lark

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Syntax diagram generation

10

**Suggestion** Provide a clear and concise description of what the problem is, what you want to happen. How difficult would it be to add a generator of syntax diagrams for...

napulen

Using lark for a language server

22

Hey, I'm wondering how conducive lark would be for creating a language server implementation for a given DSL. For some background: - I have a custom DSL I'm using to...

rmcgregor1990

question: is incremental parsing possible?

17

I have the use case where I need to parse a text line by line. At the first line, the parser can start at its `start` position. At the end...

wbsoft

Lark grammar?

8

Are there any plans to create a Lark grammar for Lark? The only file currently in lark/grammars is common.lark, which defines a few terminals. The authoritative definition of Lark would...

davaya

Make sphinx gallery execute examples

4

There are some issues with relative imports and other issues. Once fixed they can be made to execute and that could be super cool! See https://github.com/lark-parser/lark/pull/666#issuecomment-676159386_

chsasank

testing/debugging grammar interactively ?

12

I am thinking something along the lines of https://omrelli.ug/nearley-playground/ that provides an interactive feedback to the user creating a grammar, via examples or other way. The nicest tool I know...

asmodehn

Nearley macros not supported

10

I had a go at [converting my nearley grammar](https://github.com/monostable/electro-grammar/tree/python) but I encountered the error: ``` File "/home/kaspar/.local/lib/python3.5/site-packages/lark/tools/nearley.py", line 116, in _nearley_to_lark assert False, directive AssertionError: include ``` So I am...

kasbah

Locally disable %ignore

15

It is common that languages have some sections, such as strings or floats, which have completely different lexical syntax (w.r.t. whitespace and such) than everything else. The current approach appears...

Kyuuhachi

Nondeterministic Earley parse

4

**Describe the bug** On Lark 0.8.5, Python 3.7.7, I'm observing a parse affected by `PYTHONHASHSEED`. **A clear and concise description of what the bug is, and what you expected to...

adkabo

Generated standalone parsers are not always identical for the same input

3

Given a fixed grammar file to generate a standalone parser using `lark.tools.standalone`, the resulting generated code is not always identical despite setting PYTHONHASHSEED. Note that the syntax tree given by...

kitchoi