38 lines
1.1 KiB
TypeScript
38 lines
1.1 KiB
TypeScript
import {Command, CommandData, ParseContext} from "./command.js";
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import {Executable} from "../parse.js";
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import {LexInput} from "../lexer.js";
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import {StrVM} from "../vm.js";
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import {Awaitable} from "../../util/types.js";
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import {Words} from "./words.js";
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import {Each} from "./each.js";
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import {Join} from "./join.js";
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export type WordData = {
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exec: Executable<CommandData>,
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}
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export class Word extends Command<WordData> {
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async attemptParse(context: ParseContext): Promise<WordData> {
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return {
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exec: await context.popExecutable(),
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}
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}
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getDisplayName(): string {
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return 'word'
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}
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isParseCandidate(token: LexInput): boolean {
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return this.isKeyword(token, 'word')
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}
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execute(vm: StrVM, data: WordData): Awaitable<StrVM> {
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// `word <cmd>` is equivalent to `words` -> `each <cmd>` -> `join`, so just do that
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return vm.replaceContextFromChild(async child => {
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await (new Words).execute(child)
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await (new Each).execute(child, { exec: data.exec })
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await (new Join).execute(child, {})
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})
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}
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}
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