public static bool Apply(TextWriter writer, AstNode node)
{
if (node != null)
{
var visitor = new JSONOutputVisitor(writer);
node.Accept(visitor);
return visitor.IsValid;
}
return false;
}
public static bool Apply(TextWriter writer, AstNode node)
{
if (node != null)
{
var visitor = new JSONOutputVisitor(writer);
node.Accept(visitor);
return(visitor.IsValid);
}
return(false);
}
/// <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, CodeSettings codeSettings)
{
// default is an empty string
var crunched = string.Empty;
// reset the errors builder
m_errorList = new List <ContextError>();
// 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
{
if (codeSettings != null && codeSettings.PreprocessOnly)
{
// just run through the preprocessor only
crunched = parser.PreprocessOnly(codeSettings);
}
else
{
// parse the input
var scriptBlock = parser.Parse(codeSettings);
if (scriptBlock != null)
{
// we'll return the crunched code
if (codeSettings != null && codeSettings.Format == JavaScriptFormat.JSON)
{
// we're going to use a different output visitor -- one
// that specifically returns valid JSON.
var sb = new StringBuilder();
using (var stringWriter = new StringWriter(sb, CultureInfo.InvariantCulture))
{
if (!JSONOutputVisitor.Apply(stringWriter, scriptBlock))
{
m_errorList.Add(new ContextError(
true,
0,
null,
null,
null,
this.FileName,
0,
0,
0,
0,
JScript.InvalidJSONOutput));
}
}
crunched = sb.ToString();
}
else
{
// just use the normal output visitor
crunched = scriptBlock.ToCode();
}
}
}
}
catch (Exception e)
{
m_errorList.Add(new ContextError(
true,
0,
null,
null,
null,
this.FileName,
0,
0,
0,
0,
e.Message));
throw;
}
return(crunched);
}