Compiler

A compiler for C-subset language implemented in Python

English | 中文

Pipeline

Source Code → Lexer → Parser → Semantic → IR → ASM

Features:

• Lexer (Tokenization)
• Recursive Descent Parser + AST
• Semantic Analysis + Symbol Table
• Quadruple IR Generation
• 16-bit x86 ASM CodeGen
• CLI + GUI + Web Interface
• Web UI with adaptive light/dark theme and Chinese / English switcher

Quick Start

git clone https://github.com/zhouder/compiler.git
cd compiler
python src/main.py examples/test.c

Note: The output/ directory is empty on first clone. Running the commands above will generate the output files automatically.

Output files:

• output/test.tokens.txt — Tokens
• output/test.ast.txt — AST
• output/test.ir.txt — IR (Quadruples)
• output/test.asm — ASM (x86)

Visual Interface

# GUI
python src/gui.py

# Web (visit http://127.0.0.1:8000)
python -B src/webapp.py

Project Structure

compiler/
├── examples/
│   └── test.c              # Test source
├── src/
│   ├── lexer/              # Lexer
│   ├── parser/            # Parser + AST
│   ├── semantic/          # Semantic Analysis
│   ├── ir/                # IR Generation
│   ├── codegen/           # Code Generation
│   ├── main.py            # CLI entry
│   ├── gui.py             # GUI entry
│   └── webapp.py          # Web entry
└── output/                # Generated files

Supported Features

Feature	Description
Types	int, char, float, void
Struct, Pointer	User-defined types
Functions	Definition, parameters, calls
Arrays, Struct Variables	Complex data types
Expressions	Arithmetic, relational, logical
Control Flow	if/else, while, for, do while
I/O	printf, scanf
Type Checking	Scope, symbol table, type checking

ASM Verification

Requires DOSBox for 16-bit execution (replace D:\compiler\output with your actual output/ path):

mount c D:\compiler\output
c:
masm test.asm;
link test.obj;
test

License

MIT License — see LICENSE