tree-sitter-c-sharp
C# grammar for tree-sitter
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, carries a permissive MIT license, and fills a specific need for incremental C# parsing in the tree-sitter ecosystem. Install it if you're building tools that parse or analyze C# code and want fast, dependency-light syntax tree generation. The medium install friction is offset by broad platform support and zero runtime dependencies.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.9 or later; tree-sitter core library must be installed separately.
- Medium install friction due to precompiled wheels across multiple platforms (macOS, Linux, Windows, ARM64), but no runtime dependencies and active maintenance with a recent release.
License · maintenance · safety
MIT (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.
last release 2026-04-14 (122 days) · last repo commit 2026-07-20 · 317 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 10,740,479 downloads/mo, #1,439 on PyPI
Alternatives
Verify before relying
pip install tree-sitter-c-sharp
from tree_sitter_c_sharp import language- Whether the parser handles all C# 13.0 features or only those explicitly tested in the grammar
- Performance characteristics for large codebases or real-time parsing scenarios
- Compatibility with specific tree-sitter versions or API stability guarantees
- How to instantiate and use the language binding with tree-sitter's Parser interface
What it is and what it does
tree-sitter-c-sharp is a language grammar binding that plugs C# parsing into the tree-sitter incremental parsing framework. It translates the Roslyn C# grammar into tree-sitter's format, with adaptations to handle preprocessor directives, syntax fragments, and edge cases where the two parsing technologies differ. The result is a fast, incremental parser that builds abstract syntax trees for C# code without external dependencies.
You use it by installing the package and importing the language binding. It's designed for tools that need to analyze, transform, or highlight C# syntax—editors, linters, code generators, or language servers—where incremental re-parsing on edits is valuable. The package supports C# 1 through 13.0, with a documented exception for `async`, `var`, and `await` as identifiers in certain contexts.
Use it for
- Build a C# code linter or style checker that re-parses only changed sections on each edit.
- Implement syntax highlighting or code folding in an editor or IDE plugin using incremental parsing.
- Generate C# AST data for static analysis, refactoring tools, or code generation pipelines.
- Create a language server protocol implementation for C# with incremental parsing support.
- Parse C# code fragments (snippets, REPL input) without requiring a full compilation context.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, carries a permissive MIT license, and fills a specific need for incremental C# parsing in the tree-sitter ecosystem. Install it if you're building tools that parse or analyze C# code and want fast, dependency-light syntax tree generation. The medium install friction is offset by broad platform support and zero runtime dependencies.
Install
tree-sitter-c-sharp on PyPI
Before you install
Medium install friction due to precompiled wheels across multiple platforms (macOS, Linux, Windows, ARM64), but no runtime dependencies and active maintenance with a recent release.
Requires Python 3.9 or later; tree-sitter core library must be installed separately.
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.
Quickstart
pip install tree-sitter-c-sharp
from tree_sitter_c_sharp import languageVerify before relying
- Whether the parser handles all C# 13.0 features or only those explicitly tested in the grammar
- Performance characteristics for large codebases or real-time parsing scenarios
- Compatibility with specific tree-sitter versions or API stability guarantees
- How to instantiate and use the language binding with tree-sitter's Parser interface
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 122 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 10,740,479 / month, #1,439 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Intended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseTopic :: Software Development :: CompilersTopic :: Text Processing :: LinguisticTyping :: Typed |
Evidence: tree_sitter_c_sharp-0.23.5-cp310-abi3-macosx_10_9_x86_64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-macosx_11_0_arm64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-manylinux1_x86_64.manylinux_2_28_x86_64.manylinux_2_5_x86_64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-manylinux2014_aarch64.manylinux_2_17_aarch64.manylinux_2_28_aarch64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-musllinux_1_2_aarch64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-musllinux_1_2_x86_64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-win_amd64.whl; tree_sitter_c_sharp-0.23.5-cp310-abi3-win_arm64.whl
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See also tree-sitter-java · tree-sitter-c · tree-sitter-python · tree-sitter-css · tree-sitter-language-pack · tree-sitter-go · tree-sitter-cpp · tree-sitter-php · tree-sitter-kotlin · tree-sitter-json