import dict only=something

This commit is contained in:
Chris Wanstrath 2025-11-09 19:20:48 -08:00
parent 89aa120fd2
commit 84001bf67f
6 changed files with 49 additions and 14 deletions

View File

@ -799,16 +799,24 @@ export class Compiler {
case terms.Import: {
const instructions: ProgramItem[] = []
const [_import, ...dicts] = getAllChildren(node)
const [_import, ...nodes] = getAllChildren(node)
const args = nodes.filter(node => node.type.id === terms.Identifier)
const namedArgs = nodes.filter(node => node.type.id === terms.NamedArg)
instructions.push(['LOAD', 'import'])
dicts.forEach((dict) =>
args.forEach((dict) =>
instructions.push(['PUSH', input.slice(dict.from, dict.to)])
)
instructions.push(['PUSH', dicts.length])
instructions.push(['PUSH', 0])
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

View File

@ -465,4 +465,14 @@ describe('import', () => {
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'])
})
})

View File

@ -164,7 +164,7 @@ Throw {
// this has to be in the parse tree so the scope tracker can use it
Import {
import AssignableIdentifier+
import NamedArg* Identifier+ NamedArg*
}
ConditionalOp {

View File

@ -7,9 +7,9 @@ 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}
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 PlusEq MinusEq StarEq SlashEq ModuloEq Band Bor Bxor Shl Shr Ushr NullishCoalesce NullishEq Identifier AssignableIdentifier Word IdentifierBeforeDot CurlyString Do Comment Program PipeExpr operator WhileExpr keyword ConditionalOp ParenExpr FunctionCall DotGet Number PositionalArg FunctionDef Params NamedParam NamedArgPrefix String StringFragment Interpolation EscapeSeq DoubleQuote Boolean Null colon CatchExpr keyword Block FinallyExpr keyword keyword Underscore NamedArg IfExpr keyword FunctionCall ElseIfExpr keyword ElseExpr FunctionCallOrIdentifier BinOp Regex Dict Array FunctionCallWithBlock TryExpr keyword Throw keyword Import keyword CompoundAssign Assign",
maxTerm: 124,
context: trackScope,
@ -23,5 +23,5 @@ export const parser = LRParser.deserialize({
tokenizers: [operatorTokenizer, 1, 2, 3, tokenizer, new LocalTokenGroup("[~RP!O!PU~ZO#`~~", 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: 2299
tokenPrec: 2370
})

View File

@ -1023,7 +1023,7 @@ describe('import', () => {
expect(`import str`).toMatchTree(`
Import
keyword import
AssignableIdentifier str
Identifier str
`)
})
@ -1031,9 +1031,20 @@ describe('import', () => {
expect(`import str math list`).toMatchTree(`
Import
keyword import
AssignableIdentifier str
AssignableIdentifier math
AssignableIdentifier list
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?
`)
})
})

View File

@ -43,7 +43,12 @@ export const globals = {
return typeof v !== 'string' || this.scope.has(v)
},
ref: (fn: Function) => fn,
import: function (this: VM, ...idents: string[]) {
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)
@ -52,6 +57,7 @@ export const globals = {
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)
}
}