gram_grep
frozen
gram_grep | frozen | |
---|---|---|
4 | 10 | |
11 | 1,205 | |
- | - | |
7.1 | 6.1 | |
13 days ago | about 1 month ago | |
C++ | C++ | |
Boost Software License 1.0 | Apache License 2.0 |
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.
gram_grep
-
AST-grep(sg) is a CLI tool for code structural search, lint, and rewriting
There is also gram_grep[0]"Search text using a grammar, lexer, or straight regex. Chain searches for greater refinement."
See also parsertl-playground[1] for online edit/test grammars.
[0]https://github.com/BenHanson/gram_grep
-
Show HN: Yacc/Lex editor/tester online
I'm building an online yacc/lex (LALR(1)) grammar editor/tester to help develop/debug/document grammars, the main repository is here https://github.com/mingodad/parsertl-playground and the online playground with several non trivial examples is here https://mingodad.github.io/parsertl-playground/playground/ .
Select a grammar/example from "Examples" select box and then click "Parse" to see a parser tree for the source in "Input source" editor.
It's based on https://github.com/BenHanson/gram_grep and https://github.com/BenHanson/lexertl14 .
Any feedback is welcome !
The grammars available so far (with varying state of correctness):
- Ada parser
- Question about lexer and parser generators in Rust
-
MSVC Backend Updates in Visual Studio 2019 version 16.10 Preview 2 | C++ Team Blog
Thanks for the tip, but I fear storing the result on the stack will be too much to ask for for big lexers (see https://github.com/BenHanson/gram_grep/blob/c64f8829661f11b38a55b42b37f5051c5eabfaa6/main.cpp#L2301 for example).
frozen
-
Making a "constant mapping"
I found this extension that implements "frozen" versions of some C++ containers, but I was wondering if there is a good solution available in the standard library.
-
Static map - is it possible?
A library exists that can produce constexpr hash table based containers.
-
What C++ library do you wish existed but hasn’t been created yet?
I use the Frozen library for that. Since the conversions should be known at compile time you can make constexpr hash tables for lookups.
-
Command-line util for class implementation (My first try at a professional c++ application)
The constexpr dependency of note here is frozen.
-
Ambition is cute.
In C++, a drop-in replacement for your DSA can provide significant improvements over the standard library. Particularly the standard unordered_map class can be improved by 50% to 100% (e.g. https://github.com/greg7mdp/parallel-hashmap, or for static maps https://github.com/serge-sans-paille/frozen). Of course, recognize that creating a DS/A from scratch is an entire project, and you shouldn't roll your own for an independent codebase.
-
[Hobby] Bomberman fan 2D Animator needed
Technologies (for curious folks): C++17, SFML, Entt, Frozen, Protobuf, spdlog, GoogleTest, GoogleBenchmark, CMake and Dear ImGui for debug purpose.
-
May 2021 monthly "What are you working on?" thread
In the language, I added anonymous array literals. I did some cleanup in the compiler and updated to LLVM 12 from 10 (which was pretty trivial, surprisingly). I also added frozen, a C++ perfect-hashing library, as a dependency to speed up the lookup of keywords in my lexer. The library exploits C++’s constexpr features to generate a perfect hash at compile-time without any separate build step, which is great, and it also provides a drop-in replacement for std::unordered_map that uses the hash.
-
MSVC Backend Updates in Visual Studio 2019 version 16.10 Preview 2 | C++ Team Blog
This is where I plug Frozen :-] https://github.com/serge-sans-paille/frozen
-
What (relatively) easily to implement features would you like to see in c++23.
I’ve no idea how hard it is to implement, but return type polymorphism would be nice. Especially returning different things based on the constexpress of the result. And then add Frozen eqivalents of associative containers to the STL, so that, for example constexpr auto set = std::make_set(...) would be frozen::set, and auto set = std::make_set(...) would be std::set.
-
Compile-time INI config parsing and accessing with C++20
In which case, I believe the answer your question would be yes: the frozen map.
What are some alternatives?
tracy - Frame profiler
parallel-hashmap - A family of header-only, very fast and memory-friendly hashmap and btree containers.
gramatika - A minimal toolkit for writing parsers with Rust
STL - MSVC's implementation of the C++ Standard Library.
parsertl14 - C++14 version of parsertl
bluebird - A work-in-progess programming language modeled after Ada and C++
chumsky - Write expressive, high-performance parsers with ease.
mpv - 🎥 Command line video player
semgrep - Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.
c3c - Compiler for the C3 language
read - A small header-only library to make input in C++ sensible