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Make dot-get work in the compiler AND with parens exprs #12

Merged
defunkt merged 1 commits from dot-get-the-sequel into main 2025-10-29 20:20:59 +00:00
Conversation 1 Commits 1 Files Changed 8 +61 -18
8 changed files with 61 additions and 18 deletions
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Showing only changes of commit 1053a5ff52 - Show all commits

13
src/compiler/compiler.ts
View File

@ -96,7 +96,6 @@ export class Compiler {
#compileNode(node: SyntaxNode, input: string): ProgramItem[] {
const value = input.slice(node.from, node.to)
if (DEBUG) console.log(`🫦 ${node.name}: ${value}`)
switch (node.type.id) {
@ -192,10 +191,15 @@ export class Compiler {
}
case terms.DotGet: {
const { objectName, propertyName } = getDotGetParts(node, input)
const { objectName, property } = getDotGetParts(node, input)
const instructions: ProgramItem[] = []
instructions.push(['TRY_LOAD', objectName])
instructions.push(['PUSH', propertyName])
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])
}
instructions.push(['DOT_GET'])
return instructions
}
@ -270,8 +274,9 @@ export class Compiler {
}
case terms.FunctionCallOrIdentifier: {
if (node.firstChild?.name === 'DotGet')
if (node.firstChild?.type.id === terms.DotGet) {
return this.#compileNode(node.firstChild, input)
}
return [['TRY_CALL', value]]
}

20
src/compiler/tests/compiler.test.ts
View File

@ -102,8 +102,7 @@ describe('compiler', () => {
end
abc
`)
.toEvaluateTo(true)
`).toEvaluateTo(true)
})
test('simple conditionals', () => {
@ -244,3 +243,20 @@ describe('native functions', () => {
expect(`add 5 9`).toEvaluateTo(14, { add })
})
})
describe('dot get', () => {
const array = (...items: any) => items
const dict = (atNamed: any) => atNamed
test('access array element', () => {
expect(`arr = array 'a' 'b' 'c'; arr.1`).toEvaluateTo('b', { array })
})
test('access dict element', () => {
expect(`dict = dict a=1 b=2; dict.a`).toEvaluateTo(1, { dict })
})
test('use parens expr with dot-get', () => {
expect(`a = 1; arr = array 'a' 'b' 'c'; arr.(1 + a)`).toEvaluateTo('c', { array })
})
})

7
src/compiler/utils.ts
View File

@ -203,7 +203,7 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
const children = getAllChildren(node)
const [object, property] = children
if (children.length !== 2) {
if (!object || !property) {
throw new CompilerError(
`DotGet expected 2 identifier children, got ${children.length}`,
node.from,
@ -219,7 +219,7 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
)
}
if (property.type.id !== terms.Identifier && property.type.id !== terms.Number) {
if (![terms.Identifier, terms.Number, terms.ParenExpr].includes(property.type.id)) {
throw new CompilerError(
`DotGet property must be an Identifier or Number, got ${property.type.name}`,
property.from,
@ -228,7 +228,6 @@ export const getDotGetParts = (node: SyntaxNode, input: string) => {
}
const objectName = input.slice(object.from, object.to)
const propertyName = input.slice(property.from, property.to)
return { objectName, propertyName }
return { objectName, property }
}

1
src/editor/editor.tsx
View File

@ -32,7 +32,6 @@ export const Editor = () => {
})
multilineModeSignal.connect((isMultiline) => {
console.log(`🌭 hey babe`, isMultiline)
view.dispatch({
effects: lineNumbersCompartment.reconfigure(isMultiline ? lineNumbers() : []),
})

2
src/parser/shrimp.grammar
View File

@ -174,7 +174,7 @@ expression {
@skip {} {
DotGet {
IdentifierBeforeDot dot (Number | Identifier)
IdentifierBeforeDot dot (Number | Identifier | ParenExpr)
}
String { "'" stringContent* "'" }

8
src/parser/shrimp.ts
View File

@ -7,9 +7,9 @@ import {highlighting} from "./highlight"
const spec_Identifier = {__proto__:null,end:80, null:86, if:96, elseif:104, else:108}
export const parser = LRParser.deserialize({
version: 14,
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nodeNames: "⚠ Star Slash Plus Minus And Or Eq EqEq Neq Lt Lte Gt Gte Modulo Identifier AssignableIdentifier Word IdentifierBeforeDot Do Program PipeExpr FunctionCall DotGet Number ParenExpr FunctionCallOrIdentifier BinOp String StringFragment Interpolation EscapeSeq Boolean Regex Dict NamedArg NamedArgPrefix FunctionDef Params colon keyword Underscore Array Null ConditionalOp PositionalArg operator IfExpr keyword SingleLineThenBlock ThenBlock ElseIfExpr keyword ElseExpr keyword Assign",
maxTerm: 95,
context: trackScope,
@ -23,5 +23,5 @@ export const parser = LRParser.deserialize({
tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO!k~~", 11)],
topRules: {"Program":[0,20]},
specialized: [{term: 15, get: (value: any, stack: any) => (specializeKeyword(value, stack) << 1), external: specializeKeyword},{term: 15, get: (value: keyof typeof spec_Identifier) => spec_Identifier[value] || -1}],
tokenPrec: 1132
tokenPrec: 1135
})

24
src/parser/tests/dot-get.test.ts
View File

@ -274,4 +274,28 @@ end`).toMatchTree(`
Identifier heya
`)
})
test('can use the result of a parens expression as the property of dot get', () => {
expect('obj = list 1 2 3; obj.(1 + 2)').toMatchTree(`
Assign
AssignableIdentifier obj
Eq =
FunctionCall
Identifier list
PositionalArg
Number 1
PositionalArg
Number 2
PositionalArg
Number 3
FunctionCallOrIdentifier
DotGet
IdentifierBeforeDot obj
ParenExpr
BinOp
Number 1
Plus +
Number 2
`)
})
})

4
src/testSetup.ts
View File

@ -60,7 +60,7 @@ expect.extend({
}
},
toFailParse(received: unknown) {
toFailParse(received) {
assert(typeof received === 'string', 'toFailParse can only be used with string values')
try {
@ -121,7 +121,7 @@ expect.extend({
}
},
async toFailEvaluation(received: unknown) {
async toFailEvaluation(received) {
assert(typeof received === 'string', 'toFailEvaluation can only be used with string values')
try {