Java-Compiler

This is a simple demonstration of how to make a language compiler using Python's PLY module. The project implements a lexer, parser and interpreter for Java.

Installation

To install locally, do the following:

1. Ensure that the following things have been installed:

   a. python (Installed based on your distro)

   b. pip (curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && python get-pip.py)

   c. virtualenv

2. Open up a terminal.

3. Create a directory somewhere mkdir java-compiler-env and cd into it.

4. Create a python virtual environment python -m virtualenv .

5. Activate the virtual environment source bin/activate

6. Navigate to the project's root directory where setup.py file is located.

7. Do a pip install .

Java Console

Once the installation is complete, you can test the compiler by running the java console by running the command: java-console. Start creating variables and run arithematic commands.

Functionalities Supported:

• Variables:

  • Declaration, assignment, access
  • Types: int, double, char, strings, bool
  • Initialisation and declaration of a variable with the name of a pre existing variable would generate error
  • Types of the data and the variable should match while declaring or initialising

• Array:

  • Declaration, assignment, access
  • Types: int, double, char, strings, bool
  • Access outside the array-size would give an error

• Arithematic Expressions:

  • Operators: (+ , - , / , * , % , ++, --, nested parentheses)

• Standard Output:

  • System.out.print()
  • Any variable-type should be displayed

• Error Handling:

  • Mentions the reason for error