30 lines
502 B
Go
30 lines
502 B
Go
package object
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import "hash/fnv"
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type Hashable interface {
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HashKey() HashKey
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}
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type HashKey struct {
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Type ObjectType
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Value uint64
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}
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func (b *Boolean) HashKey() HashKey {
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var val uint64 = 0
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if b.Value {
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val = 1
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}
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return HashKey{Type: b.Type(), Value: val}
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}
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func (i *Integer) HashKey() HashKey {
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return HashKey{Type: i.Type(), Value: uint64(i.Value)}
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}
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func (s *String) HashKey() HashKey {
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h := fnv.New64()
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h.Write([]byte(s.Value))
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return HashKey{Type: s.Type(), Value: h.Sum64()}
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}
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