https://github.com/morteza363831/simple-c-compiler

A simple compiler for C language
https://github.com/morteza363831/simple-c-compiler

antlr4 c compiler java lexer maven parser semantic-analyzer simple-compiler three-address-code

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A simple compiler for C language

• Host: GitHub
• URL: https://github.com/morteza363831/simple-c-compiler
• Owner: Morteza363831
• Created: 2025-02-04T09:26:02.000Z (11 days ago)
• Default Branch: master
• Last Pushed: 2025-02-10T12:55:48.000Z (5 days ago)
• Last Synced: 2025-02-10T13:39:33.590Z (5 days ago)
• Topics: antlr4, c, compiler, java, lexer, maven, parser, semantic-analyzer, simple-compiler, three-address-code
• Language: Java
• Homepage:
• Size: 51.8 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md

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README

        
# Simple C Language Compiler

This project is a **C language compiler** that includes a lexer, parser, semantic analyzer, and TAC (Three Address Code) generator. It was developed by [Morteza Mahdi Zadeh](https://github.com/Morteza363831) and [Soheil Nouhi](https://github.com/SoheilNouhi).

---

## 🚀 **Features**

### **1. Grammar**

The compiler uses **ANTLR** to define the grammar for the C language. The grammar supports the following features:

- **Function Declarations**: `int main() { ... }`

- **Statements**:

  - Expression statements (`x = 10;`)

  - Return statements (`return x;`)

  - Blocks (`{ ... }`)

  - Printf statements (`printf("value is %d", x);`)

  - Control structures:

    - **If-Else Statements** (`if (x < 10) { ... } else { ... }`)

    - **While Loops** (`while (x > 0) { ... }`)

    - **For Loops** (`for (int i = 0; i < 10; i++) { ... }`)

- **Variable Declarations and Assignments**:

  - Supported types: `int`, `float`, `char`, `void`

  - Example: `int x = 10;`

- **Expressions**:

  - Arithmetic operations (`+`, `-`, `*`, `/`, `^`)

  - Comparison operators (`<`, `>`, `<=`, `>=`, `==`, `!=`)

  - String, character, and numeric constants.

---

## 📂 **Project Structure**

The project is organized into the following packages:

- **`org.compiler.antlr`**: Contains the `CLang.g4` grammar file.

- **`org.compiler.lexer`**: Contains the `CLangLexer` for tokenizing the source code.

- **`org.compiler.parser`**: Includes:

  - `CLangParser` for parsing the tokens.

  - `CLangBaseListener` and `CLangBaseVisitor` interfaces and their implementations.

- **`org.compiler.semantic`**: Contains the `SemanticAnalyzer` for scope and type checking.

- **`org.compiler.tac`**: Contains:

  - `TacGenerator` for generating three-address code.

  - `TacInstruction` for representing TAC instructions.

---

## 🛠️ **Running the Compiler**

### **Clone the Repository**

```bash

git clone https://github.com/Morteza363831/compiler.git

cd compiler

```

### **Run the Main Program**

```bash

mvn exec:java -Dexec.mainClass="org.compiler.Main"

```

### **Build the Project**

```bash

mvn clean package

```

### **Run Using the Jar File**

A precompiled **JAR** file is available in the **Releases** section.

To run it :

```bash

java -jar compiler-1.0.jar

```

## 🤝 **Contributors**

Thanks to the following **developers** for their contributions:

- [Morteza Mahdi Zadeh](https://github.com/Morteza363831)

- [Soheil Nouhi](https://github.com/moonwinee)

### **Notes:**

- I added sections for features, contributors, and instructions for running the project.

- If there's any additional information you'd like, let me know!

#### **Contact with us**

- Morteza Mahdi Zadeh's email : [[email protected]]([email protected])

- Soheil Nouhi's email : [[email protected]]([email protected])