PyCompile

PyCompile is a simple and intuitive compiler for a custom programming language. It takes source code as input, tokenizes it, parses it into a syntax tree, and performs semantic analysis. The project is designed to be educational, demonstrating how a compiler works from source code to execution.

Features

• Lexical Analysis: Tokenizes the input source code.
• Syntax Analysis: Parses tokens into a syntax tree.
• Semantic Analysis: Checks for semantic errors.
• Intermediate Representation: Generates an intermediate representation of the code.
• Code Generation: Generates low-level code from the intermediate representation.
• Assembly Generation: Converts low-level code to assembly instructions.
• Virtual Machine: Executes the generated assembly instructions.
• Command-Line Interface: Simple interface to compile and execute source code files.

Table of Contents

• Installation
• Usage
• Examples
• Project Structure
• Classes and Methods
• Testing
• Contributing
• License

Installation

To install and set up PyCompile, follow these steps:

1. Clone the repository:

   git clone https://github.com/Devansh-46/PyCompile.git

2. Navigate to the project directory:

   cd PyCompile

3. Install the required dependencies:

   pip install -r requirements.txt

Usage

To use the compiler, run the main.py script with the path to your source code file as an argument:

python main.py <path_to_source_code>

Examples

Create a file named example.src with the following content:

def add(x, y) {
    x + y
}

z = add(5, 3);
print(z);

Run the compiler:

python main.py example.src

Project Structure

PyCompile/
├── main.py
├── lexer.py
├── parser.py
├── semantic_analyzer.py
├── ir_generator.py
├── code_generator.py
├── assembly_generator.py
├── vm.py
├── node.py
├── mytoken.py
└── tests/
    ├── test_lexer.py
    ├── test_parser.py
    ├── test_semantic_analyzer.py
    ├── test_ir_generator.py
    ├── test_code_generator.py
    ├── test_assembly_generator.py
    └── test_vm.py

• main.py: Entry point for the compiler. Handles reading input files and orchestrating the compilation process.
• lexer.py: Handles lexical analysis, converting source code into tokens.
• parser.py: Handles syntax analysis, converting tokens into a syntax tree.
• semantic_analyzer.py: Performs semantic checks on the syntax tree.
• ir_generator.py: Generates an intermediate representation of the code.
• code_generator.py: Generates low-level code from the intermediate representation.
• assembly_generator.py: Converts low-level code to assembly instructions.
• vm.py: A virtual machine to execute the generated assembly instructions.
• node.py: Defines the Node class used in the syntax tree.
• mytoken.py: Defines the Token class used in lexical analysis.
• tests/: Contains test cases for various components of the compiler.