On 04 Sep 2016, at 20:48, Serge Stinckwich <serge.stinckwich@gmail.com> wrote:

I have one question about Opal Compiler.

I would like do an AST transformation before using the compiler. If I understand correctly, I have to built a subclass of OCCompilerASTPlugin ? Is it correct ?

Yes. See the example ASTPluginMeaningOfLife Plugins are not active by default, you need to compile with a compiler that includes your plugin. e.g. add on the class side compiler "the example plugin is active for this class" ^super compiler addPlugin: ASTPluginMeaningOfLife. to enable it for this hierarchy. ( see ASTTransformExamplePluginActive )

Any documentation more update about Opal than this : https://github.com/SquareBracketAssociates/PharoLimbo/tree/master/Opal

There is the paper: https://marcusdenker.de/publications/Bera13a-OpalIWST.pdf But it is not a tutorial. Marcus