EXTLex

Introduction

EXTLex is a lexical analyser for compilers. It is developed in Java and provides a framework for error detection during lexical analysis.

Installation

Since EXTLex is a pre-compiled Java project, it requires no installation. Simply make sure you have Java >1.8 installed in your machine, download the project and place it in a folder of your choice.

Running

To run EXTLex, you will first need to provide the input files it requires, which are:

• Automata File: File containing the finite automata that describes the language to be analysed.
• Reserved Words File: File containing the reserved words of the language to be analysed.
• Code File: The file with the code to be analysed.

For more information on how to create the Automata File and the Reserved Words File, please refer to the "Creating a language for EXTLex.pdf" guide included in this project. Once you have produced all required files, simply run the following command line:

java -jar EXTLex.jar <automata_file> <reserved_words_file> <code_file>

The output will be provided in STDOUT. You can also import EXTLex into your Java project and use its classes and functions to create your own compiler.

Support

If you have any problems or questions about the toolkit, simply report it in the issues section of the project's Github page.