/*
 * SpiderMonkey host environment
 */

if (djConfig["baseUrl"]) {
	dojo.baseUrl = djConfig["baseUrl"];
} else {
	dojo.baseUrl = "./";
}

dojo._name = 'spidermonkey';
dojo.isSpidermonkey = true;
dojo.exit = function(exitcode) {
	quit(exitcode);
}

if (typeof print == "function") {
	console.debug = print;
}

if (typeof line2pc == 'undefined') {
	throw new Error("attempt to use SpiderMonkey host environment when no 'line2pc' global");
}

dojo._spidermonkeyCurrentFile = function(depth) {
	//	
	// This is a hack that determines the current script file by parsing a
	// generated stack trace (relying on the non-standard "stack" member
	// variable
	// of the SpiderMonkey Error object).
	//	
	// If param depth is passed in, it'll return the script file which is that
	// far down
	// the stack, but that does require that you know how deep your stack is
	// when you are
	// calling.
	//	
	var s = '';
	try {
		throw Error("whatever");
	} catch (e) {
		s = e.stack;
	}
	// lines are like:
	// bu_getCurrentScriptURI_spidermonkey("ScriptLoader.js")@burst/Runtime.js:101
	var matches = s.match(/[^@]*\.js/gi);
	if (!matches) {
		throw Error("could not parse stack string: '" + s + "'");
	}
	var fname = (typeof depth != 'undefined' && depth)
			? matches[depth + 1]
			: matches[matches.length - 1];
	if (!fname) {
		throw Error("could not find file name in stack string '" + s + "'");
	}
	// print("SpiderMonkeyRuntime got fname '" + fname + "' from stack string '"
	// + s + "'");
	return fname;
}

// print(dojo._spidermonkeyCurrentFile(0));

dojo._loadUri = function(uri) {
	// spidermonkey load() evaluates the contents into the global scope (which
	// is what we want).
	// TODO: sigh, load() does not return a useful value.
	// Perhaps it is returning the value of the last thing evaluated?
	var ok = load(uri);
	// console.debug("spidermonkey load(", uri, ") returned ", ok);
	return 1;
}

// Register any module paths set up in djConfig. Need to do this
// in the hostenvs since hostenv_browser can read djConfig from a
// script tag's attribute.
if (djConfig["modulePaths"]) {
	for (var param in djConfig["modulePaths"]) {
		dojo.registerModulePath(param, djConfig["modulePaths"][param]);
	}
}