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14 changed files with 368 additions and 77 deletions

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@ -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']

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@ -1,8 +1,9 @@
#!/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'
@ -34,6 +35,9 @@ function showVersion() {
}
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}; ${code}`
return await runCode(code)
@ -149,10 +153,12 @@ async function main() {
console.log(`${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)
}

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@ -211,16 +211,37 @@ export class Compiler {
}
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) {
instructions.push(...this.#compileNode(property, input))
} else {
const propertyValue = input.slice(property.from, property.to)
instructions.push(['PUSH', propertyValue])
const flattenProperty = (prop: SyntaxNode): void => {
if (prop.type.id === terms.DotGet) {
const nestedParts = getDotGetParts(prop, input)
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.id === terms.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
}

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@ -294,6 +294,43 @@ 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', () => {

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@ -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,
@ -301,9 +301,9 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
)
}
if (![terms.Identifier, terms.Number, terms.ParenExpr].includes(property.type.id)) {
if (![terms.Identifier, terms.Number, terms.ParenExpr, terms.DotGet].includes(property.type.id)) {
throw new CompilerError(
`DotGet property must be an Identifier or Number, got ${property.type.name}`,
`DotGet property must be an Identifier, Number, ParenExpr, or DotGet, got ${property.type.name}`,
property.from,
property.to
)
@ -311,7 +311,7 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
const objectName = input.slice(object.from, object.to)
return { objectName, property }
return { object, objectName, property }
}
export const getTryExprParts = (node: SyntaxNode, input: string) => {

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@ -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)

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

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@ -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

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@ -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)],
tokenData: "Ls~R!OOX$RXY$pYZ%ZZp$Rpq$pqr$Rrs%tst'ztu)cuw$Rwx)jxy)oyz*Yz{$R{|*s|}$R}!O*s!O!P$R!P!Q4`!Q!R+e!R![.Y![!]<{!]!^%Z!^!}$R!}#O=f#O#P?[#P#Q?a#Q#R$R#R#S?z#S#T$R#T#Y@e#Y#ZBP#Z#b@e#b#cGm#c#f@e#f#gHp#g#h@e#h#iIs#i#o@e#o#p$R#p#qLT#q;'S$R;'S;=`$j<%l~$R~O$R~~LnS$WU!USOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RS$mP;=`<%l$R^$wU!US#YYOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU%bU!US#`QOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU%yZ!USOr%trs&lst%ttu'Vuw%twx'Vx#O%t#O#P'V#P;'S%t;'S;=`'t<%lO%tU&sU!YQ!USOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RQ'YTOr'Vrs'is;'S'V;'S;=`'n<%lO'VQ'nO!YQQ'qP;=`<%l'VU'wP;=`<%l%t^(RZrY!USOY'zYZ$RZt'ztu(tuw'zwx(tx#O'z#O#P(t#P;'S'z;'S;=`)]<%lO'zY(ySrYOY(tZ;'S(t;'S;=`)V<%lO(tY)YP;=`<%l(t^)`P;=`<%l'z^)jO#e[}Q~)oO#c~U)vU!US#_QOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU*aU!US#mQOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU*xX!USOt$Ruw$Rx!Q$R!Q!R+e!R![.Y![#O$R#P;'S$R;'S;=`$j<%lO$RU+lb!US|QOt$Ruw$Rx!O$R!O!P,t!P!Q$R!Q![.Y![#O$R#P#R$R#R#S/V#S#U$R#U#V/t#V#c$R#c#d1Y#d#l$R#l#m2h#m;'S$R;'S;=`$j<%lO$RU,yW!USOt$Ruw$Rx!Q$R!Q![-c![#O$R#P;'S$R;'S;=`$j<%lO$RU-jY!US|QOt$Ruw$Rx!Q$R!Q![-c![#O$R#P#R$R#R#S,t#S;'S$R;'S;=`$j<%lO$RU.a[!US|QOt$Ruw$Rx!O$R!O!P,t!P!Q$R!Q![.Y![#O$R#P#R$R#R#S/V#S;'S$R;'S;=`$j<%lO$RU/[W!USOt$Ruw$Rx!Q$R!Q![.Y![#O$R#P;'S$R;'S;=`$j<%lO$RU/yX!USOt$Ruw$Rx!Q$R!Q!R0f!R!S0f!S#O$R#P;'S$R;'S;=`$j<%lO$RU0mX!US|QOt$Ruw$Rx!Q$R!Q!R0f!R!S0f!S#O$R#P;'S$R;'S;=`$j<%lO$RU1_W!USOt$Ruw$Rx!Q$R!Q!Y1w!Y#O$R#P;'S$R;'S;=`$j<%lO$RU2OW!US|QOt$Ruw$Rx!Q$R!Q!Y1w!Y#O$R#P;'S$R;'S;=`$j<%lO$RU2m[!USOt$Ruw$Rx!Q$R!Q![3c![!c$R!c!i3c!i#O$R#P#T$R#T#Z3c#Z;'S$R;'S;=`$j<%lO$RU3j[!US|QOt$Ruw$Rx!Q$R!Q![3c![!c$R!c!i3c!i#O$R#P#T$R#T#Z3c#Z;'S$R;'S;=`$j<%lO$RU4eW!USOt$Ruw$Rx!P$R!P!Q4}!Q#O$R#P;'S$R;'S;=`$j<%lO$RU5S^!USOY6OYZ$RZt6Otu7Ruw6Owx7Rx!P6O!P!Q$R!Q!}6O!}#O;t#O#P9a#P;'S6O;'S;=`<u<%lO6OU6V^!US!mQOY6OYZ$RZt6Otu7Ruw6Owx7Rx!P6O!P!Q9v!Q!}6O!}#O;t#O#P9a#P;'S6O;'S;=`<u<%lO6OQ7WX!mQOY7RZ!P7R!P!Q7s!Q!}7R!}#O8b#O#P9a#P;'S7R;'S;=`9p<%lO7RQ7vP!P!Q7yQ8OU!mQ#Z#[7y#]#^7y#a#b7y#g#h7y#i#j7y#m#n7yQ8eVOY8bZ#O8b#O#P8z#P#Q7R#Q;'S8b;'S;=`9Z<%lO8bQ8}SOY8bZ;'S8b;'S;=`9Z<%lO8bQ9^P;=`<%l8bQ9dSOY7RZ;'S7R;'S;=`9p<%lO7RQ9sP;=`<%l7RU9{W!USOt$Ruw$Rx!P$R!P!Q:e!Q#O$R#P;'S$R;'S;=`$j<%lO$RU:lb!US!mQOt$Ruw$Rx#O$R#P#Z$R#Z#[:e#[#]$R#]#^:e#^#a$R#a#b:e#b#g$R#g#h:e#h#i$R#i#j:e#j#m$R#m#n:e#n;'S$R;'S;=`$j<%lO$RU;y[!USOY;tYZ$RZt;ttu8buw;twx8bx#O;t#O#P8z#P#Q6O#Q;'S;t;'S;=`<o<%lO;tU<rP;=`<%l;tU<xP;=`<%l6OU=SU!US!]QOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU=mW#oQ!USOt$Ruw$Rx!_$R!_!`>V!`#O$R#P;'S$R;'S;=`$j<%lO$RU>[V!USOt$Ruw$Rx#O$R#P#Q>q#Q;'S$R;'S;=`$j<%lO$RU>xU#nQ!USOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$R~?aO#f~U?hU#pQ!USOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU@RU!US!dQOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RU@j^!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#o@e#o;'S$R;'S;=`$j<%lO$RUAmU!SQ!USOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$RUBU_!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#UCT#U#o@e#o;'S$R;'S;=`$j<%lO$RUCY`!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#`@e#`#aD[#a#o@e#o;'S$R;'S;=`$j<%lO$RUDa`!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#g@e#g#hEc#h#o@e#o;'S$R;'S;=`$j<%lO$RUEh`!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#X@e#X#YFj#Y#o@e#o;'S$R;'S;=`$j<%lO$RUFq^!ZQ!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#o@e#o;'S$R;'S;=`$j<%lO$R^Gt^#gW!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#o@e#o;'S$R;'S;=`$j<%lO$R^Hw^#iW!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#o@e#o;'S$R;'S;=`$j<%lO$R^Iz`#hW!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#f@e#f#gJ|#g#o@e#o;'S$R;'S;=`$j<%lO$RUKR`!USOt$Ruw$Rx}$R}!O@e!O!Q$R!Q![@e![!_$R!_!`Af!`#O$R#P#T$R#T#i@e#i#jEc#j#o@e#o;'S$R;'S;=`$j<%lO$RUL[UuQ!USOt$Ruw$Rx#O$R#P;'S$R;'S;=`$j<%lO$R~LsO#q~",
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: 2370
tokenPrec: 2428
})

View File

@ -298,4 +298,163 @@ 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
`)
})
})
})

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
`)
})

View File

@ -1,5 +1,5 @@
import { ExternalTokenizer, InputStream, Stack } from '@lezer/lr'
import { Identifier, AssignableIdentifier, Word, IdentifierBeforeDot, Do, CurlyString } from './shrimp.terms'
import { Identifier, AssignableIdentifier, Word, IdentifierBeforeDot, Do, CurlyString, DotGet } from './shrimp.terms'
// doobie doobie do (we need the `do` keyword to know when we're defining params)
export function specializeKeyword(ident: string) {
@ -187,11 +187,21 @@ const checkForDotGet = (input: InputStream, stack: Stack, pos: number): number |
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
// Check if identifier is in scope (lexical scope or globals)
const inScope = context?.scope.has(identifierText) || globals.includes(identifierText)
// property access
if (inScope) return IdentifierBeforeDot
// Not in scope - check if we're inside a DotGet chain
// Inside the @skip {} block where DotGet is defined, Word cannot be shifted
// but Identifier can be. This tells us we're at the RHS of a DotGet.
const canShiftIdentifier = stack.canShift(Identifier)
const canShiftWord = stack.canShift(Word)
const inDotGetChain = canShiftIdentifier && !canShiftWord
// continue if we're inside a DotGet
return inDotGetChain ? IdentifierBeforeDot : null
}
// Decide between AssignableIdentifier and Identifier using grammar state + peek-ahead

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@ -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

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@ -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)
})
})