Udemy – Compiler Frontend & DSL Development with Flex & Bison

Most computer science courses teach compiler theory only with abstract formulas and diagrams. This course turns theory into working code. You will learn how real-world lexers and parsers work by building six complete, runnable compiler frontend projects using Flex (lexical analyzer) and Bison (parser generator).

What makes this course unique:

You will not only learn grammar rules or theoretical LR parsing. You will hand-code and debug industrial-style parsers that support variables, arithmetic expressions, functions, file input, error handling, and custom domain-specific languages.

Throughout this course, you will build:

• A basic calculator expression parser
• A configuration file parser
• A custom mathematical formula engine with max/min/abs functions
• A structured log parser for server log analysis
• A mini SQL SELECT statement parser
• A fully functional custom DSL supporting variables, assignments and file execution