rust-langdev
inko
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rust-langdev | inko | |
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12 | 11 | |
822 | 711 | |
- | 8.0% | |
3.2 | 9.4 | |
21 days ago | 6 days ago | |
Rust | ||
The Unlicense | Mozilla Public License 2.0 |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
rust-langdev
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Is this a good way to free up some memory?
If you're doing lang dev, maybe check out https://github.com/Kixiron/rust-langdev. I haven't done much since college, not in rust, but I've heard good things
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loxcraft: a compiler, language server, and online playground for the Lox programming language
rust-langdev has a lot of libraries for building compilers in Rust. Perhaps you could use these to make your implementation easier, and revisit it later if you want to build things from scratch. I'd suggest logos for lexing, LALRPOP / chumsky for parsing, and rust-gc for garbage collection.
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Should I revisit my choice to use nom?
https://github.com/Kixiron/rust-langdev is a pretty nice list of libraries for Rust lang dev including parsers.
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Tools for creating a programming language in rust
Someone showed me this repo with a bunch of lang dev libraries a while ago. I haven't done anything with it personally, but it may be of interest to you https://github.com/Kixiron/rust-langdev
- Rust libraries to build a compiler for my language?
- Good textbook with implementations of OO type system?
- How to write a compiler or interpreter in rust
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Make A Langage
https://github.com/Kixiron/rust-langdev for additional resources and libraries
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Can i use rust to write my compiler??
Absolutely. For a non-exhaustive list of other languages written in Rust, there is https://github.com/alilleybrinker/langs-in-rust. If you are looking for libraries to help you along the way, check out https://github.com/Kixiron/rust-langdev.
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Does anyone know if scala parser combinators library works for scala 3?
not sure if i’m really convinced of this, rustc being written in rust means there are a lot of great language dev abstractions that have made their way to the ecosystem. particularly for a language frontend, i would argue rust provides a fantastic experience: there are dedicated lexer generators, parsers of all sorts, including some with great error messages out of the box, several variations on rustc-style diagnostic reporting, among others. in fact, as far as frontend implementation, i would argue rust is significantly easier to get off of the ground with than haskell, which has a steep learning curve for some of the really powerful libraries most useful for working with large AST datatypes, and some frankly crusty tools as the “best in class” for lexer and parser generation. granted, parser combinators in haskell are a bit more convenient than in rust, but i think the language dev story as a whole for rust is really solid.
inko
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Inko Programming Language
I have mixed feelings on Rust's syntax, especially around generics, lifetimes, and the `modifier -> keyword` syntax (i.e. `async fn` or `pub fn`). For Inko, I wanted something that's easy to parse by hand, and no context specific parsing (e.g. `QUOTE -> something` being the start of a lifetime in one place, but a char literal in another place).
Another motivator for that is that years ago I worked on Rubinius for a while (an implementation of Ruby), and helped out with a parser for Ruby (https://github.com/whitequark/parser). The Ruby developers really liked changing their already impossible syntax in even more impossible ways on a regular basis, making it a real challenge to provide syntax related tools that support multiple Ruby versions. I wanted to avoid making the same mistake with Inko, hence I'm actively trying to keep the syntax as simple as is reasonable.
As for the specific examples:
- `fn async` means your parser only needs to look for `A | B | fn` in a certain scope, instead of `A | B | fn | async fn`. This cuts down the amount of repetition in the parser. An example is found at https://github.com/inko-lang/inko/blob/8f5ad1e56756fe00325a3..., which parses the body of a class definition.
- Skipping parentheses is directly lifted from Ruby, because I really like it. Older versions took this further by also letting you write `function arg1 arg2`, but I got rid of that to make parsing easier. It's especially nice so you can do things like `if foo.bar.baz? { ... }` instead of `if foo().bar().baz?()`, though I suspect opinions will differ on this :)
- Until recently we did in fact use `::` as a namespace separator, but I changed that to `.` to keep things consistent with the call syntax, and because it removes the need for remembering "Oh for namespaces I need to use ::, but for calls .".
- `[T]` for generics is because most editors automatically insert a closing `]` if you type `[`, but not when you type `<`. If they do, then trying to write `10<20` is annoying because you'd end up with `10<>20`. I also just like the way it looks more. The usual ambiguity issues surrounding `<>` (e.g. what leads to `foo::()` in Rust) doesn't apply to Inko, because we don't allow generics in expressions (i.e. `Array[Int].with_capacity(42)` isn't valid syntax) in the first place.
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Type inference of local variable based on later operations
Inko's type checker, start at TypeChecker.check and work your way down the call stack. TypeChecker.check_type_ref is where most of the work is done.
Inko supports this in its type checker. The implementation is both surprisingly simple and tricky, and works roughly as follows:
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The Rust I Wanted Had No Future
Perhaps it's worth looking into Inko? I apologise if I'm shilling my own project a bit too hard here, but reading through the comments it does seem people would be interested in what it's trying to do :)
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The Rust I wanted had no future
Perhaps you'd be interested in Inko (https://inko-lang.org/). It's obviously not there yet in terms of tooling and what not, but it might scratch an itch for those looking for something a bit like Rust, but easier to use.
Disclaimer: I'm the author of said language :)
What are some alternatives?
inkwell - It's a New Kind of Wrapper for Exposing LLVM (Safely)
codespan - Beautiful diagnostic reporting for text-based programming languages.
langs-in-rust - A list of programming languages implemented in Rust, for inspiration.
scala3-example-project - An example sbt project that compiles using Dotty
pratt - Pratt parser written in Rust
plzoo - Programming Languages Zoo
cranelift-jit-demo - JIT compiler and runtime for a toy language, using Cranelift
cats-parse - A parsing library for the cats ecosystem
marwood - An embeddable Scheme R7 Compiler & Runtime written in Rust
nom - Rust parser combinator framework
starlark-rust - A Rust implementation of the Starlark language
llrl - An experimental Lisp-like programming language