klox
proguard-assembler
klox | proguard-assembler | |
---|---|---|
7 | 1 | |
17 | 63 | |
- | - | |
2.6 | 3.9 | |
about 2 years ago | 8 months ago | |
Kotlin | Java | |
MIT License | Apache License 2.0 |
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klox
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Using Advent of Code to test C3
Last year I did the same: using my extended implementation of Lox. I didn't get so far in Advent of Code itself (only 4 days) since I spent much more time adding features to the language / standard library! Standard Lox as implemented in the Crafting Interpreters book is lacking many useful things including input reading, arrays, collections like sets & hash maps. Example: https://github.com/mrjameshamilton/klox/blob/master/examples/aoc-2021/advent-day01.lox
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JEP draft: Classfile API
I was also experimenting in Kotlin with some higher-level helper functions for the ProGuardCORE code builder, like using code blocks for try-catch, switches etc
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Show HN: I spent my vacation writing a modern JVM assembler
Something else that could make your code generation for your JVM language easier: ProGuardCORE (https://github.com/Guardsquare/proguard-core). It can be used to read, generate and analyse Java bytecode.
Some examples for code generation: ProGuard where the project originated (https://github.com/Guardsquare/proguard), Brainf*ck compiler (https://github.com/mrjameshamilton/bf), Lox compiler (https://github.com/mrjameshamilton/klox)
Disclaimer: I work at Guardsquare on ProGuardCORE so may be biased ;)
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Looking for resources on building a compiler
I implemented Lox in Kotlin based on the book's Java interpreter then added a JVM backend using ProGuardCORE: https://github.com/mrjameshamilton/klox
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Crafting Interpreters – Web Version
It's a great book! I really liked how it guides step-by-step, always having something working building up to the full interpreter for Lox. I haven't yet gotten around to the 2nd part of the book (the C based interpreter/vm) because I got carried away with adding extra features to my Kotlin Lox implementation (including a JVM backend)! https://github.com/mrjameshamilton/klox
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Is there any books or guides on how to target JVM bytecode?
Not a book or guide but a useful library for working with/generating JVM class files is ProGuardCORE. It's the underlying library used by ProGuard and I also recently used it to add a JVM backend to my implementation of Lox from the Crafting Interpreters book.
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Concise language to write an interpreter for?
My implementation can be found here: https://github.com/mrjameshamilton/klox
proguard-assembler
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Show HN: I spent my vacation writing a modern JVM assembler
Nice project! At Guardsquare, we have a similar project: https://github.com/Guardsquare/proguard-assembler
One of the things we use it for is testing: we can craft specific bytecode sequences that we want to test; for example, it's useful to test cases we've seen in the wild (e.g. obfuscated code) or to create a test that doesn't rely on a specific compiler/version.
An example of using the assembler from a ProGuard unit test https://github.com/Guardsquare/proguard/blob/master/base/src...
What are some alternatives?
proguard-core - Library to read, write, analyze, and process java bytecode
Maker - Lightweight, full-featured, low-level dynamic Java class generator designed for ease of use.
Grasmin - Groovy AST Transformation to allow writing Jasmin code (JVM bytecode) directly on groovy files
jasm - A JVM assembler for the modern age
kotlin-native - Kotlin/Native infrastructure
bf - An optimizing brainf*ck compiler with multiple target backends: JVM, smali, dex, C, LLVM IR, ARM, WASM, JavaScript and Lox.
YAIL - Programming language where you can code using emojis 😌
jlox-plus - Jlox+ is a superset of the Lox programming language!
proguard - ProGuard, Java optimizer and obfuscator