PL/0 Compiler

Written by Adam Dunson Last updated on 2012-04-23

PL/0 Wikipedia page

This was written as a class project in college. User's Manual located here.

This README.markdown is written in Markdown and contains instructions for the Linux operating system.

Compilation Instructions (GCC)

Prerequisites

You will need the make utility.

Instructions

From the project directory (where Makefile is located), run the following:

make

This will create binary .o files in the obj/ directory. The final executable will be located in bin/ and is called pl0-compiler.

To clean up .o and executable files, run the following:

make clean    # rm -f obj/*.o
make spotless # make clean; rm -f bin/*

Execution Instruction

You will need to provide an input file written in PL/0. Some examples are located in the sample/ directory.

To run the program after compiling, use the following:

bin/pl0-compiler /path/to/input_file

or just:

bin/pl0-compiler input_file

if the input file is in the current directory.

Command-line options

For more output, three command line flags are available.

bin/pl0-compiler -l -a -v input_file

or just:

bin/pl0-compiler -lav input_file

(or any combination thereof).

• -l (ell) displays both a raw and a pretty token file from the scanner
• -a displays the generated code in both a raw and a pretty format
• -v displays the stack trace for the virtual machine as it executes

Other Notes

You can redirect output to a file by using the following syntax:

bin/pl0-compiler input_file > output_file