must

Documentation

Overview

Package must defines fail-fast smart error handlers.

Index

• type Handler
  • func (h *Handler) Check(err error)
  • func (h *Handler) Reset()
  • func (h *Handler) Result() error
• type ReadWriter
  • func (rw ReadWriter) Must(n int64, err error)
  • func (rw ReadWriter) ReadByteArray(r io.Reader, length int) (v []byte)
  • func (rw ReadWriter) ReadFloat32(r io.Reader) (v float32)
  • func (rw ReadWriter) ReadFloat64(r io.Reader) (v float64)
  • func (rw ReadWriter) ReadInt16(r io.Reader) (v int16)
  • func (rw ReadWriter) ReadInt32(r io.Reader) (v int32)
  • func (rw ReadWriter) ReadInt64(r io.Reader) (v int64)
  • func (rw ReadWriter) ReadInt8(r io.Reader) (v int8)
  • func (rw ReadWriter) Reset()
  • func (rw ReadWriter) Result() (n int64, err error)
  • func (rw ReadWriter) WriteByteArray(w io.Writer, value []byte)
  • func (rw ReadWriter) WriteFloat32(w io.Writer, value float32)
  • func (rw ReadWriter) WriteFloat64(w io.Writer, value float64)
  • func (rw ReadWriter) WriteInt16(w io.Writer, value int16)
  • func (rw ReadWriter) WriteInt32(w io.Writer, value int32)
  • func (rw ReadWriter) WriteInt64(w io.Writer, value int64)
  • func (rw ReadWriter) WriteInt8(w io.Writer, value int8)

Types

type Handler

type Handler struct {
	Err error
}

Handler errors out on the first error. It keeps a counter of bytes read.

func (*Handler) Check

func (h *Handler) Check(err error)

Check provides a hook for foreign functions returning errors.

func (*Handler) Reset

func (h *Handler) Reset()

Reset resets h.

func (*Handler) Result

func (h *Handler) Result() error

Result returns all bytes read by r and the first error found.

type ReadWriter

type ReadWriter struct {
	Handler
	N int64
}

ReadWriter keeps a counter of bytes read or write when dealing with 'io.Reader's and/or 'io.Writer's. Whenever an error is found all pending reads and writes are ignored.

func (ReadWriter) Must

func (rw ReadWriter) Must(n int64, err error)

Must provides a hook for foreign functions using 'io.Reader's or 'io.Writer's.

func (ReadWriter) ReadByteArray

func (rw ReadWriter) ReadByteArray(r io.Reader, length int) (v []byte)

func (ReadWriter) ReadFloat32

func (rw ReadWriter) ReadFloat32(r io.Reader) (v float32)

func (ReadWriter) ReadFloat64

func (rw ReadWriter) ReadFloat64(r io.Reader) (v float64)

func (ReadWriter) ReadInt16

func (rw ReadWriter) ReadInt16(r io.Reader) (v int16)

func (ReadWriter) ReadInt32

func (rw ReadWriter) ReadInt32(r io.Reader) (v int32)

func (ReadWriter) ReadInt64

func (rw ReadWriter) ReadInt64(r io.Reader) (v int64)

func (ReadWriter) ReadInt8

func (rw ReadWriter) ReadInt8(r io.Reader) (v int8)

func (ReadWriter) Reset

func (rw ReadWriter) Reset()

Reset resets rw.

func (ReadWriter) Result

func (rw ReadWriter) Result() (n int64, err error)

Result returns all bytes read and the first error found.

func (ReadWriter) WriteByteArray

func (rw ReadWriter) WriteByteArray(w io.Writer, value []byte)

func (ReadWriter) WriteFloat32

func (rw ReadWriter) WriteFloat32(w io.Writer, value float32)

func (ReadWriter) WriteFloat64

func (rw ReadWriter) WriteFloat64(w io.Writer, value float64)

func (ReadWriter) WriteInt16

func (rw ReadWriter) WriteInt16(w io.Writer, value int16)

func (ReadWriter) WriteInt32

func (rw ReadWriter) WriteInt32(w io.Writer, value int32)

func (ReadWriter) WriteInt64

func (rw ReadWriter) WriteInt64(w io.Writer, value int64)

func (ReadWriter) WriteInt8

func (rw ReadWriter) WriteInt8(w io.Writer, value int8)