pegisland/dist/src/GraphPrinter.js

General PEG-based parser supporting island grammars with lake symbols

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.genDot = void 0;
// Copyright (C) 2022- Katsumi Okuda.  All rights reserved.
const ts_graphviz_1 = require("ts-graphviz");
function genDot(peg, parentsMap) {
    const g = (0, ts_graphviz_1.digraph)('G');
    const nodes = new Map();
    [...peg.rules.values()].forEach((rule) => {
        const node = g.createNode(rule.symbol);
        nodes.set(rule, node);
    });
    [...peg.rules.values()].forEach((rule) => {
        if (parentsMap.has(rule)) {
            const parents = [...parentsMap.get(rule)];
            const to = nodes.get(rule);
            parents.forEach((parent) => {
                const from = nodes.get(parent);
                g.createEdge([from, to]);
            });
        }
    });
    return (0, ts_graphviz_1.toDot)(g);
}
exports.genDot = genDot;
//# sourceMappingURL=GraphPrinter.js.map