529ddbbec2
All numbers in encoded keys are now encoded into float64, ensuring that decimal numbers are sorted alongside integers. The maximum number able to be stored as a float64, without losing precision, is now (1<<53 - 1) - the same maximum number possible in javascript.
77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package keys
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import "time"
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const (
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// Ignore specifies an ignored field
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Ignore = ignore
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// Prefix is the lowest char found in a key
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Prefix = prefix
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// Suffix is the highest char found in a key
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Suffix = suffix
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// Ignore specifies an ignored field
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ignore = "\x01"
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// Prefix is the lowest char found in a key
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prefix = "\x00"
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// Suffix is the highest char found in a key
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suffix = "\xff"
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)
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var (
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// StartOfTime is a datetime in the past
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StartOfTime = time.Unix(0, 0)
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// EndOfTime is a datetime in the future
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EndOfTime = time.Now().AddDate(50, 0, 0)
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)
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var (
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cTERM = uint8(0x00)
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cPREFIX = uint8(0x01)
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cNILL = uint8(0x02)
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cBOOL = uint8(0x03)
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cTIME = uint8(0x04)
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cNUMBER = uint8(0x05)
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cSTRING = uint8(0x06)
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cARRAY = uint8(0x07)
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cSUFFIX = uint8(0x08)
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)
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var (
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bTERM = []byte("\x00")
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bPREFIX = []byte("\x01")
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bNILL = []byte("\x02")
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bBOOL = []byte("\x03")
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bTIME = []byte("\x04")
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bNUMBER = []byte("\x05")
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bSTRING = []byte("\x06")
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bARRAY = []byte("\x07")
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bSUFFIX = []byte("\x08")
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)
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const (
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// MinNumber is the minimum number to be encoded and decoded
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MinNumber = -1 << 53
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// MaxNumber is the maximum number to be encoded and decoded
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MaxNumber = 1<<53 - 1
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)
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// Key ...
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type Key interface {
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String() string
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Encode() []byte
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Decode(data []byte)
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}
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