pico-args
lalrpop
pico-args | lalrpop | |
---|---|---|
11 | 25 | |
547 | 2,883 | |
- | 1.2% | |
3.0 | 7.5 | |
7 months ago | 16 days ago | |
Rust | Rust | |
MIT License | Apache-2.0 or MIT |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
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.
pico-args
- Improving build times for derive macros by 3x or more
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Need a new args parser
That's because the maintainer does not consider it an issue but an implementation detail: https://github.com/RazrFalcon/pico-args/issues/15
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An alternative to clap but with a stable API?
Maybe pico-args then?
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Immediately off the top of your head what is the best Rust CLI library.
If I forget to get around to it, would you mind poking RazrFalcon/pico-args about adding it to the comparison chart? I really like using that thing as something I can link people to with just a quick explanation of that particular trade-off.
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Best CLI arg parser for use in Rust to port from Perl with Getopt::Long?
If fewer dependencies is better, you can't get much fewer than pico-args, which has zero dependencies.
- What is the current proper way to get command line args ?
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Creating an Argparse library [feedback would be appreciated]
You might also want to check out pico-args, Gumdrop, and lexopt to see if any of them meet your needs.
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Can we please stop downvoting people who dislike Rust?
For example, The Rust compiler isn't slow; we are. and pico-args: Alternatives.
- pico-args: An ultra simple CLI arguments parser with 0 dependencies
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New:`cargo-fuzzcheck` 0.5.0 and a series of decent, fast-to-compile crates to replace `syn`, `quote`, `serde-json`, and `toml-rs`
For example, I'd love to go from StructOpt to Gumdrop for parsing command-line arguments and cut my compile times and output size by an order of magnitude, but Gumdrop uses String internally, which means it'll panic if it encounters a Windows path with un-paired surrogates or a mojibake'd posix path... some of which I actually have.
lalrpop
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nom > regex
And some related parser tools: - https://github.com/kevinmehall/rust-peg - https://github.com/pest-parser/pest - https://github.com/lalrpop/lalrpop
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What is the state of the art for creating domain-specific languages (DSLs) with Rust?
lalrpop
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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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Question about lexer and parser generators in Rust
Hi! For one of my projects I am currently using lalrpop (https://github.com/lalrpop/lalrpop/tree/master/doc/calculator/src), which is far from complete, but has the basic syntax I was looking for. I took some examples and worked around some lexer stuff but I’m currently happy with it. If you use it and have Intellij stuff installed, you can also use a plug-in for highlighting and SOMETIMES error checking. Otherwise, even VSCode had a great plug-in for highlighting!
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Contrext-free language parsing with procedural macros
How would you compare and contrast this with, say, lalrpop?
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Tools for creating a programming language in rust
lalrpop is great. It's a completely different approach from nom, but for parsing a programming language, I would at least consider it. RustPython uses it.
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Best languages to design a new language in?
I presume LALRPOP handles left recursion just fine.
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Show HN: IQ” – jq for images (using rust, LALRPOP)
I wanted to share an experimental side project I have been working on for some time. I constantly use commands like `jq` and `yq` for processing structured data in my day job and I was curious if a similar idea could be applied to images.
Another goal of mine was to get some exposure to with rust. I discovered the LALRPOP parser generator which really helped moved the project along (https://github.com/lalrpop/lalrpop)
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Writing a new programming language. Part II: Variables and expressions
The key point here is that we are going to depend on the lalrpop library to generate the parser based on the formal grammar we define. Note that we have it as part of the [build-dependencies] section and we only depend on a tiny utility crate called lalrpop-util at runtime. The reason for that is the main lalrpop "magic" would happen during the crate compilation (in the build.rs file) when lalrpop would generate the deterministic pushdown automaton based on our grammar. The code generation logic is not required to be part of our interpreter, we only need a few utility methods from the lalrpop-util for the automaton to operate. You might have noticed that we also enable the lexer feature of lalrpop, because we are going to use lexer provided by lalrpop as well (please refer to the Part I if you do not know what the lexer is).
What are some alternatives?
lexopt - Minimalist pedantic command line parser
pest - The Elegant Parser
xflags
nom - Rust parser combinator framework
command-line-rust - Code for Command-Line Rust (O'Reilly, 2022, ISBN 9781098109417) https://learning.oreilly.com/library/view/command-line-rust/9781098109424/
rust-peg - Parsing Expression Grammar (PEG) parser generator for Rust
thiserror - derive(Error) for struct and enum error types
combine - A parser combinator library for Rust
cli-guidelines - A guide to help you write better command-line programs, taking traditional UNIX principles and updating them for the modern day.
PEGTL - Parsing Expression Grammar Template Library
argh - Rust derive-based argument parsing optimized for code size
chomp - A fast monadic-style parser combinator designed to work on stable Rust.