imp
Cwerg
imp | Cwerg | |
---|---|---|
2 | 59 | |
12 | 402 | |
- | - | |
0.0 | 9.6 | |
almost 2 years ago | 8 days ago | |
Java | Python | |
Apache License 2.0 | Apache License 2.0 |
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imp
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September 2021 monthly "What are you working on?" thread
In August I finished the module system for Imp. I’ve been designing Imp from the start to support the programmer’s confidence in their code, and the module system is no different. Imp is based on the JVM so each file eventually becomes one (or more) classes but that’s abstracted away from the user. This sub’s Discord has been so helpful for asking people about these concepts and for opinions on my design decisions.
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A work in progress C compiler from scratch
I've had good luck with ANTLR4 and ObjWeb ASM for my JVM language Imp https://github.com/mh15/imp
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?
OpenJ9 - Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.
mir - A lightweight JIT compiler based on MIR (Medium Internal Representation) and C11 JIT compiler and interpreter based on MIR
durin - the Dependent Unboxed higher-oRder Intermediate Notation
tinycc - Unofficial mirror of mob development branch
konna - A fast functional language based on two level type theory
asmjit - Low-latency machine code generation
ocean - Programming language that compiles into a x86 ELF executable.
bluebird - A work-in-progess programming language modeled after Ada and C++
flex - The Fast Lexical Analyzer - scanner generator for lexing in C and C++
asmdb - Instructions database and utilities for X86/X64 and ARM (THUMB/A32/A64) architectures.
pika - A WIP little dependently-typed systems language
boring-lang - A very boring programming language