cpp-peglib
PEGTL
| cpp-peglib | PEGTL | |
|---|---|---|
| 4 | 12 | |
| 927 | 1,967 | |
| - | 0.8% | |
| 6.2 | 8.0 | |
| about 2 months ago | 11 days ago | |
| C++ | C++ | |
| MIT License | gtkbook License |
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cpp-peglib
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-🎄- 2022 Day 13 Solutions -🎄-
I used yhirose's PEG (parsing expression grammar) libraryfor parsing.
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What are some cool modern libraries you enjoy using?
By the same author, https://github.com/yhirose/cpp-peglib is also very nice.
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A Good Tool for Resuming Parsers?
Most of the research into this sort of incremental and differential parsing unsurprisingly looks to be in the Haskell community, but I was hoping that someone here might know of some C++-friendly tools that might support generating parsers that support interruption and resuming. cpp-peglib looked really promising, but its parsers don't look like they can be engaged from any but the initial state.
- yhirose/cpp-peglib - A single file C++ header-only PEG (Parsing Expression Grammars) library
PEGTL
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Show HN: Matcheroni, a tiny C++20 header library for building lexers/parsers
Very cool, and I like the name!
I'd be interested in reading about how Matcheroni compares with PEGTL and Lexy.
https://github.com/taocpp/PEGTL
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Use PEGTL to remove my clunky homemade parser
I found a library I wanted to test: Pegtl
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What are some cool modern libraries you enjoy using?
I like PEGTL
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Are C/C++ developers allowed to import libraries to make coding easier or are they expected to build every functions and methods from scratch (without importing anything like String.h)?
Sure - libraries that are expected to be entirely self-contained. The one that comes to mind is PEGTL, a parser combinator library that is intended to be embedded inside a larger program. Making it import more dependencies would break this philosophy. Similarly, in the Rust world, there are a variety of "no-std" crates that should be able to be imported even if the standard library is not available on the target platform.
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TIL: Visual Studio has quantum state values 🤨
The program in the post was just an example meant to illustrate the problem. Originally, this (new) behavior of MSVC broke my code in the PEGTL, see [this commit](https://github.com/taocpp/PEGTL/commit/e3c8cb499dc3d1d76d23f2d5d79469dcb15550c5) that I needed to apply to fix it.
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We Built a C++ Rendering Engine for the Web
As a professional C++ programmer I feel a lot of the reasons C++ gets this response is because it's simply not "batteries included" like Go or Rust.
C++ is a very powerful, unopinionated language, that gives you a lot of freedom to attack your problem domain the way you best see fit.
If you're writing a networked application, don't use POSIX sockets, go and find a higher level library. If you're parsing complex text formats, don't iterate over buffers with char*'s, go pick up PEGTL[0]. If you're working on graphs, or need to properly index in-memory data, go pick up Boost[1][2]. If you need a GUI, go pick up Qt.
It's extremely common in C++, due to the lack of a universal package management solution, for people to try and "muddle through" and do shit themselves when it's far outside their core competency.
At one of my last employers, the core product was parsing JSON with std::regex, simply because they couldn't be bothered to integrate a JSON library.
[0] https://github.com/taocpp/PEGTL
[1] https://www.boost.org/doc/libs/1_76_0/libs/graph/
[2] https://www.boost.org/doc/libs/1_76_0/libs/multi_index/doc/i...
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Is there anything like sly for C++?
You are looking for Boost.Spirit (https://www.boost.org/doc/libs/1_76_0/libs/spirit/doc/x3/html/index.html) or PEGTL (https://github.com/taocpp/PEGTL)
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Why no more Lex/Yakk/ANTLR/whatever?
I personally prefer to use parsing combinator libraries in C++, where the "grammar" is just part of normal C++ and directly integrate. Examples are Boost.Spirit, pegtl, or (my own) lexy.
- Rust's Most Unrecognized Contributor
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Wondered if anyone is interested in a c++ parser combinators library?
While I'm not quite sure how this might transfer to your approach, with your Haskell-inspired style being quite different from our C++ templates, in the PEGTL our equivalent to your Char, which is called one, is variadic (true to the T in PEGTL a variadic template) and takes a list of possible matches.
What are some alternatives?
ctpg - Compile Time Parser Generator is a C++ single header library which takes a language description as a C++ code and turns it into a LR1 table parser with a deterministic finite automaton lexical analyzer, all in compile time.
lexy - C++ parsing DSL
scnlib - scanf for modern C++
C++ B-tree - Git mirror of the official (mercurial) repository of cpp-btree
filter_spirit - Advanced item filter generator for Path of Exile that uses it's own DSL and online item price APIs
spirit - Boost.org spirit module
scope_guard - A modern C++ scope guard that is easy to use but hard to misuse.
pybind11 - Seamless operability between C++11 and Python
flex - The Fast Lexical Analyzer - scanner generator for lexing in C and C++
Hopscotch map - C++ implementation of a fast hash map and hash set using hopscotch hashing
AdventOfCode
sparsepp - A fast, memory efficient hash map for C++