xtext

I just came across very nice tool Xtext to create DSL as well as IDE for editing. I did some search on the web and found people saying it does not provide all the features of ANTLR. I am using ANTLR as my parser generator. I am not even sure what features of ANTLR I will need to write complete parser for my language but ANTLR is around for quite a long time and probably supports more features than Xtext. Can anyone please give some examples of what CANNOT be specified in a Xtext grammar? You cannot specify semantic predicates in an Xtext grammar. Furthermore it's not possible to include

I have implemented a simple little DSL that generates classes from input files, by using the JvmModelInferrer approach. I am trying to figure out how I can invoke the parser and the code genarator within the code of a regular java project. So at some point in the main class of my non-Xtext project I can just create a file, pass it to the Xtext parser/codeGenerator for my DSL, and the result will be that class files are generated to a folder of my choice (within my java project). This case is not covered in the documentation, so any help would be much appreciated, Thanks! UPDATE: My code so far

I get many "Unknown property" warnings in my css files. This might be due to the fact that I have e(fx)clipse 2.0 and the Eclipse Web Developer Tools installed. If I open the css files with the e(fx)clipse css editor and add / SuppressWarnings / the warning icon changes its color (see figure below). However: the Problems view still shows the warning and the default css Editor shows the warning, too. I do not want to add / SuppressWarnings / since the css files are automatically generated with WinLess. How can I disable the "Unknown property" warnings for specific files or at all? My css files

How can I use Xtext to parse languages with semantic whitespace? I'm trying to write a grammar for CoffeeScript and I can't find any good documentation on this. AFAIK, you can't. In case of parsing Python-like languages, you'd need the lexer to emit INDENT and DEDENT tokens. For that to happen, you'd need semantic predicates to be supported inside lexer rules (Xtext's terminal rules) that would first check if the current-position-in-line of the next character int the input equals 0 (the beginning of the line) and is a ' ' or '\t' . But browsing through the documentation , I don't see this is