go/src/cmd/internal/cov/mreader.go

type MReader …

func NewMreader(f *os.File) (*MReader, error) { … }

func (r *MReader) Read(p []byte) (int, error) { … }

func (r *MReader) ReadByte() (byte, error) { … }

func (r *MReader) Seek(offset int64, whence int) (int64, error) { … }