Method extract

src/extraction/tree-sitter.ts:454–577

* Parse and extract from the source code

()

   * Parse and extract from the source code
   */
  extract(): ExtractionResult {
    const startTime = Date.now();

    if (!isLanguageSupported(this.language)) {
      return {
        nodes: [],
        edges: [],
        unresolvedReferences: [],
        errors: [
          {
            message: `Unsupported language: ${this.language}`,
            filePath: this.filePath,
            severity: 'error',
            code: 'unsupported_language',
          },
        ],
        durationMs: Date.now() - startTime,
      };
    }

    const parser = getParser(this.language);
    if (!parser) {
      return {
        nodes: [],
        edges: [],
        unresolvedReferences: [],
        errors: [
          {
            message: `Failed to get parser for language: ${this.language}`,
            filePath: this.filePath,
            severity: 'error',
            code: 'parser_error',
          },
        ],
        durationMs: Date.now() - startTime,
      };
    }

    try {
      // Optional pre-parse source transform (offset-preserving) to work around
      // grammar gaps — e.g. C# blanks conditional-compilation directive lines
      // the grammar mis-parses inside enum bodies (#237). We reassign
      // this.source so downstream getNodeText reads the same bytes the parser
      // saw (identical outside the blanked directive lines). Skipped when the
      // kernel route point already applied it (sourceIsPreParsed).
      if (this.extractor?.preParse && !this.sourceIsPreParsed) {
        this.source = this.extractor.preParse(this.source, this.filePath);
      }
      this.tree = parser.parse(this.source) ?? null;
      if (!this.tree) {
        throw new Error('Parser returned null tree');
      }

      // Create file node representing the source file
      const fileNode: Node = {
        id: `file:${this.filePath}`,
        kind: 'file',
        name: path.basename(this.filePath),