DR Compiler

DR Language & Compiler DR is a custom programming language designed and built from scratch, along with its own compiler, as part of a deep exploration into compiler design, programming language theory, and software engineering. This project implements the complete compilation pipeline—from lexical analysis to syntax parsing and semantic analysis—turning raw .dr source code into structured, validated executable logic. DR was created to understand how real programming languages work under the hood by building every compiler component manually. Project Overview The project introduces a new programming language called DR, featuring its own syntax, grammar rules, keywords, data types, operators, and execution model. The compiler reads .dr source files and processes them through multiple stages: Lexical Analysis (Scanner) Breaks source code into tokens such as: Keywords Identifiers Numbers Operators Symbols String literals Syntax Analysis (Parser) Builds a parse tree based on the language grammar and validates program structure. Semantic Analysis Performs: Symbol table generation Variable declaration validation Type checking Scope validation Duplicate identifier detection Error Handling Provides meaningful compile-time error messages with line tracking for easier debugging. Language Features DR currently supports: Variable declarations Primitive data types Arithmetic operations Conditional statements Loops Functions Nested scopes Custom syntax rules .dr source files Technologies Used C# .NET Object-Oriented Programming Compiler Design Data Structures Parsing Algorithms Tokenization Abstract Syntax Trees Symbol Tables Why This Project Matters Building a programming language from scratch demonstrates strong knowledge in: Problem Solving System Design Algorithm Design Language Theory Low-level software architecture This project reflects the ability to design complex software systems beyond traditional application development. Future Enhancements Abstract Syntax Tree Visualization Intermediate Code Generation Bytecode Generation Optimization Passes GUI-based IDE for DR Language Syntax Highlighting Debugger Integration