parjs/internal/combinators/then-pick.js

A parser-combinator library for JavaScript.

"use strict";
/**
 * @module parjs/combinators
 */
/** */
Object.defineProperty(exports, "__esModule", { value: true });
const parser_1 = require("../parser");
const combinator_1 = require("./combinator");
/**
 * 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 combinator_1.defineCombinator(source => {
        return new class ThenPick extends parser_1.ParjserBase {
            constructor() {
                super(...arguments);
                this.expecting = source.expecting;
                this.type = "then-pick";
            }
            _apply(ps) {
                source.apply(ps);
                if (!ps.isOk) {
                    return;
                }
                let firstVal = ps.value;
                let nextParser = selector(ps.value, ps.userState);
                nextParser.apply(ps);
                if (ps.isOk) {
                    return;
                }
                if (ps.isSoft) {
                    ps.kind = "Hard";
                }
            }
        }();
    });
}
exports.thenPick = thenPick;

//# sourceMappingURL=then-pick.js.map