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71 lines
1.6 KiB
71 lines
1.6 KiB
package merkle
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import "bytes"
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type String string
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type ByteSlice []byte
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// String
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func (self String) Equals(other Binary) bool {
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return self == other
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}
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func (self String) Less(other Key) bool {
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if o, ok := other.(String); ok {
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return self < o
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} else {
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panic("Cannot compare unequal types")
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}
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}
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func (self String) ByteSize() int {
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return len(self)+4
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}
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func (self String) SaveTo(buf []byte) int {
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if len(buf) < self.ByteSize() { panic("buf too small") }
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UInt32(len(self)).SaveTo(buf)
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copy(buf[4:], []byte(self))
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return len(self)+4
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}
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func LoadString(bytes []byte, start int) (String, int) {
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length := int(LoadUInt32(bytes[start:]))
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return String(bytes[start+4:start+4+length]), start+4+length
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}
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// ByteSlice
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func (self ByteSlice) Equals(other Binary) bool {
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if o, ok := other.(ByteSlice); ok {
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return bytes.Equal(self, o)
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} else {
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return false
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}
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}
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func (self ByteSlice) Less(other Key) bool {
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if o, ok := other.(ByteSlice); ok {
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return bytes.Compare(self, o) < 0 // -1 if a < b
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} else {
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panic("Cannot compare unequal types")
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}
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}
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func (self ByteSlice) ByteSize() int {
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return len(self)+4
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}
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func (self ByteSlice) SaveTo(buf []byte) int {
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if len(buf) < self.ByteSize() { panic("buf too small") }
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UInt32(len(self)).SaveTo(buf)
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copy(buf[4:], self)
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return len(self)+4
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}
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func LoadByteSlice(bytes []byte, start int) (ByteSlice, int) {
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length := int(LoadUInt32(bytes[start:]))
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return ByteSlice(bytes[start+4:start+4+length]), start+4+length
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}
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