pegisland/dist/src/Indexer.js

General PEG-based parser supporting island grammars with lake symbols

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Indexer = void 0;
// Copyright (C) 2022- Katsumi Okuda.  All rights reserved.
const BottomUpParser_1 = require("./BottomUpParser");
const DepthFirstTraverser_1 = require("./DepthFirstTraverser");
class Indexer {
    constructor() {
        this.indexMap = new Map();
        this.index = 0;
        this.terminals = [];
    }
    build(peg) {
        const traverser = new DepthFirstTraverser_1.DepthFirstTraverser(this, (0, BottomUpParser_1.getTopLevelExpressions)(peg));
        traverser.traverse();
        return [this.indexMap, this.terminals];
    }
    giveIndex(pe) {
        this.indexMap.set(pe, this.index++);
    }
    visitNonterminal(pe) {
        this.giveIndex(pe);
    }
    visitTerminal(pe) {
        this.terminals.push(pe);
        this.giveIndex(pe);
    }
    visitZeroOrMore(pe) {
        this.giveIndex(pe);
    }
    visitOneOrMore(pe) {
        this.giveIndex(pe);
    }
    visitOptional(pe) {
        this.giveIndex(pe);
    }
    visitAnd(pe) {
        this.giveIndex(pe);
    }
    visitNot(pe) {
        this.giveIndex(pe);
    }
    visitSequence(pe) {
        this.giveIndex(pe);
    }
    visitOrderedChoice(pe) {
        this.giveIndex(pe);
    }
    visitGrouping(pe) {
        this.giveIndex(pe);
    }
    visitRewriting(pe) {
        this.giveIndex(pe);
    }
    visitColon(pe) {
        this.giveIndex(pe);
    }
    visitColonNot(pe) {
        this.giveIndex(pe);
    }
    visitLake(pe) {
        this.giveIndex(pe);
    }
}
exports.Indexer = Indexer;
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