ocean
Cwerg
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ocean | Cwerg | |
---|---|---|
9 | 59 | |
167 | 398 | |
- | - | |
0.0 | 9.6 | |
over 1 year ago | 2 days ago | |
C | Python | |
BSD 3-clause "New" or "Revised" License | Apache License 2.0 |
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ocean
- A work-in-progress C compiler from scratch
- Show HN: A work-in-progress C compiler from scratch
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A work in progress C compiler from scratch
Can't edit my original reply anymore, but fair point, I've changed the keyword 'function' in the AST to a function return type instead. There's no error handling done yet to check whether the variable receiving the function return data matches the function return type, but it's on my todo list.
https://github.com/riicchhaarrd/ocean/commit/0618e0810c8d437...
Then again in C it would work aswell if you type casted the types.
const char *f()
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Hacker News top posts: Aug 3, 2021
Show HN: A work in progress C compiler from scratch\ (0 comments)
Cwerg
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Cwerg: C-like language that can be implemented in 10kLOC
Perhaps these have already been dealt with and I'm missing critical information. If so, my apologies. Great work, in any case.
[1] https://github.com/robertmuth/Cwerg/tree/master/FrontEnd#dis...
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Where can I find resources and guides on how to build compiler backends?
Cwerg has backend that can be used as JIT and is written with readability in mind. Additional documentation can be found here: https://github.com/robertmuth/Cwerg/tree/master/Docs
- Most important language features not touched in the book "Crafting Interpreters"?
- Lack of resources in creating Assemblers from scratch.
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Minimum ISA Capabilities to Support Most (Non-Interactive) Programs?
I defined a basic ISA-like IR for Cwerg. It has unlimited registers and no constraints on immediates.
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How do you design a compiler and a language?
entire compiler front end ast nodes
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Syntax Design
I was also going down the path of bike shedding concrete syntax for my language Cwerg before pulling the plug on that effort and just using s-exprs. I managed to make the s-expr quite succinct by carefully choosing the order of arguments so I can omit optional ones. Also very helpful was to use square brackets for list, e.g. (call fun-name [arg1 arg2]). This simplifies parsing a little bit and is easier on the eye. Here are some Code Examples
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November 2022 monthly "What are you working on?" thread
I am iterating over the languages features for Cwerg's Frontend which aims to be a low level language with about the complexity of C but with some of the comforts of modern languages. I am especially happy with the choice of adding sum types. Relative to C the current feature set looks like this: Removed: * arrays decay to pointers * bitfields * separate compilation (more of a backend issue) * pre-processor * varargs * implcit type conversions * (untagged) unions * ++/-- * comma operator * implicitly nullable pointers * goto
- typed asts and codegen
- Features Compendium
What are some alternatives?
imp - Imp is a statically typed and compiled scripting language with the goal of increasing programmer confidence.
mir - A lightweight JIT compiler based on MIR (Medium Internal Representation) and C11 JIT compiler and interpreter based on MIR
mini-c - Dr Strangehack, or: how to write a self-hosting C compiler in 10 hours
tinycc - Unofficial mirror of mob development branch
shecc - A self-hosting and educational C optimizing compiler
asmjit - Low-latency machine code generation
flex - The Fast Lexical Analyzer - scanner generator for lexing in C and C++
bluebird - A work-in-progess programming language modeled after Ada and C++
ravi-compiler - Parser and compiler for Ravi and Lua
konna - A fast functional language based on two level type theory
llvm-project - The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
boring-lang - A very boring programming language