+
+// We need expressionWithoutIdentifier to avoid conflicts in consumeToTerminator.
+// Without this, when parsing "my-var" at statement level, the parser can't decide:
+//   - ambiguousFunctionCall → FunctionCallOrIdentifier → Identifier
+//   - expression → Identifier
+// Both want the same Identifier token! So we use expressionWithoutIdentifier
+// to remove Identifier from the second path, forcing standalone identifiers
+// to go through ambiguousFunctionCall (which is what we want semantically).
+// Yes, it is annoying and I gave up trying to use GLR to fix it.
+expressionWithoutIdentifier {
+  ParenExpr | Word | String | Number | Boolean | Regex | Dict | Array | null
+}
+
+block {
+  (consumeToTerminator? newlineOrSemicolon)*
+}

src/parser/shrimp.grammar.d.ts

@@ -0,0 +1,4 @@
+declare module '*.grammar' {
+  const content: string
+  export default content
+}

src/parser/shrimp.terms.ts

@@ -0,0 +1,66 @@
+// This file was generated by lezer-generator. You probably shouldn't edit it.
+export const
+  Star = 1,
+  Slash = 2,
+  Plus = 3,
+  Minus = 4,
+  And = 5,
+  Or = 6,
+  Eq = 7,
+  EqEq = 8,
+  Neq = 9,
+  Lt = 10,
+  Lte = 11,
+  Gt = 12,
+  Gte = 13,
+  Modulo = 14,
+  PlusEq = 15,
+  MinusEq = 16,
+  StarEq = 17,
+  SlashEq = 18,
+  ModuloEq = 19,
+  Identifier = 20,
+  AssignableIdentifier = 21,
+  Word = 22,
+  IdentifierBeforeDot = 23,
+  Do = 24,
+  Comment = 25,
+  Program = 26,
+  PipeExpr = 27,
+  WhileExpr = 29,
+  keyword = 70,
+  ConditionalOp = 31,
+  ParenExpr = 32,
+  IfExpr = 33,
+  FunctionCall = 35,
+  DotGet = 36,
+  Number = 37,
+  PositionalArg = 38,
+  FunctionDef = 39,
+  Params = 40,
+  NamedParam = 41,
+  NamedArgPrefix = 42,
+  String = 43,
+  StringFragment = 44,
+  Interpolation = 45,
+  EscapeSeq = 46,
+  Boolean = 47,
+  Null = 48,
+  colon = 49,
+  CatchExpr = 50,
+  Block = 52,
+  FinallyExpr = 53,
+  Underscore = 56,
+  NamedArg = 57,
+  ElseIfExpr = 58,
+  ElseExpr = 60,
+  FunctionCallOrIdentifier = 61,
+  BinOp = 62,
+  Regex = 63,
+  Dict = 64,
+  Array = 65,
+  FunctionCallWithBlock = 66,
+  TryExpr = 67,
+  Throw = 69,
+  CompoundAssign = 71,
+  Assign = 72

src/parser/shrimp.ts

@@ -0,0 +1,27 @@
+// This file was generated by lezer-generator. You probably shouldn't edit it.
+import {LRParser, LocalTokenGroup} from "@lezer/lr"
+import {operatorTokenizer} from "./operatorTokenizer"
+import {tokenizer, specializeKeyword} from "./tokenizer"
+import {trackScope} from "./parserScopeContext"
+import {highlighting} from "./highlight"
+const spec_Identifier = {__proto__:null,while:60, if:68, null:96, catch:102, finally:108, end:110, else:118, try:136, throw:140}
+export const parser = LRParser.deserialize({
+  version: 14,
+  states: "9UQYQbOOO!dOpO'#DQO!iOSO'#DXO$_QcO'#DkO&rQcO'#EYOOQ`'#Eh'#EhO'uQRO'#DlO)[QcO'#EWO)lQbO'#C|OOQa'#Dn'#DnO+nQbO'#DoOOQa'#EY'#EYO+uQcO'#EYO+|QcO'#EXO,yQcO'#EWO-TQRO'#DuOOQ`'#EW'#EWO-iQbO'#EWO-pQQO'#EVOOQ`'#EV'#EVOOQ`'#Dw'#DwQYQbOOO-{QbO'#DTO.WQbO'#C}O.{QbO'#CyO/pQQO'#DqO.{QbO'#DsO/uObO,59lO0QQbO'#DZO0YQWO'#D[OOOO'#E`'#E`OOOO'#D|'#D|O0nOSO,59sOOQa,59s,59sOOQ`'#DS'#DSO0|QbO'#DgOOQ`'#E^'#E^OOQ`'#Dy'#DyO1WQbO,59kOOQa'#EX'#EXO.{QbO,5:WO.{QbO,5:WO.{QbO,5:WO.{QbO,59gO.{QbO,59gO.{QbO,59gO2QQRO,59hO2^QQO,59hO2fQQO,59hO2qQRO,59hO3[QRO,59hO3jQQO'#CwOOQ`'#EP'#EPO3oQbO,5:ZO3vQQO,5:YOOQa,5:Z,5:ZO4RQbO,5:ZO)lQbO,5:bO)lQbO,5:aO4]QbO,5:[O4dQbO,59cOOQ`,5:q,5:qO)lQbO'#DxOOQ`-E7u-E7uOOQ`'#Dz'#DzO5OQbO'#DUO5ZQbO'#DVOOQO'#D{'#D{O5RQQO'#DUO5iQQO,59oO5nQcO'#EXO5uQRO'#E[O6lQRO'#E[OOQO'#E['#E[O6sQQO,59iO6xQRO,59eO7PQRO,59eO4]QbO,5:]O7[QcO,5:_O8dQcO,5:_O8tQcO,5:_OOQa1G/W1G/WOOOO,59u,59uOOOO,59v,59vOOOO-E7z-E7zOOQa1G/_1G/_OOQ`,5:R,5:ROOQ`-E7w-E7wOOQa1G/r1G/rO9sQcO1G/rO9}QcO1G/rO:XQcO1G/rOOQa1G/R1G/RO<TQcO1G/RO<[QcO1G/RO<cQcO1G/ROOQa1G/S1G/SOOQ`-E7}-E7}O<jQQO1G/tOOQa1G/u1G/uO<uQbO1G/uOOQO'#EQ'#EQO<jQQO1G/tOOQa1G/t1G/tOOQ`'#ER'#ERO<uQbO1G/uO=PQbO1G/|O=kQbO1G/{O>VQbO'#DbO>hQbO'#DbO>{QbO1G/vOOQ`-E7v-E7vOOQ`,5:d,5:dOOQ`-E7x-E7xO?WQQO,59pOOQO,59q,59qOOQO-E7y-E7yO?`QbO1G/ZO4]QbO1G/TO4]QbO1G/PO?gQbO1G/wO?rQQO7+%`OOQa7+%`7+%`O?}QbO7+%aOOQa7+%a7+%aOOQO-E8O-E8OOOQ`-E8P-E8POOQ`'#D}'#D}O@XQQO'#D}O@aQbO'#EgOOQ`,59|,59|O@tQbO'#D`O@yQQO'#DcOOQ`7+%b7+%bOAOQbO7+%bOATQbO7+%bOA]QbO7+$uOAkQbO7+$uOA{QbO7+$oOBTQbO7+$kOOQ`7+%c7+%cOBYQbO7+%cOB_QbO7+%cOOQa<<Hz<<HzOOQa<<H{<<H{OOQ`,5:i,5:iOOQ`-E7{-E7{OBgQQO,59zO4]QbO,59}OOQ`<<H|<<H|OBlQbO<<H|OOQ`<<Ha<<HaOBqQbO<<HaOBvQbO<<HaOCOQbO<<HaOOQ`'#EO'#EOOCZQbO<<HZOCcQbO'#DjOOQ`<<HZ<<HZOCkQbO<<HZOOQ`<<HV<<HVOOQ`<<H}<<H}OCpQbO<<H}O4]QbO1G/fOOQ`1G/i1G/iOOQ`AN>hAN>hOOQ`AN={AN={OCuQbOAN={OCzQbOAN={OOQ`-E7|-E7|OOQ`AN=uAN=uODSQbOAN=uO.WQbO,5:SO4]QbO,5:UOOQ`AN>iAN>iOOQ`7+%Q7+%QOOQ`G23gG23gODXQbOG23gPD^QbO'#DhOOQ`G23aG23aODcQQO1G/nOOQ`1G/p1G/pOOQ`LD)RLD)RO4]QbO7+%YOOQ`<<Ht<<Ht",
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+  context: trackScope,
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+  ],
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+  topRules: {"Program":[0,26]},
+  specialized: [{term: 20, get: (value: any, stack: any) => (specializeKeyword(value, stack) << 1), external: specializeKeyword},{term: 20, get: (value: keyof typeof spec_Identifier) => spec_Identifier[value] || -1}],
+  tokenPrec: 1634
+})

src/parser/stringParser.ts

@@ -1,275 +0,0 @@
-import { SyntaxNode } from './node'
-
-/**
- * Parse string contents into fragments, interpolations, and escape sequences.
- *
- * Input: full string including quotes, e.g. "'hello $name'"
- * Output: SyntaxNode tree with StringFragment, Interpolation, EscapeSeq children
- */
-export const parseString = (input: string, from: number, to: number, parser: any): SyntaxNode => {
-  const stringNode = new SyntaxNode('String', from, to)
-  const content = input.slice(from, to)
-
-  // Determine string type
-  const firstChar = content[0]
-
-  // Double-quoted strings: no interpolation or escapes
-  if (firstChar === '"') {
-    const fragment = new SyntaxNode('DoubleQuote', from, to)
-    stringNode.add(fragment)
-    return stringNode
-  }
-
-  // Curly strings: interpolation but no escapes
-  if (firstChar === '{') {
-    parseCurlyString(stringNode, input, from, to, parser)
-    return stringNode
-  }
-
-  // Single-quoted strings: interpolation and escapes
-  if (firstChar === "'") {
-    parseSingleQuoteString(stringNode, input, from, to, parser)
-    return stringNode
-  }
-
-  throw `Unknown string type starting with: ${firstChar}`
-}
-
-/**
- * Parse single-quoted string: 'hello $name\n'
- * Supports: interpolation ($var, $(expr)), escape sequences (\n, \$, etc)
- */
-const parseSingleQuoteString = (
-  stringNode: SyntaxNode,
-  input: string,
-  from: number,
-  to: number,
-  parser: any,
-) => {
-  let pos = from + 1 // Skip opening '
-  let fragmentStart = pos
-
-  while (pos < to - 1) {
-    // -1 to skip closing '
-    const char = input[pos]
-
-    // Escape sequence
-    if (char === '\\' && pos + 1 < to - 1) {
-      // Push accumulated fragment
-      if (pos > fragmentStart) {
-        const frag = new SyntaxNode('StringFragment', fragmentStart, pos)
-        stringNode.add(frag)
-      }
-
-      // Add escape sequence node
-      const escNode = new SyntaxNode('EscapeSeq', pos, pos + 2)
-      stringNode.add(escNode)
-
-      pos += 2
-      fragmentStart = pos
-      continue
-    }
-
-    // Interpolation
-    if (char === '$') {
-      // Push accumulated fragment
-      if (pos > fragmentStart) {
-        const frag = new SyntaxNode('StringFragment', fragmentStart, pos)
-        stringNode.add(frag)
-      }
-
-      pos++ // Skip $
-
-      // Parse interpolation content
-      if (input[pos] === '(') {
-        // Expression interpolation: $(expr)
-        const interpStart = pos - 1 // Include the $
-        const exprResult = parseInterpolationExpr(input, pos, parser)
-        const interpNode = new SyntaxNode('Interpolation', interpStart, exprResult.endPos)
-        interpNode.add(exprResult.node)
-        stringNode.add(interpNode)
-        pos = exprResult.endPos
-      } else {
-        // Variable interpolation: $name
-        const interpStart = pos - 1
-        const identEnd = findIdentifierEnd(input, pos, to - 1)
-        const identNode = new SyntaxNode('FunctionCallOrIdentifier', pos, identEnd)
-        const innerIdent = new SyntaxNode('Identifier', pos, identEnd)
-        identNode.add(innerIdent)
-
-        const interpNode = new SyntaxNode('Interpolation', interpStart, identEnd)
-        interpNode.add(identNode)
-        stringNode.add(interpNode)
-        pos = identEnd
-      }
-
-      fragmentStart = pos
-      continue
-    }
-
-    pos++
-  }
-
-  // Push final fragment
-  if (pos > fragmentStart && fragmentStart < to - 1) {
-    const frag = new SyntaxNode('StringFragment', fragmentStart, pos)
-    stringNode.add(frag)
-  }
-}
-
-/**
- * Parse curly string: { hello $name }
- * Supports: interpolation ($var, $(expr)), nested braces
- * Does NOT support: escape sequences (raw content)
- */
-const parseCurlyString = (
-  stringNode: SyntaxNode,
-  input: string,
-  from: number,
-  to: number,
-  parser: any,
-) => {
-  let pos = from + 1 // Skip opening {
-  let fragmentStart = from // Include the opening { in the fragment
-  let depth = 1
-
-  while (pos < to && depth > 0) {
-    const char = input[pos]
-
-    // Track brace nesting
-    if (char === '{') {
-      depth++
-      pos++
-      continue
-    }
-
-    if (char === '}') {
-      depth--
-      if (depth === 0) {
-        // Push final fragment including closing }
-        const frag = new SyntaxNode('CurlyString', fragmentStart, pos + 1)
-        stringNode.add(frag)
-        break
-      }
-      pos++
-      continue
-    }
-
-    // Interpolation
-    if (char === '$') {
-      // Push accumulated fragment
-      if (pos > fragmentStart) {
-        const frag = new SyntaxNode('CurlyString', fragmentStart, pos)
-        stringNode.add(frag)
-      }
-
-      pos++ // Skip $
-
-      // Parse interpolation content
-      if (input[pos] === '(') {
-        // Expression interpolation: $(expr)
-        const interpStart = pos - 1
-        const exprResult = parseInterpolationExpr(input, pos, parser)
-        const interpNode = new SyntaxNode('Interpolation', interpStart, exprResult.endPos)
-        interpNode.add(exprResult.node)
-        stringNode.add(interpNode)
-        pos = exprResult.endPos
-      } else {
-        // Variable interpolation: $name
-        const interpStart = pos - 1
-        const identEnd = findIdentifierEnd(input, pos, to)
-        const identNode = new SyntaxNode('FunctionCallOrIdentifier', pos, identEnd)
-        const innerIdent = new SyntaxNode('Identifier', pos, identEnd)
-        identNode.add(innerIdent)
-
-        const interpNode = new SyntaxNode('Interpolation', interpStart, identEnd)
-        interpNode.add(identNode)
-        stringNode.add(interpNode)
-        pos = identEnd
-      }
-
-      fragmentStart = pos
-      continue
-    }
-
-    pos++
-  }
-}
-
-/**
- * Parse a parenthesized expression interpolation: $(a + b)
- * Returns the parsed expression node and the position after the closing )
- * pos is position of the opening ( in the full input string
- */
-const parseInterpolationExpr = (
-  input: string,
-  pos: number,
-  parser: any,
-): { node: SyntaxNode; endPos: number } => {
-  // Find matching closing paren
-  let depth = 1
-  let start = pos
-  let end = pos + 1 // Start after opening (
-
-  while (end < input.length && depth > 0) {
-    if (input[end] === '(') depth++
-    if (input[end] === ')') {
-      depth--
-      if (depth === 0) break
-    }
-    end++
-  }
-
-  const exprContent = input.slice(start + 1, end) // Content between ( and )
-  const closeParen = end
-  end++ // Move past closing )
-
-  // Use the main parser to parse the expression
-  const exprNode = parser.parse(exprContent)
-
-  // Get the first real node (skip Program wrapper)
-  const innerNode = exprNode.firstChild || exprNode
-
-  // Adjust node positions: they're relative to exprContent, need to offset to full input
-  const offset = start + 1 // Position where exprContent starts in full input
-  adjustNodePositions(innerNode, offset)
-
-  // Wrap in ParenExpr - use positions in the full string
-  const parenNode = new SyntaxNode('ParenExpr', start, closeParen + 1)
-  parenNode.add(innerNode)
-
-  return { node: parenNode, endPos: end }
-}
-
-/**
- * Recursively adjust all node positions by adding an offset
- */
-const adjustNodePositions = (node: SyntaxNode, offset: number) => {
-  node.from += offset
-  node.to += offset
-
-  for (const child of node.children) {
-    adjustNodePositions(child, offset)
-  }
-}
-
-/**
- * Find the end position of an identifier starting at pos
- * Identifiers: lowercase letter or emoji, followed by letters/digits/dashes/emoji
- */
-const findIdentifierEnd = (input: string, pos: number, maxPos: number): number => {
-  let end = pos
-
-  while (end < maxPos) {
-    const char = input[end]!
-
-    // Stop at non-identifier characters
-    if (!/[a-z0-9\-?]/.test(char)) {
-      break
-    }
-
-    end++
-  }
-
-  return end
-}

src/parser/tests/basics.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('null', () => {
   test('parses null', () => {
     expect('null').toMatchTree(`Null null`)
@@ -366,138 +368,6 @@ describe('Parentheses', () => {
             PositionalArg
               Number 3`)
   })
-
-  test('function call with named args on multiple lines in parens', () => {
-    expect(`(tail
-      arg1=true
-      arg2=30
-    )`).toMatchTree(`
-      ParenExpr
-        FunctionCall
-          Identifier tail
-          NamedArg
-            NamedArgPrefix arg1=
-            Boolean true
-          NamedArg
-            NamedArgPrefix arg2=
-            Number 30
-          `)
-
-    expect(`(
-      tail
-        arg1=true
-        arg2=30
-    )`).toMatchTree(`
-      ParenExpr
-        FunctionCall
-          Identifier tail
-          NamedArg
-            NamedArgPrefix arg1=
-            Boolean true
-          NamedArg
-            NamedArgPrefix arg2=
-            Number 30
-          `)
-  })
-
-  test('binop with newlines in parens', () => {
-    expect(`(
-  1 + 2
-)`).toMatchTree(`
-      ParenExpr
-        BinOp
-          Number 1
-          Plus +
-          Number 2`)
-  })
-
-  test('comparison with newlines in parens', () => {
-    expect(`(
-  1 < 2
-)`).toMatchTree(`
-      ParenExpr
-        ConditionalOp
-          Number 1
-          Lt <
-          Number 2`)
-  })
-
-  test('function call with multiple identifiers on separate lines in parens', () => {
-    expect(`(echo
-  arg1
-  arg2
-  arg3
-)`).toMatchTree(`
-    ParenExpr
-      FunctionCall
-        Identifier echo
-        PositionalArg
-          Identifier arg1
-        PositionalArg
-          Identifier arg2
-        PositionalArg
-          Identifier arg3`)
-  })
-
-  test('function call with mulitline identifiers starting separate lines in parens', () => {
-    expect(`(
-
-      echo
-        arg1
-        arg2
-        arg3
-
-    )`).toMatchTree(`
-    ParenExpr
-      FunctionCall
-        Identifier echo
-        PositionalArg
-          Identifier arg1
-        PositionalArg
-          Identifier arg2
-        PositionalArg
-          Identifier arg3`)
-  })
-})
-
-describe('Number literals', () => {
-  test('allows underscores in integer literals', () => {
-    expect('10_000').toMatchTree(`Number 10_000`)
-    expect('1_000_000').toMatchTree(`Number 1_000_000`)
-    expect('100_000').toMatchTree(`Number 100_000`)
-  })
-
-  test('allows underscores in decimal literals', () => {
-    expect('3.14_159').toMatchTree(`Number 3.14_159`)
-    expect('1_000.50').toMatchTree(`Number 1_000.50`)
-    expect('0.000_001').toMatchTree(`Number 0.000_001`)
-  })
-
-  test('allows underscores in negative numbers', () => {
-    expect('-10_000').toMatchTree(`Number -10_000`)
-    expect('-3.14_159').toMatchTree(`Number -3.14_159`)
-  })
-
-  test('allows underscores in positive numbers with explicit sign', () => {
-    expect('+10_000').toMatchTree(`Number +10_000`)
-    expect('+3.14_159').toMatchTree(`Number +3.14_159`)
-  })
-
-  test('works in expressions', () => {
-    expect('1_000 + 2_000').toMatchTree(`
-      BinOp
-        Number 1_000
-        Plus +
-        Number 2_000`)
-  })
-
-  test('works in function calls', () => {
-    expect('echo 10_000').toMatchTree(`
-      FunctionCall
-        Identifier echo
-        PositionalArg
-          Number 10_000`)
-  })
 })
 
 describe('BinOp', () => {
@@ -725,86 +595,43 @@ describe('CompoundAssign', () => {
           PositionalArg
             Number 3`)
   })
-
-  test('parses ??= operator', () => {
-    expect('x ??= 5').toMatchTree(`
-      CompoundAssign
-        AssignableIdentifier x
-        NullishEq ??=
-        Number 5`)
-  })
-
-  test('parses ??= with expression', () => {
-    expect('config ??= get-default').toMatchTree(`
-      CompoundAssign
-        AssignableIdentifier config
-        NullishEq ??=
-        FunctionCallOrIdentifier
-          Identifier get-default`)
-  })
 })
 
-describe('Nullish coalescing operator', () => {
+describe('DotGet whitespace sensitivity', () => {
-  test('? can still end an identifier', () => {
+  test('no whitespace - DotGet works when identifier in scope', () => {
-    expect('what?').toMatchTree(`
+    expect('basename = 5; basename.prop').toMatchTree(`
+      Assign
+        AssignableIdentifier basename
+        Eq =
+        Number 5
       FunctionCallOrIdentifier
-        Identifier what?`)
+        DotGet
+          IdentifierBeforeDot basename
+          Identifier prop`)
   })
 
-  test('?? can still end an identifier', () => {
+  test('space before dot - NOT DotGet, parses as division', () => {
-    expect('what??').toMatchTree(`
+    expect('basename = 5; basename / prop').toMatchTree(`
-      FunctionCallOrIdentifier
+      Assign
-        Identifier what??`)
+        AssignableIdentifier basename
+        Eq =
+        Number 5
+      BinOp
+        Identifier basename
+        Slash /
+        Identifier prop`)
   })
 
-  test('?? can still be in a word', () => {
+  test('dot followed by slash is Word, not DotGet', () => {
-    expect('what??the').toMatchTree(`
+    expect('basename ./cool').toMatchTree(`
-      FunctionCallOrIdentifier
+      FunctionCall
-        Identifier what??the`)
+        Identifier basename
+        PositionalArg
+          Word ./cool`)
   })
 
-  test('?? can still start a word', () => {
+  test('identifier not in scope with dot becomes Word', () => {
-    expect('??what??the').toMatchTree(`
+    expect('readme.txt').toMatchTree(`Word readme.txt`)
-      Word ??what??the`)
-  })
-
-  test('parses ?? operator', () => {
-    expect('x ?? 5').toMatchTree(`
-      ConditionalOp
-        Identifier x
-        NullishCoalesce ??
-        Number 5`)
-  })
-
-  test('parses chained ?? operators', () => {
-    expect('a ?? b ?? c').toMatchTree(`
-      ConditionalOp
-        ConditionalOp
-          Identifier a
-          NullishCoalesce ??
-          Identifier b
-        NullishCoalesce ??
-        Identifier c`)
-  })
-
-  test('parses ?? with expressions', () => {
-    expect('get-value ?? default-value').toMatchTree(`
-      ConditionalOp
-        Identifier get-value
-        NullishCoalesce ??
-        Identifier default-value`)
-  })
-
-  test('parses ?? with parenthesized function call', () => {
-    expect('get-value ?? (default 10)').toMatchTree(`
-      ConditionalOp
-        Identifier get-value
-        NullishCoalesce ??
-        ParenExpr
-          FunctionCall
-            Identifier default
-            PositionalArg
-              Number 10`)
   })
 })
 
@@ -812,7 +639,7 @@ describe('Comments', () => {
   test('are greedy', () => {
     expect(`
 x = 5 # one banana
-y = 2 #two bananas`).toMatchTree(`
+y = 2 # two bananas`).toMatchTree(`
       Assign
         AssignableIdentifier x
         Eq =
@@ -822,7 +649,7 @@ y = 2 #two bananas`).toMatchTree(`
         AssignableIdentifier y
         Eq =
         Number 2
-      Comment #two bananas`)
+      Comment # two bananas`)
 
     expect(`
 # some comment
@@ -843,11 +670,11 @@ basename = 5 # very astute
   })
 
   test('words with # are not considered comments', () => {
-    expect('find my#hashtag-file.txt').toMatchTree(`
+    expect('find #hashtag-file.txt').toMatchTree(`
       FunctionCall
         Identifier find
         PositionalArg
-          Word my#hashtag-file.txt`)
+          Word #hashtag-file.txt`)
   })
 
   test('hastags in strings are not comments', () => {
@@ -857,6 +684,61 @@ basename = 5 # very astute
   })
 })
 
+describe('Array destructuring', () => {
+  test('parses array pattern with two variables', () => {
+    expect('[ a b ] = [ 1 2 3 4]').toMatchTree(`
+      Assign
+        Array
+          Identifier a
+          Identifier b
+        Eq =
+        Array
+          Number 1
+          Number 2
+          Number 3
+          Number 4`)
+  })
+
+  test('parses array pattern with one variable', () => {
+    expect('[ x ] = [ 42 ]').toMatchTree(`
+      Assign
+        Array
+          Identifier x
+        Eq =
+        Array
+          Number 42`)
+  })
+
+  test('parses array pattern with emoji identifiers', () => {
+    expect('[ 🚀 💎 ] = [ 1 2 ]').toMatchTree(`
+      Assign
+        Array
+          Identifier 🚀
+          Identifier 💎
+        Eq =
+        Array
+          Number 1
+          Number 2`)
+  })
+
+  test('works with dotget', () => {
+    expect('[ a ] = [ [1 2 3] ]; a.1').toMatchTree(`
+      Assign
+        Array
+          Identifier a
+        Eq =
+        Array
+          Array
+            Number 1
+            Number 2
+            Number 3
+      FunctionCallOrIdentifier
+        DotGet
+          IdentifierBeforeDot a
+          Number 1`)
+  })
+})
+
 describe('Conditional ops', () => {
   test('or can be chained', () => {
     expect(`

src/parser/tests/bitwise.test.ts

@@ -1,70 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('bitwise operators - grammar', () => {
-  test('parses band (bitwise AND)', () => {
-    expect('5 band 3').toMatchTree(`
-      BinOp
-        Number 5
-        Band band
-        Number 3`)
-  })
-
-  test('parses bor (bitwise OR)', () => {
-    expect('5 bor 3').toMatchTree(`
-      BinOp
-        Number 5
-        Bor bor
-        Number 3`)
-  })
-
-  test('parses bxor (bitwise XOR)', () => {
-    expect('5 bxor 3').toMatchTree(`
-      BinOp
-        Number 5
-        Bxor bxor
-        Number 3`)
-  })
-
-  test('parses << (left shift)', () => {
-    expect('5 << 2').toMatchTree(`
-      BinOp
-        Number 5
-        Shl <<
-        Number 2`)
-  })
-
-  test('parses >> (signed right shift)', () => {
-    expect('20 >> 2').toMatchTree(`
-      BinOp
-        Number 20
-        Shr >>
-        Number 2`)
-  })
-
-  test('parses >>> (unsigned right shift)', () => {
-    expect('-1 >>> 1').toMatchTree(`
-      BinOp
-        Number -1
-        Ushr >>>
-        Number 1`)
-  })
-
-  test('parses bnot (bitwise NOT) as function call', () => {
-    expect('bnot 5').toMatchTree(`
-      FunctionCall
-        Identifier bnot
-        PositionalArg
-          Number 5`)
-  })
-
-  test('bitwise operators work in expressions', () => {
-    expect('x = 5 band 3').toMatchTree(`
-      Assign
-        AssignableIdentifier x
-        Eq =
-        BinOp
-          Number 5
-          Band band
-          Number 3`)
-  })
-})

src/parser/tests/control-flow.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('if/else if/else', () => {
   test('parses single line if', () => {
     expect(`if y == 1: 'cool' end`).toMatchTree(`
@@ -22,8 +24,7 @@ describe('if/else if/else', () => {
         Eq =
         IfExpr
           keyword if
-          FunctionCallOrIdentifier
+          Identifier x
-            Identifier x
           colon :
           Block
             Number 2
@@ -58,8 +59,7 @@ describe('if/else if/else', () => {
     end`).toMatchTree(`
       IfExpr
         keyword if
-        FunctionCallOrIdentifier
+        Identifier with-else
-          Identifier with-else
         colon :
         Block
           FunctionCallOrIdentifier
@@ -82,8 +82,7 @@ describe('if/else if/else', () => {
     end`).toMatchTree(`
       IfExpr
         keyword if
-        FunctionCallOrIdentifier
+        Identifier with-else-if
-          Identifier with-else-if
         colon :
         Block
           FunctionCallOrIdentifier
@@ -91,8 +90,7 @@ describe('if/else if/else', () => {
         ElseIfExpr
           keyword else
           keyword if
-          FunctionCallOrIdentifier
+          Identifier another-condition
-            Identifier another-condition
           colon :
           Block
             FunctionCallOrIdentifier
@@ -113,8 +111,7 @@ describe('if/else if/else', () => {
     end`).toMatchTree(`
       IfExpr
         keyword if
-        FunctionCallOrIdentifier
+        Identifier with-else-if-else
-          Identifier with-else-if-else
         colon :
         Block
           FunctionCallOrIdentifier
@@ -122,8 +119,7 @@ describe('if/else if/else', () => {
         ElseIfExpr
           keyword else
           keyword if
-          FunctionCallOrIdentifier
+          Identifier another-condition
-            Identifier another-condition
           colon :
           Block
             FunctionCallOrIdentifier
@@ -131,8 +127,7 @@ describe('if/else if/else', () => {
         ElseIfExpr
           keyword else
           keyword if
-          FunctionCallOrIdentifier
+          Identifier yet-another-condition
-            Identifier yet-another-condition
           colon :
           Block
             FunctionCallOrIdentifier
@@ -178,7 +173,7 @@ describe('if/else if/else', () => {
     `)
   })
 
-  test("parses paren'd function calls in if tests", () => {
+  test('parses function calls in if tests', () => {
     expect(`if (var? 'abc'): true end`).toMatchTree(`
       IfExpr
         keyword if
@@ -195,6 +190,7 @@ describe('if/else if/else', () => {
     `)
   })
 
+
   test('parses function calls in else-if tests', () => {
     expect(`if false: true else if var? 'abc': true end`).toMatchTree(`
       IfExpr
@@ -218,7 +214,7 @@ describe('if/else if/else', () => {
     `)
   })
 
-  test("parses paren'd function calls in else-if tests", () => {
+  test('parses function calls in else-if tests', () => {
     expect(`if false: true else if (var? 'abc'): true end`).toMatchTree(`
       IfExpr
         keyword if
@@ -285,6 +281,7 @@ describe('while', () => {
     keyword end`)
   })
 
+
   test('compound expression', () => {
     expect(`while a > 0 and b < 100 and c < 1000: true end`).toMatchTree(`
   WhileExpr
@@ -313,8 +310,8 @@ describe('while', () => {
 
   test('multiline infinite loop', () => {
     expect(`
-      while true:
+      while true: 
-        true
+        true 
       end`).toMatchTree(`
   WhileExpr
     keyword while
@@ -327,7 +324,7 @@ describe('while', () => {
 
   test('multiline basic expression', () => {
     expect(`
-      while a > 0:
+      while a > 0: 
         true
       end`).toMatchTree(`
   WhileExpr
@@ -342,10 +339,11 @@ describe('while', () => {
     keyword end`)
   })
 
+
   test('multiline compound expression', () => {
     expect(`
-      while a > 0 and b < 100 and c < 1000:
+      while a > 0 and b < 100 and c < 1000: 
-        true
+        true 
       end`).toMatchTree(`
   WhileExpr
     keyword while
@@ -370,4 +368,4 @@ describe('while', () => {
       Boolean true
     keyword end`)
   })
-})
+})

src/parser/tests/destructuring.test.ts

@@ -1,56 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('Array destructuring', () => {
-  test('parses array pattern with two variables', () => {
-    expect('[ a b ] = [ 1 2 3 4]').toMatchTree(`
-      Assign
-        Array
-          Identifier a
-          Identifier b
-        Eq =
-        Array
-          Number 1
-          Number 2
-          Number 3
-          Number 4`)
-  })
-
-  test('parses array pattern with one variable', () => {
-    expect('[ x ] = [ 42 ]').toMatchTree(`
-      Assign
-        Array
-          Identifier x
-        Eq =
-        Array
-          Number 42`)
-  })
-
-  test('parses array pattern with emoji identifiers', () => {
-    expect('[ 🚀 💎 ] = [ 1 2 ]').toMatchTree(`
-      Assign
-        Array
-          Identifier 🚀
-          Identifier 💎
-        Eq =
-        Array
-          Number 1
-          Number 2`)
-  })
-
-  test('works with dotget', () => {
-    expect('[ a ] = [ [1 2 3] ]; a.1').toMatchTree(`
-      Assign
-        Array
-          Identifier a
-        Eq =
-        Array
-          Array
-            Number 1
-            Number 2
-            Number 3
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot a
-          Number 1`)
-  })
-})

src/parser/tests/dot-get.test.ts

@@ -1,44 +1,6 @@
 import { describe, test, expect } from 'bun:test'
 import '../../testSetup'
 
-describe('DotGet whitespace sensitivity', () => {
-  test('no whitespace - DotGet works when identifier in scope', () => {
-    expect('basename = 5; basename.prop').toMatchTree(`
-      Assign
-        AssignableIdentifier basename
-        Eq =
-        Number 5
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot basename
-          Identifier prop`)
-  })
-
-  test('space before dot - NOT DotGet, parses as division', () => {
-    expect('basename = 5; basename / prop').toMatchTree(`
-      Assign
-        AssignableIdentifier basename
-        Eq =
-        Number 5
-      BinOp
-        Identifier basename
-        Slash /
-        Identifier prop`)
-  })
-
-  test('dot followed by slash is Word, not DotGet', () => {
-    expect('basename ./cool').toMatchTree(`
-      FunctionCall
-        Identifier basename
-        PositionalArg
-          Word ./cool`)
-  })
-
-  test('identifier not in scope with dot becomes Word', () => {
-    expect('readme.txt').toMatchTree(`Word readme.txt`)
-  })
-})
-
 describe('DotGet', () => {
   test('readme.txt is Word when readme not in scope', () => {
     expect('readme.txt').toMatchTree(`Word readme.txt`)
@@ -237,7 +199,7 @@ end`).toMatchTree(`
     `)
   })
 
-  test.skip("dot get doesn't work with spaces", () => {
+  test("dot get doesn't work with spaces", () => {
     expect('obj . prop').toMatchTree(`
       FunctionCall
         Identifier obj
@@ -336,163 +298,4 @@ end`).toMatchTree(`
               Number 2
     `)
   })
-
-  // NOTE: these are parsed as DotGet(meta, DotGet(script, name)) because that's easiest,
-  // but the compiler flattens them
-  test('chained dot get: meta.script.name', () => {
-    expect('meta = 42; meta.script.name').toMatchTree(`
-      Assign
-        AssignableIdentifier meta
-        Eq =
-        Number 42
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot meta
-          DotGet
-            IdentifierBeforeDot script
-            Identifier name
-    `)
-  })
-
-  test('chained dot get: a.b.c.d', () => {
-    expect('a = 1; a.b.c.d').toMatchTree(`
-      Assign
-        AssignableIdentifier a
-        Eq =
-        Number 1
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot a
-          DotGet
-            IdentifierBeforeDot b
-            DotGet
-              IdentifierBeforeDot c
-              Identifier d
-    `)
-  })
-
-  test('chained dot get in function call', () => {
-    expect('config = 1; echo config.db.host').toMatchTree(`
-      Assign
-        AssignableIdentifier config
-        Eq =
-        Number 1
-      FunctionCall
-        Identifier echo
-        PositionalArg
-          DotGet
-            IdentifierBeforeDot config
-            DotGet
-              IdentifierBeforeDot db
-              Identifier host
-    `)
-  })
-
-  test('chained dot get with numeric index at end', () => {
-    expect('obj = 1; obj.items.0').toMatchTree(`
-      Assign
-        AssignableIdentifier obj
-        Eq =
-        Number 1
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot obj
-          DotGet
-            IdentifierBeforeDot items
-            Number 0
-    `)
-  })
-
-  test('chained dot get with ParenExpr at end', () => {
-    expect('obj = 1; obj.items.(i)').toMatchTree(`
-      Assign
-        AssignableIdentifier obj
-        Eq =
-        Number 1
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot obj
-          DotGet
-            IdentifierBeforeDot items
-            ParenExpr
-              FunctionCallOrIdentifier
-                Identifier i
-    `)
-  })
-
-  test('not in scope remains Word with chained dots', () => {
-    expect('readme.md.bak').toMatchTree(`Word readme.md.bak`)
-  })
-
-  test('chained dot get in nested functions', () => {
-    expect(`do cfg:
-  do inner:
-    cfg.db.host
-  end
-end`).toMatchTree(`
-      FunctionDef
-        Do do
-        Params
-          Identifier cfg
-        colon :
-        FunctionDef
-          Do do
-          Params
-            Identifier inner
-          colon :
-          FunctionCallOrIdentifier
-            DotGet
-              IdentifierBeforeDot cfg
-              DotGet
-                IdentifierBeforeDot db
-                Identifier host
-          keyword end
-        keyword end
-    `)
-  })
-
-  test('mixed simple and chained dot get', () => {
-    expect('obj = 1; obj.a; obj.b.c').toMatchTree(`
-      Assign
-        AssignableIdentifier obj
-        Eq =
-        Number 1
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot obj
-          Identifier a
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot obj
-          DotGet
-            IdentifierBeforeDot b
-            Identifier c
-    `)
-  })
-
-  test.skip('chained numeric dot get: row.2.1.b', () => {
-    expect('row = []; row.2.1').toMatchTree(`
-      Assign
-        AssignableIdentifier row
-        Eq =
-        Array []
-      FunctionCallOrIdentifier
-        DotGet
-          IdentifierBeforeDot row
-          DotGet
-            Number 2
-            DotGet
-              Number 1
-              Identifier b
-    `)
-
-    test('parses $.pid just fine', () => {
-      expect(`$.pid`).toMatchTree(`
-      FunctionCallOrIdentifier
-        DotGet
-          Dollar $
-          Identifier pid
-  `)
-    })
-  })
 })

src/parser/tests/exceptions.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('try/catch/finally/throw', () => {
   test('parses try with catch', () => {
     expect(`try:
@@ -137,24 +139,11 @@ describe('try/catch/finally/throw', () => {
     `)
   })
 
-  test('parses throw statement with BinOp', () => {
-    expect("throw 'error message:' + msg").toMatchTree(`
-      Throw
-        keyword throw
-        BinOp
-          String
-            StringFragment error message:
-          Plus +
-          Identifier msg
-    `)
-  })
-
   test('parses throw statement with identifier', () => {
     expect('throw error-object').toMatchTree(`
       Throw
         keyword throw
-        FunctionCallOrIdentifier
+        Identifier error-object
-          Identifier error-object
     `)
   })
 

src/parser/tests/function-blocks.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('single line function blocks', () => {
   test('work with no args', () => {
     expect(`trap: echo bye bye end`).toMatchTree(`
@@ -14,7 +16,8 @@ describe('single line function blocks', () => {
           Identifier bye
         PositionalArg
           Identifier bye
-    keyword end`)
+    keyword end`
+    )
   })
 
   test('work with one arg', () => {
@@ -32,7 +35,8 @@ describe('single line function blocks', () => {
           Identifier bye
         PositionalArg
           Identifier bye
-    keyword end`)
+    keyword end`
+    )
   })
 
   test('work with named args', () => {
@@ -52,9 +56,11 @@ describe('single line function blocks', () => {
           Identifier bye
         PositionalArg
           Identifier bye
-    keyword end`)
+    keyword end`
+    )
   })
 
+
   test('work with dot-get', () => {
     expect(`signals = [=]; signals.trap 'EXIT': echo bye bye end`).toMatchTree(`
     Assign
@@ -77,15 +83,16 @@ describe('single line function blocks', () => {
             Identifier bye
           PositionalArg
             Identifier bye
-      keyword end`)
+      keyword end`
+    )
   })
 })
 
 describe('multi line function blocks', () => {
   test('work with no args', () => {
     expect(`
-trap:
+trap: 
-  echo bye bye
+  echo bye bye 
 end
 `).toMatchTree(`
   FunctionCallWithBlock
@@ -99,13 +106,14 @@ end
           Identifier bye
         PositionalArg
           Identifier bye
-    keyword end`)
+    keyword end`
+    )
   })
 
   test('work with one arg', () => {
     expect(`
-trap EXIT:
+trap EXIT: 
-  echo bye bye
+  echo bye bye 
 end`).toMatchTree(`
   FunctionCallWithBlock
     FunctionCall
@@ -120,13 +128,14 @@ end`).toMatchTree(`
           Identifier bye
         PositionalArg
           Identifier bye
-    keyword end`)
+    keyword end`
+    )
   })
 
   test('work with named args', () => {
     expect(`
 attach signal='exit' code=1:
-  echo bye bye
+  echo bye bye 
 end`).toMatchTree(`
   FunctionCallWithBlock
     FunctionCall
@@ -146,14 +155,16 @@ end`).toMatchTree(`
           Identifier bye
         PositionalArg
           Identifier bye
-    keyword end`)
+    keyword end`
+    )
   })
 
+
   test('work with dot-get', () => {
     expect(`
 signals = [=]
-signals.trap 'EXIT':
+signals.trap 'EXIT': 
-  echo bye bye
+  echo bye bye 
 end`).toMatchTree(`
     Assign
       AssignableIdentifier signals
@@ -175,7 +186,8 @@ end`).toMatchTree(`
             Identifier bye
           PositionalArg
             Identifier bye
-      keyword end`)
+      keyword end`
+    )
   })
 })
 
@@ -252,7 +264,8 @@ end`).toMatchTree(`
 p:
   h1 class=bright style='font-family: helvetica' Heya
   h2 man that is (b wild)!
-end`).toMatchTree(`
+end`)
+      .toMatchTree(`
   FunctionCallWithBlock
     FunctionCallOrIdentifier
       Identifier p
@@ -287,4 +300,4 @@ end`).toMatchTree(`
           Word !
     keyword end`)
   })
-})
+})

src/parser/tests/functions.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('calling functions', () => {
   test('call with no args', () => {
     expect('tail').toMatchTree(`
@@ -41,57 +43,6 @@ describe('calling functions', () => {
     `)
   })
 
-  test('call with function', () => {
-    expect(`tail do x: x end`).toMatchTree(`
-      FunctionCall
-        Identifier tail
-        PositionalArg
-          FunctionDef
-            Do do
-            Params
-              Identifier x
-            colon :
-            FunctionCallOrIdentifier
-              Identifier x
-            keyword end
-    `)
-  })
-
-  test('call with arg and function', () => {
-    expect(`tail true do x: x end`).toMatchTree(`
-      FunctionCall
-        Identifier tail
-        PositionalArg
-          Boolean true
-        PositionalArg
-          FunctionDef
-            Do do
-            Params
-              Identifier x
-            colon :
-            FunctionCallOrIdentifier
-              Identifier x
-            keyword end
-    `)
-  })
-
-  test('call with function in named arg', () => {
-    expect(`tail callback=do x: x end`).toMatchTree(`
-      FunctionCall
-        Identifier tail
-        NamedArg
-          NamedArgPrefix callback=
-          FunctionDef
-            Do do
-            Params
-              Identifier x
-            colon :
-            FunctionCallOrIdentifier
-              Identifier x
-            keyword end
-      `)
-  })
-
   test('command with arg that is also a command', () => {
     expect('tail tail').toMatchTree(`
       FunctionCall
@@ -112,8 +63,8 @@ describe('calling functions', () => {
         Identifier tail
         NamedArg
           NamedArgPrefix lines=
-          ⚠
+          ⚠ 
-      ⚠`)
+      ⚠ `)
   })
 })
 
@@ -122,7 +73,7 @@ describe('Do', () => {
     expect('do: 1 end').toMatchTree(`
       FunctionDef
         Do do
-        Params
+        Params 
         colon :
         Number 1
         keyword end`)
@@ -280,4 +231,4 @@ describe('default params', () => {
           Identifier y
         keyword end`)
   })
-})
+})

src/parser/tests/import.test.ts

@@ -1,32 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('import', () => {
-  test('parses single import', () => {
-    expect(`import str`).toMatchTree(`
-      Import
-        keyword import
-        Identifier str
-      `)
-  })
-
-  test('parses multiple imports', () => {
-    expect(`import str math list`).toMatchTree(`
-      Import
-        keyword import
-        Identifier str
-        Identifier math
-        Identifier list
-      `)
-  })
-
-  test('parses named args', () => {
-    expect(`import str only=ends-with?`).toMatchTree(`
-      Import
-        keyword import
-        Identifier str
-        NamedArg
-          NamedArgPrefix only=
-          Identifier ends-with?
-      `)
-  })
-})

src/parser/tests/literals.test.ts

@@ -1,86 +1,6 @@
 import { expect, describe, test } from 'bun:test'
 
-describe('number literals', () => {
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
-  test('binary numbers', () => {
-    expect('0b110').toMatchTree(`
-      Number 0b110
-    `)
-  })
-
-  test('hex numbers', () => {
-    expect('0xdeadbeef').toMatchTree(`
-      Number 0xdeadbeef
-    `)
-  })
-
-  test('hex numbers uppercase', () => {
-    expect('0xFF').toMatchTree(`
-      Number 0xFF
-    `)
-  })
-
-  test('octal numbers', () => {
-    expect('0o644').toMatchTree(`
-      Number 0o644
-    `)
-
-    expect('0o055').toMatchTree(`
-      Number 0o055
-    `)
-  })
-
-  test('decimal numbers still work', () => {
-    expect('42').toMatchTree(`
-      Number 42
-    `)
-  })
-
-  test('negative binary', () => {
-    expect('-0b110').toMatchTree(`
-      Number -0b110
-    `)
-  })
-
-  test('negative hex', () => {
-    expect('-0xFF').toMatchTree(`
-      Number -0xFF
-    `)
-  })
-
-  test('negative octal', () => {
-    expect('-0o755').toMatchTree(`
-      Number -0o755
-    `)
-  })
-
-  test('positive prefix binary', () => {
-    expect('+0b110').toMatchTree(`
-      Number +0b110
-    `)
-  })
-
-  test('positive prefix hex', () => {
-    expect('+0xFF').toMatchTree(`
-      Number +0xFF
-    `)
-  })
-
-  test('positive prefix octal', () => {
-    expect('+0o644').toMatchTree(`
-      Number +0o644
-    `)
-  })
-
-  test('hex, binary, and octal in arrays', () => {
-    expect('[0xFF 0b110 0o644 42]').toMatchTree(`
-      Array
-        Number 0xFF
-        Number 0b110
-        Number 0o644
-        Number 42
-    `)
-  })
-})
 
 describe('array literals', () => {
   test('work with numbers', () => {
@@ -334,22 +254,6 @@ describe('dict literals', () => {
     `)
   })
 
-  test('work with functions', () => {
-    expect(`[trap=do x: x end]`).toMatchTree(`
-      Dict
-        NamedArg
-          NamedArgPrefix trap=
-          FunctionDef
-            Do do
-            Params
-              Identifier x
-            colon :
-            FunctionCallOrIdentifier
-              Identifier x
-            keyword end
-    `)
-  })
-
   test('can be nested', () => {
     expect('[a=one b=[two [c=three]]]').toMatchTree(`
       Dict
@@ -385,35 +289,14 @@ describe('dict literals', () => {
           Number 3
     `)
   })
-
-  test('can have spaces between equals', () => {
-    expect(`[
-      a = 1
-      b = 2
-      c = 3
-    ]`).toMatchTree(`
-      Dict
-        NamedArg
-          NamedArgPrefix a =
-          Number 1
-        NamedArg
-          NamedArgPrefix b =
-          Number 2
-        NamedArg
-          NamedArgPrefix c =
-          Number 3
-    `)
-  })
-
   test('empty dict', () => {
     expect('[=]').toMatchTree(`
       Dict [=]
     `)
-  })
 
-  test('empty dict w whitespace', () => {
     expect('[ = ]').toMatchTree(`
-      Dict [ = ]
+      Array
+        Word =
     `)
   })
 

src/parser/tests/multiline.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('multiline', () => {
   test('parses multiline strings', () => {
     expect(`'first'\n'second'`).toMatchTree(`
@@ -74,12 +76,12 @@ end
     expect(`
       do:
           2
-
+   
       end
       `).toMatchTree(`
       FunctionDef
         Do do
-        Params
+        Params 
         colon :
         Number 2
         keyword end

src/parser/tests/pipes.test.ts

@@ -1,5 +1,7 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('pipe expressions', () => {
   test('simple pipe expression', () => {
     expect('echo hello | grep h').toMatchTree(`
@@ -173,235 +175,4 @@ describe('pipe expressions', () => {
           Identifier echo
       `)
   })
-
-  test('parenthesized expressions can be piped', () => {
-    expect(`(1 + 2) | echo`).toMatchTree(`
-      PipeExpr
-        ParenExpr
-          BinOp
-            Number 1
-            Plus +
-            Number 2
-        operator |
-        FunctionCallOrIdentifier
-          Identifier echo
-      `)
-  })
-
-  test('complex parenthesized expressions with pipes', () => {
-    expect(`((math.random) * 10 + 1) | math.floor`).toMatchTree(`
-      PipeExpr
-        ParenExpr
-          BinOp
-            BinOp
-              ParenExpr
-                FunctionCallOrIdentifier
-                  DotGet
-                    IdentifierBeforeDot math
-                    Identifier random
-              Star *
-              Number 10
-            Plus +
-            Number 1
-        operator |
-        FunctionCallOrIdentifier
-          DotGet
-            IdentifierBeforeDot math
-            Identifier floor
-      `)
-  })
-})
-
-describe('pipe continuation', () => {
-  test('pipe on next line', () => {
-    expect(`hello
-| echo`).toMatchTree(`
-      PipeExpr
-        FunctionCallOrIdentifier
-          Identifier hello
-        operator |
-        FunctionCallOrIdentifier
-          Identifier echo
-    `)
-
-    expect(`echo hello
-| grep h`).toMatchTree(`
-      PipeExpr
-        FunctionCall
-          Identifier echo
-          PositionalArg
-            Identifier hello
-        operator |
-        FunctionCall
-          Identifier grep
-          PositionalArg
-            Identifier h
-    `)
-  })
-
-  test('pipe on next non-empty line', () => {
-    expect(`hello
-
-
-| echo`).toMatchTree(`
-      PipeExpr
-        FunctionCallOrIdentifier
-          Identifier hello
-        operator |
-        FunctionCallOrIdentifier
-          Identifier echo
-    `)
-  })
-
-  test('multi-line pipe chain', () => {
-    expect(`echo hello
-| grep h
-| sort`).toMatchTree(`
-      PipeExpr
-        FunctionCall
-          Identifier echo
-          PositionalArg
-            Identifier hello
-        operator |
-        FunctionCall
-          Identifier grep
-          PositionalArg
-            Identifier h
-        operator |
-        FunctionCallOrIdentifier
-          Identifier sort
-    `)
-  })
-
-  test('pipe with indentation', () => {
-    expect(`echo hello
-  | grep h
-  | sort`).toMatchTree(`
-      PipeExpr
-        FunctionCall
-          Identifier echo
-          PositionalArg
-            Identifier hello
-        operator |
-        FunctionCall
-          Identifier grep
-          PositionalArg
-            Identifier h
-        operator |
-        FunctionCallOrIdentifier
-          Identifier sort
-    `)
-  })
-
-  test('pipe after operand on next line (trailing pipe style)', () => {
-    expect(`echo hello |
-grep h`).toMatchTree(`
-      PipeExpr
-        FunctionCall
-          Identifier echo
-          PositionalArg
-            Identifier hello
-        operator |
-        FunctionCall
-          Identifier grep
-          PositionalArg
-            Identifier h
-    `)
-  })
-
-  test('same-line pipes still work', () => {
-    expect('echo hello | grep h | sort').toMatchTree(`
-      PipeExpr
-        FunctionCall
-          Identifier echo
-          PositionalArg
-            Identifier hello
-        operator |
-        FunctionCall
-          Identifier grep
-          PositionalArg
-            Identifier h
-        operator |
-        FunctionCallOrIdentifier
-          Identifier sort
-    `)
-  })
-
-  test('lots of pipes', () => {
-    expect(`
-'this should help readability in long chains'
-  | split ' '
-  | map (ref str.to-upper)
-  | join '-'
-  | echo
-`).toMatchTree(`
-  PipeExpr
-    String
-      StringFragment this should help readability in long chains
-    operator |
-    FunctionCall
-      Identifier split
-      PositionalArg
-        String
-          StringFragment (space)
-    operator |
-    FunctionCall
-      Identifier map
-      PositionalArg
-        ParenExpr
-          FunctionCall
-            Identifier ref
-            PositionalArg
-              DotGet
-                IdentifierBeforeDot str
-                Identifier to-upper
-    operator |
-    FunctionCall
-      Identifier join
-      PositionalArg
-        String
-          StringFragment -
-    operator |
-    FunctionCallOrIdentifier
-      Identifier echo
-  `)
-  })
-})
-
-describe('Underscore', () => {
-  test('works in pipes', () => {
-    expect(`sub 3 1 | div (sub 110 9 | sub 1) _ | div 5`).toMatchTree(`
-      PipeExpr
-        FunctionCall
-          Identifier sub
-          PositionalArg
-            Number 3
-          PositionalArg
-            Number 1
-        operator |
-        FunctionCall
-          Identifier div
-          PositionalArg
-            ParenExpr
-              PipeExpr
-                FunctionCall
-                  Identifier sub
-                  PositionalArg
-                    Number 110
-                  PositionalArg
-                    Number 9
-                operator |
-                FunctionCall
-                  Identifier sub
-                  PositionalArg
-                    Number 1
-          PositionalArg
-            Underscore _
-        operator |
-        FunctionCall
-          Identifier div
-          PositionalArg
-            Number 5
-    `)
-  })
 })

src/parser/tests/strings.test.ts

@@ -1,13 +1,14 @@
 import { expect, describe, test } from 'bun:test'
 
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
 describe('string interpolation', () => {
   test('string with variable interpolation', () => {
     expect("'hello $name'").toMatchTree(`
       String
         StringFragment ${'hello '}
         Interpolation
-          FunctionCallOrIdentifier
+          Identifier name
-            Identifier name
     `)
   })
 
@@ -43,8 +44,7 @@ describe('string interpolation', () => {
       String
         StringFragment x/
         Interpolation
-          FunctionCallOrIdentifier
+          Identifier y
-            Identifier y
         StringFragment /z
     `)
   })
@@ -122,58 +122,8 @@ describe('string escape sequences', () => {
       String
         StringFragment value: 
         Interpolation
-          FunctionCallOrIdentifier
+          Identifier x
-            Identifier x
         EscapeSeq \\n
     `)
   })
 })
-
-describe('curly strings', () => {
-  test('work on one line', () => {
-    expect('{ one two three }').toMatchTree(`
-      String
-        CurlyString { one two three }
-    `)
-  })
-
-  test('work on multiple lines', () => {
-    expect(`{
-      one
-      two
-      three }`).toMatchTree(`
-    String
-      CurlyString {
-          one
-          two
-          three }`)
-  })
-
-  test('can contain other curlies', () => {
-    expect(`{ { one }
-      two
-      { three } }`).toMatchTree(`
-    String
-      CurlyString { { one }
-          two
-          { three } }`)
-  })
-})
-
-describe('double quoted strings', () => {
-  test('work', () => {
-    expect(`"hello world"`).toMatchTree(`
-      String
-        DoubleQuote "hello world"`)
-  })
-
-  test("don't interpolate", () => {
-    expect(`"hello $world"`).toMatchTree(`
-      String
-        DoubleQuote "hello $world"`)
-
-    expect(`"hello $(1 + 2)"`).toMatchTree(`
-      String
-        DoubleQuote "hello $(1 + 2)"`)
-  })
-})

src/parser/tests/tokens.test.ts

@@ -1,745 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('constant types', () => {
-  test('null', () => {
-    expect(`null`).toBeToken('Null')
-  })
-
-  test('boolean', () => {
-    expect(`true`).toMatchToken('Boolean', 'true')
-    expect(`false`).toMatchToken('Boolean', 'false')
-  })
-})
-
-describe('numbers', () => {
-  test('non-numbers', () => {
-    expect(`1st`).toMatchToken('Word', '1st')
-    expect(`1_`).toMatchToken('Word', '1_')
-    expect(`100.`).toMatchTokens({ type: 'Number', value: '100' }, { type: 'Operator', value: '.' })
-  })
-
-  test('simple numbers', () => {
-    expect(`1`).toMatchToken('Number', '1')
-    expect(`200`).toMatchToken('Number', '200')
-    expect(`5.20`).toMatchToken('Number', '5.20')
-    expect(`0.20`).toMatchToken('Number', '0.20')
-    expect(`-20`).toMatchToken('Number', '-20')
-    expect(`+20`).toMatchToken('Number', '+20')
-    expect(`-2134.34`).toMatchToken('Number', '-2134.34')
-    expect(`+20.5325`).toMatchToken('Number', '+20.5325')
-    expect(`1_000`).toMatchToken('Number', '1_000')
-    expect(`53_232_220`).toMatchToken('Number', '53_232_220')
-  })
-
-  test('binary numbers', () => {
-    expect('0b110').toMatchToken('Number', '0b110')
-  })
-
-  test('hex numbers', () => {
-    expect('0xdeadbeef').toMatchToken('Number', '0xdeadbeef')
-    expect('0x02d3f4').toMatchToken('Number', '0x02d3f4')
-  })
-
-  test('hex numbers uppercase', () => {
-    expect('0xFF').toMatchToken('Number', '0xFF')
-  })
-
-  test('octal numbers', () => {
-    expect('0o644').toMatchToken('Number', '0o644')
-    expect('0o055').toMatchToken('Number', '0o055')
-  })
-
-  test('negative binary', () => {
-    expect('-0b110').toMatchToken('Number', '-0b110')
-  })
-
-  test('negative hex', () => {
-    expect('-0xFF').toMatchToken('Number', '-0xFF')
-  })
-
-  test('negative octal', () => {
-    expect('-0o755').toMatchToken('Number', '-0o755')
-  })
-
-  test('positive prefix binary', () => {
-    expect('+0b110').toMatchToken('Number', '+0b110')
-  })
-
-  test('positive prefix hex', () => {
-    expect('+0xFF').toMatchToken('Number', '+0xFF')
-  })
-
-  test('positive prefix octal', () => {
-    expect('+0o644').toMatchToken('Number', '+0o644')
-  })
-
-  test('underscores in number', () => {
-    expect(`1_000`).toMatchToken('Number', '1_000')
-    expect(`1_0`).toMatchToken('Number', '1_0')
-    expect('0b11_0').toMatchToken('Number', '0b11_0')
-    expect('0xdead_beef').toMatchToken('Number', '0xdead_beef')
-    expect('0o64_4').toMatchToken('Number', '0o64_4')
-  })
-})
-
-describe('identifiers', () => {
-  test('regular', () => {
-    expect('name').toBeToken('Identifier')
-    expect('bobby-mcgee').toBeToken('Identifier')
-    expect('starts-with?').toBeToken('Identifier')
-    expect('📢').toMatchToken('Identifier', '📢')
-    expect(' 📢 ').toMatchToken('Identifier', '📢')
-    expect(' oink-🐷-oink').toMatchToken('Identifier', 'oink-🐷-oink')
-    expect('$').toMatchToken('Identifier', '$')
-    expect('$cool').toMatchToken('Identifier', '$cool')
-  })
-
-  test('one character identifiers', () => {
-    expect('a').toMatchToken('Identifier', 'a')
-    expect('z').toMatchToken('Identifier', 'z')
-    expect('$').toMatchToken('Identifier', '$')
-    expect('📢').toMatchToken('Identifier', '📢')
-    expect('?').toBeToken('Word') // ? alone is not valid identifier start
-  })
-
-  test('two character identifiers', () => {
-    expect('ab').toMatchToken('Identifier', 'ab')
-    expect('a1').toMatchToken('Identifier', 'a1')
-    expect('a-').toMatchToken('Identifier', 'a-')
-    expect('a?').toMatchToken('Identifier', 'a?') // ? valid at end
-    expect('ab?').toMatchToken('Identifier', 'ab?')
-  })
-
-  test('three+ character identifiers', () => {
-    expect('abc').toMatchToken('Identifier', 'abc')
-    expect('a-b').toMatchToken('Identifier', 'a-b')
-    expect('a1b').toMatchToken('Identifier', 'a1b')
-    expect('abc?').toMatchToken('Identifier', 'abc?') // ? valid at end
-    expect('a-b-c?').toMatchToken('Identifier', 'a-b-c?')
-  })
-
-  test('edge cases', () => {
-    expect('-bobby-mcgee').toBeToken('Word')
-    expect('starts-with??').toMatchToken('Identifier', 'starts-with??')
-    expect('starts?with?').toMatchToken('Identifier', 'starts?with?')
-    expect('a??b').toMatchToken('Identifier', 'a??b')
-    expect('oink-oink!').toBeToken('Word')
-    expect('dog#pound').toMatchToken('Word', 'dog#pound')
-    expect('http://website.com').toMatchToken('Word', 'http://website.com')
-    expect('school$cool').toMatchToken('Identifier', 'school$cool')
-    expect('EXIT:').toMatchTokens({ type: 'Word', value: 'EXIT' }, { type: 'Colon' })
-    expect(`if y == 1: 'cool' end`).toMatchTokens(
-      { type: 'Keyword', value: 'if' },
-      { type: 'Identifier', value: 'y' },
-      { type: 'Operator', value: '==' },
-      { type: 'Number', value: '1' },
-      { type: 'Colon' },
-      { type: 'String', value: `'cool'` },
-      { type: 'Keyword', value: 'end' },
-    )
-  })
-})
-
-describe('paths', () => {
-  test('starting with ./', () => {
-    expect('./tmp').toMatchToken('Word', './tmp')
-  })
-
-  test('starting with /', () => {
-    expect('/home/chris/dev').toMatchToken('Word', '/home/chris/dev')
-  })
-
-  test('identifiers with dots tokenize separately', () => {
-    expect('readme.txt').toMatchTokens(
-      { type: 'Identifier', value: 'readme' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'txt' },
-    )
-  })
-
-  test('words (non-identifiers) consume dots', () => {
-    expect('README.md').toMatchToken('Word', 'README.md')
-  })
-
-  test('all sorts of weird stuff', () => {
-    expect('dog#pound').toMatchToken('Word', 'dog#pound')
-    expect('my/kinda/place').toMatchToken('my/kinda/place')
-    expect('file://%/$##/@40!/index.php').toMatchToken('Word', 'file://%/$##/@40!/index.php')
-  })
-})
-
-describe('strings', () => {
-  test('single quoted', () => {
-    expect(`'hello world'`).toMatchToken('String', `'hello world'`)
-    expect(`'it\\'s a beautiful world'`).toMatchToken("'it\\'s a beautiful world'")
-  })
-
-  test('double quoted', () => {
-    expect(`"hello world"`).toMatchToken('String', `"hello world"`)
-    expect(`"it's a beautiful world"`).toMatchToken('String', `"it's a beautiful world"`)
-  })
-
-  test('empty strings', () => {
-    expect(`''`).toMatchToken('String', `''`)
-    expect(`""`).toMatchToken('String', `""`)
-  })
-
-  test('escape sequences', () => {
-    expect(`'hello\\nworld'`).toMatchToken('String', `'hello\\nworld'`)
-    expect(`'tab\\there'`).toMatchToken('String', `'tab\\there'`)
-    expect(`'quote\\''`).toMatchToken('String', `'quote\\''`)
-    expect(`'backslash\\\\'`).toMatchToken('String', `'backslash\\\\'`)
-    expect(`'dollar\\$sign'`).toMatchToken('String', `'dollar\\$sign'`)
-  })
-
-  test('unclosed strings - error case', () => {
-    // These should either fail or produce unexpected results
-    expect(`'hello`).toMatchToken('String', `'hello`)
-    expect(`"world`).toMatchToken('String', `"world`)
-  })
-})
-
-describe('curly strings', () => {
-  test('curly quoted', () => {
-    expect('{ one two three }').toMatchToken('String', `{ one two three }`)
-  })
-
-  test('work on multiple lines', () => {
-    expect(`{
-      one
-      two
-      three }`).toMatchToken(
-      'String',
-      `{
-      one
-      two
-      three }`,
-    )
-  })
-
-  test('can contain other curlies', () => {
-    expect(`{ { one }
-      two
-      { three } }`).toMatchToken(
-      'String',
-      `{ { one }
-      two
-      { three } }`,
-    )
-  })
-
-  test('empty curly string', () => {
-    expect('{}').toMatchToken('String', '{}')
-  })
-
-  test('unclosed curly string - error case', () => {
-    // Should either fail or produce unexpected results
-    expect('{ hello').toMatchToken('String', '{ hello')
-    expect('{ nested { unclosed }').toMatchToken('String', '{ nested { unclosed }')
-  })
-})
-
-describe('operators', () => {
-  test('math operators', () => {
-    // assignment
-    expect('=').toMatchToken('Operator', '=')
-
-    // logic
-    expect('or').toMatchToken('Operator', 'or')
-    expect('and').toMatchToken('Operator', 'and')
-
-    // bitwise
-    expect('band').toMatchToken('Operator', 'band')
-    expect('bor').toMatchToken('Operator', 'bor')
-    expect('bxor').toMatchToken('Operator', 'bxor')
-    expect('>>>').toMatchToken('Operator', '>>>')
-    expect('>>').toMatchToken('Operator', '>>')
-    expect('<<').toMatchToken('Operator', '<<')
-
-    // compound assignment
-    expect('??=').toMatchToken('Operator', '??=')
-    expect('+=').toMatchToken('Operator', '+=')
-    expect('-=').toMatchToken('Operator', '-=')
-    expect('*=').toMatchToken('Operator', '*=')
-    expect('/=').toMatchToken('Operator', '/=')
-    expect('%=').toMatchToken('Operator', '%=')
-
-    // nullish
-    expect('??').toMatchToken('Operator', '??')
-
-    // math
-    expect('**').toMatchToken('Operator', '**')
-    expect('*').toMatchToken('Operator', '*')
-    expect('/').toMatchToken('Operator', '/')
-    expect('+').toMatchToken('Operator', '+')
-    expect('-').toMatchToken('Operator', '-')
-    expect('%').toMatchToken('Operator', '%')
-
-    // comparison
-    expect('>=').toMatchToken('Operator', '>=')
-    expect('<=').toMatchToken('Operator', '<=')
-    expect('!=').toMatchToken('Operator', '!=')
-    expect('==').toMatchToken('Operator', '==')
-    expect('>').toMatchToken('Operator', '>')
-    expect('<').toMatchToken('Operator', '<')
-
-    // property access
-    expect('.').toMatchToken('Operator', '.')
-  })
-})
-
-describe('keywords', () => {
-  test('keywords', () => {
-    expect(`import`).toMatchToken('Keyword', 'import')
-
-    expect(`end`).toMatchToken('Keyword', 'end')
-    expect(`do`).toMatchToken('Keyword', 'do')
-
-    expect(`while`).toMatchToken('Keyword', 'while')
-
-    expect(`if`).toMatchToken('Keyword', 'if')
-    expect(`else`).toMatchToken('Keyword', 'else')
-
-    expect(`try`).toMatchToken('Keyword', 'try')
-    expect(`catch`).toMatchToken('Keyword', 'catch')
-    expect(`finally`).toMatchToken('Keyword', 'finally')
-    expect(`throw`).toMatchToken('Keyword', 'throw')
-    expect(`not`).toMatchToken('Keyword', 'not')
-  })
-})
-
-describe('regex', () => {
-  test('use double slash', () => {
-    expect(`//[0-9]+//`).toMatchToken('Regex', '//[0-9]+//')
-  })
-})
-
-describe('punctuation', () => {
-  test('underscore', () => {
-    expect(`_`).toBeToken('Underscore')
-    expect(`__`).toMatchToken('Word', '__')
-  })
-
-  test('semicolon', () => {
-    expect(`;`).toBeToken('Semicolon')
-  })
-
-  test('newline', () => {
-    expect('\n').toBeToken('Newline')
-  })
-
-  test('colon', () => {
-    expect(':').toBeToken('Colon')
-  })
-})
-
-describe('comments', () => {
-  test('comments', () => {
-    expect(`# hey friends`).toMatchToken('Comment', '# hey friends')
-    expect(`#hey-friends`).toMatchToken('Comment', '#hey-friends')
-  })
-})
-
-describe('brackets', () => {
-  test('parens', () => {
-    expect(`(`).toBeToken('OpenParen')
-    expect(`)`).toBeToken('CloseParen')
-  })
-
-  test('staples', () => {
-    expect(`[`).toBeToken('OpenBracket')
-    expect(`]`).toBeToken('CloseBracket')
-  })
-})
-
-describe('multiple tokens', () => {
-  test('constants work fine', () => {
-    expect(`null true false`).toMatchTokens(
-      { type: 'Null' },
-      { type: 'Boolean', value: 'true' },
-      { type: 'Boolean', value: 'false' },
-    )
-  })
-
-  test('numbers', () => {
-    expect(`100 -400.42 null`).toMatchTokens(
-      { type: 'Number', value: '100' },
-      { type: 'Number', value: '-400.42' },
-      { type: 'Null' },
-    )
-  })
-
-  test('whitespace', () => {
-    expect(`
-      'hello world'
-
-      'goodbye world'
-    `).toMatchTokens(
-      { type: 'Newline' },
-      { type: 'String', value: "'hello world'" },
-      { type: 'Newline' },
-      { type: 'Newline' },
-      { type: 'String', value: "'goodbye world'" },
-      { type: 'Newline' },
-    )
-  })
-
-  test('newline in parens is ignored', () => {
-    expect(`(
-      'hello world'
-
-      'goodbye world'
-     )`).toMatchTokens(
-      { type: 'OpenParen' },
-      { type: 'String', value: "'hello world'" },
-      { type: 'String', value: "'goodbye world'" },
-      { type: 'CloseParen' },
-    )
-  })
-
-  test('newline in brackets is ignored', () => {
-    expect(`[
-      a b
-c d
-
-e
-
-f
-
-    ]`).toMatchTokens(
-      { type: 'OpenBracket' },
-      { type: 'Identifier', value: 'a' },
-      { type: 'Identifier', value: 'b' },
-      { type: 'Identifier', value: 'c' },
-      { type: 'Identifier', value: 'd' },
-      { type: 'Identifier', value: 'e' },
-      { type: 'Identifier', value: 'f' },
-      { type: 'CloseBracket' },
-    )
-  })
-
-  test('function call', () => {
-    expect('echo hello world').toMatchTokens(
-      { type: 'Identifier', value: 'echo' },
-      { type: 'Identifier', value: 'hello' },
-      { type: 'Identifier', value: 'world' },
-    )
-  })
-
-  test('function call w/ parens', () => {
-    expect('echo(bold hello world)').toMatchTokens(
-      { type: 'Identifier', value: 'echo' },
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'bold' },
-      { type: 'Identifier', value: 'hello' },
-      { type: 'Identifier', value: 'world' },
-      { type: 'CloseParen' },
-    )
-
-    expect('echo (bold hello world)').toMatchTokens(
-      { type: 'Identifier', value: 'echo' },
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'bold' },
-      { type: 'Identifier', value: 'hello' },
-      { type: 'Identifier', value: 'world' },
-      { type: 'CloseParen' },
-    )
-  })
-
-  test('assignment', () => {
-    expect('x = 5').toMatchTokens(
-      { type: 'Identifier', value: 'x' },
-      { type: 'Operator', value: '=' },
-      { type: 'Number', value: '5' },
-    )
-  })
-
-  test('math expression', () => {
-    expect('1 + 2 * 3').toMatchTokens(
-      { type: 'Number', value: '1' },
-      { type: 'Operator', value: '+' },
-      { type: 'Number', value: '2' },
-      { type: 'Operator', value: '*' },
-      { type: 'Number', value: '3' },
-    )
-  })
-
-  test('inline comment', () => {
-    expect('x = 5 # set x').toMatchTokens(
-      { type: 'Identifier', value: 'x' },
-      { type: 'Operator', value: '=' },
-      { type: 'Number', value: '5' },
-      { type: 'Comment', value: '# set x' },
-    )
-  })
-
-  test('line comment', () => {
-    expect('x = 5 \n# hello\n set x').toMatchTokens(
-      { type: 'Identifier', value: 'x' },
-      { type: 'Operator', value: '=' },
-      { type: 'Number', value: '5' },
-      { type: 'Newline' },
-      { type: 'Comment', value: '# hello' },
-      { type: 'Newline' },
-      { type: 'Identifier', value: 'set' },
-      { type: 'Identifier', value: 'x' },
-    )
-  })
-
-  test('colons separate tokens', () => {
-    expect('x do: y').toMatchTokens(
-      { type: 'Identifier', value: 'x' },
-      { type: 'Keyword', value: 'do' },
-      { type: 'Colon' },
-      { type: 'Identifier', value: 'y' },
-    )
-
-    expect('x: y').toMatchTokens(
-      { type: 'Identifier', value: 'x' },
-      { type: 'Colon' },
-      { type: 'Identifier', value: 'y' },
-    )
-
-    expect('5: y').toMatchTokens(
-      { type: 'Number', value: '5' },
-      { type: 'Colon' },
-      { type: 'Identifier', value: 'y' },
-    )
-
-    expect(`if (var? 'abc'): y`).toMatchTokens(
-      { type: 'Keyword', value: 'if' },
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'var?' },
-      { type: 'String', value: `'abc'` },
-      { type: 'CloseParen' },
-      { type: 'Colon' },
-      { type: 'Identifier', value: 'y' },
-    )
-
-    expect(`
-do x:
-  y
-end`).toMatchTokens(
-      { type: 'Newline' },
-      { type: 'Keyword', value: 'do' },
-      { type: 'Identifier', value: 'x' },
-      { type: 'Colon' },
-      { type: 'Newline' },
-      { type: 'Identifier', value: 'y' },
-      { type: 'Newline' },
-      { type: 'Keyword', value: 'end' },
-    )
-  })
-
-  test('semicolons separate statements', () => {
-    expect('x; y').toMatchTokens(
-      { type: 'Identifier', value: 'x' },
-      { type: 'Semicolon' },
-      { type: 'Identifier', value: 'y' },
-    )
-  })
-
-  test('semicolons in parens', () => {
-    expect('(x; y)').toMatchTokens(
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'x' },
-      { type: 'Semicolon' },
-      { type: 'Identifier', value: 'y' },
-      { type: 'CloseParen' },
-    )
-  })
-
-  test('dot operator beginning word with slash', () => {
-    expect(`(basename ./cool)`).toMatchTokens(
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'basename' },
-      { type: 'Word', value: './cool' },
-      { type: 'CloseParen' },
-    )
-  })
-
-  test('dot word after identifier with space', () => {
-    expect(`expand-path .git`).toMatchTokens(
-      { type: 'Identifier', value: 'expand-path' },
-      { type: 'Word', value: '.git' },
-    )
-  })
-
-  test('dot operator after identifier without space', () => {
-    expect(`config.path`).toMatchTokens(
-      { type: 'Identifier', value: 'config' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'path' },
-    )
-  })
-})
-
-describe('nesting edge cases', () => {
-  test('deeply nested parens', () => {
-    expect('((nested))').toMatchTokens(
-      { type: 'OpenParen' },
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'nested' },
-      { type: 'CloseParen' },
-      { type: 'CloseParen' },
-    )
-  })
-
-  test('mixed nesting', () => {
-    expect('([combo])').toMatchTokens(
-      { type: 'OpenParen' },
-      { type: 'OpenBracket' },
-      { type: 'Identifier', value: 'combo' },
-      { type: 'CloseBracket' },
-      { type: 'CloseParen' },
-    )
-  })
-})
-
-describe('invalid numbers that should be words', () => {
-  test('invalid binary', () => {
-    expect('0b2').toMatchToken('Word', '0b2')
-    expect('0b123').toMatchToken('Word', '0b123')
-  })
-
-  test('invalid octal', () => {
-    expect('0o8').toMatchToken('Word', '0o8')
-    expect('0o999').toMatchToken('Word', '0o999')
-  })
-
-  test('invalid hex', () => {
-    expect('0xGGG').toMatchToken('Word', '0xGGG')
-    expect('0xZZZ').toMatchToken('Word', '0xZZZ')
-  })
-
-  test('multiple decimal points', () => {
-    expect('1.2.3').toMatchToken('Word', '1.2.3')
-  })
-})
-
-describe('unicode and emoji', () => {
-  test('greek letters', () => {
-    expect('αβγ').toMatchToken('Identifier', 'αβγ')
-    expect('delta-δ').toMatchToken('Identifier', 'delta-δ')
-  })
-
-  test('math symbols', () => {
-    expect('∑').toMatchToken('Identifier', '∑')
-    expect('∏').toMatchToken('Identifier', '∏')
-  })
-
-  test('CJK characters', () => {
-    expect('你好').toMatchToken('Identifier', '你好')
-    expect('こんにちは').toMatchToken('Identifier', 'こんにちは')
-  })
-})
-
-describe('empty and whitespace input', () => {
-  test('empty string', () => {
-    expect('').toMatchTokens()
-  })
-
-  test('only whitespace', () => {
-    expect('   ').toMatchTokens()
-  })
-
-  test('only tabs', () => {
-    expect('\t\t\t').toMatchTokens()
-  })
-
-  test('only newlines', () => {
-    expect('\n\n\n').toMatchTokens({ type: 'Newline' }, { type: 'Newline' }, { type: 'Newline' })
-  })
-})
-
-describe('named args', () => {
-  test("don't need spaces", () => {
-    expect(`named=arg`).toMatchTokens(
-      { type: 'NamedArgPrefix', value: 'named=' },
-      { type: 'Identifier', value: 'arg' },
-    )
-  })
-
-  test('can have spaces', () => {
-    expect(`named= arg`).toMatchTokens(
-      { type: 'NamedArgPrefix', value: 'named=' },
-      { type: 'Identifier', value: 'arg' },
-    )
-  })
-
-  test('can include numbers', () => {
-    expect(`named123= arg`).toMatchTokens(
-      { type: 'NamedArgPrefix', value: 'named123=' },
-      { type: 'Identifier', value: 'arg' },
-    )
-  })
-})
-
-describe('dot operator', () => {
-  test('standalone dot', () => {
-    expect('.').toMatchToken('Operator', '.')
-  })
-
-  test('dot between identifiers tokenizes as separate tokens', () => {
-    expect('config.path').toMatchTokens(
-      { type: 'Identifier', value: 'config' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'path' },
-    )
-  })
-
-  test('dot with number', () => {
-    expect('array.0').toMatchTokens(
-      { type: 'Identifier', value: 'array' },
-      { type: 'Operator', value: '.' },
-      { type: 'Number', value: '0' },
-    )
-  })
-
-  test('chained dots', () => {
-    expect('a.b.c').toMatchTokens(
-      { type: 'Identifier', value: 'a' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'b' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'c' },
-    )
-  })
-
-  test('identifier-like paths tokenize separately', () => {
-    expect('readme.txt').toMatchTokens(
-      { type: 'Identifier', value: 'readme' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'txt' },
-    )
-  })
-
-  test('word-like paths remain as single token', () => {
-    expect('./file.txt').toMatchToken('Word', './file.txt')
-    expect('README.TXT').toMatchToken('Word', 'README.TXT')
-  })
-
-  test('dot with paren expression', () => {
-    expect('obj.(1 + 2)').toMatchTokens(
-      { type: 'Identifier', value: 'obj' },
-      { type: 'Operator', value: '.' },
-      { type: 'OpenParen' },
-      { type: 'Number', value: '1' },
-      { type: 'Operator', value: '+' },
-      { type: 'Number', value: '2' },
-      { type: 'CloseParen' },
-    )
-  })
-
-  test('chained dot with paren expression', () => {
-    expect('obj.items.(i)').toMatchTokens(
-      { type: 'Identifier', value: 'obj' },
-      { type: 'Operator', value: '.' },
-      { type: 'Identifier', value: 'items' },
-      { type: 'Operator', value: '.' },
-      { type: 'OpenParen' },
-      { type: 'Identifier', value: 'i' },
-      { type: 'CloseParen' },
-    )
-  })
-})

src/parser/tokenizer.ts

@@ -0,0 +1,307 @@
+import { ExternalTokenizer, InputStream, Stack } from '@lezer/lr'
+import { Identifier, AssignableIdentifier, Word, IdentifierBeforeDot, Do } from './shrimp.terms'
+
+// doobie doobie do (we need the `do` keyword to know when we're defining params)
+export function specializeKeyword(ident: string) {
+  return ident === 'do' ? Do : -1
+}
+
+// tell the dotGet searcher about builtin globals
+export const globals: string[] = []
+export const setGlobals = (newGlobals: string[]) => {
+  globals.length = 0
+  globals.push(...newGlobals)
+}
+
+// The only chars that can't be words are whitespace, apostrophes, closing parens, and EOF.
+
+export const tokenizer = new ExternalTokenizer(
+  (input: InputStream, stack: Stack) => {
+    const ch = getFullCodePoint(input, 0)
+    if (!isWordChar(ch)) return
+
+    // Don't consume things that start with digits - let Number token handle it
+    if (isDigit(ch)) return
+
+    // Don't consume things that start with - or + followed by a digit (negative/positive numbers)
+    if ((ch === 45 /* - */ || ch === 43) /* + */ && isDigit(input.peek(1))) return
+
+    const isValidStart = isLowercaseLetter(ch) || isEmojiOrUnicode(ch)
+    const canBeWord = stack.canShift(Word)
+
+    // Consume all word characters, tracking if it remains a valid identifier
+    const { pos, isValidIdentifier, stoppedAtDot } = consumeWordToken(
+      input,
+      isValidStart,
+      canBeWord
+    )
+
+    // Check if we should emit IdentifierBeforeDot for property access
+    if (stoppedAtDot) {
+      const dotGetToken = checkForDotGet(input, stack, pos)
+
+      if (dotGetToken) {
+        input.advance(pos)
+        input.acceptToken(dotGetToken)
+      } else {
+        // Not in scope - continue consuming the dot as part of the word
+        const afterDot = consumeRestOfWord(input, pos + 1, canBeWord)
+        input.advance(afterDot)
+        input.acceptToken(Word)
+      }
+
+      return
+    }
+
+    // Advance past the token we consumed
+    input.advance(pos)
+
+    // Choose which token to emit
+    if (isValidIdentifier) {
+      const token = chooseIdentifierToken(input, stack)
+      input.acceptToken(token)
+    } else {
+      input.acceptToken(Word)
+    }
+  },
+  { contextual: true }
+)
+
+// Build identifier text from input stream, handling surrogate pairs for emoji
+const buildIdentifierText = (input: InputStream, length: number): string => {
+  let text = ''
+  for (let i = 0; i < length; i++) {
+    const charCode = input.peek(i)
+    if (charCode === -1) break
+
+    // Handle surrogate pairs for emoji (UTF-16 encoding)
+    if (charCode >= 0xd800 && charCode <= 0xdbff && i + 1 < length) {
+      const low = input.peek(i + 1)
+      if (low >= 0xdc00 && low <= 0xdfff) {
+        text += String.fromCharCode(charCode, low)
+        i++ // Skip the low surrogate
+        continue
+      }
+    }
+    text += String.fromCharCode(charCode)
+  }
+  return text
+}
+
+// Consume word characters, tracking if it remains a valid identifier
+// Returns the position after consuming, whether it's a valid identifier, and if we stopped at a dot
+const consumeWordToken = (
+  input: InputStream,
+  isValidStart: boolean,
+  canBeWord: boolean
+): { pos: number; isValidIdentifier: boolean; stoppedAtDot: boolean } => {
+  let pos = getCharSize(getFullCodePoint(input, 0))
+  let isValidIdentifier = isValidStart
+  let stoppedAtDot = false
+
+  while (true) {
+    const ch = getFullCodePoint(input, pos)
+
+    // Stop at dot if we have a valid identifier (might be property access)
+    if (ch === 46 /* . */ && isValidIdentifier) {
+      stoppedAtDot = true
+      break
+    }
+
+    // Stop if we hit a non-word character
+    if (!isWordChar(ch)) break
+
+    // Context-aware termination: semicolon/colon can end a word if followed by whitespace
+    // This allows `hello; 2` to parse correctly while `hello;world` stays as one word
+    if (canBeWord && (ch === 59 /* ; */ || ch === 58) /* : */) {
+      const nextCh = getFullCodePoint(input, pos + 1)
+      if (!isWordChar(nextCh)) break
+    }
+
+    // Track identifier validity: must be lowercase, digit, dash, or emoji/unicode
+    if (
+      !isLowercaseLetter(ch) &&
+      !isDigit(ch) &&
+      ch !== 45 /* - */ &&
+      ch !== 63 /* ? */ &&
+      !isEmojiOrUnicode(ch)
+    ) {
+      if (!canBeWord) break
+      isValidIdentifier = false
+    }
+
+    pos += getCharSize(ch)
+  }
+
+  return { pos, isValidIdentifier, stoppedAtDot }
+}
+
+// Consume the rest of a word after we've decided not to treat a dot as DotGet
+// Used when we have "file.txt" - we already consumed "file", now consume ".txt"
+const consumeRestOfWord = (input: InputStream, startPos: number, canBeWord: boolean): number => {
+  let pos = startPos
+  while (true) {
+    const ch = getFullCodePoint(input, pos)
+
+    // Stop if we hit a non-word character
+    if (!isWordChar(ch)) break
+
+    // Context-aware termination for semicolon/colon
+    if (canBeWord && (ch === 59 /* ; */ || ch === 58) /* : */) {
+      const nextCh = getFullCodePoint(input, pos + 1)
+      if (!isWordChar(nextCh)) break
+    }
+
+    pos += getCharSize(ch)
+  }
+  return pos
+}
+
+// Check if this identifier is in scope (for property access detection)
+// Returns IdentifierBeforeDot token if in scope, null otherwise
+const checkForDotGet = (input: InputStream, stack: Stack, pos: number): number | null => {
+  const identifierText = buildIdentifierText(input, pos)
+  const context = stack.context as { scope: { has(name: string): boolean } } | undefined
+
+  // If identifier is in scope, this is property access (e.g., obj.prop)
+  // If not in scope, it should be consumed as a Word (e.g., file.txt)
+  return context?.scope.has(identifierText) || globals.includes(identifierText)
+    ? IdentifierBeforeDot
+    : null
+}
+
+// Decide between AssignableIdentifier and Identifier using grammar state + peek-ahead
+const chooseIdentifierToken = (input: InputStream, stack: Stack): number => {
+  const canAssignable = stack.canShift(AssignableIdentifier)
+  const canRegular = stack.canShift(Identifier)
+
+  // Only one option is valid - use it
+  if (canAssignable && !canRegular) return AssignableIdentifier
+  if (canRegular && !canAssignable) return Identifier
+
+  // Both possible (ambiguous context) - peek ahead for '=' to disambiguate
+  // This happens at statement start where both `x = 5` (assign) and `echo x` (call) are valid
+  let peekPos = 0
+  while (true) {
+    const ch = getFullCodePoint(input, peekPos)
+    if (isWhiteSpace(ch)) {
+      peekPos += getCharSize(ch)
+    } else {
+      break
+    }
+  }
+
+  const nextCh = getFullCodePoint(input, peekPos)
+  const nextCh2 = getFullCodePoint(input, peekPos + 1)
+
+  // Check for compound assignment operators: +=, -=, *=, /=, %=
+  if (
+    [43 /* + */, 45 /* - */, 42 /* * */, 47 /* / */, 37 /* % */].includes(nextCh) &&
+    nextCh2 === 61 /* = */
+  ) {
+    // Found compound operator, check if it's followed by whitespace
+    const charAfterOp = getFullCodePoint(input, peekPos + 2)
+    if (isWhiteSpace(charAfterOp) || charAfterOp === -1 /* EOF */) {
+      return AssignableIdentifier
+    }
+  }
+
+  if (nextCh === 61 /* = */) {
+    // Found '=', but check if it's followed by whitespace
+    // If '=' is followed by non-whitespace (like '=cool*'), it won't be tokenized as Eq
+    // In that case, this should be Identifier (for function call), not AssignableIdentifier
+    const charAfterEquals = getFullCodePoint(input, peekPos + 1)
+    if (isWhiteSpace(charAfterEquals) || charAfterEquals === -1 /* EOF */) {
+      return AssignableIdentifier
+    }
+  }
+  return Identifier
+}
+
+// Character classification helpers
+const isWhiteSpace = (ch: number): boolean => {
+  return ch === 32 /* space */ || ch === 9 /* tab */ || ch === 13 /* \r */
+}
+
+const isWordChar = (ch: number): boolean => {
+  return (
+    !isWhiteSpace(ch) &&
+    ch !== 10 /* \n */ &&
+    ch !== 41 /* ) */ &&
+    ch !== 93 /* ] */ &&
+    ch !== -1 /* EOF */
+  )
+}
+
+const isLowercaseLetter = (ch: number): boolean => {
+  return ch >= 97 && ch <= 122 // a-z
+}
+
+const isDigit = (ch: number): boolean => {
+  return ch >= 48 && ch <= 57 // 0-9
+}
+
+const getFullCodePoint = (input: InputStream, pos: number): number => {
+  const ch = input.peek(pos)
+
+  // Check if this is a high surrogate (0xD800-0xDBFF)
+  if (ch >= 0xd800 && ch <= 0xdbff) {
+    const low = input.peek(pos + 1)
+    // Check if next is low surrogate (0xDC00-0xDFFF)
+    if (low >= 0xdc00 && low <= 0xdfff) {
+      // Combine surrogate pair into full code point
+      return 0x10000 + ((ch & 0x3ff) << 10) + (low & 0x3ff)
+    }
+  }
+
+  return ch
+}
+
+const isEmojiOrUnicode = (ch: number): boolean => {
+  return (
+    // Basic Emoticons
+    (ch >= 0x1f600 && ch <= 0x1f64f) ||
+    // Miscellaneous Symbols and Pictographs
+    (ch >= 0x1f300 && ch <= 0x1f5ff) ||
+    // Transport and Map Symbols
+    (ch >= 0x1f680 && ch <= 0x1f6ff) ||
+    // Regional Indicator Symbols (flags)
+    (ch >= 0x1f1e6 && ch <= 0x1f1ff) ||
+    // Miscellaneous Symbols (hearts, stars, weather)
+    (ch >= 0x2600 && ch <= 0x26ff) ||
+    // Dingbats (scissors, pencils, etc)
+    (ch >= 0x2700 && ch <= 0x27bf) ||
+    // Supplemental Symbols and Pictographs (newer emojis)
+    (ch >= 0x1f900 && ch <= 0x1f9ff) ||
+    // Symbols and Pictographs Extended-A (newest emojis)
+    (ch >= 0x1fa70 && ch <= 0x1faff) ||
+    // Various Asian Characters with emoji presentation
+    (ch >= 0x1f018 && ch <= 0x1f270) ||
+    // Variation Selectors (for emoji presentation)
+    (ch >= 0xfe00 && ch <= 0xfe0f) ||
+    // Additional miscellaneous items
+    (ch >= 0x238c && ch <= 0x2454) ||
+    // Combining Diacritical Marks for Symbols
+    (ch >= 0x20d0 && ch <= 0x20ff) ||
+    // Latin-1 Supplement (includes ², ³, ¹ and other special chars)
+    (ch >= 0x00a0 && ch <= 0x00ff) ||
+    // Greek and Coptic (U+0370-U+03FF)
+    (ch >= 0x0370 && ch <= 0x03ff) ||
+    // Mathematical Alphanumeric Symbols (U+1D400-U+1D7FF)
+    (ch >= 0x1d400 && ch <= 0x1d7ff) ||
+    // Mathematical Operators (U+2200-U+22FF)
+    (ch >= 0x2200 && ch <= 0x22ff) ||
+    // Superscripts and Subscripts (U+2070-U+209F)
+    (ch >= 0x2070 && ch <= 0x209f) ||
+    // Arrows (U+2190-U+21FF)
+    (ch >= 0x2190 && ch <= 0x21ff) ||
+    // Hiragana (U+3040-U+309F)
+    (ch >= 0x3040 && ch <= 0x309f) ||
+    // Katakana (U+30A0-U+30FF)
+    (ch >= 0x30a0 && ch <= 0x30ff) ||
+    // CJK Unified Ideographs (U+4E00-U+9FFF)
+    (ch >= 0x4e00 && ch <= 0x9fff)
+  )
+}
+
+const getCharSize = (ch: number) => (ch > 0xffff ? 2 : 1) // emoji takes 2 UTF-16 code units

src/parser/tokenizer2.ts

@@ -1,596 +0,0 @@
-import { isDebug } from '#utils/utils'
-
-export type Token = {
-  type: TokenType
-  value?: string
-  from: number
-  to: number
-}
-
-export enum TokenType {
-  Comment,
-
-  Keyword,
-  Operator,
-
-  Newline,
-  Semicolon,
-  Colon,
-  Underscore,
-
-  OpenParen,
-  CloseParen,
-  OpenBracket,
-  CloseBracket,
-
-  Identifier,
-  Word,
-  NamedArgPrefix,
-
-  Null,
-  Boolean,
-  Number,
-  String,
-  Regex,
-}
-
-const valueTokens = new Set([
-  TokenType.Comment,
-  TokenType.Keyword,
-  TokenType.Operator,
-  TokenType.Identifier,
-  TokenType.Word,
-  TokenType.NamedArgPrefix,
-  TokenType.Boolean,
-  TokenType.Number,
-  TokenType.String,
-  TokenType.Regex,
-  TokenType.Underscore,
-])
-
-const operators = new Set([
-  // assignment
-  '=',
-
-  // logic
-  'or',
-  'and',
-
-  // bitwise
-  'band',
-  'bor',
-  'bxor',
-  '>>>',
-  '>>',
-  '<<',
-
-  // compound assignment
-  '??=',
-  '+=',
-  '-=',
-  '*=',
-  '/=',
-  '%=',
-
-  // nullish
-  '??',
-
-  // math
-  '**',
-  '*',
-  '/',
-  '+',
-  '-',
-  '%',
-
-  // comparison
-  '>=',
-  '<=',
-  '!=',
-  '==',
-  '>',
-  '<',
-
-  // property access
-  '.',
-
-  // pipe
-  '|',
-])
-
-const keywords = new Set([
-  'import',
-  'end',
-  'do',
-  'if',
-  'while',
-  'if',
-  'else',
-  'try',
-  'catch',
-  'finally',
-  'throw',
-  'not',
-])
-
-// helper
-function c(strings: TemplateStringsArray, ...values: any[]) {
-  return strings.reduce((result, str, i) => result + str + (values[i] ?? ''), '').charCodeAt(0)
-}
-
-function s(c: number): string {
-  return String.fromCharCode(c)
-}
-
-export class Scanner {
-  input = ''
-  pos = 0
-  start = 0
-  char = 0
-  prev = 0
-  inParen = 0
-  inBracket = 0
-  tokens: Token[] = []
-  prevIsWhitespace = true
-
-  reset() {
-    this.input = ''
-    this.pos = 0
-    this.start = 0
-    this.char = 0
-    this.prev = 0
-    this.tokens.length = 0
-    this.prevIsWhitespace = true
-  }
-
-  peek(count = 0): number {
-    return getFullCodePoint(this.input, this.pos + count)
-  }
-
-  next(): number {
-    this.prevIsWhitespace = isWhitespace(this.char)
-    this.prev = this.char
-    this.char = this.peek()
-    this.pos += getCharSize(this.char)
-
-    return this.char
-  }
-
-  push(type: TokenType, from?: number, to?: number) {
-    from ??= this.start
-    to ??= this.pos - getCharSize(this.char)
-    if (to < from) to = from
-
-    this.tokens.push(
-      Object.assign(
-        {},
-        {
-          type,
-          from,
-          to,
-        },
-        valueTokens.has(type) ? { value: this.input.slice(from, to) } : {}
-      )
-    )
-
-    if (isDebug()) {
-      const tok = this.tokens.at(-1)
-      console.log(`≫ PUSH(${from},${to})`, TokenType[tok?.type || 0], '—', tok?.value)
-    }
-
-    this.start = this.pos
-  }
-
-  pushChar(type: TokenType) {
-    this.push(type, this.pos - 1, this.pos)
-  }
-
-  // turn shrimp code into shrimp tokens that get fed into the parser
-  tokenize(input: string): Token[] {
-    this.reset()
-    this.input = input
-    this.next()
-
-    while (this.char > 0) {
-      const char = this.char
-
-      if (char === c`#`) {
-        this.readComment()
-        continue
-      }
-
-      if (isBracket(char)) {
-        this.readBracket()
-        continue
-      }
-
-      if (isStringDelim(char)) {
-        this.readString(char)
-        continue
-      }
-
-      if (char === c`{`) {
-        this.readCurlyString()
-        continue
-      }
-
-      if (isIdentStart(char)) {
-        this.readWordOrIdent(true) // true = started with identifier char
-        continue
-      }
-
-      if (isDigit(char) || ((char === c`-` || char === c`+`) && isDigit(this.peek()))) {
-        this.readNumber()
-        continue
-      }
-
-      if (char === c`:`) {
-        this.pushChar(TokenType.Colon)
-        this.next()
-        continue
-      }
-
-      // whitespace-sensitive dot as operator (property access) only after identifier/number
-      if (char === c`.`) {
-        if (this.canBeDotGet(this.tokens.at(-1))) {
-          this.pushChar(TokenType.Operator)
-          this.next()
-          continue
-        }
-      }
-
-      if (char === c`/` && this.peek() === c`/`) {
-        this.readRegex()
-        continue
-      }
-
-      if (isWordChar(char)) {
-        this.readWordOrIdent(false) // false = didn't start with identifier char
-        continue
-      }
-
-      if (char === c`\n`) {
-        if (this.inParen === 0 && this.inBracket === 0) this.pushChar(TokenType.Newline)
-        this.next()
-        continue
-      }
-
-      if (char === c`;`) {
-        this.pushChar(TokenType.Semicolon)
-        this.next()
-        continue
-      }
-
-      this.next()
-    }
-
-    return this.tokens
-  }
-
-  readComment() {
-    this.start = this.pos - 1
-    while (this.char !== c`\n` && this.char > 0) this.next()
-    this.push(TokenType.Comment)
-  }
-
-  readBracket() {
-    switch (this.char) {
-      case c`(`:
-        this.inParen++
-        this.pushChar(TokenType.OpenParen)
-        break
-      case c`)`:
-        this.inParen--
-        this.pushChar(TokenType.CloseParen)
-        break
-      case c`[`:
-        this.inBracket++
-        this.pushChar(TokenType.OpenBracket)
-        break
-      case c`]`:
-        this.inBracket--
-        this.pushChar(TokenType.CloseBracket)
-        break
-    }
-    this.next()
-  }
-
-  readString(delim: number) {
-    this.start = this.pos - 1
-    this.next() // skip opening delim
-    while (this.char > 0 && (this.char !== delim || (this.char === delim && this.prev === c`\\`)))
-      this.next()
-    this.next() // skip closing delim
-
-    this.push(TokenType.String)
-  }
-
-  readCurlyString() {
-    this.start = this.pos - 1
-    let depth = 1
-    this.next()
-
-    while (depth > 0 && this.char > 0) {
-      if (this.char === c`{`) depth++
-      if (this.char === c`}`) depth--
-      this.next()
-    }
-
-    this.push(TokenType.String)
-  }
-
-  readWordOrIdent(startedWithIdentChar: boolean) {
-    this.start = this.pos - getCharSize(this.char)
-
-    while (isWordChar(this.char)) {
-      // stop at colon if followed by whitespace (e.g., 'do x: echo x end')
-      if (this.char === c`:`) {
-        const nextCh = this.peek()
-        if (isWhitespace(nextCh) || nextCh === 0) break
-      }
-
-      // stop at equal sign (named arg) - but only if what we've read so far is an identifier
-      if (this.char === c`=`) {
-        const soFar = this.input.slice(this.start, this.pos - getCharSize(this.char))
-        if (isIdentifer(soFar)) {
-          this.next()
-          break
-        }
-      }
-
-      // stop at dot only if it would create a valid property access
-      // AND only if we started with an identifier character (not for Words like README.txt)
-      if (startedWithIdentChar && this.char === c`.`) {
-        const nextCh = this.peek()
-        if (isIdentStart(nextCh) || isDigit(nextCh) || nextCh === c`(`) {
-          const soFar = this.input.slice(this.start, this.pos - getCharSize(this.char))
-          if (isIdentifer(soFar)) break
-        }
-      }
-
-      this.next()
-    }
-
-    const word = this.input.slice(this.start, this.pos - getCharSize(this.char))
-
-    // classify the token based on what we read
-    if (word === '_') this.push(TokenType.Underscore)
-    else if (word === 'null') this.push(TokenType.Null)
-    else if (word === 'true' || word === 'false') this.push(TokenType.Boolean)
-    else if (isKeyword(word)) this.push(TokenType.Keyword)
-    else if (isOperator(word)) this.push(TokenType.Operator)
-    else if (isIdentifer(word)) this.push(TokenType.Identifier)
-    else if (word.endsWith('=')) this.push(TokenType.NamedArgPrefix)
-    else this.push(TokenType.Word)
-  }
-
-  readNumber() {
-    this.start = this.pos - 1
-    while (isWordChar(this.char)) {
-      // stop at dot unless it's part of the number
-      if (this.char === c`.`) {
-        const nextCh = this.peek()
-        if (!isDigit(nextCh)) break
-      }
-
-      // stop at colon
-      if (this.char === c`:`) {
-        const nextCh = this.peek()
-        if (isWhitespace(nextCh) || nextCh === 0) break
-      }
-      this.next()
-    }
-    const ident = this.input.slice(this.start, this.pos - 1)
-    this.push(isNumber(ident) ? TokenType.Number : TokenType.Word)
-  }
-
-  readRegex() {
-    this.start = this.pos - 1
-    this.next() // skip 2nd /
-
-    while (this.char > 0) {
-      if (this.char === c`/` && this.peek() === c`/`) {
-        this.next() // skip /
-        this.next() // skip /
-
-        // read regex flags
-        while (this.char > 0 && isIdentStart(this.char)) this.next()
-
-        // validate regex
-        const to = this.pos - getCharSize(this.char)
-        const regexText = this.input.slice(this.start, to)
-        const [_, pattern, flags] = regexText.match(/^\/\/(.*)\/\/([gimsuy]*)$/) || []
-
-        if (pattern) {
-          try {
-            new RegExp(pattern, flags)
-            this.push(TokenType.Regex)
-            break
-          } catch (e) {
-            // invalid regex - fall through to Word
-          }
-        }
-
-        // invalid regex is treated as Word
-        this.push(TokenType.Word)
-        break
-      }
-
-      this.next()
-    }
-  }
-
-  canBeDotGet(lastToken?: Token): boolean {
-    return (
-      !this.prevIsWhitespace &&
-      !!lastToken &&
-      (lastToken.type === TokenType.Identifier ||
-        lastToken.type === TokenType.Number ||
-        lastToken.type === TokenType.CloseParen ||
-        lastToken.type === TokenType.CloseBracket)
-    )
-  }
-}
-
-const isNumber = (word: string): boolean => {
-  // regular number
-  if (/^[+-]?\d+(_?\d+)*(\.(\d+(_?\d+)*))?$/.test(word)) return true
-
-  // binary
-  if (/^[+-]?0b[01]+(_?[01]+)*(\.[01](_?[01]*))?$/.test(word)) return true
-
-  // octal
-  if (/^[+-]?0o[0-7]+(_?[0-7]+)*(\.[0-7](_?[0-7]*))?$/.test(word)) return true
-
-  // hex
-  if (/^[+-]?0x[0-9a-f]+([0-9a-f]_?[0-9a-f]+)*(\.([0-9a-f]_?[0-9a-f]*))?$/i.test(word)) return true
-
-  return false
-}
-
-const isIdentifer = (s: string): boolean => {
-  if (s.length === 0) return false
-
-  let pos = 0
-  const chars = []
-  while (pos < s.length) {
-    const out = getFullCodePoint(s, pos)
-    pos += getCharSize(out)
-    chars.push(out)
-  }
-
-  if (chars.length === 1) return isIdentStart(chars[0]!)
-  else if (chars.length === 2) return isIdentStart(chars[0]!) && isIdentEnd(chars[1]!)
-  else
-    return (
-      isIdentStart(chars[0]!) &&
-      chars.slice(1, chars.length - 1).every(isIdentChar) &&
-      isIdentEnd(chars.at(-1)!)
-    )
-}
-
-const isStringDelim = (ch: number): boolean => {
-  return ch === c`'` || ch === c`"`
-}
-
-export const isIdentStart = (char: number | string): boolean => {
-  let ch = typeof char === 'string' ? char.charCodeAt(0) : char
-  return isLowercaseLetter(ch) || isEmojiOrUnicode(ch) || ch === 36 /* $ */
-}
-
-export const isIdentChar = (char: number | string): boolean => {
-  let ch = typeof char === 'string' ? char.charCodeAt(0) : char
-  return isIdentStart(ch) || isDigit(ch) || ch === 45 /* - */ || ch === 63 /* ? */
-}
-
-const isIdentEnd = (char: number | string): boolean => {
-  return isIdentChar(char)
-}
-
-const isLowercaseLetter = (ch: number): boolean => {
-  return ch >= 97 && ch <= 122 // a-z
-}
-
-const isDigit = (ch: number): boolean => {
-  return ch >= 48 && ch <= 57 // 0-9
-}
-
-const isWhitespace = (ch: number): boolean => {
-  return (
-    ch === 32 /* space */ ||
-    ch === 9 /* tab */ ||
-    ch === 13 /* \r */ ||
-    ch === 10 /* \n */ ||
-    ch === -1 ||
-    ch === 0
-  ) /* EOF */
-}
-
-const isWordChar = (ch: number): boolean => {
-  return (
-    !isWhitespace(ch) &&
-    ch !== 10 /* \n */ &&
-    ch !== 59 /* ; */ &&
-    ch !== 40 /* ( */ &&
-    ch !== 41 /* ) */ &&
-    ch !== 93 /* ] */ &&
-    ch !== -1 /* EOF */
-  )
-}
-
-const isOperator = (word: string): boolean => {
-  return operators.has(word)
-}
-
-const isKeyword = (word: string): boolean => {
-  return keywords.has(word)
-}
-
-const isBracket = (char: number): boolean => {
-  return char === c`(` || char === c`)` || char === c`[` || char === c`]`
-}
-
-const getCharSize = (ch: number) => (ch > 0xffff ? 2 : 1) // emoji takes 2 UTF-16 code units
-
-const getFullCodePoint = (input: string, pos: number): number => {
-  const ch = input[pos]?.charCodeAt(0) || 0
-
-  // Check if this is a high surrogate (0xD800-0xDBFF)
-  if (ch >= 0xd800 && ch <= 0xdbff) {
-    const low = input[pos + 1]?.charCodeAt(0) || 0
-    // Check if next is low surrogate (0xDC00-0xDFFF)
-    if (low >= 0xdc00 && low <= 0xdfff) {
-      // Combine surrogate pair into full code point
-      return 0x10000 + ((ch & 0x3ff) << 10) + (low & 0x3ff)
-    }
-  }
-
-  return ch
-}
-
-const isEmojiOrUnicode = (ch: number): boolean => {
-  return (
-    // Basic Emoticons
-    (ch >= 0x1f600 && ch <= 0x1f64f) ||
-    // Miscellaneous Symbols and Pictographs
-    (ch >= 0x1f300 && ch <= 0x1f5ff) ||
-    // Transport and Map Symbols
-    (ch >= 0x1f680 && ch <= 0x1f6ff) ||
-    // Regional Indicator Symbols (flags)
-    (ch >= 0x1f1e6 && ch <= 0x1f1ff) ||
-    // Miscellaneous Symbols (hearts, stars, weather)
-    (ch >= 0x2600 && ch <= 0x26ff) ||
-    // Dingbats (scissors, pencils, etc)
-    (ch >= 0x2700 && ch <= 0x27bf) ||
-    // Supplemental Symbols and Pictographs (newer emojis)
-    (ch >= 0x1f900 && ch <= 0x1f9ff) ||
-    // Symbols and Pictographs Extended-A (newest emojis)
-    (ch >= 0x1fa70 && ch <= 0x1faff) ||
-    // Various Asian Characters with emoji presentation
-    (ch >= 0x1f018 && ch <= 0x1f270) ||
-    // Variation Selectors (for emoji presentation)
-    (ch >= 0xfe00 && ch <= 0xfe0f) ||
-    // Additional miscellaneous items
-    (ch >= 0x238c && ch <= 0x2454) ||
-    // Combining Diacritical Marks for Symbols
-    (ch >= 0x20d0 && ch <= 0x20ff) ||
-    // Latin-1 Supplement (includes ², ³, ¹ and other special chars)
-    (ch >= 0x00a0 && ch <= 0x00ff) ||
-    // Greek and Coptic (U+0370-U+03FF)
-    (ch >= 0x0370 && ch <= 0x03ff) ||
-    // Mathematical Alphanumeric Symbols (U+1D400-U+1D7FF)
-    (ch >= 0x1d400 && ch <= 0x1d7ff) ||
-    // Mathematical Operators (U+2200-U+22FF)
-    (ch >= 0x2200 && ch <= 0x22ff) ||
-    // Superscripts and Subscripts (U+2070-U+209F)
-    (ch >= 0x2070 && ch <= 0x209f) ||
-    // Arrows (U+2190-U+21FF)
-    (ch >= 0x2190 && ch <= 0x21ff) ||
-    // Hiragana (U+3040-U+309F)
-    (ch >= 0x3040 && ch <= 0x309f) ||
-    // Katakana (U+30A0-U+30FF)
-    (ch >= 0x30a0 && ch <= 0x30ff) ||
-    // CJK Unified Ideographs (U+4E00-U+9FFF)
-    (ch >= 0x4e00 && ch <= 0x9fff)
-  )
-}

src/prelude/date.ts

@@ -1,12 +0,0 @@
-export const date = {
-  now: () => Date.now(),
-  year: (time: number) => new Date(time).getFullYear(),
-  month: (time: number) => new Date(time).getMonth(),
-  date: (time: number) => new Date(time).getDate(),
-  hour: (time: number) => new Date(time).getHours(),
-  minute: (time: number) => new Date(time).getMinutes(),
-  second: (time: number) => new Date(time).getSeconds(),
-  ms: (time: number) => new Date(time).getMilliseconds(),
-  new: (year: number, month: number, day: number, hour = 0, minute = 0, second = 0, ms = 0) =>
-    new Date(year, month, day, hour, minute, second, ms).getTime(),
-}

src/prelude/dict.ts

@@ -1,13 +1,11 @@
-import { type Value, toString } from 'reefvm'
+import { type Value, toString, toValue } from 'reefvm'
 
 export const dict = {
   keys: (dict: Record<string, any>) => Object.keys(dict),
   values: (dict: Record<string, any>) => Object.values(dict),
-  entries: (dict: Record<string, any>) =>
+  entries: (dict: Record<string, any>) => Object.entries(dict).map(([k, v]) => ({ key: k, value: v })),
-    Object.entries(dict).map(([k, v]) => ({ key: k, value: v })),
   'has?': (dict: Record<string, any>, key: string) => key in dict,
-  get: (dict: Record<string, any>, key: string, defaultValue: any = null) =>
+  get: (dict: Record<string, any>, key: string, defaultValue: any = null) => dict[key] ?? defaultValue,
-    dict[key] ?? defaultValue,
   set: (dict: Value, key: Value, value: Value) => {
     const map = dict.value as Map<string, Value>
     map.set(toString(key), value)
@@ -32,6 +30,6 @@ export const dict = {
   'from-entries': (entries: [string, any][]) => Object.fromEntries(entries),
 }
 
-// raw functions deal directly in Value types, meaning we can modify collection
+  // raw functions deal directly in Value types, meaning we can modify collection
-// careful - they MUST return a Value!
+  // careful - they MUST return a Value!
-;(dict.set as any).raw = true
+  ; (dict.set as any).raw = true

src/prelude/fs.ts

@@ -1,146 +0,0 @@
-import { join, resolve, basename, dirname, extname } from 'path'
-import {
-  readdirSync,
-  mkdirSync,
-  rmdirSync,
-  readFileSync,
-  writeFileSync,
-  appendFileSync,
-  rmSync,
-  copyFileSync,
-  statSync,
-  lstatSync,
-  chmodSync,
-  symlinkSync,
-  readlinkSync,
-  watch,
-} from 'fs'
-
-export const fs = {
-  // Directory operations
-  ls: (path: string) => readdirSync(path),
-  mkdir: (path: string) => mkdirSync(path, { recursive: true }),
-  rmdir: (path: string) =>
-    rmdirSync(path === '/' || path === '' ? '/tmp/*' : path, { recursive: true }),
-  pwd: () => process.cwd(),
-  cd: (path: string) => process.chdir(path),
-
-  // Reading
-  read: (path: string) => readFileSync(path, 'utf-8'),
-  cat: (path: string) => {}, // added below
-  'read-bytes': (path: string) => [...readFileSync(path)],
-
-  // Writing
-  write: (path: string, content: string) => writeFileSync(path, content),
-  append: (path: string, content: string) => appendFileSync(path, content),
-
-  // File operations
-  delete: (path: string) => rmSync(path),
-  rm: (path: string) => {}, // added below
-  copy: (from: string, to: string) => copyFileSync(from, to),
-  move: (from: string, to: string) => {
-    fs.copy(from, to)
-    fs.rm(from)
-  },
-  mv: (from: string, to: string) => {}, // added below
-
-  // Path operations
-  basename: (path: string) => basename(path),
-  dirname: (path: string) => dirname(path),
-  extname: (path: string) => extname(path),
-  join: (...paths: string[]) => join(...paths),
-  resolve: (...paths: string[]) => resolve(...paths),
-
-  // File info
-  stat: (path: string) => {
-    try {
-      const stats = statSync(path)
-      const record = Object.fromEntries(Object.entries(stats))
-      record['atime'] = record['atimeMs']
-      record['ctime'] = record['ctimeMs']
-      record['mtime'] = record['mtimeMs']
-
-      delete record['atimeMs']
-      delete record['ctimeMs']
-      delete record['mtimeMs']
-
-      return record
-    } catch {
-      return {}
-    }
-  },
-  'exists?': (path: string) => {
-    try {
-      statSync(path)
-      return true
-    } catch {
-      return false
-    }
-  },
-  'file?': (path: string) => {
-    try {
-      return statSync(path).isFile()
-    } catch {
-      return false
-    }
-  },
-  'dir?': (path: string) => {
-    try {
-      return statSync(path).isDirectory()
-    } catch {
-      return false
-    }
-  },
-  'symlink?': (path: string) => {
-    try {
-      return lstatSync(path).isSymbolicLink()
-    } catch {
-      return false
-    }
-  },
-  'exec?': (path: string) => {
-    try {
-      const stats = statSync(path)
-      return !!(stats.mode & 0o111)
-    } catch {
-      return false
-    }
-  },
-  size: (path: string) => {
-    try {
-      return statSync(path).size
-    } catch {
-      return 0
-    }
-  },
-
-  // Permissions
-  chmod: (path: string, mode: number | string) => {
-    const numMode = typeof mode === 'string' ? parseInt(mode, 8) : mode
-    chmodSync(path, numMode)
-  },
-
-  // Symlinks
-  symlink: (target: string, path: string) => symlinkSync(target, path),
-  readlink: (path: string) => readlinkSync(path, 'utf-8'),
-
-  // Other
-  glob: (pattern: string) => {
-    const dir = pattern.substring(0, pattern.lastIndexOf('/'))
-    const match = pattern.substring(pattern.lastIndexOf('/') + 1)
-
-    if (!match.includes('*')) throw new Error('only * patterns supported')
-
-    const ext = match.split('*').pop()!
-    return readdirSync(dir)
-      .filter((f) => f.endsWith(ext))
-      .map((f) => join(dir, f))
-  },
-
-  watch: (path: string, callback: Function) =>
-    watch(path, (event, filename) => callback(event, filename)),
-}
-;(fs as any).cat = fs.read
-;(fs as any).mv = fs.move
-;(fs as any).cp = fs.copy
-;(fs as any).rm = fs.delete

src/prelude/index.ts

@@ -1,69 +1,29 @@
 // The prelude creates all the builtin Shrimp functions.
 
-import { join, resolve } from 'path'
 import {
-  type Value,
+  type Value, type VM, toValue,
-  type VM,
+  extractParamInfo, isWrapped, getOriginalFunction,
-  toValue,
-  extractParamInfo,
-  isWrapped,
-  getOriginalFunction,
 } from 'reefvm'
 
-import { date } from './date'
 import { dict } from './dict'
-import { fs } from './fs'
-import { json } from './json'
 import { load } from './load'
 import { list } from './list'
 import { math } from './math'
 import { str } from './str'
-import { types } from './types'
-import { runningInBrowser } from '#utils/utils'
 
-export const globals: Record<string, any> = {
+export const globals = {
-  date,
   dict,
-  fs,
-  json,
   load,
   list,
   math,
   str,
 
-  // shrimp runtime info
-  $: runningInBrowser
-    ? {
-        args: [],
-        argv: [],
-        env: {},
-        pid: 0,
-        cwd: '',
-        script: {
-          name: '',
-          path: '.',
-        },
-      }
-    : {
-        args: Bun.argv.slice(3),
-        argv: Bun.argv.slice(1),
-        env: process.env,
-        pid: process.pid,
-        cwd: process.env.PWD,
-        script: {
-          name: Bun.argv[2] || '(shrimp)',
-          path: resolve(join('.', Bun.argv[2] ?? '')),
-        },
-      },
-
   // hello
   echo: (...args: any[]) => {
-    console.log(
+    console.log(...args.map(a => {
-      ...args.map((a) => {
+      const v = toValue(a)
-        const v = toValue(a)
+      return ['array', 'dict'].includes(v.type) ? formatValue(v, true) : v.value
-        return ['array', 'dict'].includes(v.type) ? formatValue(v, true) : v.value
+    }))
-      })
-    )
     return toValue(null)
   },
 
@@ -80,34 +40,22 @@ export const globals: Record<string, any> = {
   'var?': function (this: VM, v: string) {
     return typeof v !== 'string' || this.scope.has(v)
   },
-  ref: (fn: Function) => fn,
-  import: function (this: VM, atNamed: Record<any, string | string[]> = {}, ...idents: string[]) {
-    const onlyArray = Array.isArray(atNamed.only) ? atNamed.only : [atNamed.only].filter((a) => a)
-    const only = new Set(onlyArray)
-    const wantsOnly = only.size > 0
-
-    for (const ident of idents) {
-      const module = this.get(ident)
-
-      if (!module) throw new Error(`import: can't find ${ident}`)
-      if (module.type !== 'dict') throw new Error(`import: can't import ${module.type}`)
-
-      for (const [name, value] of module.value.entries()) {
-        if (value.type === 'dict') throw new Error(`import: can't import dicts in dicts`)
-        if (wantsOnly && !only.has(name)) continue
-        this.set(name, value)
-      }
-    }
-  },
-
-  // env
-  exit: (num: number) => process.exit(num ?? 0),
 
   // type predicates
+  'string?': (v: any) => toValue(v).type === 'string',
+  'number?': (v: any) => toValue(v).type === 'number',
+  'boolean?': (v: any) => toValue(v).type === 'boolean',
+  'array?': (v: any) => toValue(v).type === 'array',
+  'dict?': (v: any) => toValue(v).type === 'dict',
+  'function?': (v: any) => {
+    const t = toValue(v).type
+    return t === 'function' || t === 'native'
+  },
+  'null?': (v: any) => toValue(v).type === 'null',
   'some?': (v: any) => toValue(v).type !== 'null',
 
   // boolean/logic
-  bnot: (n: number) => ~(n | 0),
+  not: (v: any) => !v,
 
   // utilities
   inc: (n: number) => n + 1,
@@ -118,13 +66,9 @@ export const globals: Record<string, any> = {
   length: (v: any) => {
     const value = toValue(v)
     switch (value.type) {
-      case 'string':
+      case 'string': case 'array': return value.value.length
-      case 'array':
+      case 'dict': return value.value.size
-        return value.value.length
+      default: throw new Error(`length: expected string, array, or dict, got ${value.type}`)
-      case 'dict':
-        return value.value.size
-      default:
-        throw new Error(`length: expected string, array, or dict, got ${value.type}`)
     }
   },
   at: (collection: any, index: number | string) => {
@@ -132,9 +76,7 @@ export const globals: Record<string, any> = {
     if (value.type === 'string' || value.type === 'array') {
       const idx = typeof index === 'number' ? index : parseInt(index as string)
       if (idx < 0 || idx >= value.value.length) {
-        throw new Error(
+        throw new Error(`at: index ${idx} out of bounds for ${value.type} of length ${value.value.length}`)
-          `at: index ${idx} out of bounds for ${value.type} of length ${value.value.length}`
-        )
       }
       return value.value[idx]
     } else if (value.type === 'dict') {
@@ -161,8 +103,7 @@ export const globals: Record<string, any> = {
   'empty?': (v: any) => {
     const value = toValue(v)
     switch (value.type) {
-      case 'string':
+      case 'string': case 'array':
-      case 'array':
         return value.value.length === 0
       case 'dict':
         return value.value.size === 0
@@ -176,6 +117,7 @@ export const globals: Record<string, any> = {
     for (const value of list) await cb(value)
     return list
   },
+
 }
 
 export const colors = {
@@ -188,7 +130,7 @@ export const colors = {
   red: '\x1b[31m',
   blue: '\x1b[34m',
   magenta: '\x1b[35m',
-  pink: '\x1b[38;2;255;105;180m',
+  pink: '\x1b[38;2;255;105;180m'
 }
 
 export function formatValue(value: Value, inner = false): string {
@@ -202,15 +144,15 @@ export function formatValue(value: Value, inner = false): string {
     case 'null':
       return `${colors.dim}null${colors.reset}`
     case 'array': {
-      const items = value.value.map((x) => formatValue(x, true)).join(' ')
+      const items = value.value.map(x => formatValue(x, true)).join(' ')
       return `${colors.blue}[${colors.reset}${items}${colors.blue}]${colors.reset}`
     }
     case 'dict': {
       const entries = Array.from(value.value.entries())
-        .reverse()
+        .map(([k, v]) => `${k}${colors.blue}=${colors.reset}${formatValue(v, true)}`)
-        .map(([k, v]) => `${k.trim()}${colors.blue}=${colors.reset}${formatValue(v, true)}`)
         .join(' ')
-      if (entries.length === 0) return `${colors.blue}[=]${colors.reset}`
+      if (entries.length === 0)
+        return `${colors.blue}[=]${colors.reset}`
       return `${colors.blue}[${colors.reset}${entries}${colors.blue}]${colors.reset}`
     }
     case 'function': {
@@ -227,7 +169,4 @@ export function formatValue(value: Value, inner = false): string {
     default:
       return String(value)
   }
-}
+}
-
-// add types functions to top-level namespace
-for (const [key, value] of Object.entries(types)) globals[key] = value

src/prelude/json.ts

@@ -1,6 +0,0 @@
-export const json = {
-  encode: (s: any) => JSON.stringify(s),
-  decode: (s: string) => JSON.parse(s),
-}
-;(json as any).parse = json.decode
-;(json as any).stringify = json.encode

src/prelude/list.ts

@@ -1,7 +1,7 @@
 import { type Value, toValue, toNull } from 'reefvm'
 
 export const list = {
-  slice: (list: any[], start: number, end?: number) => list.slice(start, end ? end : undefined),
+  slice: (list: any[], start: number, end?: number) => list.slice(start, end),
   map: async (list: any[], cb: Function) => {
     let acc: any[] = []
     for (const value of list) acc.push(await cb(value))
@@ -14,13 +14,6 @@ export const list = {
     }
     return acc
   },
-  reject: async (list: any[], cb: Function) => {
-    let acc: any[] = []
-    for (const value of list) {
-      if (!(await cb(value))) acc.push(value)
-    }
-    return acc
-  },
   reduce: async (list: any[], cb: Function, initial: any) => {
     let acc = initial
     for (const value of list) acc = await cb(acc, value)
@@ -36,8 +29,6 @@ export const list = {
   // predicates
   'empty?': (list: any[]) => list.length === 0,
   'contains?': (list: any[], item: any) => list.includes(item),
-  'includes?': (list: any[], item: any) => list.includes(item),
-  'has?': (list: any[], item: any) => list.includes(item),
   'any?': async (list: any[], cb: Function) => {
     for (const value of list) {
       if (await cb(value)) return true
@@ -46,7 +37,7 @@ export const list = {
   },
   'all?': async (list: any[], cb: Function) => {
     for (const value of list) {
-      if (!(await cb(value))) return false
+      if (!await cb(value)) return false
     }
     return true
   },
@@ -72,14 +63,8 @@ export const list = {
     const realList = list.value as any[]
     const realStart = start.value as number
     const realDeleteCount = deleteCount.value as number
-    return toValue(realList.splice(realStart, realDeleteCount, ...items))
+    const realItems = items.map(item => item.value)
-  },
+    return toValue(realList.splice(realStart, realDeleteCount, ...realItems))
-  insert: (list: Value, index: Value, item: Value) => {
-    if (list.type !== 'array') return toNull()
-    const realList = list.value as any[]
-    const realIndex = index.value as number
-    realList.splice(realIndex, 0, item)
-    return toValue(realList.length)
   },
 
   // sequence operations
@@ -131,7 +116,7 @@ export const list = {
     }
     return [truthy, falsy]
   },
-  compact: (list: any[]) => list.filter((x) => x != null),
+  compact: (list: any[]) => list.filter(x => x != null),
   'group-by': async (list: any[], cb: Function) => {
     const groups: Record<string, any[]> = {}
     for (const value of list) {
@@ -143,11 +128,11 @@ export const list = {
   },
 }
 
-// raw functions deal directly in Value types, meaning we can modify collection
+
-// careful - they MUST return a Value!
+  // raw functions deal directly in Value types, meaning we can modify collection
-;(list.splice as any).raw = true
+  // careful - they MUST return a Value!
-;(list.push as any).raw = true
+  ; (list.splice as any).raw = true
-;(list.pop as any).raw = true
+  ; (list.push as any).raw = true
-;(list.shift as any).raw = true
+  ; (list.pop as any).raw = true
-;(list.unshift as any).raw = true
+  ; (list.shift as any).raw = true
-;(list.insert as any).raw = true
+  ; (list.unshift as any).raw = true

src/prelude/load.ts

@@ -7,9 +7,7 @@ export const load = async function (this: VM, path: string): Promise<Record<stri
   const scope = this.scope
   const pc = this.pc
 
-  let fullPath = resolve(path)
+  const fullPath = resolve(path) + '.sh'
-  if (!path.includes('.')) fullPath += '.sh'
-
   const code = readFileSync(fullPath, 'utf-8')
 
   this.pc = this.instructions.length
@@ -20,11 +18,12 @@ export const load = async function (this: VM, path: string): Promise<Record<stri
   await this.continue()
 
   const module: Record<string, Value> = {}
-  for (const [name, value] of this.scope.locals.entries()) module[name] = value
+  for (const [name, value] of this.scope.locals.entries())
+    module[name] = value
 
   this.scope = scope
   this.pc = pc
   this.stopped = false
 
   return module
-}
+}

src/prelude/math.ts

@@ -16,10 +16,7 @@ export const math = {
     if (n < 0) throw new Error(`sqrt: cannot take square root of negative number ${n}`)
     return Math.sqrt(n)
   },
-  random: (min = 0, max = 1) => {
+  random: () => Math.random(),
-    if (min === 0 && max === 1) return Math.random()
-    return Math.floor(Math.random() * (max - min + 1)) + min
-  },
   clamp: (n: number, min: number, max: number) => {
     if (min > max) throw new Error(`clamp: min (${min}) must be less than or equal to max (${max})`)
     return Math.min(Math.max(n, min), max)
@@ -33,4 +30,4 @@ export const math = {
   'positive?': (n: number) => n > 0,
   'negative?': (n: number) => n < 0,
   'zero?': (n: number) => n === 0,
-}
+}

src/prelude/str.ts

@@ -17,37 +17,21 @@ export const str = {
   'last-index-of': (str: string, search: string) => String(str ?? '').lastIndexOf(search),
 
   // transformations
-  replace: (str: string, search: string, replacement: string) =>
+  replace: (str: string, search: string, replacement: string) => String(str ?? '').replace(search, replacement),
-    String(str ?? '').replace(search, replacement),
+  'replace-all': (str: string, search: string, replacement: string) => String(str ?? '').replaceAll(search, replacement),
-  'replace-all': (str: string, search: string, replacement: string) =>
+  slice: (str: string, start: number, end?: number | null) => String(str ?? '').slice(start, end ?? undefined),
-    String(str ?? '').replaceAll(search, replacement),
+  substring: (str: string, start: number, end?: number | null) => String(str ?? '').substring(start, end ?? undefined),
-  slice: (str: string, start: number, end?: number | null) =>
-    String(str ?? '').slice(start, end ?? undefined),
-  substring: (str: string, start: number, end?: number | null) =>
-    String(str ?? '').substring(start, end ?? undefined),
   repeat: (str: string, count: number) => {
     if (count < 0) throw new Error(`repeat: count must be non-negative, got ${count}`)
     if (!Number.isInteger(count)) throw new Error(`repeat: count must be an integer, got ${count}`)
     return String(str ?? '').repeat(count)
   },
-  'pad-start': (str: string, length: number, pad: string = ' ') =>
+  'pad-start': (str: string, length: number, pad: string = ' ') => String(str ?? '').padStart(length, pad),
-    String(str ?? '').padStart(length, pad),
+  'pad-end': (str: string, length: number, pad: string = ' ') => String(str ?? '').padEnd(length, pad),
-  'pad-end': (str: string, length: number, pad: string = ' ') =>
-    String(str ?? '').padEnd(length, pad),
-  capitalize: (str: string) => {
-    const s = String(str ?? '')
-    return s.charAt(0).toUpperCase() + s.slice(1).toLowerCase()
-  },
-  titlecase: (s: string) => {
-    return String(s ?? '')
-      .split(' ')
-      .map(str.capitalize)
-      .join(' ')
-  },
   lines: (str: string) => String(str ?? '').split('\n'),
   chars: (str: string) => String(str ?? '').split(''),
 
   // regex
   match: (str: string, regex: RegExp) => String(str ?? '').match(regex),
   'test?': (str: string, regex: RegExp) => regex.test(String(str ?? '')),
-}
+}

src/prelude/tests/date.test.ts

@@ -1,170 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('date', () => {
-  test('date.now returns current timestamp', () => {
-    expect(`date.now | number?`).toEvaluateTo(true)
-
-    expect(`(date.now) > 1577836800000`).toEvaluateTo(true)
-  })
-
-  test('date.new creates timestamp from components', () => {
-    expect(`
-      t = date.new 2024 0 1 12 0 0 500
-      [
-        (date.year t)
-        (date.month t)
-        (date.date t)
-        (date.hour t)
-        (date.minute t)
-        (date.second t)
-        (date.ms t)
-      ]
-    `).toEvaluateTo([2024, 0, 1, 12, 0, 0, 500])
-  })
-
-  test('date.new with minimal arguments', () => {
-    expect(`
-      t = date.new 2024 5 15
-      [
-        (date.year t)
-        (date.month t)
-        (date.date t)
-        (date.hour t)
-        (date.minute t)
-        (date.second t)
-        (date.ms t)
-      ]
-    `).toEvaluateTo([2024, 5, 15, 0, 0, 0, 0])
-  })
-
-  test('date.year extracts year', () => {
-    expect(`
-      t = date.new 2024 0 1
-      date.year t
-    `).toEvaluateTo(2024)
-
-    expect(`
-      t = date.new 1999 11 31
-      date.year t
-    `).toEvaluateTo(1999)
-  })
-
-  test('date.month extracts month (0-indexed)', () => {
-    // January = 0, December = 11
-    expect(`
-      jan = date.new 2024 0 1
-      dec = date.new 2024 11 31
-      [(date.month jan) (date.month dec)]
-    `).toEvaluateTo([0, 11])
-  })
-
-  test('date.date extracts day of month', () => {
-    expect(`
-      t = date.new 2024 5 15
-      date.date t
-    `).toEvaluateTo(15)
-
-    expect(`
-      date.new 2024 0 1 | date.date
-    `).toEvaluateTo(1)
-  })
-
-  test('date.hour extracts hour', () => {
-    expect(`
-      t = date.new 2024 0 1 14 30 45
-      date.hour t
-    `).toEvaluateTo(14)
-
-    expect(`
-      t = date.new 2024 0 1 0 0 0
-      date.hour t
-    `).toEvaluateTo(0)
-  })
-
-  test('date.minute extracts minute', () => {
-    expect(`
-      t = date.new 2024 0 1 14 30 45
-      date.minute t
-    `).toEvaluateTo(30)
-  })
-
-  test('date.second extracts second', () => {
-    expect(`
-      t = date.new 2024 0 1 14 30 45
-      date.second t
-    `).toEvaluateTo(45)
-  })
-
-  test('date.ms extracts milliseconds', () => {
-    expect(`
-      t = date.new 2024 0 1 14 30 45 250
-      date.ms t
-    `).toEvaluateTo(250)
-  })
-
-  test('round-trip: create and extract components', () => {
-    expect(`
-      t = date.new 2024 6 4 15 30 45 123
-      year = date.year t
-      month = date.month t
-      day = date.date t
-      hour = date.hour t
-      min = date.minute t
-      sec = date.second t
-      ms = date.ms t
-      [year month day hour min sec ms]
-    `).toEvaluateTo([2024, 6, 4, 15, 30, 45, 123])
-  })
-
-  test('edge cases - midnight', () => {
-    expect(`
-      t = date.new 2024 0 1 0 0 0 0
-      [
-        (date.hour t)
-        (date.minute t)
-        (date.second t)
-        (date.ms t)
-      ]
-    `).toEvaluateTo([0, 0, 0, 0])
-  })
-
-  test('edge cases - end of day', () => {
-    expect(`
-      t = date.new 2024 0 1 23 59 59 999
-      [
-        (date.hour t)
-        (date.minute t)
-        (date.second t)
-        (date.ms t)
-      ]
-    `).toEvaluateTo([23, 59, 59, 999])
-  })
-
-  test('edge cases - leap year', () => {
-    expect(`
-      t = date.new 2024 1 29
-      [
-        (date.year t)
-        (date.month t)
-        (date.date t)
-      ]
-    `).toEvaluateTo([2024, 1, 29])
-  })
-
-  test('combining date functions with arithmetic', () => {
-    expect(`
-      t = date.new 2024 5 15 10 30 0
-      next-hour = date.new 2024 5 15 11 30 0
-      (date.hour next-hour) - (date.hour t)
-    `).toEvaluateTo(1)
-  })
-
-  test('using date.now in calculations', () => {
-    // Check that date.now is in the past compared to a future timestamp
-    expect(`
-      now = (date.now)
-      future = date.new 2030 0 1
-      future > now
-    `).toEvaluateTo(true)
-  })
-})

src/prelude/tests/fs.test.ts

@@ -1,331 +0,0 @@
-import { expect, describe, test, beforeEach, afterEach } from 'bun:test'
-import { mkdirSync, writeFileSync, rmSync, existsSync } from 'fs'
-import { join, resolve } from 'path'
-import { fs } from '../fs'
-
-const TEST_DIR = resolve('./tmp/shrimp-fs-test')
-const CWD = process.cwd()
-
-beforeEach(() => {
-  if (existsSync(TEST_DIR)) {
-    rmSync(TEST_DIR, { recursive: true })
-  }
-  mkdirSync(TEST_DIR, { recursive: true })
-})
-
-afterEach(() => {
-  process.chdir(CWD)
-  if (existsSync(TEST_DIR)) {
-    rmSync(TEST_DIR, { recursive: true })
-  }
-})
-
-describe('fs - directory operations', () => {
-  test('fs.ls lists directory contents', () => {
-    writeFileSync(join(TEST_DIR, 'file1.txt'), 'content1')
-    writeFileSync(join(TEST_DIR, 'file2.txt'), 'content2')
-
-    const result = fs.ls(TEST_DIR)
-    expect(result).toContain('file1.txt')
-    expect(result).toContain('file2.txt')
-  })
-
-  test('fs.mkdir creates directory', () => {
-    const newDir = join(TEST_DIR, 'newdir')
-    fs.mkdir(newDir)
-    expect(existsSync(newDir)).toBe(true)
-  })
-
-  test('fs.rmdir removes empty directory', () => {
-    const dir = join(TEST_DIR, 'toremove')
-    mkdirSync(dir)
-    fs.rmdir(dir)
-    expect(existsSync(dir)).toBe(false)
-  })
-
-  test('fs.pwd returns current working directory', () => {
-    const result = fs.pwd()
-    expect(typeof result).toBe('string')
-    expect(result.length).toBeGreaterThan(0)
-  })
-
-  test('fs.cd changes current working directory', () => {
-    const originalCwd = process.cwd()
-    fs.cd(TEST_DIR)
-    expect(process.cwd()).toBe(TEST_DIR)
-    process.chdir(originalCwd) // restore
-  })
-})
-
-describe('fs - reading', () => {
-  test('fs.read reads file contents as string', () => {
-    const file = join(TEST_DIR, 'test.txt')
-    writeFileSync(file, 'hello world')
-
-    const result = fs.read(file)
-    expect(result).toBe('hello world')
-  })
-
-  test('fs.cat is alias for fs.read', () => {
-    const file = join(TEST_DIR, 'test.txt')
-    writeFileSync(file, 'hello world')
-
-    const result = fs.cat(file)
-    expect(result).toBe('hello world')
-  })
-
-  test('fs.read-bytes reads file as buffer', () => {
-    const file = join(TEST_DIR, 'test.bin')
-    writeFileSync(file, Buffer.from([1, 2, 3, 4]))
-
-    const result = fs['read-bytes'](file)
-    expect(result).toBeInstanceOf(Array)
-    expect(result).toEqual([1, 2, 3, 4])
-  })
-})
-
-describe('fs - writing', () => {
-  test('fs.write writes string to file', async () => {
-    const file = join(TEST_DIR, 'output.txt')
-    fs.write(file, 'test content')
-
-    const content = Bun.file(file).text()
-    expect(await content).toBe('test content')
-  })
-
-  test('fs.append appends to existing file', async () => {
-    const file = join(TEST_DIR, 'append.txt')
-    writeFileSync(file, 'first')
-    fs.append(file, ' second')
-
-    const content = await Bun.file(file).text()
-    expect(content).toBe('first second')
-  })
-})
-
-describe('fs - file operations', () => {
-  test('fs.rm removes file', () => {
-    const file = join(TEST_DIR, 'remove.txt')
-    writeFileSync(file, 'content')
-
-    fs.rm(file)
-    expect(existsSync(file)).toBe(false)
-  })
-
-  test('fs.delete is alias for fs.rm', () => {
-    const file = join(TEST_DIR, 'delete.txt')
-    writeFileSync(file, 'content')
-
-    fs.delete(file)
-    expect(existsSync(file)).toBe(false)
-  })
-
-  test('fs.copy copies file', async () => {
-    const src = join(TEST_DIR, 'source.txt')
-    const dest = join(TEST_DIR, 'dest.txt')
-    writeFileSync(src, 'content')
-
-    fs.copy(src, dest)
-    expect(await Bun.file(dest).text()).toBe('content')
-  })
-
-  test('fs.cp is alias for fs.copy', async () => {
-    const src = join(TEST_DIR, 'source2.txt')
-    const dest = join(TEST_DIR, 'dest2.txt')
-    writeFileSync(src, 'content')
-
-    fs.cp(src, dest)
-    expect(await Bun.file(dest).text()).toBe('content')
-  })
-
-  test('fs.move moves file', async () => {
-    const src = join(TEST_DIR, 'source.txt')
-    const dest = join(TEST_DIR, 'moved.txt')
-    writeFileSync(src, 'content')
-
-    fs.move(src, dest)
-    expect(existsSync(src)).toBe(false)
-    expect(await Bun.file(dest).text()).toBe('content')
-  })
-
-  test('fs.mv is alias for fs.move', async () => {
-    const src = join(TEST_DIR, 'source2.txt')
-    const dest = join(TEST_DIR, 'moved2.txt')
-    writeFileSync(src, 'content')
-
-    fs.mv(src, dest)
-    expect(existsSync(src)).toBe(false)
-    expect(await Bun.file(dest).text()).toBe('content')
-  })
-})
-
-describe('fs - path operations', () => {
-  test('fs.basename extracts filename from path', () => {
-    expect(fs.basename('/path/to/file.txt')).toBe('file.txt')
-    expect(fs.basename('/path/to/dir/')).toBe('dir')
-  })
-
-  test('fs.dirname extracts directory from path', () => {
-    expect(fs.dirname('/path/to/file.txt')).toBe('/path/to')
-    expect(fs.dirname('/path/to/dir/')).toBe('/path/to')
-  })
-
-  test('fs.extname extracts file extension', () => {
-    expect(fs.extname('file.txt')).toBe('.txt')
-    expect(fs.extname('file.tar.gz')).toBe('.gz')
-    expect(fs.extname('noext')).toBe('')
-  })
-
-  test('fs.join joins path segments', () => {
-    expect(fs.join('path', 'to', 'file.txt')).toBe('path/to/file.txt')
-    expect(fs.join('/absolute', 'path')).toBe('/absolute/path')
-  })
-
-  test('fs.resolve resolves to absolute path', () => {
-    const result = fs.resolve('relative', 'path')
-    expect(result.startsWith('/')).toBe(true)
-    expect(result).toContain('relative')
-  })
-})
-
-describe('fs - file info', () => {
-  test('fs.stat returns file stats', () => {
-    const file = join(TEST_DIR, 'stat.txt')
-    writeFileSync(file, 'content')
-
-    const stats = fs.stat(file)
-    expect(stats).toHaveProperty('size')
-    expect(stats).toHaveProperty('mtime')
-    expect(stats.size).toBe(7) // 'content' is 7 bytes
-  })
-
-  test('fs.exists? checks if path exists', () => {
-    const file = join(TEST_DIR, 'exists.txt')
-    expect(fs['exists?'](file)).toBe(false)
-
-    writeFileSync(file, 'content')
-    expect(fs['exists?'](file)).toBe(true)
-  })
-
-  test('fs.file? checks if path is a file', () => {
-    const file = join(TEST_DIR, 'isfile.txt')
-    writeFileSync(file, 'content')
-
-    expect(fs['file?'](file)).toBe(true)
-    expect(fs['file?'](TEST_DIR)).toBe(false)
-  })
-
-  test('fs.dir? checks if path is a directory', () => {
-    const dir = join(TEST_DIR, 'isdir')
-    mkdirSync(dir)
-
-    expect(fs['dir?'](dir)).toBe(true)
-    expect(fs['dir?'](join(TEST_DIR, 'isfile.txt'))).toBe(false)
-  })
-
-  test('fs.symlink? checks if path is a symbolic link', () => {
-    const file = join(TEST_DIR, 'target.txt')
-    const link = join(TEST_DIR, 'link.txt')
-    writeFileSync(file, 'content')
-
-    fs.symlink(file, link)
-    expect(fs['symlink?'](link)).toBe(true)
-    expect(fs['symlink?'](file)).toBe(false)
-  })
-
-  test('fs.exec? checks if file is executable', () => {
-    const file = join(TEST_DIR, 'script.sh')
-    writeFileSync(file, '#!/bin/bash\necho hello')
-
-    fs.chmod(file, 0o755)
-    expect(fs['exec?'](file)).toBe(true)
-
-    fs.chmod(file, 0o644)
-    expect(fs['exec?'](file)).toBe(false)
-  })
-
-  test('fs.size returns file size in bytes', () => {
-    const file = join(TEST_DIR, 'sizeme.txt')
-    writeFileSync(file, 'content')
-
-    expect(fs.size(file)).toBe(7) // 'content' is 7 bytes
-  })
-})
-
-describe('fs - permissions', () => {
-  test('fs.chmod changes file permissions with octal number', () => {
-    const file = join(TEST_DIR, 'perms.txt')
-    writeFileSync(file, 'content')
-
-    fs.chmod(file, 0o755)
-    expect(fs['exec?'](file)).toBe(true)
-
-    fs.chmod(file, 0o644)
-    expect(fs['exec?'](file)).toBe(false)
-  })
-
-  test('fs.chmod changes file permissions with string', () => {
-    const file = join(TEST_DIR, 'perms2.txt')
-    writeFileSync(file, 'content')
-
-    fs.chmod(file, '755')
-    expect(fs['exec?'](file)).toBe(true)
-
-    fs.chmod(file, '644')
-    expect(fs['exec?'](file)).toBe(false)
-  })
-})
-
-describe('fs - symlinks', () => {
-  test('fs.symlink creates symbolic link', () => {
-    const target = join(TEST_DIR, 'target.txt')
-    const link = join(TEST_DIR, 'link.txt')
-    writeFileSync(target, 'content')
-
-    fs.symlink(target, link)
-    expect(fs['symlink?'](link)).toBe(true)
-    expect(fs.read(link)).toBe('content')
-  })
-
-  test('fs.readlink reads symbolic link target', () => {
-    const target = join(TEST_DIR, 'target.txt')
-    const link = join(TEST_DIR, 'link.txt')
-    writeFileSync(target, 'content')
-
-    fs.symlink(target, link)
-    expect(fs.readlink(link)).toBe(target)
-  })
-})
-
-describe('fs - other', () => {
-  test('fs.glob matches file patterns', () => {
-    writeFileSync(join(TEST_DIR, 'file1.txt'), '')
-    writeFileSync(join(TEST_DIR, 'file2.txt'), '')
-    writeFileSync(join(TEST_DIR, 'file3.md'), '')
-
-    const result = fs.glob(join(TEST_DIR, '*.txt'))
-    expect(result).toHaveLength(2)
-    expect(result).toContain(join(TEST_DIR, 'file1.txt'))
-    expect(result).toContain(join(TEST_DIR, 'file2.txt'))
-  })
-
-  test('fs.watch calls callback on file change', async () => {
-    const file = join(TEST_DIR, 'watch.txt')
-    writeFileSync(file, 'initial')
-
-    let called = false
-    const watcher = fs.watch(file, () => {
-      called = true
-    })
-
-    // Trigger change
-    await new Promise((resolve) => setTimeout(resolve, 100))
-    writeFileSync(file, 'updated')
-
-    // Wait for watcher
-    await new Promise((resolve) => setTimeout(resolve, 500))
-
-    expect(called).toBe(true)
-    watcher.close?.()
-  })
-})

src/prelude/tests/info.test.ts

@@ -1,139 +1,79 @@
 import { expect, describe, test } from 'bun:test'
+import { globals } from '#prelude'
 
 describe('var and var?', () => {
   test('var? checks if a variable exists', async () => {
-    await expect(`var? 'nada'`).toEvaluateTo(false)
+    await expect(`var? 'nada'`).toEvaluateTo(false, globals)
-    await expect(`var? 'info'`).toEvaluateTo(false)
+    await expect(`var? 'info'`).toEvaluateTo(false, globals)
-    await expect(`abc = abc; var? 'abc'`).toEvaluateTo(true)
+    await expect(`abc = abc; var? 'abc'`).toEvaluateTo(true, globals)
-    await expect(`var? 'var?'`).toEvaluateTo(true)
+    await expect(`var? 'var?'`).toEvaluateTo(true, globals)
 
-    await expect(`var? 'dict'`).toEvaluateTo(true)
+    await expect(`var? 'dict'`).toEvaluateTo(true, globals)
-    await expect(`var? dict`).toEvaluateTo(true)
+    await expect(`var? dict`).toEvaluateTo(true, globals)
   })
 
   test('var returns a value or null', async () => {
-    await expect(`var 'nada'`).toEvaluateTo(null)
+    await expect(`var 'nada'`).toEvaluateTo(null, globals)
-    await expect(`var nada`).toEvaluateTo(null)
+    await expect(`var nada`).toEvaluateTo(null, globals)
-    await expect(`var 'info'`).toEvaluateTo(null)
+    await expect(`var 'info'`).toEvaluateTo(null, globals)
-    await expect(`abc = my-string; var 'abc'`).toEvaluateTo('my-string')
+    await expect(`abc = my-string; var 'abc'`).toEvaluateTo('my-string', globals)
-    await expect(`abc = my-string; var abc`).toEvaluateTo(null)
+    await expect(`abc = my-string; var abc`).toEvaluateTo(null, globals)
   })
 })
 
 describe('type predicates', () => {
   test('string? checks for string type', async () => {
-    await expect(`string? 'hello'`).toEvaluateTo(true)
+    await expect(`string? 'hello'`).toEvaluateTo(true, globals)
-    await expect(`string? 42`).toEvaluateTo(false)
+    await expect(`string? 42`).toEvaluateTo(false, globals)
   })
 
   test('number? checks for number type', async () => {
-    await expect(`number? 42`).toEvaluateTo(true)
+    await expect(`number? 42`).toEvaluateTo(true, globals)
-    await expect(`number? 'hello'`).toEvaluateTo(false)
+    await expect(`number? 'hello'`).toEvaluateTo(false, globals)
   })
 
   test('boolean? checks for boolean type', async () => {
-    await expect(`boolean? true`).toEvaluateTo(true)
+    await expect(`boolean? true`).toEvaluateTo(true, globals)
-    await expect(`boolean? 42`).toEvaluateTo(false)
+    await expect(`boolean? 42`).toEvaluateTo(false, globals)
   })
 
   test('array? checks for array type', async () => {
-    await expect(`array? [1 2 3]`).toEvaluateTo(true)
+    await expect(`array? [1 2 3]`).toEvaluateTo(true, globals)
-    await expect(`array? 42`).toEvaluateTo(false)
+    await expect(`array? 42`).toEvaluateTo(false, globals)
   })
 
   test('dict? checks for dict type', async () => {
-    await expect(`dict? [a=1]`).toEvaluateTo(true)
+    await expect(`dict? [a=1]`).toEvaluateTo(true, globals)
-    await expect(`dict? []`).toEvaluateTo(false)
+    await expect(`dict? []`).toEvaluateTo(false, globals)
   })
 
   test('null? checks for null type', async () => {
-    await expect(`null? null`).toEvaluateTo(true)
+    await expect(`null? null`).toEvaluateTo(true, globals)
-    await expect(`null? 42`).toEvaluateTo(false)
+    await expect(`null? 42`).toEvaluateTo(false, globals)
   })
 
   test('some? checks for non-null', async () => {
-    await expect(`some? 42`).toEvaluateTo(true)
+    await expect(`some? 42`).toEvaluateTo(true, globals)
-    await expect(`some? null`).toEvaluateTo(false)
+    await expect(`some? null`).toEvaluateTo(false, globals)
   })
 })
 
 describe('introspection', () => {
   test('type returns proper types', async () => {
-    await expect(`type 'hello'`).toEvaluateTo('string')
+    await expect(`type 'hello'`).toEvaluateTo('string', globals)
-    await expect(`type 42`).toEvaluateTo('number')
+    await expect(`type 42`).toEvaluateTo('number', globals)
-    await expect(`type true`).toEvaluateTo('boolean')
+    await expect(`type true`).toEvaluateTo('boolean', globals)
-    await expect(`type false`).toEvaluateTo('boolean')
+    await expect(`type false`).toEvaluateTo('boolean', globals)
-    await expect(`type null`).toEvaluateTo('null')
+    await expect(`type null`).toEvaluateTo('null', globals)
-    await expect(`type [1 2 3]`).toEvaluateTo('array')
+    await expect(`type [1 2 3]`).toEvaluateTo('array', globals)
-    await expect(`type [a=1 b=2]`).toEvaluateTo('dict')
+    await expect(`type [a=1 b=2]`).toEvaluateTo('dict', globals)
   })
 
   test('inspect formats values', async () => {
-    await expect(`inspect 'hello'`).toEvaluateTo("\u001b[32m'hello\u001b[32m'\u001b[0m")
+    await expect(`inspect 'hello'`).toEvaluateTo("\u001b[32m'hello\u001b[32m'\u001b[0m", globals)
   })
 
   test('describe describes values', async () => {
-    await expect(`describe 'hello'`).toEvaluateTo("#<string: \u001b[32m'hello\u001b[32m'\u001b[0m>")
+    await expect(`describe 'hello'`).toEvaluateTo("#<string: \u001b[32m'hello\u001b[32m'\u001b[0m>", globals)
-  })
-})
-
-describe('environment', () => {
-  test('args is an array', async () => {
-    await expect(`array? $.args`).toEvaluateTo(true)
-  })
-
-  test('args can be accessed', async () => {
-    await expect(`type $.args`).toEvaluateTo('array')
-  })
-
-  test('argv includes more than just the args', async () => {
-    await expect(`list.first $.argv | str.ends-with? 'shrimp.test.ts'`).toEvaluateTo(true)
-  })
-})
-
-describe('ref', () => {
-  expect(`rnd = do x: true end; rnd | type`).toEvaluateTo('boolean')
-  expect(`rnd = do x: true end; ref rnd | type`).toEvaluateTo('function')
-
-  expect(`math.random | type`).toEvaluateTo('number')
-  expect(`ref math.random | type`).toEvaluateTo('native')
-
-  expect(`rnd = math.random; rnd | type`).toEvaluateTo('number')
-  expect(`rnd = ref math.random; rnd | type`).toEvaluateTo('number')
-  expect(`rnd = ref math.random; ref rnd | type`).toEvaluateTo('native')
-})
-
-describe('$ global dictionary', () => {
-  test('$.args is an array', async () => {
-    await expect(`$.args | array?`).toEvaluateTo(true)
-  })
-
-  test('$.args can be accessed', async () => {
-    await expect(`$.args | type`).toEvaluateTo('array')
-  })
-
-  test('$.script.name is a string', async () => {
-    await expect(`$.script.name | string?`).toEvaluateTo(true)
-  })
-
-  test('$.script.path is a string', async () => {
-    await expect(`$.script.path | string?`).toEvaluateTo(true)
-  })
-
-  test('$.env is a dict', async () => {
-    await expect(`$.env | dict?`).toEvaluateTo(true)
-  })
-
-  test('$.pid is a number', async () => {
-    await expect(`$.pid | number?`).toEvaluateTo(true)
-    await expect(`$.pid > 0`).toEvaluateTo(true)
-  })
-
-  test('$.cwd is a string', async () => {
-    await expect(`$.cwd | string?`).toEvaluateTo(true)
-  })
-
-  test('$.cwd returns current working directory', async () => {
-    await expect(`$.cwd`).toEvaluateTo(process.cwd())
   })
 })

src/prelude/tests/json.test.ts

@@ -1,96 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('json', () => {
-  test('json.decode', () => {
-    expect(`json.decode '[1,2,3]'`).toEvaluateTo([1, 2, 3])
-    expect(`json.decode '"heya"'`).toEvaluateTo('heya')
-    expect(`json.decode '[true, false, null]'`).toEvaluateTo([true, false, null])
-    expect(`json.decode '{"a": true, "b": false, "c": "yeah"}'`).toEvaluateTo({
-      a: true,
-      b: false,
-      c: 'yeah',
-    })
-  })
-
-  test('json.encode', () => {
-    expect(`json.encode [1 2 3]`).toEvaluateTo('[1,2,3]')
-    expect(`json.encode 'heya'`).toEvaluateTo('"heya"')
-    expect(`json.encode [true false null]`).toEvaluateTo('[true,false,null]')
-    expect(`json.encode [a=true b=false c='yeah'] | json.decode`).toEvaluateTo({
-      a: true,
-      b: false,
-      c: 'yeah',
-    })
-  })
-
-  test('edge cases - empty structures', () => {
-    expect(`json.decode '[]'`).toEvaluateTo([])
-    expect(`json.decode '{}'`).toEvaluateTo({})
-    expect(`json.encode []`).toEvaluateTo('[]')
-    expect(`json.encode [=]`).toEvaluateTo('{}')
-  })
-
-  test('edge cases - special characters in strings', () => {
-    expect(`json.decode '"hello\\\\nworld"'`).toEvaluateTo('hello\nworld')
-    expect(`json.decode '"tab\\\\there"'`).toEvaluateTo('tab\there')
-    expect(`json.decode '"forward/slash"'`).toEvaluateTo('forward/slash')
-    expect(`json.decode '"with\\\\\\\\backslash"'`).toEvaluateTo('with\\backslash')
-  })
-
-  test('numbers - integers and floats', () => {
-    expect(`json.decode '42'`).toEvaluateTo(42)
-    expect(`json.decode '0'`).toEvaluateTo(0)
-    expect(`json.decode '-17'`).toEvaluateTo(-17)
-    expect(`json.decode '3.14159'`).toEvaluateTo(3.14159)
-    expect(`json.decode '-0.5'`).toEvaluateTo(-0.5)
-  })
-
-  test('numbers - scientific notation', () => {
-    expect(`json.decode '1e10'`).toEvaluateTo(1e10)
-    expect(`json.decode '2.5e-3'`).toEvaluateTo(2.5e-3)
-    expect(`json.decode '1.23E+5'`).toEvaluateTo(1.23e5)
-  })
-
-  test('unicode - emoji and special characters', () => {
-    expect(`json.decode '"hello 👋"'`).toEvaluateTo('hello 👋')
-    expect(`json.decode '"🎉🚀✨"'`).toEvaluateTo('🎉🚀✨')
-    expect(`json.encode '你好'`).toEvaluateTo('"你好"')
-    expect(`json.encode 'café'`).toEvaluateTo('"café"')
-  })
-
-  test('nested structures - arrays', () => {
-    expect(`json.decode '[[1,2],[3,4],[5,6]]'`).toEvaluateTo([
-      [1, 2],
-      [3, 4],
-      [5, 6],
-    ])
-    expect(`json.decode '[1,[2,[3,[4]]]]'`).toEvaluateTo([1, [2, [3, [4]]]])
-  })
-
-  test('nested structures - objects', () => {
-    expect(`json.decode '{"user":{"name":"Alice","age":30}}'`).toEvaluateTo({
-      user: { name: 'Alice', age: 30 },
-    })
-    expect(`json.decode '{"a":{"b":{"c":"deep"}}}'`).toEvaluateTo({
-      a: { b: { c: 'deep' } },
-    })
-  })
-
-  test('nested structures - mixed arrays and objects', () => {
-    expect(`json.decode '[{"id":1,"tags":["a","b"]},{"id":2,"tags":["c"]}]'`).toEvaluateTo([
-      { id: 1, tags: ['a', 'b'] },
-      { id: 2, tags: ['c'] },
-    ])
-    expect(`json.decode '{"items":[1,2,3],"meta":{"count":3}}'`).toEvaluateTo({
-      items: [1, 2, 3],
-      meta: { count: 3 },
-    })
-  })
-
-  test('error handling - invalid json', () => {
-    expect(`json.decode '{invalid}'`).toFailEvaluation()
-    expect(`json.decode '[1,2,3'`).toFailEvaluation()
-    expect(`json.decode 'undefined'`).toFailEvaluation()
-    expect(`json.decode ''`).toFailEvaluation()
-  })
-})

src/prelude/tests/load.test.ts

@@ -1,41 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('loading a file', () => {
-  test(`imports all a file's functions`, async () => {
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      math.double 4
-    `).toEvaluateTo(8)
-
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      math.double (math.double 4)
-    `).toEvaluateTo(16)
-
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      dbl = ref math.double
-      dbl (dbl 2)
-    `).toEvaluateTo(8)
-
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      math.pi
-    `).toEvaluateTo(3.14)
-
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      math | at 🥧
-    `).toEvaluateTo(3.14159265359)
-
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      math.🥧
-    `).toEvaluateTo(3.14159265359)
-
-    expect(`
-      math = load ./src/prelude/tests/math.sh
-      math.add1 5
-    `).toEvaluateTo(6)
-  })
-})

src/prelude/tests/load.ts

@@ -0,0 +1,42 @@
+import { expect, describe, test } from 'bun:test'
+import { globals } from '#prelude'
+
+describe('use', () => {
+  test(`imports all a file's functions`, async () => {
+    expect(`
+      math = load ./src/prelude/tests/math
+      math.double 4
+    `).toEvaluateTo(8, globals)
+
+    expect(`
+      math = load ./src/prelude/tests/math
+      math.double (math.double 4) 
+    `).toEvaluateTo(16, globals)
+
+    expect(`
+      math = load ./src/prelude/tests/math
+      dbl = math.double 
+      dbl (dbl 2)
+    `).toEvaluateTo(8, globals)
+
+    expect(`
+      math = load ./src/prelude/tests/math
+      math.pi
+    `).toEvaluateTo(3.14, globals)
+
+    expect(`
+      math = load ./src/prelude/tests/math
+      math | at 🥧
+    `).toEvaluateTo(3.14159265359, globals)
+
+    expect(`
+      math = load ./src/prelude/tests/math
+      math.🥧
+    `).toEvaluateTo(3.14159265359, globals)
+
+    expect(`
+      math = load ./src/prelude/tests/math
+      math.add1 5
+    `).toEvaluateTo(6, globals)
+  })
+})

src/prelude/tests/prelude.test.ts

@@ -1,4 +1,5 @@
 import { expect, describe, test } from 'bun:test'
+import { globals } from '#prelude'
 
 describe('string operations', () => {
   test('to-upper converts to uppercase', async () => {
@@ -16,18 +17,6 @@ describe('string operations', () => {
     await expect(`str.trim '\\n\\thello\\t\\n'`).toEvaluateTo('hello')
   })
 
-  test('capitalize makes first char uppercase', async () => {
-    await expect(`str.capitalize 'hello'`).toEvaluateTo('Hello')
-    await expect(`str.capitalize 'HELLO'`).toEvaluateTo('Hello')
-    await expect(`str.capitalize 'hello world'`).toEvaluateTo('Hello world')
-  })
-
-  test('titlecase capitalizes each word', async () => {
-    await expect(`str.titlecase 'hello world'`).toEvaluateTo('Hello World')
-    await expect(`str.titlecase 'HELLO WORLD'`).toEvaluateTo('Hello World')
-    await expect(`str.titlecase 'the quick brown fox'`).toEvaluateTo('The Quick Brown Fox')
-  })
-
   test('split divides string by separator', async () => {
     await expect(`str.split 'a,b,c' ','`).toEvaluateTo(['a', 'b', 'c'])
     await expect(`str.split 'hello' ''`).toEvaluateTo(['h', 'e', 'l', 'l', 'o'])
@@ -77,7 +66,6 @@ describe('string operations', () => {
   test('slice extracts substring', async () => {
     await expect(`str.slice 'hello' 1 3`).toEvaluateTo('el')
     await expect(`str.slice 'hello' 2 null`).toEvaluateTo('llo')
-    await expect(`str.slice 'hello' 2`).toEvaluateTo('llo')
   })
 
   test('repeat repeats string', async () => {
@@ -117,17 +105,6 @@ describe('boolean logic', () => {
     await expect(`not 42`).toEvaluateTo(false)
     await expect(`not null`).toEvaluateTo(true)
   })
-
-  test('not works with function calls', async () => {
-    await expect(`equals = do x y: x == y end; not equals 5 5`).toEvaluateTo(false)
-    await expect(`equals = do x y: x == y end; not equals 5 10`).toEvaluateTo(true)
-  })
-
-  test('not works with binary operations and comparisons', async () => {
-    await expect(`not 5 > 10`).toEvaluateTo(true)
-    await expect(`not 10 > 5`).toEvaluateTo(false)
-    await expect(`not true and false`).toEvaluateTo(true)
-  })
 })
 
 describe('utilities', () => {
@@ -216,15 +193,6 @@ describe('collections', () => {
     `).toEvaluateTo([3, 4, 5])
   })
 
-  test('list.reject doesnt keep matching elements', async () => {
-    await expect(`
-      is-even = do x:
-        (x % 2) == 0
-      end
-      list.reject [1 2 3 4 5] is-even
-    `).toEvaluateTo([1, 3, 5])
-  })
-
   test('list.reduce accumulates values', async () => {
     await expect(`
       add = do acc x:
@@ -277,10 +245,7 @@ describe('collections', () => {
   })
 
   test('list.zip combines two arrays', async () => {
-    await expect(`list.zip [1 2] [3 4]`).toEvaluateTo([
+    await expect(`list.zip [1 2] [3 4]`).toEvaluateTo([[1, 3], [2, 4]])
-      [1, 3],
-      [2, 4],
-    ])
   })
 
   test('list.first returns first element', async () => {
@@ -374,22 +339,6 @@ describe('collections', () => {
     await expect(`arr = [1 2 3 4 5]; list.splice arr 3 2; arr`).toEvaluateTo([1, 2, 3])
   })
 
-  test('list.insert adds element at index and mutates array', async () => {
-    await expect(`arr = [1 2 4 5]; list.insert arr 2 3; arr`).toEvaluateTo([1, 2, 3, 4, 5])
-  })
-
-  test('list.insert returns array length', async () => {
-    await expect(`list.insert [1 2 4] 2 3`).toEvaluateTo(4)
-  })
-
-  test('list.insert at start', async () => {
-    await expect(`arr = [2 3]; list.insert arr 0 1; arr`).toEvaluateTo([1, 2, 3])
-  })
-
-  test('list.insert at end', async () => {
-    await expect(`arr = [1 2]; list.insert arr 2 99; arr`).toEvaluateTo([1, 2, 99])
-  })
-
   test('list.sort with no callback sorts ascending', async () => {
     await expect(`list.sort [3 1 4 1 5] null`).toEvaluateTo([1, 1, 3, 4, 5])
   })
@@ -450,10 +399,7 @@ describe('collections', () => {
     await expect(`
       gt-two = do x: x > 2 end
       list.partition [1 2 3 4 5] gt-two
-    `).toEvaluateTo([
+    `).toEvaluateTo([[3, 4, 5], [1, 2]])
-      [3, 4, 5],
-      [1, 2],
-    ])
   })
 
   test('list.compact removes null values', async () => {

src/prelude/tests/types.test.ts

@@ -1,143 +0,0 @@
-import { expect, describe, test } from 'bun:test'
-
-describe('type predicates', () => {
-  test('boolean? checks if value is boolean', async () => {
-    await expect(`boolean? true`).toEvaluateTo(true)
-    await expect(`boolean? false`).toEvaluateTo(true)
-    await expect(`boolean? 42`).toEvaluateTo(false)
-    await expect(`boolean? 'hello'`).toEvaluateTo(false)
-    await expect(`boolean? null`).toEvaluateTo(false)
-    await expect(`boolean? [1 2 3]`).toEvaluateTo(false)
-  })
-
-  test('number? checks if value is number', async () => {
-    await expect(`number? 42`).toEvaluateTo(true)
-    await expect(`number? 3.14`).toEvaluateTo(true)
-    await expect(`number? 0`).toEvaluateTo(true)
-    await expect(`number? -5`).toEvaluateTo(true)
-    await expect(`number? 'hello'`).toEvaluateTo(false)
-    await expect(`number? true`).toEvaluateTo(false)
-    await expect(`number? null`).toEvaluateTo(false)
-  })
-
-  test('string? checks if value is string', async () => {
-    await expect(`string? 'hello'`).toEvaluateTo(true)
-    await expect(`string? ''`).toEvaluateTo(true)
-    await expect(`string? world`).toEvaluateTo(true)
-    await expect(`string? 42`).toEvaluateTo(false)
-    await expect(`string? true`).toEvaluateTo(false)
-    await expect(`string? null`).toEvaluateTo(false)
-    await expect(`string? [1 2 3]`).toEvaluateTo(false)
-  })
-
-  test('array? checks if value is array', async () => {
-    await expect(`array? [1 2 3]`).toEvaluateTo(true)
-    await expect(`array? []`).toEvaluateTo(true)
-    await expect(`array? ['a' 'b']`).toEvaluateTo(true)
-    await expect(`array? [a=1 b=2]`).toEvaluateTo(false)
-    await expect(`array? 42`).toEvaluateTo(false)
-    await expect(`array? 'hello'`).toEvaluateTo(false)
-    await expect(`array? null`).toEvaluateTo(false)
-  })
-
-  test('list? is alias for array?', async () => {
-    await expect(`list? [1 2 3]`).toEvaluateTo(true)
-    await expect(`list? []`).toEvaluateTo(true)
-    await expect(`list? [a=1 b=2]`).toEvaluateTo(false)
-  })
-
-  test('dict? checks if value is dict', async () => {
-    await expect(`dict? [a=1 b=2]`).toEvaluateTo(true)
-    await expect(`dict? [=]`).toEvaluateTo(true)
-    await expect(`dict? [1 2 3]`).toEvaluateTo(false)
-    await expect(`dict? []`).toEvaluateTo(false)
-    await expect(`dict? 42`).toEvaluateTo(false)
-    await expect(`dict? 'hello'`).toEvaluateTo(false)
-  })
-
-  test('function? checks if value is function', async () => {
-    await expect(`
-      my-fn = do x: x * 2 end
-      function? my-fn
-    `).toEvaluateTo(true)
-    await expect(`function? inc`).toEvaluateTo(true)
-    await expect(`function? list.map`).toEvaluateTo(true)
-    await expect(`function? 42`).toEvaluateTo(false)
-    await expect(`function? 'hello'`).toEvaluateTo(false)
-    await expect(`function? [1 2 3]`).toEvaluateTo(false)
-  })
-
-  test('null? checks if value is null', async () => {
-    await expect(`null? null`).toEvaluateTo(true)
-    await expect(`null? 0`).toEvaluateTo(false)
-    await expect(`null? false`).toEvaluateTo(false)
-    await expect(`null? ''`).toEvaluateTo(false)
-    await expect(`null? []`).toEvaluateTo(false)
-  })
-})
-
-describe('type coercion', () => {
-  test('boolean coerces to boolean', async () => {
-    await expect(`boolean true`).toEvaluateTo(true)
-    await expect(`boolean false`).toEvaluateTo(false)
-    await expect(`boolean 1`).toEvaluateTo(true)
-    await expect(`boolean 0`).toEvaluateTo(false)
-    await expect(`boolean 'hello'`).toEvaluateTo(true)
-    await expect(`boolean ''`).toEvaluateTo(false)
-    await expect(`boolean null`).toEvaluateTo(false)
-    await expect(`boolean [1 2 3]`).toEvaluateTo(true)
-  })
-
-  test('number coerces to number', async () => {
-    await expect(`number 42`).toEvaluateTo(42)
-    await expect(`number '42'`).toEvaluateTo(42)
-    await expect(`number '3.14'`).toEvaluateTo(3.14)
-    await expect(`number true`).toEvaluateTo(1)
-    await expect(`number false`).toEvaluateTo(0)
-  })
-
-  test('string coerces to string', async () => {
-    await expect(`string 'hello'`).toEvaluateTo('hello')
-    await expect(`string 42`).toEvaluateTo('42')
-    await expect(`string true`).toEvaluateTo('true')
-    await expect(`string false`).toEvaluateTo('false')
-    await expect(`string null`).toEvaluateTo('null')
-  })
-})
-
-describe('type predicates in conditionals', () => {
-  test('using type predicates in if statements', async () => {
-    await expect(`
-      x = 42
-      if (number? x):
-        'is-num'
-      else:
-        'not-num'
-      end
-    `).toEvaluateTo('is-num')
-  })
-
-  test('filtering by type', async () => {
-    await expect(`
-      items = [1 'hello' 2 'world' 3]
-      list.filter items number?
-    `).toEvaluateTo([1, 2, 3])
-  })
-
-  test('filtering strings', async () => {
-    await expect(`
-      items = [1 'hello' 2 'world' 3]
-      list.filter items string?
-    `).toEvaluateTo(['hello', 'world'])
-  })
-
-  test('checking for functions', async () => {
-    await expect(`
-      double = do x: x * 2 end
-      not-fn = 42
-      is-fn = function? double
-      is-not-fn = function? not-fn
-      is-fn and (not is-not-fn)
-    `).toEvaluateTo(true)
-  })
-})

src/prelude/types.ts

@@ -1,21 +0,0 @@
-import { toValue } from 'reefvm'
-
-export const types = {
-  'boolean?': (v: any) => toValue(v).type === 'boolean',
-  boolean: (v: any) => Boolean(v),
-
-  'number?': (v: any) => toValue(v).type === 'number',
-  number: (v: any) => Number(v),
-
-  'string?': (v: any) => toValue(v).type === 'string',
-  string: (v: any) => String(v),
-
-  'array?': (v: any) => toValue(v).type === 'array',
-  'list?': (v: any) => toValue(v).type === 'array',
-
-  'dict?': (v: any) => toValue(v).type === 'dict',
-
-  'function?': (v: any) => ['function', 'native'].includes(toValue(v).type),
-
-  'null?': (v: any) => toValue(v).type === 'null',
-}

src/server/app.tsx

@@ -0,0 +1,10 @@
+import { Editor } from '#/editor/editor'
+import { render } from 'hono/jsx/dom'
+import './index.css'
+
+const App = () => {
+  return <Editor />
+}
+
+const root = document.getElementById('root')!
+render(<App />, root)

src/server/index.css

@@ -0,0 +1,84 @@
+:root {
+  /* Background colors */
+  --bg-editor: #011627;
+  --bg-output: #40318D;
+  --bg-status-bar: #1E2A4A;
+  --bg-status-border: #0E1A3A;
+  --bg-selection: #1D3B53;
+  --bg-variable-def: #1E2A4A;
+
+  /* Text colors */
+  --text-editor: #D6DEEB;
+  --text-output: #7C70DA;
+  --text-status: #B3A9FF55;
+  --caret: #80A4C2;
+
+  /* Syntax highlighting colors */
+  --color-keyword: #C792EA;
+  --color-function: #82AAFF;
+  --color-string: #C3E88D;
+  --color-number: #F78C6C;
+  --color-bool: #FF5370;
+  --color-operator: #89DDFF;
+  --color-paren: #676E95;
+  --color-function-call: #FF9CAC;
+  --color-variable-def: #FFCB6B;
+  --color-error: #FF6E6E;
+  --color-regex: #E1ACFF;
+
+  /* ANSI terminal colors */
+  --ansi-black: #011627;
+  --ansi-red: #FF5370;
+  --ansi-green: #C3E88D;
+  --ansi-yellow: #FFCB6B;
+  --ansi-blue: #82AAFF;
+  --ansi-magenta: #C792EA;
+  --ansi-cyan: #89DDFF;
+  --ansi-white: #D6DEEB;
+
+  /* ANSI bright colors (slightly more vibrant) */
+  --ansi-bright-black: #676E95;
+  --ansi-bright-red: #FF6E90;
+  --ansi-bright-green: #D4F6A8;
+  --ansi-bright-yellow: #FFE082;
+  --ansi-bright-blue: #A8C7FA;
+  --ansi-bright-magenta: #E1ACFF;
+  --ansi-bright-cyan: #A8F5FF;
+  --ansi-bright-white: #FFFFFF;
+}
+
+@font-face {
+  font-family: 'C64ProMono';
+  src: url('../../assets/C64_Pro_Mono-STYLE.woff2') format('woff2');
+  font-weight: normal;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'Pixeloid Mono';
+  src: url('../../assets/PixeloidMono.ttf') format('truetype');
+  font-weight: normal;
+  font-style: normal;
+}
+
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+body {
+  background: var(--bg-output);
+  color: var(--text-output);
+  font-family: 'Pixeloid Mono', 'Courier New', monospace;
+  font-size: 18px;
+  height: 100vh;
+  overflow: hidden;
+}
+
+#root {
+  height: 100vh;
+  background: var(--bg-output);
+  display: flex;
+  flex-direction: column;
+}

src/server/index.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Shrimp</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="./app.tsx"></script>
+  </body>
+</html>

src/server/server.tsx

@@ -0,0 +1,29 @@
+import index from './index.html'
+
+const server = Bun.serve({
+  port: process.env.PORT ? Number(process.env.PORT) : 3001,
+  routes: {
+    '/*': index,
+
+    '/api/hello': {
+      async GET(req) {
+        return Response.json({
+          message: 'Hello, world!',
+          method: 'GET',
+        })
+      },
+      async PUT(req) {
+        return Response.json({
+          message: 'Hello, world!',
+          method: 'PUT',
+        })
+      },
+    },
+  },
+  development: process.env.NODE_ENV !== 'production' && {
+    hmr: true,
+    console: true,
+  },
+})
+
+console.log(`🚀 Server running at ${server.url}`)

src/testSetup.ts

@@ -1,14 +1,33 @@
 import { expect } from 'bun:test'
-import { diffLines } from 'diff'
+import { parser } from '#parser/shrimp'
-import color from 'kleur'
+import { setGlobals } from '#parser/tokenizer'
-import { Scanner, TokenType, type Token } from '#parser/tokenizer2'
-import { parse, setGlobals } from '#parser/parser2'
-import { Tree } from '#parser/node'
 import { globals as prelude } from '#prelude'
+import { $ } from 'bun'
 import { assert, errorMessage } from '#utils/utils'
 import { Compiler } from '#compiler/compiler'
 import { run, VM } from 'reefvm'
-import { treeToString2, VMResultToValue } from '#utils/tree'
+import { treeToString, VMResultToValue } from '#utils/tree'
+
+const regenerateParser = async () => {
+  let generate = true
+  try {
+    const grammarStat = await Bun.file('./src/parser/shrimp.grammar').stat()
+    const tokenizerStat = await Bun.file('./src/parser/tokenizer.ts').stat()
+    const parserStat = await Bun.file('./src/parser/shrimp.ts').stat()
+
+    if (grammarStat.mtime <= parserStat.mtime && tokenizerStat.mtime <= parserStat.mtime) {
+      generate = false
+    }
+  } catch (e) {
+    console.error('Error checking or regenerating parser:', e)
+  } finally {
+    if (generate) {
+      await $`bun generate-parser`
+    }
+  }
+}
+
+await regenerateParser()
 
 // Type declaration for TypeScript
 declare module 'bun:test' {
@@ -18,9 +37,6 @@ declare module 'bun:test' {
     toFailParse(): T
     toEvaluateTo(expected: unknown, globals?: Record<string, any>): Promise<T>
     toFailEvaluation(): Promise<T>
-    toBeToken(expected: string): T
-    toMatchToken(typeOrValue: string, value?: string): T
-    toMatchTokens(...tokens: { type: string; value?: string }[]): T
   }
 }
 
@@ -30,8 +46,8 @@ expect.extend({
 
     const allGlobals = { ...prelude, ...(globals || {}) }
     setGlobals(Object.keys(allGlobals))
-    const tree = parse(received)
+    const tree = parser.parse(received)
-    const actual = treeToString2(tree, received)
+    const actual = treeToString(tree, received)
     const normalizedExpected = trimWhitespace(expected)
 
     try {
@@ -50,8 +66,7 @@ expect.extend({
     assert(typeof received === 'string', 'toFailParse can only be used with string values')
 
     try {
-      const node = parse(received)
+      const tree = parser.parse(received)
-      const tree = new Tree(node)
       let hasErrors = false
       tree.iterate({
         enter(n) {
@@ -68,7 +83,7 @@ expect.extend({
           pass: true,
         }
       } else {
-        const actual = treeToString2(node, received)
+        const actual = treeToString(tree, received)
         return {
           message: () => `Expected input to fail parsing, but it parsed successfully:\n${actual}`,
           pass: false,
@@ -129,109 +144,8 @@ expect.extend({
       }
     }
   },
-  toBeToken(received: unknown, expected: string) {
-    assert(typeof received === 'string', 'toBeToken can only be used with string values')
-
-    try {
-      const tokens = tokenize(received)
-      const value = tokens[0] as Token
-      const target = TokenType[expected as keyof typeof TokenType]
-
-      if (!value) {
-        return {
-          message: () => `Expected token type to be ${expected}, but got ${value}`,
-          pass: false,
-        }
-      }
-
-      return {
-        message: () => `Expected token type to be ${expected}, but got ${TokenType[value.type]}`,
-        pass: value.type === target,
-      }
-    } catch (error) {
-      return {
-        message: () => `Tokenization failed: ${errorMessage(error)}`,
-        pass: false,
-      }
-    }
-  },
-  toMatchToken(received: unknown, typeOrValue: string, value?: string) {
-    assert(typeof received === 'string', 'toMatchToken can only be used with string values')
-    const expectedValue = value ? value : typeOrValue
-    const expectedType = value ? typeOrValue : undefined
-
-    try {
-      const tokens = tokenize(received)
-      const token = tokens[0] as Token
-
-      if (!token) {
-        return {
-          message: () =>
-            `Expected token to be ${expectedValue.replaceAll('\n', '\\n')}, got ${token}`,
-          pass: false,
-        }
-      }
-
-      if (expectedType && TokenType[expectedType as keyof typeof TokenType] !== token.type) {
-        return {
-          message: () => `Expected token to be ${expectedType}, but got ${TokenType[token.type]}`,
-          pass: false,
-        }
-      }
-
-      return {
-        message: () =>
-          `Expected token to be ${expectedValue.replaceAll('\n', '\\n')}, but got ${token.value}`,
-        pass: token.value === expectedValue,
-      }
-    } catch (error) {
-      return {
-        message: () => `Tokenization failed: ${errorMessage(error)} `,
-        pass: false,
-      }
-    }
-  },
-  toMatchTokens(received: unknown, ...tokens: { type: string; value?: string }[]) {
-    assert(typeof received === 'string', 'toMatchTokens can only be used with string values')
-
-    try {
-      const result = tokenize(received).map((t) => toHumanToken(t))
-
-      if (result.length === 0 && tokens.length > 0) {
-        return {
-          message: () => `Expected tokens ${JSON.stringify(tokens)}, got nothing`,
-          pass: false,
-        }
-      }
-
-      const expected = JSON.stringify(tokens, null, 2)
-      const actual = JSON.stringify(result, null, 2)
-
-      return {
-        message: () => `Tokens don't match: \n\n${diff(actual, expected)}`,
-        pass: expected == actual,
-      }
-    } catch (error) {
-      return {
-        message: () => `Tokenization failed: ${errorMessage(error)} `,
-        pass: false,
-      }
-    }
-  },
 })
 
-const tokenize = (code: string): Token[] => {
-  const scanner = new Scanner()
-  return scanner.tokenize(code)
-}
-
-const toHumanToken = (tok: Token): { type: string; value?: string } => {
-  return {
-    type: TokenType[tok.type],
-    value: tok.value,
-  }
-}
-
 const trimWhitespace = (str: string): string => {
   const lines = str.split('\n').filter((line) => line.trim().length > 0)
   const firstLine = lines[0]
@@ -243,33 +157,10 @@ const trimWhitespace = (str: string): string => {
       if (!line.startsWith(leadingWhitespace)) {
         let foundWhitespace = line.match(/^(\s*)/)?.[1] || ''
         throw new Error(
-          `Line has inconsistent leading whitespace: "${line}"(found "${foundWhitespace}", expected "${leadingWhitespace}")`,
+          `Line has inconsistent leading whitespace: "${line}" (found "${foundWhitespace}", expected "${leadingWhitespace}")`
         )
       }
       return line.slice(leadingWhitespace.length)
     })
     .join('\n')
 }
-
-const diff = (a: string, b: string): string => {
-  const expected = a.trim()
-  const actual = b.trim()
-  const lines = []
-
-  if (expected !== actual) {
-    const changes = diffLines(actual, expected)
-    for (const part of changes) {
-      const sign = part.added ? '+' : part.removed ? '-' : ' '
-      let line = sign + part.value
-      if (part.added) {
-        line = color.green(line)
-      } else if (part.removed) {
-        line = color.red(line)
-      }
-
-      lines.push(line.endsWith('\n') || line.endsWith('\n\u001b[39m') ? line : line + '\n')
-    }
-  }
-
-  return lines.join('\n')
-}

src/tests/shrimp.test.ts

@@ -1,6 +1,6 @@
 import { describe } from 'bun:test'
 import { expect, test } from 'bun:test'
-import { Shrimp, runCode, compileCode, parseCode, bytecodeToString } from '..'
+import { Shrimp } from '..'
 
 describe('Shrimp', () => {
   test('allows running Shrimp code', async () => {
@@ -50,403 +50,4 @@ describe('Shrimp', () => {
     await shrimp.run('abc = nothing')
     expect(shrimp.get('abc')).toEqual('nothing')
   })
-
-  describe('set()', () => {
-    test('allows setting variables', async () => {
-      const shrimp = new Shrimp()
-
-      shrimp.set('foo', 42)
-      expect(shrimp.get('foo')).toEqual(42)
-
-      shrimp.set('bar', 'hello')
-      expect(shrimp.get('bar')).toEqual('hello')
-    })
-
-    test('set variables are accessible in code', async () => {
-      const shrimp = new Shrimp()
-
-      shrimp.set('x', 10)
-      shrimp.set('y', 20)
-
-      const result = await shrimp.run('x + y')
-      expect(result).toEqual(30)
-    })
-
-    test('allows setting functions', async () => {
-      const shrimp = new Shrimp()
-
-      shrimp.set('double', (n: number) => n * 2)
-
-      const result = await shrimp.run('double 21')
-      expect(result).toEqual(42)
-    })
-
-    test('overwrites existing variables', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run('x = 100')
-      expect(shrimp.get('x')).toEqual(100)
-
-      shrimp.set('x', 200)
-      expect(shrimp.get('x')).toEqual(200)
-    })
-  })
-
-  describe('has()', () => {
-    test('returns true for existing variables', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run('x = 5')
-      expect(shrimp.has('x')).toEqual(true)
-    })
-
-    test('returns false for non-existing variables', () => {
-      const shrimp = new Shrimp()
-
-      expect(shrimp.has('nonexistent')).toEqual(false)
-    })
-
-    test('returns true for globals', () => {
-      const shrimp = new Shrimp({ myGlobal: 42 })
-
-      expect(shrimp.has('myGlobal')).toEqual(true)
-    })
-
-    test('returns true for prelude functions', () => {
-      const shrimp = new Shrimp()
-
-      expect(shrimp.has('echo')).toEqual(true)
-      expect(shrimp.has('type')).toEqual(true)
-    })
-  })
-
-  describe('call()', () => {
-    test('calls Shrimp functions with positional args', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run(`add = do x y:
-        x + y
-      end`)
-
-      const result = await shrimp.call('add', 5, 10)
-      expect(result).toEqual(15)
-    })
-
-    test('calls Shrimp functions with named args', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run(`greet = do name:
-        str.join [ 'Hello ' name ] ''
-      end`)
-
-      const result = await shrimp.call('greet', { name: 'World' })
-      expect(result).toEqual('Hello World')
-    })
-
-    test('calls native functions', async () => {
-      const shrimp = new Shrimp()
-
-      shrimp.set('multiply', (a: number, b: number) => a * b)
-
-      const result = await shrimp.call('multiply', 6, 7)
-      expect(result).toEqual(42)
-    })
-
-    test('calls prelude functions', async () => {
-      const shrimp = new Shrimp()
-
-      const result = await shrimp.call('type', 42)
-      expect(result).toEqual('number')
-    })
-
-    test('calls async functions', async () => {
-      const shrimp = new Shrimp()
-
-      shrimp.set('fetchData', async () => {
-        return await Promise.resolve('async data')
-      })
-
-      const result = await shrimp.call('fetchData')
-      expect(result).toEqual('async data')
-    })
-  })
-
-  describe('compile()', () => {
-    test('compiles code to bytecode', () => {
-      const shrimp = new Shrimp()
-
-      const bytecode = shrimp.compile('x = 5')
-
-      expect(bytecode).toHaveProperty('instructions')
-      expect(bytecode).toHaveProperty('constants')
-      expect(bytecode).toHaveProperty('labels')
-      expect(bytecode.instructions.length).toBeGreaterThan(0)
-    })
-
-    test('respects globals when compiling', () => {
-      const shrimp = new Shrimp({ customGlobal: 42 })
-
-      const bytecode = shrimp.compile('x = customGlobal')
-      expect(bytecode.instructions.length).toBeGreaterThan(0)
-    })
-
-    test('compiled bytecode can be run', async () => {
-      const shrimp = new Shrimp()
-
-      const bytecode = shrimp.compile('2 * 21')
-      const result = await shrimp.run(bytecode)
-
-      expect(result).toEqual(42)
-    })
-  })
-
-  describe('parse()', () => {
-    test('parses code to syntax tree', () => {
-      const shrimp = new Shrimp()
-
-      const tree = shrimp.parse('x = 5')
-
-      expect(tree).toHaveProperty('length')
-      expect(tree).toHaveProperty('cursor')
-      expect(tree.length).toBeGreaterThan(0)
-    })
-
-    test('respects globals when parsing', () => {
-      const shrimp = new Shrimp({ myVar: 42 })
-
-      const tree = shrimp.parse('x = myVar + 10')
-
-      // Should parse without errors
-      expect(tree).toHaveProperty('length')
-      expect(tree.length).toBeGreaterThan(0)
-    })
-
-    test('parses function definitions', () => {
-      const shrimp = new Shrimp()
-
-      const tree = shrimp.parse(`add = do x y:
-        x + y
-      end`)
-
-      expect(tree.length).toBeGreaterThan(0)
-    })
-  })
-
-  describe('get()', () => {
-    test('returns null for undefined variables', () => {
-      const shrimp = new Shrimp()
-
-      expect(shrimp.get('undefined')).toEqual(null)
-    })
-
-    test('returns values from code execution', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run('x = 42')
-      expect(shrimp.get('x')).toEqual(42)
-    })
-
-    test('returns arrays', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run('arr = [1 2 3]')
-      expect(shrimp.get('arr')).toEqual([1, 2, 3])
-    })
-
-    test('returns dicts', async () => {
-      const shrimp = new Shrimp()
-
-      await shrimp.run('dict = [a=1 b=2]')
-      expect(shrimp.get('dict')).toEqual({ a: 1, b: 2 })
-    })
-  })
-
-  describe('running bytecode directly', () => {
-    test('can run pre-compiled bytecode', async () => {
-      const shrimp = new Shrimp()
-
-      const bytecode = shrimp.compile('x = 100')
-      const result = await shrimp.run(bytecode)
-
-      expect(result).toEqual(100)
-      expect(shrimp.get('x')).toEqual(100)
-    })
-
-    test('maintains state across bytecode runs', async () => {
-      const shrimp = new Shrimp()
-
-      const bytecode1 = shrimp.compile('x = 10')
-      const bytecode2 = shrimp.compile('x + 5')
-
-      await shrimp.run(bytecode1)
-      const result = await shrimp.run(bytecode2)
-
-      expect(result).toEqual(15)
-    })
-  })
-})
-
-describe('Functional API', () => {
-  describe('runCode()', () => {
-    test('runs code and returns result', async () => {
-      const result = await runCode('1 + 1')
-      expect(result).toEqual(2)
-    })
-
-    test('works with globals', async () => {
-      const result = await runCode('greet', { greet: () => 'hello' })
-      expect(result).toEqual('hello')
-    })
-
-    test('has access to prelude', async () => {
-      const result = await runCode('type 42')
-      expect(result).toEqual('number')
-    })
-
-    test('returns null for empty code', async () => {
-      const result = await runCode('')
-      expect(result).toEqual(null)
-    })
-  })
-
-  describe('compileCode()', () => {
-    test('compiles code to bytecode', () => {
-      const bytecode = compileCode('x = 5')
-
-      expect(bytecode).toHaveProperty('instructions')
-      expect(bytecode).toHaveProperty('constants')
-      expect(bytecode.instructions.length).toBeGreaterThan(0)
-    })
-
-    test('respects globals', () => {
-      const bytecode = compileCode('x = myGlobal', { myGlobal: 42 })
-
-      expect(bytecode.instructions.length).toBeGreaterThan(0)
-    })
-
-    test('compiled bytecode is usable', async () => {
-      const bytecode = compileCode('21 * 2')
-      const result = await runCode('21 * 2')
-
-      expect(result).toEqual(42)
-    })
-  })
-
-  describe('parseCode()', () => {
-    test('parses code to syntax tree', () => {
-      const tree = parseCode('x = 5')
-
-      expect(tree).toHaveProperty('length')
-      expect(tree.length).toBeGreaterThan(0)
-    })
-
-    test('respects globals', () => {
-      const tree = parseCode('x = myGlobal', { myGlobal: 42 })
-
-      expect(tree.length).toBeGreaterThan(0)
-    })
-
-    test('handles complex expressions', () => {
-      const tree = parseCode(`add = do x y:
-        x + y
-      end
-      result = add 5 10`)
-
-      expect(tree.length).toBeGreaterThan(0)
-    })
-  })
-
-  describe('bytecodeToString()', () => {
-    test('converts bytecode to human-readable format', () => {
-      const bytecode = compileCode('x = 42')
-      const str = bytecodeToString(bytecode)
-
-      expect(typeof str).toEqual('string')
-      expect(str.length).toBeGreaterThan(0)
-    })
-
-    test('shows instructions', () => {
-      const bytecode = compileCode('1 + 1')
-      const str = bytecodeToString(bytecode)
-
-      // Should contain some opcodes
-      expect(str).toContain('PUSH')
-    })
-  })
-})
-
-describe('Integration tests', () => {
-  test('complex REPL-like workflow', async () => {
-    const shrimp = new Shrimp()
-
-    // Define a function
-    await shrimp.run(`double = do x:
-      x * 2
-    end`)
-    expect(shrimp.has('double')).toEqual(true)
-
-    // Use the function
-    const result1 = await shrimp.run('double 21')
-    expect(result1).toEqual(42)
-
-    // Call it from TypeScript
-    const result2 = await shrimp.call('double', 50)
-    expect(result2).toEqual(100)
-
-    // Define another function using the first
-    await shrimp.run(`quadruple = do x:
-      double (double x)
-    end`)
-
-    const result3 = await shrimp.run('quadruple 5')
-    expect(result3).toEqual(20)
-  })
-
-  test('mixing native and Shrimp functions', async () => {
-    const shrimp = new Shrimp({
-      log: (msg: string) => `Logged: ${msg}`,
-      multiply: (a: number, b: number) => a * b,
-    })
-
-    await shrimp.run(`greet = do name:
-      log name
-    end`)
-
-    const result1 = await shrimp.run('greet Alice')
-    expect(result1).toEqual('Logged: Alice')
-
-    await shrimp.run(`calc = do x:
-      multiply x 3
-    end`)
-
-    const result2 = await shrimp.run('calc 7')
-    expect(result2).toEqual(21)
-  })
-
-  test('working with arrays and dicts', async () => {
-    const shrimp = new Shrimp()
-
-    await shrimp.run('nums = [1 2 3 4 5]')
-    expect(shrimp.get('nums')).toEqual([1, 2, 3, 4, 5])
-
-    await shrimp.run("config = [host='localhost' port=3000]")
-    expect(shrimp.get('config')).toEqual({ host: 'localhost', port: 3000 })
-
-    const result = await shrimp.run('length nums')
-    expect(result).toEqual(5)
-  })
-
-  test('compile once, run multiple times', async () => {
-    const bytecode = compileCode('x * 2')
-
-    const shrimp1 = new Shrimp()
-    shrimp1.set('x', 10)
-    const result1 = await shrimp1.run(bytecode)
-    expect(result1).toEqual(20)
-
-    const shrimp2 = new Shrimp()
-    shrimp2.set('x', 100)
-    const result2 = await shrimp2.run(bytecode)
-    expect(result2).toEqual(200)
-  })
 })

src/utils/signal.ts

@@ -0,0 +1,68 @@
+/**
+ * How to use a Signal:
+ *
+ * Create a signal with primitives:
+ *    const nameSignal = new Signal<string>()
+ *    const countSignal = new Signal<number>()
+ *
+ * Create a signal with objects:
+ *    const chatSignal = new Signal<{ username: string, message: string }>()
+ *
+ * Create a signal with no data (void):
+ *    const clickSignal = new Signal<void>()
+ *    const clickSignal2 = new Signal()  // Defaults to void
+ *
+ * Connect to the signal:
+ *    const disconnect = chatSignal.connect((data) => {
+ *      const {username, message} = data;
+ *      console.log(`${username} said "${message}"`);
+ *    })
+ *
+ * Emit a signal:
+ *    nameSignal.emit("Alice")
+ *    countSignal.emit(42)
+ *    chatSignal.emit({ username: "Chad", message: "Hey everyone, how's it going?" });
+ *    clickSignal.emit()  // No argument for void signals
+ *
+ * Forward a signal:
+ *    const relaySignal = new Signal<{ username: string, message: string }>()
+ *    const disconnectRelay = chatSignal.connect(relaySignal)
+ *    // Now, when chatSignal emits, relaySignal will also emit the same data
+ *
+ * Disconnect a single listener:
+ *    disconnect(); // The disconnect function is returned when you connect to a signal
+ *
+ * Disconnect all listeners:
+ *    chatSignal.disconnect()
+ */
+
+export class Signal<T = void> {
+  private listeners: Array<(data: T) => void> = []
+
+  connect(listenerOrSignal: Signal<T> | ((data: T) => void)) {
+    let listener: (data: T) => void
+
+    // If it is a signal, forward the data to the signal
+    if (listenerOrSignal instanceof Signal) {
+      listener = (data: T) => listenerOrSignal.emit(data)
+    } else {
+      listener = listenerOrSignal
+    }
+
+    this.listeners.push(listener)
+
+    return () => {
+      this.listeners = this.listeners.filter((l) => l !== listener)
+    }
+  }
+
+  emit(data: T) {
+    for (const listener of this.listeners) {
+      listener(data)
+    }
+  }
+
+  disconnect() {
+    this.listeners = []
+  }
+}

src/utils/tree.ts

@@ -1,50 +1,5 @@
 import { Tree, TreeCursor } from '@lezer/common'
 import { type Value, fromValue } from 'reefvm'
-import { SyntaxNode } from '#parser/node'
-
-const nodeToString = (node: SyntaxNode, input: string, depth = 0): string => {
-  const indent = '  '.repeat(depth)
-  const text = input.slice(node.from, node.to)
-  const nodeName = node.name
-
-  if (node.firstChild) {
-    return `${indent}${nodeName}`
-  } else {
-    // Only strip quotes from whole String nodes (legacy DoubleQuote), not StringFragment/EscapeSeq/CurlyString
-    let cleanText = nodeName === 'String' ? text.slice(1, -1) : text
-    if (cleanText === ' ') cleanText = '(space)'
-    return cleanText ? `${indent}${nodeName} ${cleanText}` : `${indent}${nodeName}`
-  }
-}
-
-export const treeToString2 = (tree: SyntaxNode, input: string, depth = 0): string => {
-  let lines = []
-  let node: SyntaxNode | null = tree
-
-  if (node.name === 'Program') node = node.firstChild
-
-  while (node) {
-    // If this node is an error, print ⚠ instead of its content
-    if (node.isError && !node.firstChild) {
-      lines.push('  '.repeat(depth) + '⚠')
-    } else {
-      lines.push(nodeToString(node, input, depth))
-
-      if (node.firstChild) {
-        lines.push(treeToString2(node.firstChild, input, depth + 1))
-      }
-
-      // If this node has an error, add ⚠ after its children
-      if (node.isError && node.firstChild) {
-        lines.push('  '.repeat(depth === 0 ? 0 : depth + 1) + '⚠')
-      }
-    }
-
-    node = node.nextSibling
-  }
-
-  return lines.join('\n')
-}
 
 export const treeToString = (tree: Tree, input: string): string => {
   const lines: string[] = []

src/utils/utils.tsx

@@ -136,12 +136,3 @@ export const asciiEscapeToHtml = (str: string): HtmlEscapedString => {
 
   return result as HtmlEscapedString
 }
-
-export const isDebug = (): boolean => {
-  if (typeof process !== 'undefined' && process.env) {
-    return !!process.env.DEBUG
-  }
-  return false
-}
-
-export const runningInBrowser = typeof window !== 'undefined'