feat: C# language (ast-grep#41)

Author: pelikhan

packages/csharp/README.md

@@ -0,0 +1,24 @@
+# ast-grep napi language for CSharp
+
+## Installation
+
+In a pnpm project, run:
+
+```bash
+pnpm install @ast-grep/lang-csharp
+pnpm install @ast-grep/napi
+# install the tree-sitter-cli if no prebuild is available
+pnpm install @tree-sitter/cli --save-dev
+```
+
+## Usage
+
+```js
+import CSharp from '@ast-grep/lang-csharp'
+import { registerDynamicLanguage, parse } from '@ast-grep/napi'
+
+registerDynamicLanguage({ CSharp })
+
+const sg = parse('CSharp', `your code`)
+sg.root().kind()
+```

packages/csharp/index.d.ts

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+type LanguageRegistration = {
+  libraryPath: string
+  extensions: string[]
+  languageSymbol?: string
+  metaVarChar?: string
+  expandoChar?: string
+}
+
+declare const registratoin: LanguageRegistration
+export default registratoin

packages/csharp/index.js

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+const path = require('node:path')
+const libPath = path.join(__dirname, 'parser.so')
+
+module.exports = {
+  libraryPath: libPath,
+  extensions: ["cs"],
+  languageSymbol: 'tree_sitter_CSharp',
+  expandoChar: 'µ',
+}

packages/csharp/nursery.js

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+const { setup } = require('@ast-grep/nursery')
+const languageRegistration = require('./index')
+
+setup({
+  dirname: __dirname,
+  name: 'CSharp',
+  treeSitterPackage: 'tree-sitter-c-sharp',
+  languageRegistration,
+  testRunner: (parse) => {
+    const sg = parse('var a = 123;')
+    const root = sg.root()
+    const node = root.find('var $A = 123')
+    assert.equal(node.kind(), 'variable_declaration')
+  }
+})

packages/csharp/package.json

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+{
+  "name": "@ast-grep/lang-csharp",
+  "version": "0.0.1",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "build": "tree-sitter build -o parser.so",
+    "source": "node nursery.js source",
+    "prepublishOnly": "node nursery.js source",
+    "postinstall": "node postinstall.js",
+    "test": "node nursery.js test"
+  },
+  "files": [
+    "index.js",
+    "index.d.ts",
+    "type.d.ts",
+    "postinstall.js",
+    "src",
+    "prebuilds"
+  ],
+  "keywords": ["ast-grep"],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@ast-grep/setup-lang": "0.0.3"
+  },
+  "peerDependencies": {
+    "tree-sitter-cli": "0.24.6"
+  },
+  "peerDependenciesMeta": {
+    "tree-sitter-cli": {
+      "optional": true
+    }
+  },
+  "devDependencies": {
+    "@ast-grep/nursery": "0.0.2",
+    "tree-sitter-cli": "0.24.6"
+  },
+  "publishConfig": {
+    "access": "public",
+    "registry": "https://registry.npmjs.org/"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "@ast-grep/lang-csharp",
+      "tree-sitter-cli"
+    ]
+  }
+}

packages/csharp/postinstall.js

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+const { postinstall } = require('@ast-grep/setup-lang')
+postinstall({
+  dirname: __dirname,
+})