The Macro Language

The Icam macro language is used for the customization of Virtual Machine models, as well as for the customization of Icam Post post-processors and Icam control emulators. Model macros share the same macro environment as the post-processor and control emulator, giving them full access to system variables as well as user defined global variables. However, care should be taken to clearly separate the macro functions necessary in the model, from those necessary in the post-processor (GENER) or control emulator (CERUN).

For example, global variables used in model macros should be defined (using “object” scoping) in the model Declaration macro, and not in the Declaration macro of the post or control emulator. This ensures that the model is fully self-contained and can be used with another post-processor or control emulator if desired without undue changes.

Model macros should not generate post-processor commands. This is because the model customization environment is not post-processor command based; therefore, any post-processor command contained in a model macro will have to be interpreted by GENER. This makes the model unavailable for use with CERUN, which does not recognize post-processor commands.