Write a compiler for brainfunk
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Write a compiler for brainfunk

About the Book

This book covers writing all the usual tools we use as software developers for a tiny language named brainfuck (sorry for the typo in the main title).

Presenting all the tools and keep the book small was possible because of the few features of the language.

The downside is that writing a program using this language is something I do not recommend to any of you.

But if you want to know what involves writing programming tools for developers, then brainfuck is a great language.

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  • Categories

    • Computers and Programming
    • Ruby
    • JavaScript
    • Automated Software Testing
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About the Author

Jean Lazarou
Jean Lazarou

Developer of applications for 30 years now, creating tools to make life easier, read more and more and publishing articles.

We should be able to explain what we really understand...

Table of Contents

  • 1. Preface
  • 2. Introduction
  • 3. The language definition
    • 3.1. Syntax
    • 3.2. Semantics
    • 3.3. Language extensions
    • 3.4. Example
  • 4. The language implementation
    • 4.1. The Tokenizer
    • 4.2. The Compiler
    • 4.3. The Virtual Machine
  • 5. More robust, more complex…
    • 5.1. Running all the tests
    • 5.2. The Tokenizer
    • 5.3. The Compiler
  • 6. Optimizer
    • 6.1. Tests covering the optimization cases
    • 6.2. Implementation of the optimizer
    • 6.3. Edge cases
  • 7. Running optimized code
    • 7.1. Tests for the new instructions
    • 7.2. Optimized code benchmarking
  • 8. JIT compilation
    • 8.1. Manual JIT compilation
      • 8.1.1. Step 1: Replace instructions
      • 8.1.2. Step 2: Replace constants
      • 8.1.3. Step 3: Merge items
      • 8.1.4. Step 4: Handle the gotos
      • 8.1.5. Step 5: Do not use runtime class
      • 8.1.6. Conclusion
    • 8.2. JIT compiler
      • 8.2.1. Implementation
      • 8.2.2. Testing the JIT compiler
    • 8.3. JIT compiled code benchmarking
  • 9. Command line interface
    • 9.1. Command line options
    • 9.2. Compile a program (rbfc)
    • 9.3. Run a program (rbfr)
  • 10. Bytecode verifier
    • 10.1. Valid bytecodes
    • 10.2. Valid arguments for bytecodes
    • 10.3. Valid indexes for jump bytecodes
    • 10.4. Valid bytecodes sequence
  • 11. Development tools
    • 11.1. The debug instruction
      • 11.1.1. The Runtime class
      • 11.1.2. The Debugger class
    • 11.2. Code mapping
      • 11.2.1. Additional APIs
      • 11.2.2. Note
    • 11.3. A debugger
      • 11.3.1. Running the debugger
      • 11.3.2. The debugger shell
  • 12. Let’s get really funky
    • 12.1. Transpile the source code
    • 12.2. Browser dev-tools integration
      • 12.2.1. Mappings to the JavaScript code
      • 12.2.2. Numbers encoding in the MAP files
      • 12.2.3. Implementation of the numbers encoding
      • 12.2.4. MAP file generation
  • 13. Check all tests pass…
  • 14. Last word
    • 14.1. The project’s structure
    • 14.2. The Ruby version
  • 15. Links
    • 15.1. The brainfuck language
    • 15.2. Machine code, machine instructions
    • 15.3. JavaScript
      • 15.3.1. Generator functions
      • 15.3.2. Map files
      • 15.3.3. Ecosystem of JavaScript
      • 15.3.4. Project repository
  • 16. Examples
    • 16.1. A simple echo one characater program
    • 16.2. A real echo program
    • 16.3. The cat program
    • 16.4. The Hello world program

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