/// <summary> /// Generates valid JavaScript code from the given node /// </summary> /// <returns>string representation of the JavaScript code for this node</returns> public virtual string ToCode() { using (var writer = new StringWriter(CultureInfo.InvariantCulture)) { JsOutputVisitor.Apply(writer, this, Parser.Settings); return(writer.ToString()); } }
/// <summary> /// Crunched JS string passed to it, returning crunched string. /// The ErrorList property will be set with any errors found during the minification process. /// </summary> /// <param name="source">source Javascript</param> /// <param name="codeSettings">code minification settings</param> /// <returns>minified Javascript</returns> public string MinifyJavaScript(string source, JsSettings codeSettings) { // default is an empty string var crunched = string.Empty; // reset the errors builder m_errorList = new List <MinifierError>(); // create the parser from the source string. // pass null for the assumed globals array var parser = new JsParser(source); // file context is a property on the parser parser.FileContext = FileName; // hook the engine error event parser.CompilerError += OnJavaScriptError; try { var preprocessOnly = codeSettings != null && codeSettings.PreprocessOnly; var sb = new StringBuilder(); using (var stringWriter = new StringWriter(sb, CultureInfo.InvariantCulture)) { if (preprocessOnly) { parser.EchoWriter = stringWriter; } // parse the input var scriptBlock = parser.Parse(codeSettings); if (scriptBlock != null && !preprocessOnly) { // we'll return the crunched code if (codeSettings != null && codeSettings.Format == JsFormat.JSON) { // we're going to use a different output visitor -- one // that specifically returns valid JSON. if (!JsonOutputVisitor.Apply(stringWriter, scriptBlock)) { m_errorList.Add(new MinifierError( true, 0, null, null, null, this.FileName, 0, 0, 0, 0, JScript.InvalidJSONOutput)); } } else { // just use the normal output visitor JsOutputVisitor.Apply(stringWriter, scriptBlock, codeSettings); } } } crunched = sb.ToString(); } catch (Exception e) { m_errorList.Add(new MinifierError( true, 0, null, null, null, this.FileName, 0, 0, 0, 0, e.Message)); throw; } return(crunched); }