parjs/dist/internal/combinators/reason.js

Library for building parsers using combinators.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.reason = void 0;
const combinated_1 = require("../combinated");
const wrap_implicit_1 = require("../wrap-implicit");
class Expects extends combinated_1.Combinated {
    constructor(source, messageOrFunction) {
        super(source);
        this.messageOrFunction = messageOrFunction;
        this.type = "expects";
        this.expecting = typeof this.messageOrFunction === "string" ? this.messageOrFunction : "<dynamic>";
    }
    _apply(ps) {
        const { position } = ps;
        const { messageOrFunction } = this;
        this.source.apply(ps);
        if (ps.kind !== "OK") {
            ps.reason =
                typeof messageOrFunction === "string"
                    ? messageOrFunction
                    : messageOrFunction({
                        kind: ps.kind,
                        reason: ps.reason // the error is guaranteed to be non-null
                    });
            return;
        }
        ps.position = position;
    }
}
function reason(messageOrFunction) {
    return (source) => new Expects((0, wrap_implicit_1.wrapImplicit)(source), messageOrFunction);
}
exports.reason = reason;
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