import {Command, ParseContext, wrapString} from "./command.js";
import {LexInput} from "../lexer.js";
import {StrVM} from "../vm.js";
import {Awaitable} from "../../util/types.js";

export class Words extends Command<{}> {
    attemptParse(context: ParseContext): {} {
        return {}
    }

    getDisplayName(): string {
        return 'words'
    }

    isParseCandidate(token: LexInput): boolean {
        return this.isKeyword(token, 'words')
    }

    execute(vm: StrVM): Awaitable<StrVM> {
        return vm.replaceContextMatchingTerm({
            destructure: sub => {
                const separators = [...sub.matchAll(/\s+/sg)]
                const parts = sub.split(/\s+/sg)

                return parts.map((part, idx) => ({
                    prefix: idx ? separators[idx - 1][0] : undefined,
                    value: wrapString(part),
                }))
            }
        })
    }
}