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enum-map
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(Tip of my fingers) Library with a macro to create an enum from a range
I know I could write (and have written) this enum myself by hand. I don't want to use a newtype around u8 or something like that because I want the static guarantees of an enum — plus I'm using EnumMap to create statically-allocated maps with enum keys, so I'm hoping whatever this library was will play nicely with it.
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Is std::collections::HashMap optimized for enums?
What you might want is enum-map instead.
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What's your favourite under-rated Rust crate and why?
enum_map is great for dense maps where the keys are the variants of a discriminant-only enum.
logos
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Beating the fastest lexer generator in Rust
This is mighty impressive! I've been trying to get some motivation for the mythical rewrite of the proc macro in Logos, and this might just do it for me :D. I'll have a proper look later today and see if any of your findings have something that can be generalized. Also really surprised to see aarch64 doing better than x86_64 since the latter is what I've been optimizing for!
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Letlang — Roadblocks and how to overcome them - My programming language targeting Rust
Rust is a very nice langage for implementing compilers, and has a nice ecosystem for it (logos, rust-peg, lalrpop, astmaker -- this one is mine --, etc...).
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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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Logos 0.13 released
Thanks! For compile times you might find the CLI version that Andrew Hickman contributed useful, it's undocumented still mostly I fear but shouldn't be hard to use, see original PR: https://github.com/maciejhirsz/logos/pull/248
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Should I revisit my choice to use nom?
For my lexer generation purposes, I tend to use https://github.com/maciejhirsz/logos, as it not only generates an easy to use lazy lexer, but the result is also exceptionally fast!
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Position in rowan
Hi, I'm using rowan to create a parser and want to print more useful error messages with position in the text/file. I'm using logos (https://crates.io/crates/logos) to generate the lexer. Is there a way to get the starting and ending positions of a SyntaxToken? If not I thought of adding my own wrapper struct around the SyntaxTokens.
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Hey Rustaceans! Got a question? Ask here (6/2023)!
Is there a way for a lexer created with the logos crate (https://crates.io/crates/logos) to get the starting and ending positions for the tokens?
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Best resources for a rust interpreter?
I wouldn't recommend Logos at this point. This recent bug is quite nasty and seems easy to hit, and the maintainer is unresponsive. Last commit was half a year ago. At this point I consider Logos abandonware, though it would be great if its development continued, or if it were forked.
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Alternatives for "blazingly fast"
logos uses "ridiculously fast".
- Compiler in Rust
What are some alternatives?
strum - A small rust library for adding custom derives to enums
foundation.rust-lang.org - website for Rust Foundation
parse-size - Parse byte size into integer accurately.
schema-registry - Confluent Schema Registry for Kafka
structopt - Parse command line arguments by defining a struct.
book - The Rust Programming Language
serde-plain - A serde serializer that serializes a subset of types into plain strings
lexgen - A fully-featured lexer generator, implemented as a proc macro
actix-web-static-files - actix-web static files as resources support
sonyflake-rs - 🃏 A distributed unique ID generator inspired by Twitter's Snowflake.
NumToA - An efficient method of heaplessly converting numbers into their string representations, storing the representation within a reusable byte array.
hush - Hush is a unix shell based on the Lua programming language