parsertl-playground
ExprTK
| parsertl-playground | ExprTK | |
|---|---|---|
| 1 | 10 | |
| 11 | 581 | |
| - | - | |
| 9.5 | 0.0 | |
| 12 days ago | 5 days ago | |
| GAP | C++ | |
| Boost Software License 1.0 | - |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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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.
parsertl-playground
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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
ExprTK
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A Cpp library to evaluate mathematical literal expressions dynamically
I have found many libraries that can evaluate mathematical expressions, e.g. this one: https://www.partow.net/programming/exprtk/index.html
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Better library for evaluating math expressions stored on a String
I have used https://github.com/ArashPartow/exprtk for this task, since it is cpp we also used on IOS, however in android we changed to exp4j since it requires less space and did the same job.
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What do I do if a repo only has a make file and I'm on windows?
For the specific example repo you cited, the project website also offers some preconfigured example MSVC solutions. You may find this much easier to get set up and running if using a Makefile is not a hard requirement.
- What are some projects that taught you a lot?
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How to calculate an expression that is stored in a string in C++
This ExprTk library looks promising: https://www.partow.net/programming/exprtk/index.html
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A boolean logic simulator written in c++ & opengl 3.3. This is a toy project I'm currently developing to help me learn c++ & opengl. No libraries used, apart from stb_image and glad.
Now there are lots of libraries out there for expression processing as well. I would recommend exprtk: https://github.com/ArashPartow/exprtk
- library for solving equations from string?
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Regular language input math operations
If your actual goal isn't to implement it yourself and you need it for something else, take a look at this library: https://github.com/ArashPartow/exprtk
What are some alternatives?
JFlex - The fast scanner generator for Java™ with full Unicode support
TinyExpr - tiny recursive descent expression parser, compiler, and evaluation engine for math expressions
grmtools - Rust grammar tool libraries and binaries
muparser - muparser is a fast math parser library for C/C++ with (optional) OpenMP support.
winflexbison - Main winflexbision repository
CGal - The public CGAL repository, see the README below
cparse - cparse is an LR(1) and LALR(1) parser generator
Eigen
lexertl14 - C++14 version of lexertl
GLM - OpenGL Mathematics (GLM)
OpenBLAS - OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.
Boost.Multiprecision - Boost.Multiprecision