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Build Your Own Programming Language

You're reading from   Build Your Own Programming Language A programmer's guide to designing compilers, interpreters, and DSLs for modern computing problems

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Product type Paperback
Published in Jan 2024
Publisher Packt
ISBN-13 9781804618028
Length 556 pages
Edition 2nd Edition
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Author (1):
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Clinton  L. Jeffery Clinton L. Jeffery
Author Profile Icon Clinton L. Jeffery
Clinton L. Jeffery
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Toc

Table of Contents (27) Chapters Close

Preface 1. Section I: Programming Language Frontends
2. Why Build Another Programming Language? FREE CHAPTER 3. Programming Language Design 4. Scanning Source Code 5. Parsing 6. Syntax Trees 7. Section II: Syntax Tree Traversals
8. Symbol Tables 9. Checking Base Types 10. Checking Types on Arrays, Method Calls, and Structure Accesses 11. Intermediate Code Generation 12. Syntax Coloring in an IDE 13. Section III: Code Generation and Runtime Systems
14. Preprocessors and Transpilers 15. Bytecode Interpreters 16. Generating Bytecode 17. Native Code Generation 18. Implementing Operators and Built-In Functions 19. Domain Control Structures 20. Garbage Collection 21. Final Thoughts 22. Section IV: Appendix
23. Answers
24. Other Books You May Enjoy
25. Index
Appendix: Unicon Essentials

Comparing bytecode assembler with binary formats

Bytecode machines tend to use simpler formats than native code, where binary object files are the norm. Some bytecode machines, such as Python, hide their bytecode format entirely or make it optional. Others, such as Unicon, use a human-readable assembler-like text format for compiled modules. In the case of Java, they seem to have gone out of their way to avoid providing an assembler, to make it more difficult for other languages to generate code for the Java virtual machine (VM).

In the case of Jzero and its machine, space limits motivate us to keep things as simple as possible. The byc class defines two output methods: print() for human-friendly text format and printb() for machine-friendly binary format. You can decide for yourself which one you prefer for any given application.

Printing bytecode in assembler format

The print() method in the byc class is similar to the one used in the tac class. One line of output is...

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