Add ?? and ??= operators

Reviewed-on: #36

bun.lock

@@ -62,7 +62,7 @@
 
     "hono": ["hono@4.10.4", "", {}, "sha512-YG/fo7zlU3KwrBL5vDpWKisLYiM+nVstBQqfr7gCPbSYURnNEP9BDxEMz8KfsDR9JX0lJWDRNc6nXX31v7ZEyg=="],
 
-    "reefvm": ["reefvm@git+https://git.nose.space/defunkt/reefvm#d7a971db24aea5ddcaae2c18ce9f10dab793db19", { "peerDependencies": { "typescript": "^5" } }, "d7a971db24aea5ddcaae2c18ce9f10dab793db19"],
+    "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=="],
 

package.json

@@ -10,7 +10,7 @@
     "repl": "bun generate-parser && bun bin/repl",
     "update-reef": "rm -rf ~/.bun/install/cache/ && rm bun.lock && bun update reefvm",
     "cli:install": "ln -s \"$(pwd)/bin/shrimp\" ~/.bun/bin/shrimp",
-    "cli:remove": "rm ~/.bun/bin/shrimp",
+    "cli:remove": "rm ~/.bun/bin/shrimp"
   },
   "dependencies": {
     "@codemirror/view": "^6.38.3",
@@ -31,4 +31,4 @@
     "singleQuote": true,
     "printWidth": 100
   }
-}
+}

src/compiler/compiler.ts

@@ -51,6 +51,7 @@ function processEscapeSeq(escapeSeq: string): string {
 
 export class Compiler {
   instructions: ProgramItem[] = []
+  labelCount = 0
   fnLabelCount = 0
   ifLabelCount = 0
   tryLabelCount = 0
@@ -105,11 +106,21 @@ export class Compiler {
 
     switch (node.type.id) {
       case terms.Number:
-        const number = Number(value)
+        // Handle sign prefix for hex and binary literals
-        if (Number.isNaN(number))
+        // Number() doesn't parse '-0xFF' or '+0xFF' correctly
+        let numberValue: number
+        if (value.startsWith('-') && (value.includes('0x') || value.includes('0b'))) {
+          numberValue = -Number(value.slice(1))
+        } else if (value.startsWith('+') && (value.includes('0x') || value.includes('0b'))) {
+          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`, number]]
+        return [[`PUSH`, numberValue]]
 
       case terms.String: {
         const { parts, hasInterpolation } = getStringParts(node, input)
@@ -232,6 +243,24 @@ 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)
         }
@@ -274,13 +303,31 @@ export class Compiler {
         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)
 
-        // will throw if undefined
+        // Special handling for ??= since it needs conditional evaluation
-        instructions.push(['LOAD', identifierName])
+        if (opValue === '??=') {
+          instructions.push(['LOAD', identifierName])
 
+          const rightInstructions = this.#compileNode(right, input)
+
+          instructions.push(['DUP'])
+          instructions.push(['PUSH', null])
+          instructions.push(['NEQ'])
+          instructions.push(['JUMP_IF_TRUE', rightInstructions.length + 1])
+          instructions.push(['POP'])
+          instructions.push(...rightInstructions)
+
+          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'])
@@ -367,7 +414,29 @@ export class Compiler {
 
       case terms.FunctionCallOrIdentifier: {
         if (node.firstChild?.type.id === terms.DotGet) {
-          return this.#compileNode(node.firstChild, input)
+          const instructions: ProgramItem[] = []
+          const callLabel = `.call_dotget_${++this.labelCount}`
+          const afterLabel = `.after_dotget_${++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]]
@@ -587,6 +656,18 @@ export class Compiler {
 
             break
 
+          case '??':
+            // Nullish coalescing: return left if not null, else right
+            instructions.push(...leftInstructions)
+            instructions.push(['DUP'])
+            instructions.push(['PUSH', null])
+            instructions.push(['NEQ'])
+            instructions.push(['JUMP_IF_TRUE', rightInstructions.length + 1])
+            instructions.push(['POP'])
+            instructions.push(...rightInstructions)
+
+            break
+
           default:
             throw new CompilerError(`Unsupported conditional operator: ${opValue}`, op.from, op.to)
         }

src/compiler/tests/bitwise.test.ts

@@ -0,0 +1,178 @@
+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

@@ -110,7 +110,10 @@ describe('compiler', () => {
   })
 
   test('function call with no args', () => {
-    expect(`bloop = do: 'bloop' end; bloop`).toEvaluateTo('bloop')
+    expect(`bloop = do: 'bleep' end; bloop`).toEvaluateTo('bleep')
+    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', () => {
@@ -298,6 +301,23 @@ 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'])
@@ -313,3 +333,118 @@ describe('default params', () => {
     ).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)
+  })
+})

src/compiler/tests/literals.test.ts

@@ -1,6 +1,44 @@
 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('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 and binary', () => {
+    expect('-0xFF').toEvaluateTo(-255)
+    expect('-0b1010').toEvaluateTo(-10)
+  })
+
+  test('positive prefix', () => {
+    expect('+0xFF').toEvaluateTo(255)
+    expect('+0b110').toEvaluateTo(6)
+    expect('+42').toEvaluateTo(42)
+  })
+})
+
 describe('array literals', () => {
   test('work with numbers', () => {
     expect('[1 2 3]').toEvaluateTo([1, 2, 3])

src/parser/operatorTokenizer.ts

@@ -5,18 +5,28 @@ type Operator = { str: string; tokenName: keyof typeof terms }
 const operators: Array<Operator> = [
   { str: 'and', tokenName: 'And' },
   { str: 'or', tokenName: 'Or' },
+  { str: 'band', tokenName: 'Band' },
+  { str: 'bor', tokenName: 'Bor' },
+  { str: 'bxor', tokenName: 'Bxor' },
+  { str: '>>>', tokenName: 'Ushr' },  // Must come before >>
+  { str: '>>', tokenName: 'Shr' },
+  { str: '<<', tokenName: 'Shl' },
   { str: '>=', tokenName: 'Gte' },
   { str: '<=', tokenName: 'Lte' },
   { str: '!=', tokenName: 'Neq' },
   { str: '==', tokenName: 'EqEq' },
 
   // Compound assignment operators (must come before single-char operators)
+  { str: '??=', tokenName: 'NullishEq' },
   { str: '+=', tokenName: 'PlusEq' },
   { str: '-=', tokenName: 'MinusEq' },
   { str: '*=', tokenName: 'StarEq' },
   { str: '/=', tokenName: 'SlashEq' },
   { str: '%=', tokenName: 'ModuloEq' },
 
+  // Nullish coalescing (must come before it could be mistaken for other tokens)
+  { str: '??', tokenName: 'NullishCoalesce' },
+
   // Single-char operators
   { str: '*', tokenName: 'Star' },
   { str: '=', tokenName: 'Eq' },

src/parser/shrimp.grammar

@@ -6,14 +6,18 @@
 
 @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 }
+@external tokens operatorTokenizer from "./operatorTokenizer" { Star, Slash, Plus, Minus, And, Or, Eq, EqEq, Neq, Lt, Lte, Gt, Gte, Modulo, PlusEq, MinusEq, StarEq, SlashEq, ModuloEq, Band, Bor, Bxor, Shl, Shr, Ushr, NullishCoalesce, NullishEq }
 
 @tokens {
   @precedence { Number Regex }
 
   StringFragment { !['\\$]+ }
-  NamedArgPrefix { $[a-z-]+ "=" }
+  NamedArgPrefix { $[a-z] $[a-z0-9-]* "=" }
-  Number { ("-" | "+")? $[0-9]+ ('.' $[0-9]+)? }
+  Number {
+    ("-" | "+")? "0x" $[0-9a-fA-F]+ |
+    ("-" | "+")? "0b" $[01]+ |
+    ("-" | "+")? $[0-9]+ ("_"? $[0-9]+)* ('.' $[0-9]+ ("_"? $[0-9]+)*)?
+  }
   Boolean { "true" | "false" }
   newlineOrSemicolon { "\n" | ";" }
   eof { @eof }
@@ -44,10 +48,13 @@ null { @specialize[@name=Null]<Identifier, "null"> }
   pipe @left,
   or @left,
   and @left,
+  nullish @left,
   comparison @left,
   multiplicative @left,
   additive @left,
-  call
+  bitwise @left,
+  call,
+  functionWithNewlines
 }
 
 item {
@@ -160,7 +167,8 @@ ConditionalOp {
   expression !comparison Gt expression |
   expression !comparison Gte expression |
   (expression | ConditionalOp) !and And (expression | ConditionalOp) |
-  (expression | ConditionalOp) !or Or (expression | ConditionalOp)
+  (expression | ConditionalOp) !or Or (expression | ConditionalOp) |
+  (expression | ConditionalOp) !nullish NullishCoalesce (expression | ConditionalOp)
 }
 
 Params {
@@ -176,7 +184,7 @@ Assign {
 }
 
 CompoundAssign {
-  AssignableIdentifier (PlusEq | MinusEq | StarEq | SlashEq | ModuloEq) consumeToTerminator
+  AssignableIdentifier (PlusEq | MinusEq | StarEq | SlashEq | ModuloEq | NullishEq) consumeToTerminator
 }
 
 BinOp {
@@ -184,11 +192,31 @@ BinOp {
   (expression | BinOp) !multiplicative Star (expression | BinOp) |
   (expression | BinOp) !multiplicative Slash (expression | BinOp) |
   (expression | BinOp) !additive Plus (expression | BinOp) |
-  (expression | BinOp) !additive Minus (expression | BinOp)
+  (expression | BinOp) !additive Minus (expression | BinOp) |
+  (expression | BinOp) !bitwise Band (expression | BinOp) |
+  (expression | BinOp) !bitwise Bor (expression | BinOp) |
+  (expression | BinOp) !bitwise Bxor (expression | BinOp) |
+  (expression | BinOp) !bitwise Shl (expression | BinOp) |
+  (expression | BinOp) !bitwise Shr (expression | BinOp) |
+  (expression | BinOp) !bitwise Ushr (expression | BinOp)
 }
 
 ParenExpr {
-  leftParen (IfExpr | ambiguousFunctionCall | BinOp | expressionWithoutIdentifier | ConditionalOp | PipeExpr | FunctionDef) rightParen
+  leftParen newlineOrSemicolon* (
+    FunctionCallWithNewlines |
+    IfExpr |
+    ambiguousFunctionCall |
+    BinOp newlineOrSemicolon* |
+    expressionWithoutIdentifier |
+    ConditionalOp newlineOrSemicolon* |
+    PipeExpr |
+    FunctionDef
+  )
+  rightParen
+}
+
+FunctionCallWithNewlines[@name=FunctionCall] {
+  (DotGet | Identifier | ParenExpr) newlineOrSemicolon+ arg !functionWithNewlines (newlineOrSemicolon+ arg)* newlineOrSemicolon*
 }
 
 expression {

src/parser/shrimp.terms.ts

@@ -19,48 +19,57 @@ export const
   StarEq = 17,
   SlashEq = 18,
   ModuloEq = 19,
-  Identifier = 20,
+  Band = 20,
-  AssignableIdentifier = 21,
+  Bor = 21,
-  Word = 22,
+  Bxor = 22,
-  IdentifierBeforeDot = 23,
+  Shl = 23,
-  Do = 24,
+  Shr = 24,
-  Comment = 25,
+  Ushr = 25,
-  Program = 26,
+  NullishCoalesce = 26,
-  PipeExpr = 27,
+  NullishEq = 27,
-  WhileExpr = 29,
+  Identifier = 28,
-  keyword = 70,
+  AssignableIdentifier = 29,
-  ConditionalOp = 31,
+  Word = 30,
-  ParenExpr = 32,
+  IdentifierBeforeDot = 31,
-  IfExpr = 33,
+  Do = 32,
-  FunctionCall = 35,
+  Comment = 33,
-  DotGet = 36,
+  Program = 34,
-  Number = 37,
+  PipeExpr = 35,
-  PositionalArg = 38,
+  WhileExpr = 37,
-  FunctionDef = 39,
+  keyword = 79,
-  Params = 40,
+  ConditionalOp = 39,
-  NamedParam = 41,
+  ParenExpr = 40,
-  NamedArgPrefix = 42,
+  FunctionCallWithNewlines = 41,
-  String = 43,
+  DotGet = 42,
-  StringFragment = 44,
+  Number = 43,
-  Interpolation = 45,
+  PositionalArg = 44,
-  EscapeSeq = 46,
+  FunctionDef = 45,
-  Boolean = 47,
+  Params = 46,
-  Null = 48,
+  NamedParam = 47,
-  colon = 49,
+  NamedArgPrefix = 48,
-  CatchExpr = 50,
+  String = 49,
-  Block = 52,
+  StringFragment = 50,
-  FinallyExpr = 53,
+  Interpolation = 51,
-  Underscore = 56,
+  EscapeSeq = 52,
-  NamedArg = 57,
+  Boolean = 53,
-  ElseIfExpr = 58,
+  Null = 54,
-  ElseExpr = 60,
+  colon = 55,
-  FunctionCallOrIdentifier = 61,
+  CatchExpr = 56,
-  BinOp = 62,
+  Block = 58,
-  Regex = 63,
+  FinallyExpr = 59,
-  Dict = 64,
+  Underscore = 62,
-  Array = 65,
+  NamedArg = 63,
-  FunctionCallWithBlock = 66,
+  IfExpr = 64,
-  TryExpr = 67,
+  FunctionCall = 66,
-  Throw = 69,
+  ElseIfExpr = 67,
-  CompoundAssign = 71,
+  ElseExpr = 69,
-  Assign = 72
+  FunctionCallOrIdentifier = 70,
+  BinOp = 71,
+  Regex = 72,
+  Dict = 73,
+  Array = 74,
+  FunctionCallWithBlock = 75,
+  TryExpr = 76,
+  Throw = 78,
+  CompoundAssign = 80,
+  Assign = 81

src/parser/shrimp.ts

@@ -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:60, if:68, null:96, catch:102, finally:108, end:110, else:118, try:136, throw:140}
+const spec_Identifier = {__proto__:null,while:76, null:108, catch:114, finally:120, end:122, if:130, else:136, try:154, throw:158}
 export const parser = LRParser.deserialize({
   version: 14,
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-  repeatNodeCount: 11,
+  repeatNodeCount: 12,
-  tokenData: "C_~R|OX#{XY$jYZ%TZp#{pq$jqs#{st%ntu'Vuw#{wx'[xy'ayz'zz{#{{|(e|}#{}!O+X!O!P#{!P!Q-n!Q![)S![!]6Z!]!^%T!^!}#{!}#O6t#O#P8j#P#Q8o#Q#R#{#R#S9Y#S#T#{#T#Y,Y#Y#Z9s#Z#b,Y#b#c>q#c#f,Y#f#g?n#g#h,Y#h#i@k#i#o,Y#o#p#{#p#qBo#q;'S#{;'S;=`$d<%l~#{~O#{~~CYS$QU|SOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{S$gP;=`<%l#{^$qU|S!xYOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U%[U|S#YQOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{^%uZiY|SOY%nYZ#{Zt%ntu&huw%nwx&hx#O%n#O#P&h#P;'S%n;'S;=`'P<%lO%nY&mSiYOY&hZ;'S&h;'S;=`&y<%lO&hY&|P;=`<%l&h^'SP;=`<%l%n~'[O#T~~'aO#R~U'hU|S!}QOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U(RU|S#]QOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U(jW|SOt#{uw#{x!Q#{!Q![)S![#O#{#P;'S#{;'S;=`$d<%lO#{U)ZY|SuQOt#{uw#{x!O#{!O!P)y!P!Q#{!Q![)S![#O#{#P;'S#{;'S;=`$d<%lO#{U*OW|SOt#{uw#{x!Q#{!Q![*h![#O#{#P;'S#{;'S;=`$d<%lO#{U*oW|SuQOt#{uw#{x!Q#{!Q![*h![#O#{#P;'S#{;'S;=`$d<%lO#{U+^^|SOt#{uw#{x}#{}!O,Y!O!Q#{!Q![)S![!_#{!_!`-T!`#O#{#P#T#{#T#o,Y#o;'S#{;'S;=`$d<%lO#{U,_[|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#o,Y#o;'S#{;'S;=`$d<%lO#{U-[UzQ|SOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U-sW|SOt#{uw#{x!P#{!P!Q.]!Q#O#{#P;'S#{;'S;=`$d<%lO#{U.b^|SOY/^YZ#{Zt/^tu0auw/^wx0ax!P/^!P!Q#{!Q!}/^!}#O5S#O#P2o#P;'S/^;'S;=`6T<%lO/^U/e^|S!aQOY/^YZ#{Zt/^tu0auw/^wx0ax!P/^!P!Q3U!Q!}/^!}#O5S#O#P2o#P;'S/^;'S;=`6T<%lO/^Q0fX!aQOY0aZ!P0a!P!Q1R!Q!}0a!}#O1p#O#P2o#P;'S0a;'S;=`3O<%lO0aQ1UP!P!Q1XQ1^U!aQ#Z#[1X#]#^1X#a#b1X#g#h1X#i#j1X#m#n1XQ1sVOY1pZ#O1p#O#P2Y#P#Q0a#Q;'S1p;'S;=`2i<%lO1pQ2]SOY1pZ;'S1p;'S;=`2i<%lO1pQ2lP;=`<%l1pQ2rSOY0aZ;'S0a;'S;=`3O<%lO0aQ3RP;=`<%l0aU3ZW|SOt#{uw#{x!P#{!P!Q3s!Q#O#{#P;'S#{;'S;=`$d<%lO#{U3zb|S!aQOt#{uw#{x#O#{#P#Z#{#Z#[3s#[#]#{#]#^3s#^#a#{#a#b3s#b#g#{#g#h3s#h#i#{#i#j3s#j#m#{#m#n3s#n;'S#{;'S;=`$d<%lO#{U5X[|SOY5SYZ#{Zt5Stu1puw5Swx1px#O5S#O#P2Y#P#Q/^#Q;'S5S;'S;=`5}<%lO5SU6QP;=`<%l5SU6WP;=`<%l/^U6bU|S!RQOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U6{W#_Q|SOt#{uw#{x!_#{!_!`7e!`#O#{#P;'S#{;'S;=`$d<%lO#{U7jV|SOt#{uw#{x#O#{#P#Q8P#Q;'S#{;'S;=`$d<%lO#{U8WU#^Q|SOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{~8oO#U~U8vU#`Q|SOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U9aU|S!YQOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{U9x]|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#U:q#U#o,Y#o;'S#{;'S;=`$d<%lO#{U:v^|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#`,Y#`#a;r#a#o,Y#o;'S#{;'S;=`$d<%lO#{U;w^|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#g,Y#g#h<s#h#o,Y#o;'S#{;'S;=`$d<%lO#{U<x^|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#X,Y#X#Y=t#Y#o,Y#o;'S#{;'S;=`$d<%lO#{U={[!PQ|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#o,Y#o;'S#{;'S;=`$d<%lO#{^>x[#VW|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#o,Y#o;'S#{;'S;=`$d<%lO#{^?u[#XW|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#o,Y#o;'S#{;'S;=`$d<%lO#{^@r^#WW|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#f,Y#f#gAn#g#o,Y#o;'S#{;'S;=`$d<%lO#{UAs^|SOt#{uw#{x}#{}!O,Y!O!_#{!_!`-T!`#O#{#P#T#{#T#i,Y#i#j<s#j#o,Y#o;'S#{;'S;=`$d<%lO#{UBvUlQ|SOt#{uw#{x#O#{#P;'S#{;'S;=`$d<%lO#{~C_O#a~",
+  tokenData: "IS~R}OX$OXY$mYZ%WZp$Opq$mqs$Ost%qtu'Yuw$Owx'_xy'dyz'}z{$O{|(h|}$O}!O(h!O!P$O!P!Q0o!Q!R)Y!R![+w![!]9[!]!^%W!^!}$O!}#O9u#O#P;k#P#Q;p#Q#R$O#R#S<Z#S#T$O#T#Y<t#Y#Z>`#Z#b<t#b#cC|#c#f<t#f#gEP#g#h<t#h#iFS#i#o<t#o#p$O#p#qHd#q;'S$O;'S;=`$g<%l~$O~O$O~~H}S$TU!SSOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OS$jP;=`<%l$O^$tU!SS#SYOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU%_U!SS#YQOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$O^%xZqY!SSOY%qYZ$OZt%qtu&kuw%qwx&kx#O%q#O#P&k#P;'S%q;'S;=`'S<%lO%qY&pSqYOY&kZ;'S&k;'S;=`&|<%lO&kY'PP;=`<%l&k^'VP;=`<%l%q~'_O#_~~'dO#]~U'kU!SS#XQOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU(UU!SS#gQOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU(mX!SSOt$Ouw$Ox!Q$O!Q!R)Y!R![+w![#O$O#P;'S$O;'S;=`$g<%lO$OU)a`!SS{QOt$Ouw$Ox!O$O!O!P*c!P!Q$O!Q![+w![#O$O#P#R$O#R#S,t#S#U$O#U#V-c#V#l$O#l#m.w#m;'S$O;'S;=`$g<%lO$OU*hW!SSOt$Ouw$Ox!Q$O!Q![+Q![#O$O#P;'S$O;'S;=`$g<%lO$OU+XY!SS{QOt$Ouw$Ox!Q$O!Q![+Q![#O$O#P#R$O#R#S*c#S;'S$O;'S;=`$g<%lO$OU,O[!SS{QOt$Ouw$Ox!O$O!O!P*c!P!Q$O!Q![+w![#O$O#P#R$O#R#S,t#S;'S$O;'S;=`$g<%lO$OU,yW!SSOt$Ouw$Ox!Q$O!Q![+w![#O$O#P;'S$O;'S;=`$g<%lO$OU-hX!SSOt$Ouw$Ox!Q$O!Q!R.T!R!S.T!S#O$O#P;'S$O;'S;=`$g<%lO$OU.[X!SS{QOt$Ouw$Ox!Q$O!Q!R.T!R!S.T!S#O$O#P;'S$O;'S;=`$g<%lO$OU.|[!SSOt$Ouw$Ox!Q$O!Q![/r![!c$O!c!i/r!i#O$O#P#T$O#T#Z/r#Z;'S$O;'S;=`$g<%lO$OU/y[!SS{QOt$Ouw$Ox!Q$O!Q![/r![!c$O!c!i/r!i#O$O#P#T$O#T#Z/r#Z;'S$O;'S;=`$g<%lO$OU0tW!SSOt$Ouw$Ox!P$O!P!Q1^!Q#O$O#P;'S$O;'S;=`$g<%lO$OU1c^!SSOY2_YZ$OZt2_tu3buw2_wx3bx!P2_!P!Q$O!Q!}2_!}#O8T#O#P5p#P;'S2_;'S;=`9U<%lO2_U2f^!SS!jQOY2_YZ$OZt2_tu3buw2_wx3bx!P2_!P!Q6V!Q!}2_!}#O8T#O#P5p#P;'S2_;'S;=`9U<%lO2_Q3gX!jQOY3bZ!P3b!P!Q4S!Q!}3b!}#O4q#O#P5p#P;'S3b;'S;=`6P<%lO3bQ4VP!P!Q4YQ4_U!jQ#Z#[4Y#]#^4Y#a#b4Y#g#h4Y#i#j4Y#m#n4YQ4tVOY4qZ#O4q#O#P5Z#P#Q3b#Q;'S4q;'S;=`5j<%lO4qQ5^SOY4qZ;'S4q;'S;=`5j<%lO4qQ5mP;=`<%l4qQ5sSOY3bZ;'S3b;'S;=`6P<%lO3bQ6SP;=`<%l3bU6[W!SSOt$Ouw$Ox!P$O!P!Q6t!Q#O$O#P;'S$O;'S;=`$g<%lO$OU6{b!SS!jQOt$Ouw$Ox#O$O#P#Z$O#Z#[6t#[#]$O#]#^6t#^#a$O#a#b6t#b#g$O#g#h6t#h#i$O#i#j6t#j#m$O#m#n6t#n;'S$O;'S;=`$g<%lO$OU8Y[!SSOY8TYZ$OZt8Ttu4quw8Twx4qx#O8T#O#P5Z#P#Q2_#Q;'S8T;'S;=`9O<%lO8TU9RP;=`<%l8TU9XP;=`<%l2_U9cU!SS!XQOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU9|W#iQ!SSOt$Ouw$Ox!_$O!_!`:f!`#O$O#P;'S$O;'S;=`$g<%lO$OU:kV!SSOt$Ouw$Ox#O$O#P#Q;Q#Q;'S$O;'S;=`$g<%lO$OU;XU#hQ!SSOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$O~;pO#`~U;wU#jQ!SSOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU<bU!SS!`QOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU<y^!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#o<t#o;'S$O;'S;=`$g<%lO$OU=|U!QQ!SSOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$OU>e_!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#U?d#U#o<t#o;'S$O;'S;=`$g<%lO$OU?i`!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#`<t#`#a@k#a#o<t#o;'S$O;'S;=`$g<%lO$OU@p`!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#g<t#g#hAr#h#o<t#o;'S$O;'S;=`$g<%lO$OUAw`!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#X<t#X#YBy#Y#o<t#o;'S$O;'S;=`$g<%lO$OUCQ^!VQ!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#o<t#o;'S$O;'S;=`$g<%lO$O^DT^#aW!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#o<t#o;'S$O;'S;=`$g<%lO$O^EW^#cW!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#o<t#o;'S$O;'S;=`$g<%lO$O^FZ`#bW!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#f<t#f#gG]#g#o<t#o;'S$O;'S;=`$g<%lO$OUGb`!SSOt$Ouw$Ox}$O}!O<t!O!Q$O!Q![<t![!_$O!_!`=u!`#O$O#P#T$O#T#i<t#i#jAr#j#o<t#o;'S$O;'S;=`$g<%lO$OUHkUtQ!SSOt$Ouw$Ox#O$O#P;'S$O;'S;=`$g<%lO$O~ISO#k~",
-  tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO#P~~", 11)],
+  tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO#Z~~", 11)],
-  topRules: {"Program":[0,26]},
+  topRules: {"Program":[0,34]},
-  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}],
+  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: 1634
+  tokenPrec: 2202
 })

src/parser/tests/basics.test.ts

@@ -368,6 +368,118 @@ 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`)
+  })
+})
+
+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', () => {
@@ -595,6 +707,87 @@ 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', () => {
+  test('? can still end an identifier', () => {
+    expect('what?').toMatchTree(`
+      FunctionCallOrIdentifier
+        Identifier what?`)
+  })
+
+  test('?? can still end an identifier', () => {
+    expect('what??').toMatchTree(`
+      FunctionCallOrIdentifier
+        Identifier what??`)
+  })
+
+  test('?? can still be in a word', () => {
+    expect('what??the').toMatchTree(`
+      FunctionCallOrIdentifier
+        Identifier what??the`)
+  })
+
+  test('?? can still start a word', () => {
+    expect('??what??the').toMatchTree(`
+      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`)
+  })
 })
 
 describe('DotGet whitespace sensitivity', () => {

src/parser/tests/bitwise.test.ts

@@ -0,0 +1,72 @@
+import { expect, describe, test } from 'bun:test'
+
+import '../shrimp.grammar' // Importing this so changes cause it to retest!
+
+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/literals.test.ts

@@ -2,6 +2,65 @@ import { expect, describe, test } from 'bun:test'
 
 import '../shrimp.grammar' // Importing this so changes cause it to retest!
 
+describe('number literals', () => {
+  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('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('positive prefix binary', () => {
+    expect('+0b110').toMatchTree(`
+      Number +0b110
+    `)
+  })
+
+  test('positive prefix hex', () => {
+    expect('+0xFF').toMatchTree(`
+      Number +0xFF
+    `)
+  })
+
+  test('hex and binary in arrays', () => {
+    expect('[0xFF 0b110 42]').toMatchTree(`
+      Array
+        Number 0xFF
+        Number 0b110
+        Number 42
+    `)
+  })
+})
+
 describe('array literals', () => {
   test('work with numbers', () => {
     expect('[1 2 3]').toMatchTree(`

src/parser/tokenizer.ts

@@ -193,6 +193,15 @@ const chooseIdentifierToken = (input: InputStream, stack: Stack): number => {
 
   const nextCh = getFullCodePoint(input, peekPos)
   const nextCh2 = getFullCodePoint(input, peekPos + 1)
+  const nextCh3 = getFullCodePoint(input, peekPos + 2)
+
+  // Check for ??= (three-character compound operator)
+  if (nextCh === 63 /* ? */ && nextCh2 === 63 /* ? */ && nextCh3 === 61 /* = */) {
+    const charAfterOp = getFullCodePoint(input, peekPos + 3)
+    if (isWhiteSpace(charAfterOp) || charAfterOp === -1 /* EOF */) {
+      return AssignableIdentifier
+    }
+  }
 
   // Check for compound assignment operators: +=, -=, *=, /=, %=
   if (

src/prelude/index.ts

@@ -6,6 +6,7 @@ import {
 } from 'reefvm'
 
 import { dict } from './dict'
+import { json } from './json'
 import { load } from './load'
 import { list } from './list'
 import { math } from './math'
@@ -13,6 +14,7 @@ import { str } from './str'
 
 export const globals = {
   dict,
+  json,
   load,
   list,
   math,
@@ -40,6 +42,7 @@ export const globals = {
   'var?': function (this: VM, v: string) {
     return typeof v !== 'string' || this.scope.has(v)
   },
+  ref: (fn: Function) => fn,
 
   // env
   args: Bun.argv.slice(1),
@@ -60,6 +63,7 @@ export const globals = {
 
   // boolean/logic
   not: (v: any) => !v,
+  bnot: (n: number) => ~(n | 0),
 
   // utilities
   inc: (n: number) => n + 1,

src/prelude/json.ts

@@ -0,0 +1,7 @@
+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

@@ -73,6 +73,13 @@ export const list = {
     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
   reverse: (list: any[]) => list.slice().reverse(),
@@ -142,4 +149,5 @@ export const list = {
   ; (list.push as any).raw = true
   ; (list.pop as any).raw = true
   ; (list.shift as any).raw = true
-  ; (list.unshift as any).raw = true
+  ; (list.unshift as any).raw = true
+  ; (list.insert as any).raw = true

src/prelude/tests/info.test.ts

@@ -91,3 +91,15 @@ describe('environment', () => {
     await expect(`list.first args | 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')
+})

src/prelude/tests/json.test.ts

@@ -0,0 +1,84 @@
+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/prelude.test.ts

@@ -349,6 +349,22 @@ 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])
   })