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 and Soheil Nouhi.

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.

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.

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

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

mvn clean package

A precompiled JAR file is available in the Releases section. To run it :

java -jar compiler-1.0.jar

Thanks to the following developers for their contributions:

• Morteza Mahdi Zadeh
• Soheil Nouhi

• I added sections for features, contributors, and instructions for running the project.
• If there's any additional information you'd like, let me know!

• Morteza Mahdi Zadeh's email : [email protected]
• Soheil Nouhi's email : [email protected]