Call graph for the KaTeX Parser

ParserCallGraph.js

"use strict";

var fs = require("fs");

var src = fs.readFileSync("src/Parser.js", "utf-8");
var match;
var defined = {};
var callers = {};
var curMethod = "TOP";
var re = /Parser\.prototype\.([A-Za-z0-9_]+)|this\.([A-Za-z0-9_]+)/g;
while ((match = re.exec(src))) {
    if (match[1]) {
        curMethod = match[1];
        defined[curMethod] = true;
    } else {
        var name = match[2];
        callers[name] = callers[name] || {};
        callers[name][curMethod] = true;
    }
}
defined = Object.keys(defined);
defined.sort();
defined.forEach(function(name) {
    var c = Object.keys(callers[name] || {});
    c.sort();
    c.forEach(function(caller) {
        console.log(caller + " -> " + name + ";");
    });
});