static.js

/*
	static
	Static analysis algorithm for the 'hybrid' JDCE tool.

	Statically analyze the source, then returns a list of functions to remove.
	Static analysis tool copied & adapted from https://github.com/abort/javascript-call-graph
*/


const Graph = require('../graph'),
      GraphTools = require('../graph_tools'),
      static_analyzer = require('./static/static');



module.exports = function()
{
	this.run = function(settings, callback)
	{
		let called_functions = static_analyzer(settings.scripts, settings.html_file);

		// called_functions contains an array with the following object:
		// {caller: {file, start, end}, called: {file, start, end} }
		called_functions.forEach(function(funcs)
		{
			try
			{
				let called = GraphTools.find_node(funcs.called, settings.nodes)

				if( funcs.caller.start == null && funcs.caller.end == null )
				{
					caller = settings.base_node;
				}else{
					caller = GraphTools.find_node(funcs.caller, settings.nodes);
				}

				GraphTools.mark( caller, called, settings.fingerprint );
			}catch(e)
			{
				settings.error_handler('static', e);
				callback(false);
			}
		});

		callback(true);
	};
};