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Switch to a different parsing library #29

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Clueliss opened this issue Mar 20, 2024 · 1 comment

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enhancement performance

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Clueliss commented Mar 20, 2024

Due to the lacking performance of ANTLR consider switching to a different parsing library.

Question: Is SPARQL context-free? (i.e. parsable with parser-combinators)
Answer: yes

Possible Libraries to look into (in no particular order):

https://github.com/taocpp/PEGTL (parser combinator)
https://github.com/foonathan/lexy (parser combinator)
https://tree-sitter.github.io/tree-sitter/ ("general enough to parse any programming language")
https://live.boost.org/doc/libs/1_68_0/libs/spirit/doc/x3/html/index.html (LL parser using EBNF)

Important features:

fast
correct
easy to maintain
expressive parsing errors
stream support (optional?)

Clueliss added the enhancement label

Contributor Author

Clueliss commented Mar 25, 2024

Also: ANTLR causes stack overflows on deeply nested path queries

bigerl added the performance label

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