lexertl14
gram_grep
lexertl14 | gram_grep | |
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3 | 4 | |
48 | 11 | |
- | - | |
5.8 | 7.1 | |
15 days ago | 9 days ago | |
C++ | C++ | |
- | Boost Software License 1.0 |
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lexertl14
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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
- Why no more Lex/Yakk/ANTLR/whatever?
gram_grep
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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
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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
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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).
What are some alternatives?
parsertl14 - C++14 version of parsertl
frozen - a header-only, constexpr alternative to gperf for C++14 users
bpr_cpp_lexer_mirror - Compile time generated lexical analyzers.
tracy - Frame profiler
gramatika - A minimal toolkit for writing parsers with Rust
PEGTL - Parsing Expression Grammar Template Library
lalrpop - LR(1) parser generator for Rust
chumsky - Write expressive, high-performance parsers with ease.
semgrep - Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.