cpp-peglib


cpp-peglib | AdventOfCode | |
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5 | 3 | |
933 | 2 | |
1.2% | - | |
6.2 | 10.0 | |
3 months ago | about 2 years ago | |
C++ | C# | |
MIT License | - |
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cpp-peglib
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Fixing Left and Mutual Recursions in Grammars
Debugging a complex PEG is a nightmarish task. I use various tools, but I couldn't find anything out there that will let you set a breakpoint in a file that's being parsed and let you explore the parsing state.
The most useful tools I found were adjacent to the cpp-peglib library: https://github.com/yhirose/cpp-peglib
This comes with a PEG playground: https://yhirose.github.io/cpp-peglib/
I really liked pegdebug: https://mqnc.github.io/pegdebug/
With sample output here: https://mqnc.github.io/pegdebug/example/output.html
pegdebug is nice for small sets of data, but it rapidly gets swamped by anything over about 50 lines.
If anyone has other suggestions for debugging PEGs, please reply and let me know,.
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-๐- 2022 Day 13 Solutions -๐-
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
AdventOfCode
What are some alternatives?
PEGTL - Parsing Expression Grammar Template Library
advent-of-code
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.
aoc2022
scope_guard - A modern C++ scope guard that is easy to use but hard to misuse.
advent-of-code
scnlib - scanf for modern C++
AoC-2022 - Advent of code 2022
filter_spirit - Advanced item filter generator for Path of Exile that uses it's own DSL and online item price APIs
aoc2022
flex - The Fast Lexical Analyzer - scanner generator for lexing in C and C++
advent-of-code

