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value.go
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value.go
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package kv
// Value is a tiny wrapper over raw []byte slice.
type Value struct {
value []byte
}
var EmptyValue = Value{value: nil}
// NewValue creates a new instance of Value
func NewValue(value []byte) Value {
return Value{value: value}
}
// IsEmpty returns true if the Value is empty.
func (value Value) IsEmpty() bool {
return len(value.value) == 0
}
// String returns the string representation of Value.
func (value Value) String() string {
return string(value.value)
}
// SizeInBytes returns the length of the raw byte slice.
func (value Value) SizeInBytes() int {
return len(value.value)
}
// SizeAsUint32 returns the size as uint32.
func (value Value) SizeAsUint32() uint32 {
return uint32(value.SizeInBytes())
}
// EncodeTo writes the raw byte slice to the provided buffer.
// It is mainly called from external.SkipList.
func (value *Value) EncodeTo(buffer []byte) uint32 {
return uint32(copy(buffer, value.value))
}
// DecodeFrom sets the provided byte slice as its value.
// It is mainly called from external.SkipList.
func (value *Value) DecodeFrom(buffer []byte) {
value.value = buffer
}
// Bytes returns the raw value.
func (value Value) Bytes() []byte {
return value.value
}