mirror of
https://github.com/MontFerret/ferret.git
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f91fbf6f8c
* rename method Clone to Copy * added Cloneable interface * added Value to Cloneable interface * implemented Cloneable intefrace by array * implemented Cloneable interface by Object * unit tests for Object.Clone * move core.IsCloneable to value.go * change Clone function * move IsClonable to package values
43 lines
578 B
Go
43 lines
578 B
Go
package values
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import (
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"github.com/MontFerret/ferret/pkg/runtime/core"
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)
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type none struct{}
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var None = &none{}
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func (t *none) MarshalJSON() ([]byte, error) {
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return []byte("null"), nil
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}
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func (t *none) Type() core.Type {
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return core.NoneType
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}
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func (t *none) String() string {
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return ""
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}
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func (t *none) Compare(other core.Value) int {
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switch other.Type() {
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case core.NoneType:
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return 0
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default:
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return -1
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}
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}
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func (t *none) Unwrap() interface{} {
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return nil
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}
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func (t *none) Hash() uint64 {
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return 0
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}
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func (t *none) Copy() core.Value {
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return None
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}
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