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<h1><a href="../../../index.html">All files</a> / <a href="index.html">src/services/parsing</a> treeSitterManager.js</h1>
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<span class="strong">0% </span>
<span class="quiet">Statements</span>
<span class='fraction'>0/83</span>
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<div class='fl pad1y space-right2'>
<span class="strong">0% </span>
<span class="quiet">Branches</span>
<span class='fraction'>0/24</span>
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<div class='fl pad1y space-right2'>
<span class="strong">0% </span>
<span class="quiet">Functions</span>
<span class='fraction'>0/8</span>
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<div class='fl pad1y space-right2'>
<span class="strong">0% </span>
<span class="quiet">Lines</span>
<span class='fraction'>0/83</span>
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<pre><table class="coverage">
<tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* TreeSitterManager - Loads and manages tree-sitter language grammars
*
* This module is responsible for loading the specified tree-sitter language
* grammars (JavaScript, Python, TypeScript) from their NPM package locations
* and providing access to initialized parsers for these languages.
*/
import pkg from "tree-sitter";
const { Parser } = <span class="cstat-no" title="statement not covered" >pkg;</span>
import path from "path";
import fs from "fs";
import logger from "../../utils/logger.js";
/**
* TreeSitterManager class
* Responsible for loading and managing tree-sitter language grammars
*/
export class TreeSitterManager {
/**
* Creates a new TreeSitterManager instance
*/
<span class="fstat-no" title="function not covered" > co</span>nstructor() {
<span class="cstat-no" title="statement not covered" > this.loadedGrammars = new Map();</span>
<span class="cstat-no" title="statement not covered" > this.initialized = false;</span>
}
/**
* Initialize tree-sitter language grammars
* @param {string[]} configuredLanguages - Array of language names to load (e.g., ['javascript', 'python', 'typescript'])
* @returns {Promise<boolean>} - True if all configured languages were loaded successfully
*/
<span class="fstat-no" title="function not covered" > as</span>ync initializeGrammars(configuredLanguages) {
<span class="cstat-no" title="statement not covered" > if (this.initialized) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn(</span>
"TreeSitterManager.initializeGrammars called, but grammars are already initialized"
);
<span class="cstat-no" title="statement not covered" > return true;</span>
}
<span class="cstat-no" title="statement not covered" > logger.info(</span>
`Initializing Tree-sitter grammars for: ${configuredLanguages.join(", ")}`
);
let allSuccessful = <span class="cstat-no" title="statement not covered" >true;</span>
// Process each configured language
<span class="cstat-no" title="statement not covered" > for (const language of configuredLanguages) {</span>
<span class="cstat-no" title="statement not covered" > try {</span>
// Handle special cases for languages with native bindings
<span class="cstat-no" title="statement not covered" > if (language === "typescript") {</span>
<span class="cstat-no" title="statement not covered" > await this.loadTypescriptGrammar();</span>
<span class="cstat-no" title="statement not covered" > continue;</span>
} else <span class="cstat-no" title="statement not covered" >if (language === "python") {</span>
<span class="cstat-no" title="statement not covered" > await this.loadPythonGrammar();</span>
<span class="cstat-no" title="statement not covered" > continue;</span>
} else <span class="cstat-no" title="statement not covered" >if (language === "javascript") {</span>
<span class="cstat-no" title="statement not covered" > await this.loadJavaScriptGrammar();</span>
<span class="cstat-no" title="statement not covered" > continue;</span>
}
// If we get here, we don't have a specific loader for this language
<span class="cstat-no" title="statement not covered" > logger.warn(`No specific loader available for language: ${language}`);</span>
<span class="cstat-no" title="statement not covered" > allSuccessful = false;</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(</span>
`Failed to load grammar for ${language}: ${error.message}`,
{
error: error.stack,
}
);
<span class="cstat-no" title="statement not covered" > allSuccessful = false;</span>
}
}
// Set initialized flag
<span class="cstat-no" title="statement not covered" > this.initialized = this.loadedGrammars.size > 0;</span>
<span class="cstat-no" title="statement not covered" > if (!this.initialized) {</span>
<span class="cstat-no" title="statement not covered" > logger.error("Failed to initialize any Tree-sitter grammars");</span>
<span class="cstat-no" title="statement not covered" > return false;</span>
}
<span class="cstat-no" title="statement not covered" > logger.info(</span>
`Successfully initialized ${this.loadedGrammars.size} Tree-sitter grammars`
);
<span class="cstat-no" title="statement not covered" > return allSuccessful;</span>
}
/**
* Load the JavaScript grammar using WASM
* @private
*/
<span class="fstat-no" title="function not covered" > as</span>ync loadJavaScriptGrammar() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info("Loading JavaScript grammar using require");</span>
// Use CommonJS require for loading the JavaScript grammar
const { createRequire } = <span class="cstat-no" title="statement not covered" >await import("module");</span>
const require = <span class="cstat-no" title="statement not covered" >createRequire(import.meta.url);</span>
// Load the JavaScript grammar
const jsLanguage = <span class="cstat-no" title="statement not covered" >require("tree-sitter-javascript");</span>
<span class="cstat-no" title="statement not covered" > if (!jsLanguage) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error("Failed to load JavaScript grammar module");</span>
}
<span class="cstat-no" title="statement not covered" > this.loadedGrammars.set("javascript", jsLanguage);</span>
<span class="cstat-no" title="statement not covered" > logger.info("Successfully loaded grammar for javascript");</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(`Failed to load JavaScript grammar: ${error.message}`, {</span>
error: error.stack,
});
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
/**
* Load the TypeScript grammar using Node.js bindings
* @private
*/
<span class="fstat-no" title="function not covered" > as</span>ync loadTypescriptGrammar() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info("Loading TypeScript grammars using Node.js bindings");</span>
// Use Node.js require for native modules
// Since we're in ESM context, we need to use createRequire
const { createRequire } = <span class="cstat-no" title="statement not covered" >await import("module");</span>
const require = <span class="cstat-no" title="statement not covered" >createRequire(import.meta.url);</span>
// Load TypeScript module
const tsModule = <span class="cstat-no" title="statement not covered" >require("tree-sitter-typescript");</span>
<span class="cstat-no" title="statement not covered" > if (!tsModule) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error("Failed to load TypeScript grammar module");</span>
}
// TypeScript grammar
<span class="cstat-no" title="statement not covered" > if (tsModule.typescript) {</span>
<span class="cstat-no" title="statement not covered" > this.loadedGrammars.set("typescript", tsModule.typescript);</span>
<span class="cstat-no" title="statement not covered" > logger.info("Successfully loaded grammar for typescript");</span>
} else {
<span class="cstat-no" title="statement not covered" > logger.error("TypeScript grammar not found in the module");</span>
}
// TSX grammar
<span class="cstat-no" title="statement not covered" > if (tsModule.tsx) {</span>
<span class="cstat-no" title="statement not covered" > this.loadedGrammars.set("tsx", tsModule.tsx);</span>
<span class="cstat-no" title="statement not covered" > logger.info("Successfully loaded grammar for tsx");</span>
} else {
<span class="cstat-no" title="statement not covered" > logger.error("TSX grammar not found in the module");</span>
}
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(`Failed to load TypeScript grammars: ${error.message}`, {</span>
error: error.stack,
});
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
/**
* Load the Python grammar using Node.js bindings
* @private
*/
<span class="fstat-no" title="function not covered" > as</span>ync loadPythonGrammar() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info("Loading Python grammar using Node.js bindings");</span>
// Use Node.js require for native modules
// Since we're in ESM context, we need to use createRequire
const { createRequire } = <span class="cstat-no" title="statement not covered" >await import("module");</span>
const require = <span class="cstat-no" title="statement not covered" >createRequire(import.meta.url);</span>
// Load Python module
const pythonModule = <span class="cstat-no" title="statement not covered" >require("tree-sitter-python");</span>
<span class="cstat-no" title="statement not covered" > if (!pythonModule) {</span>
<span class="cstat-no" title="statement not covered" > throw new Error("Failed to load Python grammar module");</span>
}
<span class="cstat-no" title="statement not covered" > this.loadedGrammars.set("python", pythonModule);</span>
<span class="cstat-no" title="statement not covered" > logger.info("Successfully loaded grammar for python");</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(`Failed to load Python grammar: ${error.message}`, {</span>
error: error.stack,
});
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
/**
* Get a parser for the specified language
* @param {string} languageName - Name of the language (e.g., 'javascript', 'python', 'typescript', 'tsx')
* @returns {Parser|null} - Initialized parser for the language or null if not available
*/
<span class="fstat-no" title="function not covered" > ge</span>tParserForLanguage(languageName) {
<span class="cstat-no" title="statement not covered" > if (!this.initialized) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn(</span>
"TreeSitterManager.getParserForLanguage called before initialization"
);
<span class="cstat-no" title="statement not covered" > return null;</span>
}
const grammar = <span class="cstat-no" title="statement not covered" >this.loadedGrammars.get(languageName);</span>
<span class="cstat-no" title="statement not covered" > if (!grammar) {</span>
<span class="cstat-no" title="statement not covered" > logger.warn(`No grammar loaded for language: ${languageName}`);</span>
<span class="cstat-no" title="statement not covered" > return null;</span>
}
<span class="cstat-no" title="statement not covered" > try {</span>
// Create a new parser instance
const parser = <span class="cstat-no" title="statement not covered" >new pkg();</span>
// Set the language for the parser
<span class="cstat-no" title="statement not covered" > parser.setLanguage(grammar);</span>
<span class="cstat-no" title="statement not covered" > return parser;</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(</span>
`Failed to create parser for ${languageName}: ${error.message}`,
{
error: error.stack,
}
);
<span class="cstat-no" title="statement not covered" > return null;</span>
}
}
/**
* Check if a language grammar is loaded
* @param {string} languageName - Name of the language
* @returns {boolean} - True if the language grammar is loaded
*/
<span class="fstat-no" title="function not covered" > ha</span>sLanguage(languageName) {
<span class="cstat-no" title="statement not covered" > return this.loadedGrammars.has(languageName);</span>
}
/**
* Get list of loaded language grammars
* @returns {string[]} - Array of language names that are loaded
*/
<span class="fstat-no" title="function not covered" > ge</span>tLoadedLanguages() {
<span class="cstat-no" title="statement not covered" > return Array.from(this.loadedGrammars.keys());</span>
}
}
export default TreeSitterManager;
</pre></td></tr></table></pre>
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