34.1 User pass

Bigloo allows the user to add a special pass to the regular compilation, this pass taking place before macro expansion. There are two ways to add a user pass.

• Add a compiled pass: The module user_user (in the “comptime/User/user.scm” file) is the user entry pass point. To add a compiled pass, put the code of the pass in this directory, import your new modules in user_user and modify the user-walk function.
• Add an interpreted pass: Set the value of *user-pass*, which has to be a unary function, in your .bigloorc file and Bigloo will invoke it with the code as argument.

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