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Dollar Dot #49

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defunkt merged 3 commits from dollar-dot into main 2025-11-10 15:13:31 +00:00
Conversation 0 Commits 3 Files Changed 14 +135 -62
11 changed files with 135 additions and 62 deletions
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3
bin/repl
View File

@ -7,6 +7,9 @@ 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']

8
bin/shrimp
View File

@ -1,13 +1,17 @@
#!/usr/bin/env bun
import { colors } from '../src/prelude'
import { colors, globals as prelude } from '../src/prelude'
import { treeToString } from '../src/utils/tree'
import { runCode, runFile, compileFile, parseCode } from '../src'
import { resolve } from 'path'
import { bytecodeToString } from 'reefvm'
import { readFileSync } from 'fs'
import { spawn } from 'child_process'
import { join } from 'path'
const idx = Bun.argv.indexOf('--')
prelude.$.args = idx >= 0 ? Bun.argv.slice(idx + 1) : []
function showHelp() {
console.log(`${colors.bright}${colors.magenta}🦐 Shrimp${colors.reset} is a scripting language in a shell.
@ -149,10 +153,12 @@ 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)
}

2
src/compiler/utils.ts
View File

@ -293,7 +293,7 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
)
}
if (object.type.id !== terms.IdentifierBeforeDot) {
if (object.type.id !== terms.IdentifierBeforeDot && object.type.id !== terms.Dollar) {
throw new CompilerError(
`DotGet object must be an IdentifierBeforeDot, got ${object.type.name}`,
object.from,

12
src/index.ts
View File

@ -4,7 +4,7 @@ import { type Tree } from '@lezer/common'
import { Compiler } from '#compiler/compiler'
import { parser } from '#parser/shrimp'
import { globals as parserGlobals, setGlobals as setParserGlobals } from '#parser/tokenizer'
import { globals as shrimpGlobals } from '#prelude'
import { globals as prelude } from '#prelude'
export { Compiler } from '#compiler/compiler'
export { parser } from '#parser/shrimp'
@ -19,7 +19,7 @@ export class Shrimp {
constructor(globals?: Record<string, any>) {
const emptyBytecode = { instructions: [], constants: [], labels: new Map() }
this.vm = new VM(emptyBytecode, Object.assign({}, shrimpGlobals, globals ?? {}))
this.vm = new VM(emptyBytecode, Object.assign({}, prelude, globals ?? {}))
this.globals = globals
}
@ -53,7 +53,7 @@ export class Shrimp {
let bytecode
if (typeof code === 'string') {
const compiler = new Compiler(code, Object.keys(Object.assign({}, shrimpGlobals, this.globals ?? {}, locals ?? {})))
const compiler = new Compiler(code, Object.keys(Object.assign({}, prelude, this.globals ?? {}, locals ?? {})))
bytecode = compiler.bytecode
} else {
bytecode = code
@ -79,7 +79,7 @@ export async function runCode(code: string, globals?: Record<string, any>): Prom
}
export async function runBytecode(bytecode: Bytecode, globals?: Record<string, any>): Promise<any> {
const vm = new VM(bytecode, Object.assign({}, shrimpGlobals, globals))
const vm = new VM(bytecode, Object.assign({}, prelude, globals))
await vm.run()
return vm.stack.length ? fromValue(vm.stack[vm.stack.length - 1]!, vm) : null
}
@ -90,7 +90,7 @@ export function compileFile(path: string, globals?: Record<string, any>): Byteco
}
export function compileCode(code: string, globals?: Record<string, any>): Bytecode {
const globalNames = [...Object.keys(shrimpGlobals), ...(globals ? Object.keys(globals) : [])]
const globalNames = [...Object.keys(prelude), ...(globals ? Object.keys(globals) : [])]
const compiler = new Compiler(code, globalNames)
return compiler.bytecode
}
@ -102,7 +102,7 @@ export function parseFile(path: string, globals?: Record<string, any>): Tree {
export function parseCode(code: string, globals?: Record<string, any>): Tree {
const oldGlobals = [...parserGlobals]
const globalNames = [...Object.keys(shrimpGlobals), ...(globals ? Object.keys(globals) : [])]
const globalNames = [...Object.keys(prelude), ...(globals ? Object.keys(globals) : [])]
setParserGlobals(globalNames)
const result = parser.parse(code)

6
src/parser/shrimp.grammar
View File

@ -29,6 +29,7 @@
rightParen { ")" }
colon[closedBy="end", @name="colon"] { ":" }
Underscore { "_" }
Dollar { "$" }
Regex { "//" (![/\\\n[] | "\\" ![\n] | "[" (![\n\\\]] | "\\" ![\n])* "]")+ ("//" $[gimsuy]*)? } // Stolen from the lezer JavaScript grammar
"|"[@name=operator]
}
@ -239,7 +240,8 @@ expression {
@skip {} {
DotGet {
IdentifierBeforeDot dot (DotGet | Number | Identifier | ParenExpr)
IdentifierBeforeDot dot (DotGet | Number | Identifier | ParenExpr) |
Dollar dot (DotGet | Number | Identifier | ParenExpr)
}
String {
@ -254,7 +256,7 @@ stringContent {
}
Interpolation {
"$" Identifier |
"$" FunctionCallOrIdentifier |
"$" ParenExpr
}

69
src/parser/shrimp.terms.ts
View File

@ -37,42 +37,43 @@ export const
Program = 35,
PipeExpr = 36,
WhileExpr = 38,
keyword = 83,
keyword = 84,
ConditionalOp = 40,
ParenExpr = 41,
FunctionCallWithNewlines = 42,
DotGet = 43,
Number = 44,
PositionalArg = 45,
FunctionDef = 46,
Params = 47,
NamedParam = 48,
NamedArgPrefix = 49,
String = 50,
StringFragment = 51,
Interpolation = 52,
EscapeSeq = 53,
DoubleQuote = 54,
Boolean = 55,
Null = 56,
colon = 57,
CatchExpr = 58,
Block = 60,
FinallyExpr = 61,
Underscore = 64,
NamedArg = 65,
IfExpr = 66,
FunctionCall = 68,
ElseIfExpr = 69,
ElseExpr = 71,
FunctionCallOrIdentifier = 72,
BinOp = 73,
Regex = 74,
Dict = 75,
Array = 76,
FunctionCallWithBlock = 77,
TryExpr = 78,
Throw = 80,
Import = 82,
CompoundAssign = 84,
Assign = 85
Dollar = 45,
PositionalArg = 46,
FunctionDef = 47,
Params = 48,
NamedParam = 49,
NamedArgPrefix = 50,
String = 51,
StringFragment = 52,
Interpolation = 53,
FunctionCallOrIdentifier = 54,
EscapeSeq = 55,
DoubleQuote = 56,
Boolean = 57,
Null = 58,
colon = 59,
CatchExpr = 60,
Block = 62,
FinallyExpr = 63,
Underscore = 66,
NamedArg = 67,
IfExpr = 68,
FunctionCall = 70,
ElseIfExpr = 71,
ElseExpr = 73,
BinOp = 74,
Regex = 75,
Dict = 76,
Array = 77,
FunctionCallWithBlock = 78,
TryExpr = 79,
Throw = 81,
Import = 83,
CompoundAssign = 85,
Assign = 86

20
src/parser/shrimp.ts
View File

@ -4,24 +4,24 @@ import {operatorTokenizer} from "./operatorTokenizer"
import {tokenizer, specializeKeyword} from "./tokenizer"
import {trackScope} from "./parserScopeContext"
import {highlighting} from "./highlight"
const spec_Identifier = {__proto__:null,while:78, null:112, catch:118, finally:124, end:126, if:134, else:140, try:158, throw:162, import:166}
const spec_Identifier = {__proto__:null,while:78, null:116, catch:122, finally:128, end:130, if:138, else:144, try:160, throw:164, import:168}
export const parser = LRParser.deserialize({
version: 14,
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tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO#`~~", 11)],
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tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO#a~~", 11)],
topRules: {"Program":[0,35]},
specialized: [{term: 28, get: (value: any, stack: any) => (specializeKeyword(value, stack) << 1), external: specializeKeyword},{term: 28, get: (value: keyof typeof spec_Identifier) => spec_Identifier[value] || -1}],
tokenPrec: 2373
tokenPrec: 2428
})

9
src/parser/tests/dot-get.test.ts
View File

@ -447,5 +447,14 @@ end`).toMatchTree(`
Number 1
Identifier b
`)
test('parses $.pid just fine', () => {
expect(`$.pid`).toMatchTree(`
FunctionCallOrIdentifier
DotGet
Dollar $
Identifier pid
`)
})
})
})

9
src/parser/tests/strings.test.ts
View File

@ -8,7 +8,8 @@ describe('string interpolation', () => {
String
StringFragment ${'hello '}
Interpolation
Identifier name
FunctionCallOrIdentifier
Identifier name
`)
})
@ -44,7 +45,8 @@ describe('string interpolation', () => {
String
StringFragment x/
Interpolation
Identifier y
FunctionCallOrIdentifier
Identifier y
StringFragment /z
`)
})
@ -122,7 +124,8 @@ describe('string escape sequences', () => {
String
StringFragment value:
Interpolation
Identifier x
FunctionCallOrIdentifier
Identifier x
EscapeSeq \\n
`)
})

16
src/prelude/index.ts
View File

@ -1,5 +1,6 @@
// The prelude creates all the builtin Shrimp functions.
import { join, resolve } from 'path'
import {
type Value, type VM, toValue,
extractParamInfo, isWrapped, getOriginalFunction,
@ -22,6 +23,20 @@ export const globals = {
math,
str,
// shrimp runtime info
$: {
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(...args.map(a => {
@ -66,7 +81,6 @@ export const globals = {
},
// env
args: Bun.argv.slice(1),
exit: (num: number) => process.exit(num ?? 0),
// type predicates

43
src/prelude/tests/info.test.ts
View File

@ -80,15 +80,15 @@ describe('introspection', () => {
describe('environment', () => {
test('args is an array', async () => {
await expect(`array? args`).toEvaluateTo(true, globals)
await expect(`array? $.args`).toEvaluateTo(true, globals)
})
test('args can be accessed', async () => {
await expect(`type args`).toEvaluateTo('array', globals)
await expect(`type $.args`).toEvaluateTo('array', globals)
})
test('', async () => {
await expect(`list.first args | str.ends-with? 'shrimp.test.ts'`).toEvaluateTo(true)
test('argv includes more than just the args', async () => {
await expect(`list.first $.argv | str.ends-with? 'shrimp.test.ts'`).toEvaluateTo(true)
})
})
@ -103,3 +103,38 @@ describe('ref', () => {
expect(`rnd = ref math.random; rnd | type`).toEvaluateTo('number')
expect(`rnd = ref math.random; ref rnd | type`).toEvaluateTo('native')
})
describe('$ global dictionary', () => {
test('$.args is an array', async () => {
await expect(`$.args | array?`).toEvaluateTo(true, globals)
})
test('$.args can be accessed', async () => {
await expect(`$.args | type`).toEvaluateTo('array', globals)
})
test('$.script.name is a string', async () => {
await expect(`$.script.name | string?`).toEvaluateTo(true, globals)
})
test('$.script.path is a string', async () => {
await expect(`$.script.path | string?`).toEvaluateTo(true, globals)
})
test('$.env is a dict', async () => {
await expect(`$.env | dict?`).toEvaluateTo(true, globals)
})
test('$.pid is a number', async () => {
await expect(`$.pid | number?`).toEvaluateTo(true, globals)
await expect(`$.pid > 0`).toEvaluateTo(true, globals)
})
test('$.cwd is a string', async () => {
await expect(`$.cwd | string?`).toEvaluateTo(true, globals)
})
test('$.cwd returns current working directory', async () => {
await expect(`$.cwd`).toEvaluateTo(process.cwd(), globals)
})
})