Fast Parse
atto
Our great sponsors
| Fast Parse | atto | |
|---|---|---|
| 4 | - | |
| 1,072 | 357 | |
| 0.4% | - | |
| 4.6 | 0.0 | |
| 3 days ago | 9 days ago | |
| Scala | Scala | |
| MIT License | MIT License |
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Fast Parse
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How do I remove the forward reference error in my parser? (20 lines)
Perhaps use Li Haoyi's fastparse instead? https://github.com/com-lihaoyi/fastparse
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-🎄- 2021 Day 18 Solutions -🎄-
Mostly a mess of pattern matching. I really need to make some generic tree utilities. Haven't been able to find a decent parser combinator that works in Scala 3 (I usually use fastparse which depends heavily on Scala 2 macros, and scala-parser-combinators works in Scala 3, but I've had a lot of trouble getting it to not be too greedy), so I used the state monad from cats to parse at the bottom of the file, which I think turned out fairly nice.
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Parser generators vs. handwritten parsers: surveying major languages in 2021
Agreed! I would say that parser combinators are the sweet spot and the right choice in most cases.
Scala has them as well, e.g.: https://com-lihaoyi.github.io/fastparse/
And the good thing is, you don't have to learn a completely new language/syntax, you can use the host language's syntax and you have full IDE support as well.
atto
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Tracking mentions began in Dec 2020.
What are some alternatives?
Parboiled2 - A macro-based PEG parser generator for Scala 2.10+
Scala Parser Combinators - simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
Scopt - command line options parsing for Scala
Kaitai Struct - Kaitai Struct: declarative language to generate binary data parsers in C++ / C# / Go / Java / JavaScript / Lua / Nim / Perl / PHP / Python / Ruby
Scallop - a simple Scala CLI parsing library
decline - A composable command-line parser for Scala.
CLIST - Command Line Interface Scala Toolkit