25 lines
618 B
TypeScript
25 lines
618 B
TypeScript
import {Command, ParseContext} from "./command.js";
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import {LexInput} from "../lexer.js";
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import {Awaitable} from "../../util/types.js";
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import {StrVM} from "../vm.js";
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export class Lower extends Command<{}> {
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isParseCandidate(token: LexInput): boolean {
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return this.isKeyword(token, 'lower')
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}
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attemptParse(context: ParseContext): {} {
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return {}
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}
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getDisplayName(): string {
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return 'lower'
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}
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execute(vm: StrVM): Awaitable<StrVM> {
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return vm.inPlace(ctx =>
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ctx.replaceSubject(sub =>
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sub.modify(s => s.toLowerCase())))
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}
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}
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