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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// Author: arnej
package slime
import (
"math"
)
func BinaryEncode(s Slime) []byte {
codec := newBinaryEncoder()
codec.encodeValue(s.Get())
return codec.prependSymbolTable()
}
func BinaryDecode(input []byte) Slime {
codec := newBinaryDecoder(input)
codec.decodeSymbolTable()
root := codec.decodeValue()
s := Slime{root}
if codec.failed {
s.Wrap("partial_result")
s.Get().SetString("error_message", codec.failure)
s.Get().SetLong("buffer_position", int64(codec.pos))
}
return s
}
func encode_zigzag(x int64) uint64 {
bot63 := x << 1
inv := x >> 63 // note: ASR because x is signed
return uint64(bot63 ^ inv)
}
func decode_zigzag(x uint64) int64 {
top63 := int64(x >> 1) // note: LSR because x is unsigned
inv := -int64(x & 1)
return top63 ^ inv
}
func encode_double(x float64) uint64 {
return math.Float64bits(x)
}
func decode_double(x uint64) float64 {
return math.Float64frombits(x)
}
func encode_type_and_meta(t Type, meta uint32) byte {
return byte((meta << 3) | (uint32(t) & 0x7))
}
func decode_type(type_and_meta byte) Type {
return Type(type_and_meta & 0x7)
}
func decode_meta(type_and_meta byte) uint32 {
return uint32(type_and_meta >> 3)
}
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