Compiler/Preprocessor: Difference between revisions

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To make it easier to find, the usage will be within hashtags, and replaces its usage elsewhere in the files processed. These usages will be processed everywhere they are encountered without regard to the syntax of the sample language. The calling arguments replace the define's parameters as a simple string substitution. You may not assume the usage proceeds in an order to form complex combinations. Tokens detected during definition processing can remain separated during usage processing. If the contents within the double hashtags is not a valid macro usage, its entire text is written to the output as if it was not detected. It is not required to use the ending hashtag as the start of another macro usage as we are going for as simple an example as possible to show concept.

There are three possible command line arguments, debug, input, and output. Debug is an implementer depended switch such as -d or --debug to allow the user to pick between the commands vanishing from the output or the commands appearing as comments in the output. Debug can be specified in any order on the command line beyond the command. Input is the file to process, when missing the console input is used. The Input is always specified before the Output. Output is the file to create, when missing the console output is used. If only one file is specified, it is the input file. If you wish to use an output file and console input, you must specify both arguments, who's usage is left up to the implementer.

There are three possible [optional] command line arguments, debug, input, and output. Debug is an implementer depended switch such as -d or --debug to allow the user to pick between the commands vanishing from the output or the commands appearing as comments in the output. Debug can be specified in any order on the command line beyond the command. Input is the file to process, when missing the console input is used. The Input is always specified before the Output. Output is the file to create, when missing the console output is used. If only one file is specified, it is the input file. If you wish to use an output file and console input, you must specify both arguments, who's usage is left up to the implementer.