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@@ -66,8 +66,8 @@ See more [examples in the wiki](https://github.com/erezsh/lark/wiki/Examples) |
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- Builds a parse-tree (AST) automagically, based on the structure of the grammar |
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- **Earley** parser |
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- Can parse *ALL* context-free grammars |
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- Full support for ambiguity in grammar |
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- Can parse all context-free grammars |
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- Full support for ambiguous grammars |
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- **LALR(1)** parser |
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- Competitive with PLY |
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- **EBNF** grammar |
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@@ -86,7 +86,7 @@ See the full list of [features in the wiki](https://github.com/erezsh/lark/wiki/ |
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#### Performance comparison |
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Lower is better! |
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Lark is the fastest and lightest (lower is better) |
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![Run-time Comparison](docs/comparison_runtime.png) |
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@@ -99,14 +99,14 @@ Check out the [JSON tutorial](/docs/json_tutorial.md#conclusion) for more detail |
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#### Feature comparison |
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| Library | Algorithm | Grammar | Builds tree? | Supports ambiguity? | Can handle every CFG? |
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| Library | Algorithm | Grammar | Builds tree? | Supports ambiguity? | Can handle every CFG? | Line/Column tracking | |
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|:--------|:----------|:----|:--------|:------------|:------------ |
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| **Lark** | Earley/LALR(1) | EBNF | Yes! | Yes! | Yes! | |
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| [PLY](http://www.dabeaz.com/ply/) | LALR(1) | BNF | No | No | No | |
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| [PyParsing](http://pyparsing.wikispaces.com/) | PEG | Combinators | No | No | No\* | |
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| [Parsley](https://pypi.python.org/pypi/Parsley) | PEG | EBNF | No | No | No\* | |
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| [funcparserlib](https://github.com/vlasovskikh/funcparserlib) | Recursive-Descent | Combinators | No | No | No | |
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| [Parsimonious](https://github.com/erikrose/parsimonious) | PEG | EBNF | Yes | No | No\* | |
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| **Lark** | Earley/LALR(1) | EBNF | Yes! | Yes! | Yes! | Yes! | |
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| [PLY](http://www.dabeaz.com/ply/) | LALR(1) | BNF | No | No | No | No | |
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| [PyParsing](http://pyparsing.wikispaces.com/) | PEG | Combinators | No | No | No\* | No | |
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| [Parsley](https://pypi.python.org/pypi/Parsley) | PEG | EBNF | No | No | No\* | No | |
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| [funcparserlib](https://github.com/vlasovskikh/funcparserlib) | Recursive-Descent | Combinators | No | No | No | No | |
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| [Parsimonious](https://github.com/erikrose/parsimonious) | PEG | EBNF | Yes | No | No\* | No | |
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(\* *According to Wikipedia, it remains unanswered whether PEGs can really parse all deterministic CFGs*) |
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