gotools/internal/imports/imports.go

type Options …

// Process implements golang.org/x/tools/imports.Process with explicit context in opt.Env.
func Process(filename string, src []byte, opt *Options) (formatted []byte, err error) { … }

// FixImports returns a list of fixes to the imports that, when applied,
// will leave the imports in the same state as Process. src and opt must
// be specified.
//
// Note that filename's directory influences which imports can be chosen,
// so it is important that filename be accurate.
func FixImports(ctx context.Context, filename string, src []byte, opt *Options) (fixes []*ImportFix, err error) { … }

// ApplyFixes applies all of the fixes to the file and formats it. extraMode
// is added in when parsing the file. src and opts must be specified, but no
// env is needed.
func ApplyFixes(fixes []*ImportFix, filename string, src []byte, opt *Options, extraMode parser.Mode) (formatted []byte, err error) { … }

// formatFile formats the file syntax tree.
// It may mutate the token.FileSet and the ast.File.
//
// If an adjust function is provided, it is called after formatting
// with the original source (formatFile's src parameter) and the
// formatted file, and returns the postpocessed result.
func formatFile(fset *token.FileSet, file *ast.File, src []byte, adjust func(orig []byte, src []byte) []byte, opt *Options) ([]byte, error) { … }

// parse parses src, which was read from filename,
// as a Go source file or statement list.
func parse(fset *token.FileSet, filename string, src []byte, opt *Options) (*ast.File, func(orig, src []byte) []byte, error) { … }

// containsMainFunc checks if a file contains a function declaration with the
// function signature 'func main()'
func containsMainFunc(file *ast.File) bool { … }

func cutSpace(b []byte) (before, middle, after []byte) { … }

// matchSpace reformats src to use the same space context as orig.
//  1. If orig begins with blank lines, matchSpace inserts them at the beginning of src.
//  2. matchSpace copies the indentation of the first non-blank line in orig
//     to every non-blank line in src.
//  3. matchSpace copies the trailing space from orig and uses it in place
//     of src's trailing space.
func matchSpace(orig []byte, src []byte) []byte { … }

var impLine …

func addImportSpaces(r io.Reader, breaks []string) ([]byte, error) { … }