parjs/dist/internal/combinators/then-pick.js

Library for building parsers using combinators.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.thenPick = void 0;
const combinated_1 = require("../combinated");
const wrap_implicit_1 = require("../wrap-implicit");
class ThenPick extends combinated_1.Combinated {
    constructor(source, _ctor) {
        super(source);
        this._ctor = _ctor;
        this.type = "then-pick";
        this.expecting = `${this.source.expecting} then <dynamic>`;
    }
    _apply(ps) {
        this.source.apply(ps);
        if (!ps.isOk) {
            return;
        }
        const nextParser = (0, wrap_implicit_1.wrapImplicit)(this._ctor(ps.value, ps.userState));
        nextParser.apply(ps);
        if (ps.isOk) {
            return;
        }
        if (ps.isSoft) {
            ps.kind = "Hard";
        }
    }
}
/**
 * Applies the source parser, and then applies a selector on the source parser's result and user
 * state to choose or create the parser to apply next.
 *
 * @param selector
 */
function thenPick(selector) {
    return source => new ThenPick((0, wrap_implicit_1.wrapImplicit)(source), selector);
}
exports.thenPick = thenPick;
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