diff options
Diffstat (limited to 'vendor/github.com/ugorji/go/codec/simple.base.go')
| -rw-r--r-- | vendor/github.com/ugorji/go/codec/simple.base.go | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/vendor/github.com/ugorji/go/codec/simple.base.go b/vendor/github.com/ugorji/go/codec/simple.base.go new file mode 100644 index 000000000..2522282cf --- /dev/null +++ b/vendor/github.com/ugorji/go/codec/simple.base.go @@ -0,0 +1,97 @@ +// Copyright (c) 2012-2020 Ugorji Nwoke. All rights reserved. +// Use of this source code is governed by a MIT license found in the LICENSE file. + +package codec + +import ( + "reflect" +) + +const ( + _ uint8 = iota + simpleVdNil = 1 + simpleVdFalse = 2 + simpleVdTrue = 3 + simpleVdFloat32 = 4 + simpleVdFloat64 = 5 + + // each lasts for 4 (ie n, n+1, n+2, n+3) + simpleVdPosInt = 8 + simpleVdNegInt = 12 + + simpleVdTime = 24 + + // containers: each lasts for 8 (ie n, n+1, n+2, ... n+7) + simpleVdString = 216 + simpleVdByteArray = 224 + simpleVdArray = 232 + simpleVdMap = 240 + simpleVdExt = 248 +) + +var simpledescNames = map[byte]string{ + simpleVdNil: "null", + simpleVdFalse: "false", + simpleVdTrue: "true", + simpleVdFloat32: "float32", + simpleVdFloat64: "float64", + + simpleVdPosInt: "+int", + simpleVdNegInt: "-int", + + simpleVdTime: "time", + + simpleVdString: "string", + simpleVdByteArray: "binary", + simpleVdArray: "array", + simpleVdMap: "map", + simpleVdExt: "ext", +} + +func simpledesc(bd byte) (s string) { + s = simpledescNames[bd] + if s == "" { + s = "unknown" + } + return +} + +//------------------------------------ + +// SimpleHandle is a Handle for a very simple encoding format. +// +// simple is a simplistic codec similar to binc, but not as compact. +// - Encoding of a value is always preceded by the descriptor byte (bd) +// - True, false, nil are encoded fully in 1 byte (the descriptor) +// - Integers (intXXX, uintXXX) are encoded in 1, 2, 4 or 8 bytes (plus a descriptor byte). +// There are positive (uintXXX and intXXX >= 0) and negative (intXXX < 0) integers. +// - Floats are encoded in 4 or 8 bytes (plus a descriptor byte) +// - Length of containers (strings, bytes, array, map, extensions) +// are encoded in 0, 1, 2, 4 or 8 bytes. +// Zero-length containers have no length encoded. +// For others, the number of bytes is given by pow(2, bd%3) +// - maps are encoded as [bd] [length] [[key][value]]... +// - arrays are encoded as [bd] [length] [value]... +// - extensions are encoded as [bd] [length] [tag] [byte]... +// - strings/bytearrays are encoded as [bd] [length] [byte]... +// - time.Time are encoded as [bd] [length] [byte]... +// +// The full spec will be published soon. +type SimpleHandle struct { + binaryEncodingType + notJsonType + BasicHandle + + // EncZeroValuesAsNil says to encode zero values for numbers, bool, string, etc as nil + EncZeroValuesAsNil bool +} + +// Name returns the name of the handle: simple +func (h *SimpleHandle) Name() string { return "simple" } + +func (h *SimpleHandle) desc(bd byte) string { return simpledesc(bd) } + +// SetBytesExt sets an extension +func (h *SimpleHandle) SetBytesExt(rt reflect.Type, tag uint64, ext BytesExt) (err error) { + return h.SetExt(rt, tag, makeExt(ext)) +} |
