feat(language): Add support for Haskell via tree-sitter-haskell

[fwcd]

Fixes #1127

This adds support for Haskell by integrating tree-sitter-haskell. While it compiles, even rudimentary patterns such as return $A or $A $B do not work yet (probably an upstream issue?), therefore I will mark this PR as a draft for now.

[coderabbitai]

Walkthrough

The recent updates to the language crates introduce Haskell language support using tree-sitter-haskell. This includes setting up the necessary configurations, parsers, and testing functionalities for Haskell code, enhancing the ast-grep tool's capabilities to accommodate Haskell-specific syntax and patterns.

Changes

File Path	Change Summary
crates/language/Cargo.toml	Added support for tree-sitter-haskell version 0.21.0.
crates/language/src/haskell.rs, lib.rs	Introduced test functions for Haskell code pattern matching and replacing. Integrated Haskell support into the main library.
crates/language/src/parsers.rs	Added language_haskell() function to handle Haskell parsing.

Assessment against linked issues

Objective	Addressed	Explanation
Add Haskell support (#1127)	✅

🐇🎉
A hop, a skip, in the code we dip,
Haskell's in, let the games begin!
Patterns match, errors we catch,
In Haskell's land, ast-grep stands grand!
🌟📜🔍

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[HerringtonDarkholme]

Hi @fwcd, thanks for your interest in ast-grep.

You can look at custom language support https://ast-grep.github.io/advanced/custom-language.html for supporting haskell.

It is probable you need to configure the expandoChar option.

[fwcd]

Neat, didn't know about that and now it seems to work, thanks! I have added some tests too.

[coderabbitai]

Actionable comments posted: 0

Review Details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 5cb9dbd and c1b9fb7.

Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock, !**/*.lock

Files selected for processing (4)

• crates/language/Cargo.toml (3 hunks)
• crates/language/src/haskell.rs (1 hunks)
• crates/language/src/lib.rs (7 hunks)
• crates/language/src/parsers.rs (2 hunks)

Files skipped from review due to trivial changes (1)

• crates/language/Cargo.toml

Additional comments not posted (12)

crates/language/src/haskell.rs (5)

6-9: LGTM! The function correctly delegates to test_match_lang with Haskell as the language parameter.

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11-14: LGTM! The function correctly delegates to test_non_match_lang with Haskell as the language parameter.

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16-26: LGTM! The function tests various Haskell syntax elements. Consider adding more comprehensive tests if needed to cover more complex Haskell syntax.

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28-31: LGTM! The function correctly delegates to test_replace_lang with Haskell as the language parameter.

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33-68: LGTM! The function tests replacement in Haskell code. Consider adding more comprehensive tests if needed to cover more complex Haskell syntax.

crates/language/src/parsers.rs (1)

35-37: LGTM! The function correctly returns the Tree-sitter language configuration for Haskell.

crates/language/src/lib.rs (6)

16-16: LGTM! The Haskell module has been correctly added.

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160-160: LGTM! Haskell has been correctly added to the SupportLang enum.

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181-181: LGTM! Haskell has been correctly added to the all_langs function.

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234-234: LGTM! Haskell aliases have been correctly added.

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279-279: LGTM! Haskell has been correctly added to the execute_lang_method macro.

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335-335: LGTM! Haskell file extensions have been correctly added.

[coderabbitai]

Actionable comments posted: 0

Review Details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between c1b9fb7 and 70fb1cd.

Files selected for processing (1)

• crates/language/src/lib.rs (7 hunks)

Files skipped from review as they are similar to previous changes (1)

• crates/language/src/lib.rs

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.50%. Comparing base (169d361) to head (70fb1cd).
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1128      +/-   ##
==========================================
+ Coverage   73.36%   73.50%   +0.13%     
==========================================
  Files          76       76              
  Lines        5219     5219              
==========================================
+ Hits         3829     3836       +7     
+ Misses       1390     1383       -7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[HerringtonDarkholme]

thanks