f.Name = make(map[string]*Name)
	f.NamePos = make(map[*Name]token.Pos)

	// In ast1, find the import "C" line and get any extra C preamble.
	sawC := false
	for _, decl := range ast1.Decls {
		switch decl := decl.(type) {
		case *ast.GenDecl:
			for _, spec := range decl.Specs {
				s, ok := spec.(*ast.ImportSpec)
				if !ok || s.Path.Value != `"C"` {
					continue
				}
				sawC = true
				if s.Name != nil {

header comments. cmap[ast.Node(f)] = nil // Remove top-level consts used across the main and generated files. var newDecls []ast.Decl for _, decl := range f.Decls { switch d := decl.(type) { case *ast.GenDecl: if d.Tok == token.CONST { continue // Skip const declarations } if d.Tok == token.IMPORT { cmap[decl] = nil // Drop pre-import comments. } } newDecls = append(newDecls, decl) } f.Decls = newDecls // Replace identifiers. ast.Inspect(f, func(n ast.Node) bool { switch x := n.(type) { case *ast.Ident:...