Pruning the Graph.

When the source program is large, it is often desirable to exclude some nodes from the graph. For example, we might want to omit the standard C header files when displaying the AST. To exclude source files from the output graph, create a file, say exclude.ast, that has a list of the source files to be omitted. This exclusion file might look something like the following:

    /usr/include/bits/types.h
    /usr/include/libio.h
    /usr/include/math.h
    /usr/include/stdio.h

Note that the format of the exclusion file requires that each excluded file reside on a separate line. Once this exclusion file is created, the the exclude flag can be passed to the visualization phase by invoking C-Breeze as follows:

    % cbz ... -vcgAST exclude:exclude.ast