pegisland/dist/src/IParsingEnv.js

General PEG-based parser supporting island grammars with lake symbols

"use strict";
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _a, _BaseParsingEnv_createMemoTable;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BaseParsingEnv = void 0;
const Recognizer_1 = require("./Recognizer");
class BaseParsingEnv {
    constructor(s) {
        this.s = s;
        this.recognizer = new Recognizer_1.Recognizer(this);
        this.symbolStack = [];
        this.memo = __classPrivateFieldGet(BaseParsingEnv, _a, "m", _BaseParsingEnv_createMemoTable).call(BaseParsingEnv, s.length + 1);
    }
    push() {
        this.symbolStack.push({});
    }
    pop() {
        this.symbolStack.pop();
    }
    has(name) {
        return name in this.symbolStack[this.symbolStack.length - 1];
    }
    lookup(name) {
        return this.symbolStack[this.symbolStack.length - 1][name];
    }
    register(name, value) {
        this.symbolStack[this.symbolStack.length - 1][name] = value;
    }
    parseRule(rule, pos) {
        return rule.parse(this, pos);
    }
}
exports.BaseParsingEnv = BaseParsingEnv;
_a = BaseParsingEnv, _BaseParsingEnv_createMemoTable = function _BaseParsingEnv_createMemoTable(entryCount) {
    return [...Array(entryCount)].map(() => new WeakMap());
};
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