Method visitNode

src/extraction/tree-sitter.ts:862–1203

* Visit a node and extract information

(node: SyntaxNode)

   * Visit a node and extract information
   */
  private visitNode(node: SyntaxNode): void {
    if (!this.extractor) return;

    const nodeType = node.type;
    let skipChildren = false;

    // Language-specific custom visitor hook
    if (this.extractor.visitNode) {
      const ctx = this.makeExtractorContext();
      const handled = this.extractor.visitNode(node, ctx);
      if (handled) {
        // The hook consumed this subtree, so the walkers below never descend
        // into it — scan it for function-as-value candidates (#756). Scala's
        // hook handles val/var definitions (`val table = Seq(targetCb)`), for
        // example. The scan is capture-only and halts at nested functions.
        this.scanFnRefSubtree(node, 0);
        return;
      }
    }

    // Pascal-specific AST handling
    if (this.language === 'pascal') {
      skipChildren = this.visitPascalNode(node);
      if (skipChildren) return;
    }

    // Function-as-value capture (#756) — independent of the dispatch ladder
    // below (the captured container types have no other handler there), so it
    // can never shadow or be shadowed by an extraction branch.
    this.maybeCaptureFnRefs(node, nodeType);

    // Check for function declarations
    // For Python/Ruby, function_definition inside a class should be treated as method
    if (this.extractor.functionTypes.includes(nodeType)) {
      if (this.isInsideClassLikeNode() && this.extractor.methodTypes.includes(nodeType)) {
        // Inside a class - treat as method
        this.extractMethod(node);
        skipChildren = true; // extractMethod visits children via visitFunctionBody
      } else {
        this.extractFunction(node);
        skipChildren = true; // extractFunction visits children via visitFunctionBody
      }
    }
    // Check for class declarations
    else if (this.extractor.classTypes.includes(nodeType)) {
      // Some languages reuse class_declaration for structs/enums (e.g. Swift)
      const classification = this.extractor.classifyClassNode?.(node) ?? 'class';
      if (classification === 'struct') {
        this.extractStruct(node);
      } else if (classification === 'enum') {
        this.extractEnum(node);
      } else if (classification === 'interface') {
        this.extractInterface(node);
      } else if (classification === 'trait') {
        this.extractClass(node, 'trait');
      } else {
        this.extractClass(node);
      }