Function finalizeGoSource

codegen/file.go:129–162

finalizeGoSource processes Go source entirely in memory without file I/O

(path string, content []byte)

// finalizeGoSource processes Go source entirely in memory without file I/O
func finalizeGoSource(path string, content []byte) ([]byte, error) {
	// Parse the content
	fset := token.NewFileSet()
	file, err := parser.ParseFile(fset, path, content, parser.ParseComments)
	if err != nil {
		var buf bytes.Buffer
		scanner.PrintError(&buf, err)
		return nil, fmt.Errorf("%s\n========\nContent:\n%s", buf.String(), content)
	}

	// Clean unused imports using optimized single-pass detection
	impMap := buildImportMap(file)
	detectUsedImports(file, impMap)
	removeUnusedImports(fset, file, impMap)
	ast.SortImports(fset, file)

	// Format the AST back to bytes
	var formatted bytes.Buffer
	if err := format.Node(&formatted, fset, file); err != nil {
		return nil, err
	}

	// Apply goimports formatting
	opt := imports.Options{
		Comments:   true,
		FormatOnly: true,
	}
	result, err := imports.Process(path, formatted.Bytes(), &opt)
	if err != nil {
		return nil, err
	}

	return result, nil
}