HP 3000 Manuals HP 3000 Manuals
Types of Processes The compile-time processes are divided into three types. These types are edit processing, source input modification, and list and compilation options. The first two processes mentioned above are independent of the compilation process. In effect, they constitute a "first pass" on your source program. The output of these preprocessor functions is released to the COBOL compiler. This output is referred to as the expanded source program. The editing process merges lines from an optional textfile into your masterfile and provides other functions such as deletion and replacement of lines of the masterfile. The end product of the editing process is a single input stream. The operating system's COBOL command, as well as the $EDIT and $INCLUDE preprocessor commands, are used to perform these editing operations. The source input modification process uses macros to modify your source code. This is done by using the $DEFINE preprocessor command to define the macros, and then placing the macro name in your source code. When the source code is compiled, the definition of the macro replaces the macro name. List and compilation options are provided to allow you to obtain compiler listings, source listings of the expanded source records, a symbol table map, the object code, a cross reference listing of symbols and procedures used in the source program, and a listing of statements appearing in the PROCEDURE DIVISION (as well as the line numbers in which they appear in the source code and their code offsets). These options are available through use of the $CONTROL preprocessor command. Compilation options include warnings of possible error conditions, limiting the number of compilation errors before halting compilation, initializing[REV BEG] the RL file, identifying the compiled code as being a subprogram[REV END] (dynamic or nondynamic etc.), enabling the operating system's debug facility, setting bounds checking on table indices, subscripts, and[REV BEG] reference modification, and flagging of HP extensions[REV END] in the source program. These options are also available through use of the $CONTROL preprocessor command.