diff options
Diffstat (limited to 'kube2msb/src/vendor/github.com/ugorji/go/codec/simple.go')
| -rw-r--r-- | kube2msb/src/vendor/github.com/ugorji/go/codec/simple.go | 519 |
1 files changed, 0 insertions, 519 deletions
diff --git a/kube2msb/src/vendor/github.com/ugorji/go/codec/simple.go b/kube2msb/src/vendor/github.com/ugorji/go/codec/simple.go deleted file mode 100644 index 7c0ba7a..0000000 --- a/kube2msb/src/vendor/github.com/ugorji/go/codec/simple.go +++ /dev/null @@ -1,519 +0,0 @@ -// Copyright (c) 2012-2015 Ugorji Nwoke. All rights reserved. -// Use of this source code is governed by a MIT license found in the LICENSE file. - -package codec - -import ( - "math" - "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 - - // containers: each lasts for 4 (ie n, n+1, n+2, ... n+7) - simpleVdString = 216 - simpleVdByteArray = 224 - simpleVdArray = 232 - simpleVdMap = 240 - simpleVdExt = 248 -) - -type simpleEncDriver struct { - noBuiltInTypes - encNoSeparator - e *Encoder - h *SimpleHandle - w encWriter - b [8]byte -} - -func (e *simpleEncDriver) EncodeNil() { - e.w.writen1(simpleVdNil) -} - -func (e *simpleEncDriver) EncodeBool(b bool) { - if b { - e.w.writen1(simpleVdTrue) - } else { - e.w.writen1(simpleVdFalse) - } -} - -func (e *simpleEncDriver) EncodeFloat32(f float32) { - e.w.writen1(simpleVdFloat32) - bigenHelper{e.b[:4], e.w}.writeUint32(math.Float32bits(f)) -} - -func (e *simpleEncDriver) EncodeFloat64(f float64) { - e.w.writen1(simpleVdFloat64) - bigenHelper{e.b[:8], e.w}.writeUint64(math.Float64bits(f)) -} - -func (e *simpleEncDriver) EncodeInt(v int64) { - if v < 0 { - e.encUint(uint64(-v), simpleVdNegInt) - } else { - e.encUint(uint64(v), simpleVdPosInt) - } -} - -func (e *simpleEncDriver) EncodeUint(v uint64) { - e.encUint(v, simpleVdPosInt) -} - -func (e *simpleEncDriver) encUint(v uint64, bd uint8) { - if v <= math.MaxUint8 { - e.w.writen2(bd, uint8(v)) - } else if v <= math.MaxUint16 { - e.w.writen1(bd + 1) - bigenHelper{e.b[:2], e.w}.writeUint16(uint16(v)) - } else if v <= math.MaxUint32 { - e.w.writen1(bd + 2) - bigenHelper{e.b[:4], e.w}.writeUint32(uint32(v)) - } else { // if v <= math.MaxUint64 { - e.w.writen1(bd + 3) - bigenHelper{e.b[:8], e.w}.writeUint64(v) - } -} - -func (e *simpleEncDriver) encLen(bd byte, length int) { - if length == 0 { - e.w.writen1(bd) - } else if length <= math.MaxUint8 { - e.w.writen1(bd + 1) - e.w.writen1(uint8(length)) - } else if length <= math.MaxUint16 { - e.w.writen1(bd + 2) - bigenHelper{e.b[:2], e.w}.writeUint16(uint16(length)) - } else if int64(length) <= math.MaxUint32 { - e.w.writen1(bd + 3) - bigenHelper{e.b[:4], e.w}.writeUint32(uint32(length)) - } else { - e.w.writen1(bd + 4) - bigenHelper{e.b[:8], e.w}.writeUint64(uint64(length)) - } -} - -func (e *simpleEncDriver) EncodeExt(rv interface{}, xtag uint64, ext Ext, _ *Encoder) { - bs := ext.WriteExt(rv) - if bs == nil { - e.EncodeNil() - return - } - e.encodeExtPreamble(uint8(xtag), len(bs)) - e.w.writeb(bs) -} - -func (e *simpleEncDriver) EncodeRawExt(re *RawExt, _ *Encoder) { - e.encodeExtPreamble(uint8(re.Tag), len(re.Data)) - e.w.writeb(re.Data) -} - -func (e *simpleEncDriver) encodeExtPreamble(xtag byte, length int) { - e.encLen(simpleVdExt, length) - e.w.writen1(xtag) -} - -func (e *simpleEncDriver) EncodeArrayStart(length int) { - e.encLen(simpleVdArray, length) -} - -func (e *simpleEncDriver) EncodeMapStart(length int) { - e.encLen(simpleVdMap, length) -} - -func (e *simpleEncDriver) EncodeString(c charEncoding, v string) { - e.encLen(simpleVdString, len(v)) - e.w.writestr(v) -} - -func (e *simpleEncDriver) EncodeSymbol(v string) { - e.EncodeString(c_UTF8, v) -} - -func (e *simpleEncDriver) EncodeStringBytes(c charEncoding, v []byte) { - e.encLen(simpleVdByteArray, len(v)) - e.w.writeb(v) -} - -//------------------------------------ - -type simpleDecDriver struct { - d *Decoder - h *SimpleHandle - r decReader - bdRead bool - bd byte - br bool // bytes reader - noBuiltInTypes - noStreamingCodec - decNoSeparator - b [scratchByteArrayLen]byte -} - -func (d *simpleDecDriver) readNextBd() { - d.bd = d.r.readn1() - d.bdRead = true -} - -func (d *simpleDecDriver) ContainerType() (vt valueType) { - if d.bd == simpleVdNil { - return valueTypeNil - } else if d.bd == simpleVdByteArray || d.bd == simpleVdByteArray+1 || - d.bd == simpleVdByteArray+2 || d.bd == simpleVdByteArray+3 || d.bd == simpleVdByteArray+4 { - return valueTypeBytes - } else if d.bd == simpleVdString || d.bd == simpleVdString+1 || - d.bd == simpleVdString+2 || d.bd == simpleVdString+3 || d.bd == simpleVdString+4 { - return valueTypeString - } else if d.bd == simpleVdArray || d.bd == simpleVdArray+1 || - d.bd == simpleVdArray+2 || d.bd == simpleVdArray+3 || d.bd == simpleVdArray+4 { - return valueTypeArray - } else if d.bd == simpleVdMap || d.bd == simpleVdMap+1 || - d.bd == simpleVdMap+2 || d.bd == simpleVdMap+3 || d.bd == simpleVdMap+4 { - return valueTypeMap - } else { - // d.d.errorf("isContainerType: unsupported parameter: %v", vt) - } - return valueTypeUnset -} - -func (d *simpleDecDriver) TryDecodeAsNil() bool { - if !d.bdRead { - d.readNextBd() - } - if d.bd == simpleVdNil { - d.bdRead = false - return true - } - return false -} - -func (d *simpleDecDriver) decCheckInteger() (ui uint64, neg bool) { - if !d.bdRead { - d.readNextBd() - } - switch d.bd { - case simpleVdPosInt: - ui = uint64(d.r.readn1()) - case simpleVdPosInt + 1: - ui = uint64(bigen.Uint16(d.r.readx(2))) - case simpleVdPosInt + 2: - ui = uint64(bigen.Uint32(d.r.readx(4))) - case simpleVdPosInt + 3: - ui = uint64(bigen.Uint64(d.r.readx(8))) - case simpleVdNegInt: - ui = uint64(d.r.readn1()) - neg = true - case simpleVdNegInt + 1: - ui = uint64(bigen.Uint16(d.r.readx(2))) - neg = true - case simpleVdNegInt + 2: - ui = uint64(bigen.Uint32(d.r.readx(4))) - neg = true - case simpleVdNegInt + 3: - ui = uint64(bigen.Uint64(d.r.readx(8))) - neg = true - default: - d.d.errorf("decIntAny: Integer only valid from pos/neg integer1..8. Invalid descriptor: %v", d.bd) - return - } - // don't do this check, because callers may only want the unsigned value. - // if ui > math.MaxInt64 { - // d.d.errorf("decIntAny: Integer out of range for signed int64: %v", ui) - // return - // } - return -} - -func (d *simpleDecDriver) DecodeInt(bitsize uint8) (i int64) { - ui, neg := d.decCheckInteger() - i, overflow := chkOvf.SignedInt(ui) - if overflow { - d.d.errorf("simple: overflow converting %v to signed integer", ui) - return - } - if neg { - i = -i - } - if chkOvf.Int(i, bitsize) { - d.d.errorf("simple: overflow integer: %v", i) - return - } - d.bdRead = false - return -} - -func (d *simpleDecDriver) DecodeUint(bitsize uint8) (ui uint64) { - ui, neg := d.decCheckInteger() - if neg { - d.d.errorf("Assigning negative signed value to unsigned type") - return - } - if chkOvf.Uint(ui, bitsize) { - d.d.errorf("simple: overflow integer: %v", ui) - return - } - d.bdRead = false - return -} - -func (d *simpleDecDriver) DecodeFloat(chkOverflow32 bool) (f float64) { - if !d.bdRead { - d.readNextBd() - } - if d.bd == simpleVdFloat32 { - f = float64(math.Float32frombits(bigen.Uint32(d.r.readx(4)))) - } else if d.bd == simpleVdFloat64 { - f = math.Float64frombits(bigen.Uint64(d.r.readx(8))) - } else { - if d.bd >= simpleVdPosInt && d.bd <= simpleVdNegInt+3 { - f = float64(d.DecodeInt(64)) - } else { - d.d.errorf("Float only valid from float32/64: Invalid descriptor: %v", d.bd) - return - } - } - if chkOverflow32 && chkOvf.Float32(f) { - d.d.errorf("msgpack: float32 overflow: %v", f) - return - } - d.bdRead = false - return -} - -// bool can be decoded from bool only (single byte). -func (d *simpleDecDriver) DecodeBool() (b bool) { - if !d.bdRead { - d.readNextBd() - } - if d.bd == simpleVdTrue { - b = true - } else if d.bd == simpleVdFalse { - } else { - d.d.errorf("Invalid single-byte value for bool: %s: %x", msgBadDesc, d.bd) - return - } - d.bdRead = false - return -} - -func (d *simpleDecDriver) ReadMapStart() (length int) { - d.bdRead = false - return d.decLen() -} - -func (d *simpleDecDriver) ReadArrayStart() (length int) { - d.bdRead = false - return d.decLen() -} - -func (d *simpleDecDriver) decLen() int { - switch d.bd % 8 { - case 0: - return 0 - case 1: - return int(d.r.readn1()) - case 2: - return int(bigen.Uint16(d.r.readx(2))) - case 3: - ui := uint64(bigen.Uint32(d.r.readx(4))) - if chkOvf.Uint(ui, intBitsize) { - d.d.errorf("simple: overflow integer: %v", ui) - return 0 - } - return int(ui) - case 4: - ui := bigen.Uint64(d.r.readx(8)) - if chkOvf.Uint(ui, intBitsize) { - d.d.errorf("simple: overflow integer: %v", ui) - return 0 - } - return int(ui) - } - d.d.errorf("decLen: Cannot read length: bd%8 must be in range 0..4. Got: %d", d.bd%8) - return -1 -} - -func (d *simpleDecDriver) DecodeString() (s string) { - return string(d.DecodeBytes(d.b[:], true, true)) -} - -func (d *simpleDecDriver) DecodeBytes(bs []byte, isstring, zerocopy bool) (bsOut []byte) { - if !d.bdRead { - d.readNextBd() - } - if d.bd == simpleVdNil { - d.bdRead = false - return - } - clen := d.decLen() - d.bdRead = false - if zerocopy { - if d.br { - return d.r.readx(clen) - } else if len(bs) == 0 { - bs = d.b[:] - } - } - return decByteSlice(d.r, clen, bs) -} - -func (d *simpleDecDriver) DecodeExt(rv interface{}, xtag uint64, ext Ext) (realxtag uint64) { - if xtag > 0xff { - d.d.errorf("decodeExt: tag must be <= 0xff; got: %v", xtag) - return - } - realxtag1, xbs := d.decodeExtV(ext != nil, uint8(xtag)) - realxtag = uint64(realxtag1) - if ext == nil { - re := rv.(*RawExt) - re.Tag = realxtag - re.Data = detachZeroCopyBytes(d.br, re.Data, xbs) - } else { - ext.ReadExt(rv, xbs) - } - return -} - -func (d *simpleDecDriver) decodeExtV(verifyTag bool, tag byte) (xtag byte, xbs []byte) { - if !d.bdRead { - d.readNextBd() - } - switch d.bd { - case simpleVdExt, simpleVdExt + 1, simpleVdExt + 2, simpleVdExt + 3, simpleVdExt + 4: - l := d.decLen() - xtag = d.r.readn1() - if verifyTag && xtag != tag { - d.d.errorf("Wrong extension tag. Got %b. Expecting: %v", xtag, tag) - return - } - xbs = d.r.readx(l) - case simpleVdByteArray, simpleVdByteArray + 1, simpleVdByteArray + 2, simpleVdByteArray + 3, simpleVdByteArray + 4: - xbs = d.DecodeBytes(nil, false, true) - default: - d.d.errorf("Invalid d.bd for extensions (Expecting extensions or byte array). Got: 0x%x", d.bd) - return - } - d.bdRead = false - return -} - -func (d *simpleDecDriver) DecodeNaked() { - if !d.bdRead { - d.readNextBd() - } - - n := &d.d.n - var decodeFurther bool - - switch d.bd { - case simpleVdNil: - n.v = valueTypeNil - case simpleVdFalse: - n.v = valueTypeBool - n.b = false - case simpleVdTrue: - n.v = valueTypeBool - n.b = true - case simpleVdPosInt, simpleVdPosInt + 1, simpleVdPosInt + 2, simpleVdPosInt + 3: - if d.h.SignedInteger { - n.v = valueTypeInt - n.i = d.DecodeInt(64) - } else { - n.v = valueTypeUint - n.u = d.DecodeUint(64) - } - case simpleVdNegInt, simpleVdNegInt + 1, simpleVdNegInt + 2, simpleVdNegInt + 3: - n.v = valueTypeInt - n.i = d.DecodeInt(64) - case simpleVdFloat32: - n.v = valueTypeFloat - n.f = d.DecodeFloat(true) - case simpleVdFloat64: - n.v = valueTypeFloat - n.f = d.DecodeFloat(false) - case simpleVdString, simpleVdString + 1, simpleVdString + 2, simpleVdString + 3, simpleVdString + 4: - n.v = valueTypeString - n.s = d.DecodeString() - case simpleVdByteArray, simpleVdByteArray + 1, simpleVdByteArray + 2, simpleVdByteArray + 3, simpleVdByteArray + 4: - n.v = valueTypeBytes - n.l = d.DecodeBytes(nil, false, false) - case simpleVdExt, simpleVdExt + 1, simpleVdExt + 2, simpleVdExt + 3, simpleVdExt + 4: - n.v = valueTypeExt - l := d.decLen() - n.u = uint64(d.r.readn1()) - n.l = d.r.readx(l) - case simpleVdArray, simpleVdArray + 1, simpleVdArray + 2, simpleVdArray + 3, simpleVdArray + 4: - n.v = valueTypeArray - decodeFurther = true - case simpleVdMap, simpleVdMap + 1, simpleVdMap + 2, simpleVdMap + 3, simpleVdMap + 4: - n.v = valueTypeMap - decodeFurther = true - default: - d.d.errorf("decodeNaked: Unrecognized d.bd: 0x%x", d.bd) - } - - if !decodeFurther { - d.bdRead = false - } - 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 preceeded 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) -// - Lenght 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]... -// -// The full spec will be published soon. -type SimpleHandle struct { - BasicHandle - binaryEncodingType -} - -func (h *SimpleHandle) SetBytesExt(rt reflect.Type, tag uint64, ext BytesExt) (err error) { - return h.SetExt(rt, tag, &setExtWrapper{b: ext}) -} - -func (h *SimpleHandle) newEncDriver(e *Encoder) encDriver { - return &simpleEncDriver{e: e, w: e.w, h: h} -} - -func (h *SimpleHandle) newDecDriver(d *Decoder) decDriver { - return &simpleDecDriver{d: d, r: d.r, h: h, br: d.bytes} -} - -func (e *simpleEncDriver) reset() { - e.w = e.e.w -} - -func (d *simpleDecDriver) reset() { - d.r = d.d.r - d.bd, d.bdRead = 0, false -} - -var _ decDriver = (*simpleDecDriver)(nil) -var _ encDriver = (*simpleEncDriver)(nil) |