Method decodeMap

json/decode.go:647–725

(b []byte, p unsafe.Pointer, t, kt, vt reflect.Type, kz, vz reflect.Value, decodeKey, decodeValue decodeFunc)

}

func (d decoder) decodeMap(b []byte, p unsafe.Pointer, t, kt, vt reflect.Type, kz, vz reflect.Value, decodeKey, decodeValue decodeFunc) ([]byte, error) {
	if hasNullPrefix(b) {
		*(*unsafe.Pointer)(p) = nil
		return b[4:], nil
	}

	if len(b) < 2 || b[0] != '{' {
		return d.inputError(b, t)
	}
	i := 0
	m := reflect.NewAt(t, p).Elem()

	k := reflect.New(kt).Elem()
	v := reflect.New(vt).Elem()

	kptr := (*iface)(unsafe.Pointer(&k)).ptr
	vptr := (*iface)(unsafe.Pointer(&v)).ptr
	input := b

	if m.IsNil() {
		m = reflect.MakeMap(t)
	}

	var err error
	b = b[1:]
	for {
		k.Set(kz)
		v.Set(vz)
		b = skipSpaces(b)

		if len(b) != 0 && b[0] == '}' {
			*(*unsafe.Pointer)(p) = unsafe.Pointer(m.Pointer())
			return b[1:], nil
		}

		if i != 0 {
			if len(b) == 0 {
				return b, syntaxError(b, "unexpected end of JSON input after object field value")
			}
			if b[0] != ',' {
				return b, syntaxError(b, "expected ',' after object field value but found '%c'", b[0])
			}
			b = skipSpaces(b[1:])
		}

		if hasNullPrefix(b) {
			return b, syntaxError(b, "cannot decode object key string from 'null' value")
		}

		if b, err = decodeKey(d, b, kptr); err != nil {
			return objectKeyError(b, err)
		}
		b = skipSpaces(b)

		if len(b) == 0 {
			return b, syntaxError(b, "unexpected end of JSON input after object field key")
		}
		if b[0] != ':' {