[cfe-dev] Chaining ASTConsumers

[Mohamed Yousef]

Hello ,

I'm writing a source to source tool, according to list prefred way is
Rewriter class , but also i can modify list by a series of traversals

the problem is Rewriter class method is really primitive,, isn't suitable
for big changes (esp. in structure )

what i'm asking for is, can i chain ASTConsumer's ,,so i can progressively
modify AST and pretty-print it finally
but it looks like (from ParseAST) i would have to Parser -> ASTConsumer ->
pretty-print ->Parser ->ASTConsumer -> .. and so on
which is very tedious

is the there an explicit AST data structure ? can i just parse once and
modify resulting AST many times  (traverse,add/delete nodes it not re-parse
source) ?

Thanks,
Mohamed Yousef
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