The major data structure of the CCA is a list of sublists, hereafter refered to as the ``meta-list''. Each sublist contains:
The meta-list is generated and returned by the process_file() subroutine. This subroutine scans the input file and fills in the Directive, Expression, and Line Num elements of each sublist. This list is then sent to verify_cclogic() in a read-only manner. Upon completion of verify_cclogic(), if graphical output is to be generated, then the meta-list is sent to assign_postion(), where the Block x, Physical y, Logical x, and Physical x fields of each sublist are filled in. These last four pieces of data relate to the positioning of symbols in our graphical output. Next, the meta-list is sent to the gen_image() subroutine where the PostScript code is generated for the graphical output. Finally, gen_report() receives the meta-list and uses it to create a textual analysis report on the input file.