[cfe-dev] How to add a token stream filter to clang

[chenrui@sunwiseinfo.com via cfe-dev]

Hi,
I want the front end to ignore some dialect token, like the following example: 

// interrupt and using is dialect extension syntax
void cint() interrupt 1 using 2
{
 ...
}

Firstly, I will extend the TokenKind.def to make 'interrupt' and 'using' be the keyword;
After the preprocessor and lexer make the code to token stream, I want to do something to filter the dialect-related tokens so that the token stream passed to the parser is clang-compatible. I don't need to extend the AST. Ignoring the dialect extensions is fine to me.

So my question is , which part should I modify or extend to implement the above functionality?

Thanks,

Chen Rui

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