How to - some help needed for creating syntax extensions

[Valeri Atamaniouk]

Hello

I'm trying to adapt some new language extensions for C
compiler, 
Silly question:
is there any info available how to emit code for new
constructs and override behavior for existing ones?
Not so silly question:
Does anyone know, what to do, if I want to :
1) introduce new block element
2) oveeride constructs for jumping in/out and
returning from that block.
3) make the code geneerator architecture independent
to the largest extent possible

BR
VA

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