PYTHON BASED COMPILER Main Objective:

• To design a python based compiler and make it work with multiple languages. But until feature update it only supports limited syntax of python.

Requirements:

Here we are using “rply” modules for Lexer and parser. “llvmlite” module for code generator. And we are also using subprocess, random, string and tkinter modules.

• Python 3.7 or above

• LLVM 8.0 ( http://releases.llvm.org/download.html )

• Clang package (Visual Studio 15)

• LLC (LLVM static compiler)

Design:

Compiler Design | Introduction of Compiler design: https://www.geeksforgeeks.org/introduction-compiler-design/ This compiler is divided into three sections namely: Lexer, Parser and Code Generator.

Lexer:

• Lexical analysis is the first phase of a compiler.

• Lexical analyzer breaks syntaxes into a series of tokens.

Parser: The second component in our compiler is the Parser. Its role is to do a syntax check of the program. It takes the list of tokens as input and creates an AST as output.

Code Generator: The third and last component of out compiler is the Code Generator. It’s role is to transform the AST created from the parser into machine language or an IR. In this case, it’s going to transform the AST into LLVM IR.

Resources:

• Writing your own programming language and compiler with Python: https://blog.usejournal.com/writing-your-own-programming-language-and-compiler-with-python-a468970ae6df

• LLVMlite Documentation

• Rply Documentation

• Clang Documentation

• LLC Documentation