diff options
Diffstat (limited to 'vendor/github.com/tinylib/msgp')
22 files changed, 6850 insertions, 0 deletions
diff --git a/vendor/github.com/tinylib/msgp/LICENSE b/vendor/github.com/tinylib/msgp/LICENSE new file mode 100644 index 00000000..14d60424 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/LICENSE @@ -0,0 +1,8 @@ +Copyright (c) 2014 Philip Hofer +Portions Copyright (c) 2009 The Go Authors (license at http://golang.org) where indicated + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file diff --git a/vendor/github.com/tinylib/msgp/msgp/advise_linux.go b/vendor/github.com/tinylib/msgp/msgp/advise_linux.go new file mode 100644 index 00000000..6c6bb37a --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/advise_linux.go @@ -0,0 +1,24 @@ +// +build linux,!appengine + +package msgp + +import ( + "os" + "syscall" +) + +func adviseRead(mem []byte) { + syscall.Madvise(mem, syscall.MADV_SEQUENTIAL|syscall.MADV_WILLNEED) +} + +func adviseWrite(mem []byte) { + syscall.Madvise(mem, syscall.MADV_SEQUENTIAL) +} + +func fallocate(f *os.File, sz int64) error { + err := syscall.Fallocate(int(f.Fd()), 0, 0, sz) + if err == syscall.ENOTSUP { + return f.Truncate(sz) + } + return err +} diff --git a/vendor/github.com/tinylib/msgp/msgp/advise_other.go b/vendor/github.com/tinylib/msgp/msgp/advise_other.go new file mode 100644 index 00000000..da65ea54 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/advise_other.go @@ -0,0 +1,17 @@ +// +build !linux appengine + +package msgp + +import ( + "os" +) + +// TODO: darwin, BSD support + +func adviseRead(mem []byte) {} + +func adviseWrite(mem []byte) {} + +func fallocate(f *os.File, sz int64) error { + return f.Truncate(sz) +} diff --git a/vendor/github.com/tinylib/msgp/msgp/circular.go b/vendor/github.com/tinylib/msgp/msgp/circular.go new file mode 100644 index 00000000..a0434c7e --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/circular.go @@ -0,0 +1,39 @@ +package msgp + +type timer interface { + StartTimer() + StopTimer() +} + +// EndlessReader is an io.Reader +// that loops over the same data +// endlessly. It is used for benchmarking. +type EndlessReader struct { + tb timer + data []byte + offset int +} + +// NewEndlessReader returns a new endless reader +func NewEndlessReader(b []byte, tb timer) *EndlessReader { + return &EndlessReader{tb: tb, data: b, offset: 0} +} + +// Read implements io.Reader. In practice, it +// always returns (len(p), nil), although it +// fills the supplied slice while the benchmark +// timer is stopped. +func (c *EndlessReader) Read(p []byte) (int, error) { + c.tb.StopTimer() + var n int + l := len(p) + m := len(c.data) + for n < l { + nn := copy(p[n:], c.data[c.offset:]) + n += nn + c.offset += nn + c.offset %= m + } + c.tb.StartTimer() + return n, nil +} diff --git a/vendor/github.com/tinylib/msgp/msgp/defs.go b/vendor/github.com/tinylib/msgp/msgp/defs.go new file mode 100644 index 00000000..c634eef1 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/defs.go @@ -0,0 +1,142 @@ +// This package is the support library for the msgp code generator (http://github.com/tinylib/msgp). +// +// This package defines the utilites used by the msgp code generator for encoding and decoding MessagePack +// from []byte and io.Reader/io.Writer types. Much of this package is devoted to helping the msgp code +// generator implement the Marshaler/Unmarshaler and Encodable/Decodable interfaces. +// +// This package defines four "families" of functions: +// - AppendXxxx() appends an object to a []byte in MessagePack encoding. +// - ReadXxxxBytes() reads an object from a []byte and returns the remaining bytes. +// - (*Writer).WriteXxxx() writes an object to the buffered *Writer type. +// - (*Reader).ReadXxxx() reads an object from a buffered *Reader type. +// +// Once a type has satisfied the `Encodable` and `Decodable` interfaces, +// it can be written and read from arbitrary `io.Writer`s and `io.Reader`s using +// msgp.Encode(io.Writer, msgp.Encodable) +// and +// msgp.Decode(io.Reader, msgp.Decodable) +// +// There are also methods for converting MessagePack to JSON without +// an explicit de-serialization step. +// +// For additional tips, tricks, and gotchas, please visit +// the wiki at http://github.com/tinylib/msgp +package msgp + +const last4 = 0x0f +const first4 = 0xf0 +const last5 = 0x1f +const first3 = 0xe0 +const last7 = 0x7f + +func isfixint(b byte) bool { + return b>>7 == 0 +} + +func isnfixint(b byte) bool { + return b&first3 == mnfixint +} + +func isfixmap(b byte) bool { + return b&first4 == mfixmap +} + +func isfixarray(b byte) bool { + return b&first4 == mfixarray +} + +func isfixstr(b byte) bool { + return b&first3 == mfixstr +} + +func wfixint(u uint8) byte { + return u & last7 +} + +func rfixint(b byte) uint8 { + return b +} + +func wnfixint(i int8) byte { + return byte(i) | mnfixint +} + +func rnfixint(b byte) int8 { + return int8(b) +} + +func rfixmap(b byte) uint8 { + return b & last4 +} + +func wfixmap(u uint8) byte { + return mfixmap | (u & last4) +} + +func rfixstr(b byte) uint8 { + return b & last5 +} + +func wfixstr(u uint8) byte { + return (u & last5) | mfixstr +} + +func rfixarray(b byte) uint8 { + return (b & last4) +} + +func wfixarray(u uint8) byte { + return (u & last4) | mfixarray +} + +// These are all the byte +// prefixes defined by the +// msgpack standard +const ( + // 0XXXXXXX + mfixint uint8 = 0x00 + + // 111XXXXX + mnfixint uint8 = 0xe0 + + // 1000XXXX + mfixmap uint8 = 0x80 + + // 1001XXXX + mfixarray uint8 = 0x90 + + // 101XXXXX + mfixstr uint8 = 0xa0 + + mnil uint8 = 0xc0 + mfalse uint8 = 0xc2 + mtrue uint8 = 0xc3 + mbin8 uint8 = 0xc4 + mbin16 uint8 = 0xc5 + mbin32 uint8 = 0xc6 + mext8 uint8 = 0xc7 + mext16 uint8 = 0xc8 + mext32 uint8 = 0xc9 + mfloat32 uint8 = 0xca + mfloat64 uint8 = 0xcb + muint8 uint8 = 0xcc + muint16 uint8 = 0xcd + muint32 uint8 = 0xce + muint64 uint8 = 0xcf + mint8 uint8 = 0xd0 + mint16 uint8 = 0xd1 + mint32 uint8 = 0xd2 + mint64 uint8 = 0xd3 + mfixext1 uint8 = 0xd4 + mfixext2 uint8 = 0xd5 + mfixext4 uint8 = 0xd6 + mfixext8 uint8 = 0xd7 + mfixext16 uint8 = 0xd8 + mstr8 uint8 = 0xd9 + mstr16 uint8 = 0xda + mstr32 uint8 = 0xdb + marray16 uint8 = 0xdc + marray32 uint8 = 0xdd + mmap16 uint8 = 0xde + mmap32 uint8 = 0xdf +) diff --git a/vendor/github.com/tinylib/msgp/msgp/edit.go b/vendor/github.com/tinylib/msgp/msgp/edit.go new file mode 100644 index 00000000..b473a6f6 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/edit.go @@ -0,0 +1,242 @@ +package msgp + +import ( + "math" +) + +// Locate returns a []byte pointing to the field +// in a messagepack map with the provided key. (The returned []byte +// points to a sub-slice of 'raw'; Locate does no allocations.) If the +// key doesn't exist in the map, a zero-length []byte will be returned. +func Locate(key string, raw []byte) []byte { + s, n := locate(raw, key) + return raw[s:n] +} + +// Replace takes a key ("key") in a messagepack map ("raw") +// and replaces its value with the one provided and returns +// the new []byte. The returned []byte may point to the same +// memory as "raw". Replace makes no effort to evaluate the validity +// of the contents of 'val'. It may use up to the full capacity of 'raw.' +// Replace returns 'nil' if the field doesn't exist or if the object in 'raw' +// is not a map. +func Replace(key string, raw []byte, val []byte) []byte { + start, end := locate(raw, key) + if start == end { + return nil + } + return replace(raw, start, end, val, true) +} + +// CopyReplace works similarly to Replace except that the returned +// byte slice does not point to the same memory as 'raw'. CopyReplace +// returns 'nil' if the field doesn't exist or 'raw' isn't a map. +func CopyReplace(key string, raw []byte, val []byte) []byte { + start, end := locate(raw, key) + if start == end { + return nil + } + return replace(raw, start, end, val, false) +} + +// Remove removes a key-value pair from 'raw'. It returns +// 'raw' unchanged if the key didn't exist. +func Remove(key string, raw []byte) []byte { + start, end := locateKV(raw, key) + if start == end { + return raw + } + raw = raw[:start+copy(raw[start:], raw[end:])] + return resizeMap(raw, -1) +} + +// HasKey returns whether the map in 'raw' has +// a field with key 'key' +func HasKey(key string, raw []byte) bool { + sz, bts, err := ReadMapHeaderBytes(raw) + if err != nil { + return false + } + var field []byte + for i := uint32(0); i < sz; i++ { + field, bts, err = ReadStringZC(bts) + if err != nil { + return false + } + if UnsafeString(field) == key { + return true + } + } + return false +} + +func replace(raw []byte, start int, end int, val []byte, inplace bool) []byte { + ll := end - start // length of segment to replace + lv := len(val) + + if inplace { + extra := lv - ll + + // fastest case: we're doing + // a 1:1 replacement + if extra == 0 { + copy(raw[start:], val) + return raw + + } else if extra < 0 { + // 'val' smaller than replaced value + // copy in place and shift back + + x := copy(raw[start:], val) + y := copy(raw[start+x:], raw[end:]) + return raw[:start+x+y] + + } else if extra < cap(raw)-len(raw) { + // 'val' less than (cap-len) extra bytes + // copy in place and shift forward + raw = raw[0 : len(raw)+extra] + // shift end forward + copy(raw[end+extra:], raw[end:]) + copy(raw[start:], val) + return raw + } + } + + // we have to allocate new space + out := make([]byte, len(raw)+len(val)-ll) + x := copy(out, raw[:start]) + y := copy(out[x:], val) + copy(out[x+y:], raw[end:]) + return out +} + +// locate does a naive O(n) search for the map key; returns start, end +// (returns 0,0 on error) +func locate(raw []byte, key string) (start int, end int) { + var ( + sz uint32 + bts []byte + field []byte + err error + ) + sz, bts, err = ReadMapHeaderBytes(raw) + if err != nil { + return + } + + // loop and locate field + for i := uint32(0); i < sz; i++ { + field, bts, err = ReadStringZC(bts) + if err != nil { + return 0, 0 + } + if UnsafeString(field) == key { + // start location + l := len(raw) + start = l - len(bts) + bts, err = Skip(bts) + if err != nil { + return 0, 0 + } + end = l - len(bts) + return + } + bts, err = Skip(bts) + if err != nil { + return 0, 0 + } + } + return 0, 0 +} + +// locate key AND value +func locateKV(raw []byte, key string) (start int, end int) { + var ( + sz uint32 + bts []byte + field []byte + err error + ) + sz, bts, err = ReadMapHeaderBytes(raw) + if err != nil { + return 0, 0 + } + + for i := uint32(0); i < sz; i++ { + tmp := len(bts) + field, bts, err = ReadStringZC(bts) + if err != nil { + return 0, 0 + } + if UnsafeString(field) == key { + start = len(raw) - tmp + bts, err = Skip(bts) + if err != nil { + return 0, 0 + } + end = len(raw) - len(bts) + return + } + bts, err = Skip(bts) + if err != nil { + return 0, 0 + } + } + return 0, 0 +} + +// delta is delta on map size +func resizeMap(raw []byte, delta int64) []byte { + var sz int64 + switch raw[0] { + case mmap16: + sz = int64(big.Uint16(raw[1:])) + if sz+delta <= math.MaxUint16 { + big.PutUint16(raw[1:], uint16(sz+delta)) + return raw + } + if cap(raw)-len(raw) >= 2 { + raw = raw[0 : len(raw)+2] + copy(raw[5:], raw[3:]) + raw[0] = mmap32 + big.PutUint32(raw[1:], uint32(sz+delta)) + return raw + } + n := make([]byte, 0, len(raw)+5) + n = AppendMapHeader(n, uint32(sz+delta)) + return append(n, raw[3:]...) + + case mmap32: + sz = int64(big.Uint32(raw[1:])) + big.PutUint32(raw[1:], uint32(sz+delta)) + return raw + + default: + sz = int64(rfixmap(raw[0])) + if sz+delta < 16 { + raw[0] = wfixmap(uint8(sz + delta)) + return raw + } else if sz+delta <= math.MaxUint16 { + if cap(raw)-len(raw) >= 2 { + raw = raw[0 : len(raw)+2] + copy(raw[3:], raw[1:]) + raw[0] = mmap16 + big.PutUint16(raw[1:], uint16(sz+delta)) + return raw + } + n := make([]byte, 0, len(raw)+5) + n = AppendMapHeader(n, uint32(sz+delta)) + return append(n, raw[1:]...) + } + if cap(raw)-len(raw) >= 4 { + raw = raw[0 : len(raw)+4] + copy(raw[5:], raw[1:]) + raw[0] = mmap32 + big.PutUint32(raw[1:], uint32(sz+delta)) + return raw + } + n := make([]byte, 0, len(raw)+5) + n = AppendMapHeader(n, uint32(sz+delta)) + return append(n, raw[1:]...) + } +} diff --git a/vendor/github.com/tinylib/msgp/msgp/elsize.go b/vendor/github.com/tinylib/msgp/msgp/elsize.go new file mode 100644 index 00000000..95762e7e --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/elsize.go @@ -0,0 +1,99 @@ +package msgp + +// size of every object on the wire, +// plus type information. gives us +// constant-time type information +// for traversing composite objects. +// +var sizes = [256]bytespec{ + mnil: {size: 1, extra: constsize, typ: NilType}, + mfalse: {size: 1, extra: constsize, typ: BoolType}, + mtrue: {size: 1, extra: constsize, typ: BoolType}, + mbin8: {size: 2, extra: extra8, typ: BinType}, + mbin16: {size: 3, extra: extra16, typ: BinType}, + mbin32: {size: 5, extra: extra32, typ: BinType}, + mext8: {size: 3, extra: extra8, typ: ExtensionType}, + mext16: {size: 4, extra: extra16, typ: ExtensionType}, + mext32: {size: 6, extra: extra32, typ: ExtensionType}, + mfloat32: {size: 5, extra: constsize, typ: Float32Type}, + mfloat64: {size: 9, extra: constsize, typ: Float64Type}, + muint8: {size: 2, extra: constsize, typ: UintType}, + muint16: {size: 3, extra: constsize, typ: UintType}, + muint32: {size: 5, extra: constsize, typ: UintType}, + muint64: {size: 9, extra: constsize, typ: UintType}, + mint8: {size: 2, extra: constsize, typ: IntType}, + mint16: {size: 3, extra: constsize, typ: IntType}, + mint32: {size: 5, extra: constsize, typ: IntType}, + mint64: {size: 9, extra: constsize, typ: IntType}, + mfixext1: {size: 3, extra: constsize, typ: ExtensionType}, + mfixext2: {size: 4, extra: constsize, typ: ExtensionType}, + mfixext4: {size: 6, extra: constsize, typ: ExtensionType}, + mfixext8: {size: 10, extra: constsize, typ: ExtensionType}, + mfixext16: {size: 18, extra: constsize, typ: ExtensionType}, + mstr8: {size: 2, extra: extra8, typ: StrType}, + mstr16: {size: 3, extra: extra16, typ: StrType}, + mstr32: {size: 5, extra: extra32, typ: StrType}, + marray16: {size: 3, extra: array16v, typ: ArrayType}, + marray32: {size: 5, extra: array32v, typ: ArrayType}, + mmap16: {size: 3, extra: map16v, typ: MapType}, + mmap32: {size: 5, extra: map32v, typ: MapType}, +} + +func init() { + // set up fixed fields + + // fixint + for i := mfixint; i < 0x80; i++ { + sizes[i] = bytespec{size: 1, extra: constsize, typ: IntType} + } + + // nfixint + for i := uint16(mnfixint); i < 0x100; i++ { + sizes[uint8(i)] = bytespec{size: 1, extra: constsize, typ: IntType} + } + + // fixstr gets constsize, + // since the prefix yields the size + for i := mfixstr; i < 0xc0; i++ { + sizes[i] = bytespec{size: 1 + rfixstr(i), extra: constsize, typ: StrType} + } + + // fixmap + for i := mfixmap; i < 0x90; i++ { + sizes[i] = bytespec{size: 1, extra: varmode(2 * rfixmap(i)), typ: MapType} + } + + // fixarray + for i := mfixarray; i < 0xa0; i++ { + sizes[i] = bytespec{size: 1, extra: varmode(rfixarray(i)), typ: ArrayType} + } +} + +// a valid bytespsec has +// non-zero 'size' and +// non-zero 'typ' +type bytespec struct { + size uint8 // prefix size information + extra varmode // extra size information + typ Type // type + _ byte // makes bytespec 4 bytes (yes, this matters) +} + +// size mode +// if positive, # elements for composites +type varmode int8 + +const ( + constsize varmode = 0 // constant size (size bytes + uint8(varmode) objects) + extra8 = -1 // has uint8(p[1]) extra bytes + extra16 = -2 // has be16(p[1:]) extra bytes + extra32 = -3 // has be32(p[1:]) extra bytes + map16v = -4 // use map16 + map32v = -5 // use map32 + array16v = -6 // use array16 + array32v = -7 // use array32 +) + +func getType(v byte) Type { + return sizes[v].typ +} diff --git a/vendor/github.com/tinylib/msgp/msgp/errors.go b/vendor/github.com/tinylib/msgp/msgp/errors.go new file mode 100644 index 00000000..cc78a980 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/errors.go @@ -0,0 +1,314 @@ +package msgp + +import ( + "fmt" + "reflect" +) + +const resumableDefault = false + +var ( + // ErrShortBytes is returned when the + // slice being decoded is too short to + // contain the contents of the message + ErrShortBytes error = errShort{} + + // this error is only returned + // if we reach code that should + // be unreachable + fatal error = errFatal{} +) + +// Error is the interface satisfied +// by all of the errors that originate +// from this package. +type Error interface { + error + + // Resumable returns whether + // or not the error means that + // the stream of data is malformed + // and the information is unrecoverable. + Resumable() bool +} + +// contextError allows msgp Error instances to be enhanced with additional +// context about their origin. +type contextError interface { + Error + + // withContext must not modify the error instance - it must clone and + // return a new error with the context added. + withContext(ctx string) error +} + +// Cause returns the underlying cause of an error that has been wrapped +// with additional context. +func Cause(e error) error { + out := e + if e, ok := e.(errWrapped); ok && e.cause != nil { + out = e.cause + } + return out +} + +// Resumable returns whether or not the error means that the stream of data is +// malformed and the information is unrecoverable. +func Resumable(e error) bool { + if e, ok := e.(Error); ok { + return e.Resumable() + } + return resumableDefault +} + +// WrapError wraps an error with additional context that allows the part of the +// serialized type that caused the problem to be identified. Underlying errors +// can be retrieved using Cause() +// +// The input error is not modified - a new error should be returned. +// +// ErrShortBytes is not wrapped with any context due to backward compatibility +// issues with the public API. +// +func WrapError(err error, ctx ...interface{}) error { + switch e := err.(type) { + case errShort: + return e + case contextError: + return e.withContext(ctxString(ctx)) + default: + return errWrapped{cause: err, ctx: ctxString(ctx)} + } +} + +// ctxString converts the incoming interface{} slice into a single string. +func ctxString(ctx []interface{}) string { + out := "" + for idx, cv := range ctx { + if idx > 0 { + out += "/" + } + out += fmt.Sprintf("%v", cv) + } + return out +} + +func addCtx(ctx, add string) string { + if ctx != "" { + return add + "/" + ctx + } else { + return add + } +} + +// errWrapped allows arbitrary errors passed to WrapError to be enhanced with +// context and unwrapped with Cause() +type errWrapped struct { + cause error + ctx string +} + +func (e errWrapped) Error() string { + if e.ctx != "" { + return fmt.Sprintf("%s at %s", e.cause, e.ctx) + } else { + return e.cause.Error() + } +} + +func (e errWrapped) Resumable() bool { + if e, ok := e.cause.(Error); ok { + return e.Resumable() + } + return resumableDefault +} + +type errShort struct{} + +func (e errShort) Error() string { return "msgp: too few bytes left to read object" } +func (e errShort) Resumable() bool { return false } + +type errFatal struct { + ctx string +} + +func (f errFatal) Error() string { + out := "msgp: fatal decoding error (unreachable code)" + if f.ctx != "" { + out += " at " + f.ctx + } + return out +} + +func (f errFatal) Resumable() bool { return false } + +func (f errFatal) withContext(ctx string) error { f.ctx = addCtx(f.ctx, ctx); return f } + +// ArrayError is an error returned +// when decoding a fix-sized array +// of the wrong size +type ArrayError struct { + Wanted uint32 + Got uint32 + ctx string +} + +// Error implements the error interface +func (a ArrayError) Error() string { + out := fmt.Sprintf("msgp: wanted array of size %d; got %d", a.Wanted, a.Got) + if a.ctx != "" { + out += " at " + a.ctx + } + return out +} + +// Resumable is always 'true' for ArrayErrors +func (a ArrayError) Resumable() bool { return true } + +func (a ArrayError) withContext(ctx string) error { a.ctx = addCtx(a.ctx, ctx); return a } + +// IntOverflow is returned when a call +// would downcast an integer to a type +// with too few bits to hold its value. +type IntOverflow struct { + Value int64 // the value of the integer + FailedBitsize int // the bit size that the int64 could not fit into + ctx string +} + +// Error implements the error interface +func (i IntOverflow) Error() string { + str := fmt.Sprintf("msgp: %d overflows int%d", i.Value, i.FailedBitsize) + if i.ctx != "" { + str += " at " + i.ctx + } + return str +} + +// Resumable is always 'true' for overflows +func (i IntOverflow) Resumable() bool { return true } + +func (i IntOverflow) withContext(ctx string) error { i.ctx = addCtx(i.ctx, ctx); return i } + +// UintOverflow is returned when a call +// would downcast an unsigned integer to a type +// with too few bits to hold its value +type UintOverflow struct { + Value uint64 // value of the uint + FailedBitsize int // the bit size that couldn't fit the value + ctx string +} + +// Error implements the error interface +func (u UintOverflow) Error() string { + str := fmt.Sprintf("msgp: %d overflows uint%d", u.Value, u.FailedBitsize) + if u.ctx != "" { + str += " at " + u.ctx + } + return str +} + +// Resumable is always 'true' for overflows +func (u UintOverflow) Resumable() bool { return true } + +func (u UintOverflow) withContext(ctx string) error { u.ctx = addCtx(u.ctx, ctx); return u } + +// UintBelowZero is returned when a call +// would cast a signed integer below zero +// to an unsigned integer. +type UintBelowZero struct { + Value int64 // value of the incoming int + ctx string +} + +// Error implements the error interface +func (u UintBelowZero) Error() string { + str := fmt.Sprintf("msgp: attempted to cast int %d to unsigned", u.Value) + if u.ctx != "" { + str += " at " + u.ctx + } + return str +} + +// Resumable is always 'true' for overflows +func (u UintBelowZero) Resumable() bool { return true } + +func (u UintBelowZero) withContext(ctx string) error { + u.ctx = ctx + return u +} + +// A TypeError is returned when a particular +// decoding method is unsuitable for decoding +// a particular MessagePack value. +type TypeError struct { + Method Type // Type expected by method + Encoded Type // Type actually encoded + + ctx string +} + +// Error implements the error interface +func (t TypeError) Error() string { + out := fmt.Sprintf("msgp: attempted to decode type %q with method for %q", t.Encoded, t.Method) + if t.ctx != "" { + out += " at " + t.ctx + } + return out +} + +// Resumable returns 'true' for TypeErrors +func (t TypeError) Resumable() bool { return true } + +func (t TypeError) withContext(ctx string) error { t.ctx = addCtx(t.ctx, ctx); return t } + +// returns either InvalidPrefixError or +// TypeError depending on whether or not +// the prefix is recognized +func badPrefix(want Type, lead byte) error { + t := sizes[lead].typ + if t == InvalidType { + return InvalidPrefixError(lead) + } + return TypeError{Method: want, Encoded: t} +} + +// InvalidPrefixError is returned when a bad encoding +// uses a prefix that is not recognized in the MessagePack standard. +// This kind of error is unrecoverable. +type InvalidPrefixError byte + +// Error implements the error interface +func (i InvalidPrefixError) Error() string { + return fmt.Sprintf("msgp: unrecognized type prefix 0x%x", byte(i)) +} + +// Resumable returns 'false' for InvalidPrefixErrors +func (i InvalidPrefixError) Resumable() bool { return false } + +// ErrUnsupportedType is returned +// when a bad argument is supplied +// to a function that takes `interface{}`. +type ErrUnsupportedType struct { + T reflect.Type + + ctx string +} + +// Error implements error +func (e *ErrUnsupportedType) Error() string { + out := fmt.Sprintf("msgp: type %q not supported", e.T) + if e.ctx != "" { + out += " at " + e.ctx + } + return out +} + +// Resumable returns 'true' for ErrUnsupportedType +func (e *ErrUnsupportedType) Resumable() bool { return true } + +func (e *ErrUnsupportedType) withContext(ctx string) error { + o := *e + o.ctx = addCtx(o.ctx, ctx) + return &o +} diff --git a/vendor/github.com/tinylib/msgp/msgp/extension.go b/vendor/github.com/tinylib/msgp/msgp/extension.go new file mode 100644 index 00000000..b2e11085 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/extension.go @@ -0,0 +1,549 @@ +package msgp + +import ( + "fmt" + "math" +) + +const ( + // Complex64Extension is the extension number used for complex64 + Complex64Extension = 3 + + // Complex128Extension is the extension number used for complex128 + Complex128Extension = 4 + + // TimeExtension is the extension number used for time.Time + TimeExtension = 5 +) + +// our extensions live here +var extensionReg = make(map[int8]func() Extension) + +// RegisterExtension registers extensions so that they +// can be initialized and returned by methods that +// decode `interface{}` values. This should only +// be called during initialization. f() should return +// a newly-initialized zero value of the extension. Keep in +// mind that extensions 3, 4, and 5 are reserved for +// complex64, complex128, and time.Time, respectively, +// and that MessagePack reserves extension types from -127 to -1. +// +// For example, if you wanted to register a user-defined struct: +// +// msgp.RegisterExtension(10, func() msgp.Extension { &MyExtension{} }) +// +// RegisterExtension will panic if you call it multiple times +// with the same 'typ' argument, or if you use a reserved +// type (3, 4, or 5). +func RegisterExtension(typ int8, f func() Extension) { + switch typ { + case Complex64Extension, Complex128Extension, TimeExtension: + panic(fmt.Sprint("msgp: forbidden extension type:", typ)) + } + if _, ok := extensionReg[typ]; ok { + panic(fmt.Sprint("msgp: RegisterExtension() called with typ", typ, "more than once")) + } + extensionReg[typ] = f +} + +// ExtensionTypeError is an error type returned +// when there is a mis-match between an extension type +// and the type encoded on the wire +type ExtensionTypeError struct { + Got int8 + Want int8 +} + +// Error implements the error interface +func (e ExtensionTypeError) Error() string { + return fmt.Sprintf("msgp: error decoding extension: wanted type %d; got type %d", e.Want, e.Got) +} + +// Resumable returns 'true' for ExtensionTypeErrors +func (e ExtensionTypeError) Resumable() bool { return true } + +func errExt(got int8, wanted int8) error { + return ExtensionTypeError{Got: got, Want: wanted} +} + +// Extension is the interface fulfilled +// by types that want to define their +// own binary encoding. +type Extension interface { + // ExtensionType should return + // a int8 that identifies the concrete + // type of the extension. (Types <0 are + // officially reserved by the MessagePack + // specifications.) + ExtensionType() int8 + + // Len should return the length + // of the data to be encoded + Len() int + + // MarshalBinaryTo should copy + // the data into the supplied slice, + // assuming that the slice has length Len() + MarshalBinaryTo([]byte) error + + UnmarshalBinary([]byte) error +} + +// RawExtension implements the Extension interface +type RawExtension struct { + Data []byte + Type int8 +} + +// ExtensionType implements Extension.ExtensionType, and returns r.Type +func (r *RawExtension) ExtensionType() int8 { return r.Type } + +// Len implements Extension.Len, and returns len(r.Data) +func (r *RawExtension) Len() int { return len(r.Data) } + +// MarshalBinaryTo implements Extension.MarshalBinaryTo, +// and returns a copy of r.Data +func (r *RawExtension) MarshalBinaryTo(d []byte) error { + copy(d, r.Data) + return nil +} + +// UnmarshalBinary implements Extension.UnmarshalBinary, +// and sets r.Data to the contents of the provided slice +func (r *RawExtension) UnmarshalBinary(b []byte) error { + if cap(r.Data) >= len(b) { + r.Data = r.Data[0:len(b)] + } else { + r.Data = make([]byte, len(b)) + } + copy(r.Data, b) + return nil +} + +// WriteExtension writes an extension type to the writer +func (mw *Writer) WriteExtension(e Extension) error { + l := e.Len() + var err error + switch l { + case 0: + o, err := mw.require(3) + if err != nil { + return err + } + mw.buf[o] = mext8 + mw.buf[o+1] = 0 + mw.buf[o+2] = byte(e.ExtensionType()) + case 1: + o, err := mw.require(2) + if err != nil { + return err + } + mw.buf[o] = mfixext1 + mw.buf[o+1] = byte(e.ExtensionType()) + case 2: + o, err := mw.require(2) + if err != nil { + return err + } + mw.buf[o] = mfixext2 + mw.buf[o+1] = byte(e.ExtensionType()) + case 4: + o, err := mw.require(2) + if err != nil { + return err + } + mw.buf[o] = mfixext4 + mw.buf[o+1] = byte(e.ExtensionType()) + case 8: + o, err := mw.require(2) + if err != nil { + return err + } + mw.buf[o] = mfixext8 + mw.buf[o+1] = byte(e.ExtensionType()) + case 16: + o, err := mw.require(2) + if err != nil { + return err + } + mw.buf[o] = mfixext16 + mw.buf[o+1] = byte(e.ExtensionType()) + default: + switch { + case l < math.MaxUint8: + o, err := mw.require(3) + if err != nil { + return err + } + mw.buf[o] = mext8 + mw.buf[o+1] = byte(uint8(l)) + mw.buf[o+2] = byte(e.ExtensionType()) + case l < math.MaxUint16: + o, err := mw.require(4) + if err != nil { + return err + } + mw.buf[o] = mext16 + big.PutUint16(mw.buf[o+1:], uint16(l)) + mw.buf[o+3] = byte(e.ExtensionType()) + default: + o, err := mw.require(6) + if err != nil { + return err + } + mw.buf[o] = mext32 + big.PutUint32(mw.buf[o+1:], uint32(l)) + mw.buf[o+5] = byte(e.ExtensionType()) + } + } + // we can only write directly to the + // buffer if we're sure that it + // fits the object + if l <= mw.bufsize() { + o, err := mw.require(l) + if err != nil { + return err + } + return e.MarshalBinaryTo(mw.buf[o:]) + } + // here we create a new buffer + // just large enough for the body + // and save it as the write buffer + err = mw.flush() + if err != nil { + return err + } + buf := make([]byte, l) + err = e.MarshalBinaryTo(buf) + if err != nil { + return err + } + mw.buf = buf + mw.wloc = l + return nil +} + +// peek at the extension type, assuming the next +// kind to be read is Extension +func (m *Reader) peekExtensionType() (int8, error) { + p, err := m.R.Peek(2) + if err != nil { + return 0, err + } + spec := sizes[p[0]] + if spec.typ != ExtensionType { + return 0, badPrefix(ExtensionType, p[0]) + } + if spec.extra == constsize { + return int8(p[1]), nil + } + size := spec.size + p, err = m.R.Peek(int(size)) + if err != nil { + return 0, err + } + return int8(p[size-1]), nil +} + +// peekExtension peeks at the extension encoding type +// (must guarantee at least 1 byte in 'b') +func peekExtension(b []byte) (int8, error) { + spec := sizes[b[0]] + size := spec.size + if spec.typ != ExtensionType { + return 0, badPrefix(ExtensionType, b[0]) + } + if len(b) < int(size) { + return 0, ErrShortBytes + } + // for fixed extensions, + // the type information is in + // the second byte + if spec.extra == constsize { + return int8(b[1]), nil + } + // otherwise, it's in the last + // part of the prefix + return int8(b[size-1]), nil +} + +// ReadExtension reads the next object from the reader +// as an extension. ReadExtension will fail if the next +// object in the stream is not an extension, or if +// e.Type() is not the same as the wire type. +func (m *Reader) ReadExtension(e Extension) (err error) { + var p []byte + p, err = m.R.Peek(2) + if err != nil { + return + } + lead := p[0] + var read int + var off int + switch lead { + case mfixext1: + if int8(p[1]) != e.ExtensionType() { + err = errExt(int8(p[1]), e.ExtensionType()) + return + } + p, err = m.R.Peek(3) + if err != nil { + return + } + err = e.UnmarshalBinary(p[2:]) + if err == nil { + _, err = m.R.Skip(3) + } + return + + case mfixext2: + if int8(p[1]) != e.ExtensionType() { + err = errExt(int8(p[1]), e.ExtensionType()) + return + } + p, err = m.R.Peek(4) + if err != nil { + return + } + err = e.UnmarshalBinary(p[2:]) + if err == nil { + _, err = m.R.Skip(4) + } + return + + case mfixext4: + if int8(p[1]) != e.ExtensionType() { + err = errExt(int8(p[1]), e.ExtensionType()) + return + } + p, err = m.R.Peek(6) + if err != nil { + return + } + err = e.UnmarshalBinary(p[2:]) + if err == nil { + _, err = m.R.Skip(6) + } + return + + case mfixext8: + if int8(p[1]) != e.ExtensionType() { + err = errExt(int8(p[1]), e.ExtensionType()) + return + } + p, err = m.R.Peek(10) + if err != nil { + return + } + err = e.UnmarshalBinary(p[2:]) + if err == nil { + _, err = m.R.Skip(10) + } + return + + case mfixext16: + if int8(p[1]) != e.ExtensionType() { + err = errExt(int8(p[1]), e.ExtensionType()) + return + } + p, err = m.R.Peek(18) + if err != nil { + return + } + err = e.UnmarshalBinary(p[2:]) + if err == nil { + _, err = m.R.Skip(18) + } + return + + case mext8: + p, err = m.R.Peek(3) + if err != nil { + return + } + if int8(p[2]) != e.ExtensionType() { + err = errExt(int8(p[2]), e.ExtensionType()) + return + } + read = int(uint8(p[1])) + off = 3 + + case mext16: + p, err = m.R.Peek(4) + if err != nil { + return + } + if int8(p[3]) != e.ExtensionType() { + err = errExt(int8(p[3]), e.ExtensionType()) + return + } + read = int(big.Uint16(p[1:])) + off = 4 + + case mext32: + p, err = m.R.Peek(6) + if err != nil { + return + } + if int8(p[5]) != e.ExtensionType() { + err = errExt(int8(p[5]), e.ExtensionType()) + return + } + read = int(big.Uint32(p[1:])) + off = 6 + + default: + err = badPrefix(ExtensionType, lead) + return + } + + p, err = m.R.Peek(read + off) + if err != nil { + return + } + err = e.UnmarshalBinary(p[off:]) + if err == nil { + _, err = m.R.Skip(read + off) + } + return +} + +// AppendExtension appends a MessagePack extension to the provided slice +func AppendExtension(b []byte, e Extension) ([]byte, error) { + l := e.Len() + var o []byte + var n int + switch l { + case 0: + o, n = ensure(b, 3) + o[n] = mext8 + o[n+1] = 0 + o[n+2] = byte(e.ExtensionType()) + return o[:n+3], nil + case 1: + o, n = ensure(b, 3) + o[n] = mfixext1 + o[n+1] = byte(e.ExtensionType()) + n += 2 + case 2: + o, n = ensure(b, 4) + o[n] = mfixext2 + o[n+1] = byte(e.ExtensionType()) + n += 2 + case 4: + o, n = ensure(b, 6) + o[n] = mfixext4 + o[n+1] = byte(e.ExtensionType()) + n += 2 + case 8: + o, n = ensure(b, 10) + o[n] = mfixext8 + o[n+1] = byte(e.ExtensionType()) + n += 2 + case 16: + o, n = ensure(b, 18) + o[n] = mfixext16 + o[n+1] = byte(e.ExtensionType()) + n += 2 + default: + switch { + case l < math.MaxUint8: + o, n = ensure(b, l+3) + o[n] = mext8 + o[n+1] = byte(uint8(l)) + o[n+2] = byte(e.ExtensionType()) + n += 3 + case l < math.MaxUint16: + o, n = ensure(b, l+4) + o[n] = mext16 + big.PutUint16(o[n+1:], uint16(l)) + o[n+3] = byte(e.ExtensionType()) + n += 4 + default: + o, n = ensure(b, l+6) + o[n] = mext32 + big.PutUint32(o[n+1:], uint32(l)) + o[n+5] = byte(e.ExtensionType()) + n += 6 + } + } + return o, e.MarshalBinaryTo(o[n:]) +} + +// ReadExtensionBytes reads an extension from 'b' into 'e' +// and returns any remaining bytes. +// Possible errors: +// - ErrShortBytes ('b' not long enough) +// - ExtensionTypeError{} (wire type not the same as e.Type()) +// - TypeError{} (next object not an extension) +// - InvalidPrefixError +// - An umarshal error returned from e.UnmarshalBinary +func ReadExtensionBytes(b []byte, e Extension) ([]byte, error) { + l := len(b) + if l < 3 { + return b, ErrShortBytes + } + lead := b[0] + var ( + sz int // size of 'data' + off int // offset of 'data' + typ int8 + ) + switch lead { + case mfixext1: + typ = int8(b[1]) + sz = 1 + off = 2 + case mfixext2: + typ = int8(b[1]) + sz = 2 + off = 2 + case mfixext4: + typ = int8(b[1]) + sz = 4 + off = 2 + case mfixext8: + typ = int8(b[1]) + sz = 8 + off = 2 + case mfixext16: + typ = int8(b[1]) + sz = 16 + off = 2 + case mext8: + sz = int(uint8(b[1])) + typ = int8(b[2]) + off = 3 + if sz == 0 { + return b[3:], e.UnmarshalBinary(b[3:3]) + } + case mext16: + if l < 4 { + return b, ErrShortBytes + } + sz = int(big.Uint16(b[1:])) + typ = int8(b[3]) + off = 4 + case mext32: + if l < 6 { + return b, ErrShortBytes + } + sz = int(big.Uint32(b[1:])) + typ = int8(b[5]) + off = 6 + default: + return b, badPrefix(ExtensionType, lead) + } + + if typ != e.ExtensionType() { + return b, errExt(typ, e.ExtensionType()) + } + + // the data of the extension starts + // at 'off' and is 'sz' bytes long + if len(b[off:]) < sz { + return b, ErrShortBytes + } + tot := off + sz + return b[tot:], e.UnmarshalBinary(b[off:tot]) +} diff --git a/vendor/github.com/tinylib/msgp/msgp/file.go b/vendor/github.com/tinylib/msgp/msgp/file.go new file mode 100644 index 00000000..8e7370eb --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/file.go @@ -0,0 +1,92 @@ +// +build linux darwin dragonfly freebsd netbsd openbsd +// +build !appengine + +package msgp + +import ( + "os" + "syscall" +) + +// ReadFile reads a file into 'dst' using +// a read-only memory mapping. Consequently, +// the file must be mmap-able, and the +// Unmarshaler should never write to +// the source memory. (Methods generated +// by the msgp tool obey that constraint, but +// user-defined implementations may not.) +// +// Reading and writing through file mappings +// is only efficient for large files; small +// files are best read and written using +// the ordinary streaming interfaces. +// +func ReadFile(dst Unmarshaler, file *os.File) error { + stat, err := file.Stat() + if err != nil { + return err + } + data, err := syscall.Mmap(int(file.Fd()), 0, int(stat.Size()), syscall.PROT_READ, syscall.MAP_SHARED) + if err != nil { + return err + } + adviseRead(data) + _, err = dst.UnmarshalMsg(data) + uerr := syscall.Munmap(data) + if err == nil { + err = uerr + } + return err +} + +// MarshalSizer is the combination +// of the Marshaler and Sizer +// interfaces. +type MarshalSizer interface { + Marshaler + Sizer +} + +// WriteFile writes a file from 'src' using +// memory mapping. It overwrites the entire +// contents of the previous file. +// The mapping size is calculated +// using the `Msgsize()` method +// of 'src', so it must produce a result +// equal to or greater than the actual encoded +// size of the object. Otherwise, +// a fault (SIGBUS) will occur. +// +// Reading and writing through file mappings +// is only efficient for large files; small +// files are best read and written using +// the ordinary streaming interfaces. +// +// NOTE: The performance of this call +// is highly OS- and filesystem-dependent. +// Users should take care to test that this +// performs as expected in a production environment. +// (Linux users should run a kernel and filesystem +// that support fallocate(2) for the best results.) +func WriteFile(src MarshalSizer, file *os.File) error { + sz := src.Msgsize() + err := fallocate(file, int64(sz)) + if err != nil { + return err + } + data, err := syscall.Mmap(int(file.Fd()), 0, sz, syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_SHARED) + if err != nil { + return err + } + adviseWrite(data) + chunk := data[:0] + chunk, err = src.MarshalMsg(chunk) + if err != nil { + return err + } + uerr := syscall.Munmap(data) + if uerr != nil { + return uerr + } + return file.Truncate(int64(len(chunk))) +} diff --git a/vendor/github.com/tinylib/msgp/msgp/file_port.go b/vendor/github.com/tinylib/msgp/msgp/file_port.go new file mode 100644 index 00000000..6e654dbd --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/file_port.go @@ -0,0 +1,47 @@ +// +build windows appengine + +package msgp + +import ( + "io/ioutil" + "os" +) + +// MarshalSizer is the combination +// of the Marshaler and Sizer +// interfaces. +type MarshalSizer interface { + Marshaler + Sizer +} + +func ReadFile(dst Unmarshaler, file *os.File) error { + if u, ok := dst.(Decodable); ok { + return u.DecodeMsg(NewReader(file)) + } + + data, err := ioutil.ReadAll(file) + if err != nil { + return err + } + _, err = dst.UnmarshalMsg(data) + return err +} + +func WriteFile(src MarshalSizer, file *os.File) error { + if e, ok := src.(Encodable); ok { + w := NewWriter(file) + err := e.EncodeMsg(w) + if err == nil { + err = w.Flush() + } + return err + } + + raw, err := src.MarshalMsg(nil) + if err != nil { + return err + } + _, err = file.Write(raw) + return err +} diff --git a/vendor/github.com/tinylib/msgp/msgp/integers.go b/vendor/github.com/tinylib/msgp/msgp/integers.go new file mode 100644 index 00000000..f817d775 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/integers.go @@ -0,0 +1,174 @@ +package msgp + +/* ---------------------------------- + integer encoding utilities + (inline-able) + + TODO(tinylib): there are faster, + albeit non-portable solutions + to the code below. implement + byteswap? + ---------------------------------- */ + +func putMint64(b []byte, i int64) { + b[0] = mint64 + b[1] = byte(i >> 56) + b[2] = byte(i >> 48) + b[3] = byte(i >> 40) + b[4] = byte(i >> 32) + b[5] = byte(i >> 24) + b[6] = byte(i >> 16) + b[7] = byte(i >> 8) + b[8] = byte(i) +} + +func getMint64(b []byte) int64 { + return (int64(b[1]) << 56) | (int64(b[2]) << 48) | + (int64(b[3]) << 40) | (int64(b[4]) << 32) | + (int64(b[5]) << 24) | (int64(b[6]) << 16) | + (int64(b[7]) << 8) | (int64(b[8])) +} + +func putMint32(b []byte, i int32) { + b[0] = mint32 + b[1] = byte(i >> 24) + b[2] = byte(i >> 16) + b[3] = byte(i >> 8) + b[4] = byte(i) +} + +func getMint32(b []byte) int32 { + return (int32(b[1]) << 24) | (int32(b[2]) << 16) | (int32(b[3]) << 8) | (int32(b[4])) +} + +func putMint16(b []byte, i int16) { + b[0] = mint16 + b[1] = byte(i >> 8) + b[2] = byte(i) +} + +func getMint16(b []byte) (i int16) { + return (int16(b[1]) << 8) | int16(b[2]) +} + +func putMint8(b []byte, i int8) { + b[0] = mint8 + b[1] = byte(i) +} + +func getMint8(b []byte) (i int8) { + return int8(b[1]) +} + +func putMuint64(b []byte, u uint64) { + b[0] = muint64 + b[1] = byte(u >> 56) + b[2] = byte(u >> 48) + b[3] = byte(u >> 40) + b[4] = byte(u >> 32) + b[5] = byte(u >> 24) + b[6] = byte(u >> 16) + b[7] = byte(u >> 8) + b[8] = byte(u) +} + +func getMuint64(b []byte) uint64 { + return (uint64(b[1]) << 56) | (uint64(b[2]) << 48) | + (uint64(b[3]) << 40) | (uint64(b[4]) << 32) | + (uint64(b[5]) << 24) | (uint64(b[6]) << 16) | + (uint64(b[7]) << 8) | (uint64(b[8])) +} + +func putMuint32(b []byte, u uint32) { + b[0] = muint32 + b[1] = byte(u >> 24) + b[2] = byte(u >> 16) + b[3] = byte(u >> 8) + b[4] = byte(u) +} + +func getMuint32(b []byte) uint32 { + return (uint32(b[1]) << 24) | (uint32(b[2]) << 16) | (uint32(b[3]) << 8) | (uint32(b[4])) +} + +func putMuint16(b []byte, u uint16) { + b[0] = muint16 + b[1] = byte(u >> 8) + b[2] = byte(u) +} + +func getMuint16(b []byte) uint16 { + return (uint16(b[1]) << 8) | uint16(b[2]) +} + +func putMuint8(b []byte, u uint8) { + b[0] = muint8 + b[1] = byte(u) +} + +func getMuint8(b []byte) uint8 { + return uint8(b[1]) +} + +func getUnix(b []byte) (sec int64, nsec int32) { + sec = (int64(b[0]) << 56) | (int64(b[1]) << 48) | + (int64(b[2]) << 40) | (int64(b[3]) << 32) | + (int64(b[4]) << 24) | (int64(b[5]) << 16) | + (int64(b[6]) << 8) | (int64(b[7])) + + nsec = (int32(b[8]) << 24) | (int32(b[9]) << 16) | (int32(b[10]) << 8) | (int32(b[11])) + return +} + +func putUnix(b []byte, sec int64, nsec int32) { + b[0] = byte(sec >> 56) + b[1] = byte(sec >> 48) + b[2] = byte(sec >> 40) + b[3] = byte(sec >> 32) + b[4] = byte(sec >> 24) + b[5] = byte(sec >> 16) + b[6] = byte(sec >> 8) + b[7] = byte(sec) + b[8] = byte(nsec >> 24) + b[9] = byte(nsec >> 16) + b[10] = byte(nsec >> 8) + b[11] = byte(nsec) +} + +/* ----------------------------- + prefix utilities + ----------------------------- */ + +// write prefix and uint8 +func prefixu8(b []byte, pre byte, sz uint8) { + b[0] = pre + b[1] = byte(sz) +} + +// write prefix and big-endian uint16 +func prefixu16(b []byte, pre byte, sz uint16) { + b[0] = pre + b[1] = byte(sz >> 8) + b[2] = byte(sz) +} + +// write prefix and big-endian uint32 +func prefixu32(b []byte, pre byte, sz uint32) { + b[0] = pre + b[1] = byte(sz >> 24) + b[2] = byte(sz >> 16) + b[3] = byte(sz >> 8) + b[4] = byte(sz) +} + +func prefixu64(b []byte, pre byte, sz uint64) { + b[0] = pre + b[1] = byte(sz >> 56) + b[2] = byte(sz >> 48) + b[3] = byte(sz >> 40) + b[4] = byte(sz >> 32) + b[5] = byte(sz >> 24) + b[6] = byte(sz >> 16) + b[7] = byte(sz >> 8) + b[8] = byte(sz) +} diff --git a/vendor/github.com/tinylib/msgp/msgp/json.go b/vendor/github.com/tinylib/msgp/msgp/json.go new file mode 100644 index 00000000..77601e52 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/json.go @@ -0,0 +1,568 @@ +package msgp + +import ( + "bufio" + "encoding/base64" + "encoding/json" + "io" + "strconv" + "unicode/utf8" +) + +var ( + null = []byte("null") + hex = []byte("0123456789abcdef") +) + +var defuns [_maxtype]func(jsWriter, *Reader) (int, error) + +// note: there is an initialization loop if +// this isn't set up during init() +func init() { + // since none of these functions are inline-able, + // there is not much of a penalty to the indirect + // call. however, this is best expressed as a jump-table... + defuns = [_maxtype]func(jsWriter, *Reader) (int, error){ + StrType: rwString, + BinType: rwBytes, + MapType: rwMap, + ArrayType: rwArray, + Float64Type: rwFloat64, + Float32Type: rwFloat32, + BoolType: rwBool, + IntType: rwInt, + UintType: rwUint, + NilType: rwNil, + ExtensionType: rwExtension, + Complex64Type: rwExtension, + Complex128Type: rwExtension, + TimeType: rwTime, + } +} + +// this is the interface +// used to write json +type jsWriter interface { + io.Writer + io.ByteWriter + WriteString(string) (int, error) +} + +// CopyToJSON reads MessagePack from 'src' and copies it +// as JSON to 'dst' until EOF. +func CopyToJSON(dst io.Writer, src io.Reader) (n int64, err error) { + r := NewReader(src) + n, err = r.WriteToJSON(dst) + freeR(r) + return +} + +// WriteToJSON translates MessagePack from 'r' and writes it as +// JSON to 'w' until the underlying reader returns io.EOF. It returns +// the number of bytes written, and an error if it stopped before EOF. +func (r *Reader) WriteToJSON(w io.Writer) (n int64, err error) { + var j jsWriter + var bf *bufio.Writer + if jsw, ok := w.(jsWriter); ok { + j = jsw + } else { + bf = bufio.NewWriter(w) + j = bf + } + var nn int + for err == nil { + nn, err = rwNext(j, r) + n += int64(nn) + } + if err != io.EOF { + if bf != nil { + bf.Flush() + } + return + } + err = nil + if bf != nil { + err = bf.Flush() + } + return +} + +func rwNext(w jsWriter, src *Reader) (int, error) { + t, err := src.NextType() + if err != nil { + return 0, err + } + return defuns[t](w, src) +} + +func rwMap(dst jsWriter, src *Reader) (n int, err error) { + var comma bool + var sz uint32 + var field []byte + + sz, err = src.ReadMapHeader() + if err != nil { + return + } + + if sz == 0 { + return dst.WriteString("{}") + } + + err = dst.WriteByte('{') + if err != nil { + return + } + n++ + var nn int + for i := uint32(0); i < sz; i++ { + if comma { + err = dst.WriteByte(',') + if err != nil { + return + } + n++ + } + + field, err = src.ReadMapKeyPtr() + if err != nil { + return + } + nn, err = rwquoted(dst, field) + n += nn + if err != nil { + return + } + + err = dst.WriteByte(':') + if err != nil { + return + } + n++ + nn, err = rwNext(dst, src) + n += nn + if err != nil { + return + } + if !comma { + comma = true + } + } + + err = dst.WriteByte('}') + if err != nil { + return + } + n++ + return +} + +func rwArray(dst jsWriter, src *Reader) (n int, err error) { + err = dst.WriteByte('[') + if err != nil { + return + } + var sz uint32 + var nn int + sz, err = src.ReadArrayHeader() + if err != nil { + return + } + comma := false + for i := uint32(0); i < sz; i++ { + if comma { + err = dst.WriteByte(',') + if err != nil { + return + } + n++ + } + nn, err = rwNext(dst, src) + n += nn + if err != nil { + return + } + comma = true + } + + err = dst.WriteByte(']') + if err != nil { + return + } + n++ + return +} + +func rwNil(dst jsWriter, src *Reader) (int, error) { + err := src.ReadNil() + if err != nil { + return 0, err + } + return dst.Write(null) +} + +func rwFloat32(dst jsWriter, src *Reader) (int, error) { + f, err := src.ReadFloat32() + if err != nil { + return 0, err + } + src.scratch = strconv.AppendFloat(src.scratch[:0], float64(f), 'f', -1, 64) + return dst.Write(src.scratch) +} + +func rwFloat64(dst jsWriter, src *Reader) (int, error) { + f, err := src.ReadFloat64() + if err != nil { + return 0, err + } + src.scratch = strconv.AppendFloat(src.scratch[:0], f, 'f', -1, 32) + return dst.Write(src.scratch) +} + +func rwInt(dst jsWriter, src *Reader) (int, error) { + i, err := src.ReadInt64() + if err != nil { + return 0, err + } + src.scratch = strconv.AppendInt(src.scratch[:0], i, 10) + return dst.Write(src.scratch) +} + +func rwUint(dst jsWriter, src *Reader) (int, error) { + u, err := src.ReadUint64() + if err != nil { + return 0, err + } + src.scratch = strconv.AppendUint(src.scratch[:0], u, 10) + return dst.Write(src.scratch) +} + +func rwBool(dst jsWriter, src *Reader) (int, error) { + b, err := src.ReadBool() + if err != nil { + return 0, err + } + if b { + return dst.WriteString("true") + } + return dst.WriteString("false") +} + +func rwTime(dst jsWriter, src *Reader) (int, error) { + t, err := src.ReadTime() + if err != nil { + return 0, err + } + bts, err := t.MarshalJSON() + if err != nil { + return 0, err + } + return dst.Write(bts) +} + +func rwExtension(dst jsWriter, src *Reader) (n int, err error) { + et, err := src.peekExtensionType() + if err != nil { + return 0, err + } + + // registered extensions can override + // the JSON encoding + if j, ok := extensionReg[et]; ok { + var bts []byte + e := j() + err = src.ReadExtension(e) + if err != nil { + return + } + bts, err = json.Marshal(e) + if err != nil { + return + } + return dst.Write(bts) + } + + e := RawExtension{} + e.Type = et + err = src.ReadExtension(&e) + if err != nil { + return + } + + var nn int + err = dst.WriteByte('{') + if err != nil { + return + } + n++ + + nn, err = dst.WriteString(`"type:"`) + n += nn + if err != nil { + return + } + + src.scratch = strconv.AppendInt(src.scratch[0:0], int64(e.Type), 10) + nn, err = dst.Write(src.scratch) + n += nn + if err != nil { + return + } + + nn, err = dst.WriteString(`,"data":"`) + n += nn + if err != nil { + return + } + + enc := base64.NewEncoder(base64.StdEncoding, dst) + + nn, err = enc.Write(e.Data) + n += nn + if err != nil { + return + } + err = enc.Close() + if err != nil { + return + } + nn, err = dst.WriteString(`"}`) + n += nn + return +} + +func rwString(dst jsWriter, src *Reader) (n int, err error) { + var p []byte + p, err = src.R.Peek(1) + if err != nil { + return + } + lead := p[0] + var read int + + if isfixstr(lead) { + read = int(rfixstr(lead)) + src.R.Skip(1) + goto write + } + + switch lead { + case mstr8: + p, err = src.R.Next(2) + if err != nil { + return + } + read = int(uint8(p[1])) + case mstr16: + p, err = src.R.Next(3) + if err != nil { + return + } + read = int(big.Uint16(p[1:])) + case mstr32: + p, err = src.R.Next(5) + if err != nil { + return + } + read = int(big.Uint32(p[1:])) + default: + err = badPrefix(StrType, lead) + return + } +write: + p, err = src.R.Next(read) + if err != nil { + return + } + n, err = rwquoted(dst, p) + return +} + +func rwBytes(dst jsWriter, src *Reader) (n int, err error) { + var nn int + err = dst.WriteByte('"') + if err != nil { + return + } + n++ + src.scratch, err = src.ReadBytes(src.scratch[:0]) + if err != nil { + return + } + enc := base64.NewEncoder(base64.StdEncoding, dst) + nn, err = enc.Write(src.scratch) + n += nn + if err != nil { + return + } + err = enc.Close() + if err != nil { + return + } + err = dst.WriteByte('"') + if err != nil { + return + } + n++ + return +} + +// Below (c) The Go Authors, 2009-2014 +// Subject to the BSD-style license found at http://golang.org +// +// see: encoding/json/encode.go:(*encodeState).stringbytes() +func rwquoted(dst jsWriter, s []byte) (n int, err error) { + var nn int + err = dst.WriteByte('"') + if err != nil { + return + } + n++ + start := 0 + for i := 0; i < len(s); { + if b := s[i]; b < utf8.RuneSelf { + if 0x20 <= b && b != '\\' && b != '"' && b != '<' && b != '>' && b != '&' { + i++ + continue + } + if start < i { + nn, err = dst.Write(s[start:i]) + n += nn + if err != nil { + return + } + } + switch b { + case '\\', '"': + err = dst.WriteByte('\\') + if err != nil { + return + } + n++ + err = dst.WriteByte(b) + if err != nil { + return + } + n++ + case '\n': + err = dst.WriteByte('\\') + if err != nil { + return + } + n++ + err = dst.WriteByte('n') + if err != nil { + return + } + n++ + case '\r': + err = dst.WriteByte('\\') + if err != nil { + return + } + n++ + err = dst.WriteByte('r') + if err != nil { + return + } + n++ + case '\t': + err = dst.WriteByte('\\') + if err != nil { + return + } + n++ + err = dst.WriteByte('t') + if err != nil { + return + } + n++ + default: + // This encodes bytes < 0x20 except for \t, \n and \r. + // It also escapes <, >, and & + // because they can lead to security holes when + // user-controlled strings are rendered into JSON + // and served to some browsers. + nn, err = dst.WriteString(`\u00`) + n += nn + if err != nil { + return + } + err = dst.WriteByte(hex[b>>4]) + if err != nil { + return + } + n++ + err = dst.WriteByte(hex[b&0xF]) + if err != nil { + return + } + n++ + } + i++ + start = i + continue + } + c, size := utf8.DecodeRune(s[i:]) + if c == utf8.RuneError && size == 1 { + if start < i { + nn, err = dst.Write(s[start:i]) + n += nn + if err != nil { + return + } + } + nn, err = dst.WriteString(`\ufffd`) + n += nn + if err != nil { + return + } + i += size + start = i + continue + } + // U+2028 is LINE SEPARATOR. + // U+2029 is PARAGRAPH SEPARATOR. + // They are both technically valid characters in JSON strings, + // but don't work in JSONP, which has to be evaluated as JavaScript, + // and can lead to security holes there. It is valid JSON to + // escape them, so we do so unconditionally. + // See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion. + if c == '\u2028' || c == '\u2029' { + if start < i { + nn, err = dst.Write(s[start:i]) + n += nn + if err != nil { + return + } + } + nn, err = dst.WriteString(`\u202`) + n += nn + if err != nil { + return + } + err = dst.WriteByte(hex[c&0xF]) + if err != nil { + return + } + n++ + i += size + start = i + continue + } + i += size + } + if start < len(s) { + nn, err = dst.Write(s[start:]) + n += nn + if err != nil { + return + } + } + err = dst.WriteByte('"') + if err != nil { + return + } + n++ + return +} diff --git a/vendor/github.com/tinylib/msgp/msgp/json_bytes.go b/vendor/github.com/tinylib/msgp/msgp/json_bytes.go new file mode 100644 index 00000000..438caf53 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/json_bytes.go @@ -0,0 +1,363 @@ +package msgp + +import ( + "bufio" + "encoding/base64" + "encoding/json" + "io" + "strconv" + "time" +) + +var unfuns [_maxtype]func(jsWriter, []byte, []byte) ([]byte, []byte, error) + +func init() { + + // NOTE(pmh): this is best expressed as a jump table, + // but gc doesn't do that yet. revisit post-go1.5. + unfuns = [_maxtype]func(jsWriter, []byte, []byte) ([]byte, []byte, error){ + StrType: rwStringBytes, + BinType: rwBytesBytes, + MapType: rwMapBytes, + ArrayType: rwArrayBytes, + Float64Type: rwFloat64Bytes, + Float32Type: rwFloat32Bytes, + BoolType: rwBoolBytes, + IntType: rwIntBytes, + UintType: rwUintBytes, + NilType: rwNullBytes, + ExtensionType: rwExtensionBytes, + Complex64Type: rwExtensionBytes, + Complex128Type: rwExtensionBytes, + TimeType: rwTimeBytes, + } +} + +// UnmarshalAsJSON takes raw messagepack and writes +// it as JSON to 'w'. If an error is returned, the +// bytes not translated will also be returned. If +// no errors are encountered, the length of the returned +// slice will be zero. +func UnmarshalAsJSON(w io.Writer, msg []byte) ([]byte, error) { + var ( + scratch []byte + cast bool + dst jsWriter + err error + ) + if jsw, ok := w.(jsWriter); ok { + dst = jsw + cast = true + } else { + dst = bufio.NewWriterSize(w, 512) + } + for len(msg) > 0 && err == nil { + msg, scratch, err = writeNext(dst, msg, scratch) + } + if !cast && err == nil { + err = dst.(*bufio.Writer).Flush() + } + return msg, err +} + +func writeNext(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + if len(msg) < 1 { + return msg, scratch, ErrShortBytes + } + t := getType(msg[0]) + if t == InvalidType { + return msg, scratch, InvalidPrefixError(msg[0]) + } + if t == ExtensionType { + et, err := peekExtension(msg) + if err != nil { + return nil, scratch, err + } + if et == TimeExtension { + t = TimeType + } + } + return unfuns[t](w, msg, scratch) +} + +func rwArrayBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + sz, msg, err := ReadArrayHeaderBytes(msg) + if err != nil { + return msg, scratch, err + } + err = w.WriteByte('[') + if err != nil { + return msg, scratch, err + } + for i := uint32(0); i < sz; i++ { + if i != 0 { + err = w.WriteByte(',') + if err != nil { + return msg, scratch, err + } + } + msg, scratch, err = writeNext(w, msg, scratch) + if err != nil { + return msg, scratch, err + } + } + err = w.WriteByte(']') + return msg, scratch, err +} + +func rwMapBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + sz, msg, err := ReadMapHeaderBytes(msg) + if err != nil { + return msg, scratch, err + } + err = w.WriteByte('{') + if err != nil { + return msg, scratch, err + } + for i := uint32(0); i < sz; i++ { + if i != 0 { + err = w.WriteByte(',') + if err != nil { + return msg, scratch, err + } + } + msg, scratch, err = rwMapKeyBytes(w, msg, scratch) + if err != nil { + return msg, scratch, err + } + err = w.WriteByte(':') + if err != nil { + return msg, scratch, err + } + msg, scratch, err = writeNext(w, msg, scratch) + if err != nil { + return msg, scratch, err + } + } + err = w.WriteByte('}') + return msg, scratch, err +} + +func rwMapKeyBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + msg, scratch, err := rwStringBytes(w, msg, scratch) + if err != nil { + if tperr, ok := err.(TypeError); ok && tperr.Encoded == BinType { + return rwBytesBytes(w, msg, scratch) + } + } + return msg, scratch, err +} + +func rwStringBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + str, msg, err := ReadStringZC(msg) + if err != nil { + return msg, scratch, err + } + _, err = rwquoted(w, str) + return msg, scratch, err +} + +func rwBytesBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + bts, msg, err := ReadBytesZC(msg) + if err != nil { + return msg, scratch, err + } + l := base64.StdEncoding.EncodedLen(len(bts)) + if cap(scratch) >= l { + scratch = scratch[0:l] + } else { + scratch = make([]byte, l) + } + base64.StdEncoding.Encode(scratch, bts) + err = w.WriteByte('"') + if err != nil { + return msg, scratch, err + } + _, err = w.Write(scratch) + if err != nil { + return msg, scratch, err + } + err = w.WriteByte('"') + return msg, scratch, err +} + +func rwNullBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + msg, err := ReadNilBytes(msg) + if err != nil { + return msg, scratch, err + } + _, err = w.Write(null) + return msg, scratch, err +} + +func rwBoolBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + b, msg, err := ReadBoolBytes(msg) + if err != nil { + return msg, scratch, err + } + if b { + _, err = w.WriteString("true") + return msg, scratch, err + } + _, err = w.WriteString("false") + return msg, scratch, err +} + +func rwIntBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + i, msg, err := ReadInt64Bytes(msg) + if err != nil { + return msg, scratch, err + } + scratch = strconv.AppendInt(scratch[0:0], i, 10) + _, err = w.Write(scratch) + return msg, scratch, err +} + +func rwUintBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + u, msg, err := ReadUint64Bytes(msg) + if err != nil { + return msg, scratch, err + } + scratch = strconv.AppendUint(scratch[0:0], u, 10) + _, err = w.Write(scratch) + return msg, scratch, err +} + +func rwFloatBytes(w jsWriter, msg []byte, f64 bool, scratch []byte) ([]byte, []byte, error) { + var f float64 + var err error + var sz int + if f64 { + sz = 64 + f, msg, err = ReadFloat64Bytes(msg) + } else { + sz = 32 + var v float32 + v, msg, err = ReadFloat32Bytes(msg) + f = float64(v) + } + if err != nil { + return msg, scratch, err + } + scratch = strconv.AppendFloat(scratch, f, 'f', -1, sz) + _, err = w.Write(scratch) + return msg, scratch, err +} + +func rwFloat32Bytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + var f float32 + var err error + f, msg, err = ReadFloat32Bytes(msg) + if err != nil { + return msg, scratch, err + } + scratch = strconv.AppendFloat(scratch[:0], float64(f), 'f', -1, 32) + _, err = w.Write(scratch) + return msg, scratch, err +} + +func rwFloat64Bytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + var f float64 + var err error + f, msg, err = ReadFloat64Bytes(msg) + if err != nil { + return msg, scratch, err + } + scratch = strconv.AppendFloat(scratch[:0], f, 'f', -1, 64) + _, err = w.Write(scratch) + return msg, scratch, err +} + +func rwTimeBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + var t time.Time + var err error + t, msg, err = ReadTimeBytes(msg) + if err != nil { + return msg, scratch, err + } + bts, err := t.MarshalJSON() + if err != nil { + return msg, scratch, err + } + _, err = w.Write(bts) + return msg, scratch, err +} + +func rwExtensionBytes(w jsWriter, msg []byte, scratch []byte) ([]byte, []byte, error) { + var err error + var et int8 + et, err = peekExtension(msg) + if err != nil { + return msg, scratch, err + } + + // if it's time.Time + if et == TimeExtension { + var tm time.Time + tm, msg, err = ReadTimeBytes(msg) + if err != nil { + return msg, scratch, err + } + bts, err := tm.MarshalJSON() + if err != nil { + return msg, scratch, err + } + _, err = w.Write(bts) + return msg, scratch, err + } + + // if the extension is registered, + // use its canonical JSON form + if f, ok := extensionReg[et]; ok { + e := f() + msg, err = ReadExtensionBytes(msg, e) + if err != nil { + return msg, scratch, err + } + bts, err := json.Marshal(e) + if err != nil { + return msg, scratch, err + } + _, err = w.Write(bts) + return msg, scratch, err + } + + // otherwise, write `{"type": <num>, "data": "<base64data>"}` + r := RawExtension{} + r.Type = et + msg, err = ReadExtensionBytes(msg, &r) + if err != nil { + return msg, scratch, err + } + scratch, err = writeExt(w, r, scratch) + return msg, scratch, err +} + +func writeExt(w jsWriter, r RawExtension, scratch []byte) ([]byte, error) { + _, err := w.WriteString(`{"type":`) + if err != nil { + return scratch, err + } + scratch = strconv.AppendInt(scratch[0:0], int64(r.Type), 10) + _, err = w.Write(scratch) + if err != nil { + return scratch, err + } + _, err = w.WriteString(`,"data":"`) + if err != nil { + return scratch, err + } + l := base64.StdEncoding.EncodedLen(len(r.Data)) + if cap(scratch) >= l { + scratch = scratch[0:l] + } else { + scratch = make([]byte, l) + } + base64.StdEncoding.Encode(scratch, r.Data) + _, err = w.Write(scratch) + if err != nil { + return scratch, err + } + _, err = w.WriteString(`"}`) + return scratch, err +} diff --git a/vendor/github.com/tinylib/msgp/msgp/number.go b/vendor/github.com/tinylib/msgp/msgp/number.go new file mode 100644 index 00000000..ad07ef99 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/number.go @@ -0,0 +1,267 @@ +package msgp + +import ( + "math" + "strconv" +) + +// The portable parts of the Number implementation + +// Number can be +// an int64, uint64, float32, +// or float64 internally. +// It can decode itself +// from any of the native +// messagepack number types. +// The zero-value of Number +// is Int(0). Using the equality +// operator with Number compares +// both the type and the value +// of the number. +type Number struct { + // internally, this + // is just a tagged union. + // the raw bits of the number + // are stored the same way regardless. + bits uint64 + typ Type +} + +// AsInt sets the number to an int64. +func (n *Number) AsInt(i int64) { + + // we always store int(0) + // as {0, InvalidType} in + // order to preserve + // the behavior of the == operator + if i == 0 { + n.typ = InvalidType + n.bits = 0 + return + } + + n.typ = IntType + n.bits = uint64(i) +} + +// AsUint sets the number to a uint64. +func (n *Number) AsUint(u uint64) { + n.typ = UintType + n.bits = u +} + +// AsFloat32 sets the value of the number +// to a float32. +func (n *Number) AsFloat32(f float32) { + n.typ = Float32Type + n.bits = uint64(math.Float32bits(f)) +} + +// AsFloat64 sets the value of the +// number to a float64. +func (n *Number) AsFloat64(f float64) { + n.typ = Float64Type + n.bits = math.Float64bits(f) +} + +// Int casts the number as an int64, and +// returns whether or not that was the +// underlying type. +func (n *Number) Int() (int64, bool) { + return int64(n.bits), n.typ == IntType || n.typ == InvalidType +} + +// Uint casts the number as a uint64, and returns +// whether or not that was the underlying type. +func (n *Number) Uint() (uint64, bool) { + return n.bits, n.typ == UintType +} + +// Float casts the number to a float64, and +// returns whether or not that was the underlying +// type (either a float64 or a float32). +func (n *Number) Float() (float64, bool) { + switch n.typ { + case Float32Type: + return float64(math.Float32frombits(uint32(n.bits))), true + case Float64Type: + return math.Float64frombits(n.bits), true + default: + return 0.0, false + } +} + +// Type will return one of: +// Float64Type, Float32Type, UintType, or IntType. +func (n *Number) Type() Type { + if n.typ == InvalidType { + return IntType + } + return n.typ +} + +// DecodeMsg implements msgp.Decodable +func (n *Number) DecodeMsg(r *Reader) error { + typ, err := r.NextType() + if err != nil { + return err + } + switch typ { + case Float32Type: + f, err := r.ReadFloat32() + if err != nil { + return err + } + n.AsFloat32(f) + return nil + case Float64Type: + f, err := r.ReadFloat64() + if err != nil { + return err + } + n.AsFloat64(f) + return nil + case IntType: + i, err := r.ReadInt64() + if err != nil { + return err + } + n.AsInt(i) + return nil + case UintType: + u, err := r.ReadUint64() + if err != nil { + return err + } + n.AsUint(u) + return nil + default: + return TypeError{Encoded: typ, Method: IntType} + } +} + +// UnmarshalMsg implements msgp.Unmarshaler +func (n *Number) UnmarshalMsg(b []byte) ([]byte, error) { + typ := NextType(b) + switch typ { + case IntType: + i, o, err := ReadInt64Bytes(b) + if err != nil { + return b, err + } + n.AsInt(i) + return o, nil + case UintType: + u, o, err := ReadUint64Bytes(b) + if err != nil { + return b, err + } + n.AsUint(u) + return o, nil + case Float64Type: + f, o, err := ReadFloat64Bytes(b) + if err != nil { + return b, err + } + n.AsFloat64(f) + return o, nil + case Float32Type: + f, o, err := ReadFloat32Bytes(b) + if err != nil { + return b, err + } + n.AsFloat32(f) + return o, nil + default: + return b, TypeError{Method: IntType, Encoded: typ} + } +} + +// MarshalMsg implements msgp.Marshaler +func (n *Number) MarshalMsg(b []byte) ([]byte, error) { + switch n.typ { + case IntType: + return AppendInt64(b, int64(n.bits)), nil + case UintType: + return AppendUint64(b, uint64(n.bits)), nil + case Float64Type: + return AppendFloat64(b, math.Float64frombits(n.bits)), nil + case Float32Type: + return AppendFloat32(b, math.Float32frombits(uint32(n.bits))), nil + default: + return AppendInt64(b, 0), nil + } +} + +// EncodeMsg implements msgp.Encodable +func (n *Number) EncodeMsg(w *Writer) error { + switch n.typ { + case IntType: + return w.WriteInt64(int64(n.bits)) + case UintType: + return w.WriteUint64(n.bits) + case Float64Type: + return w.WriteFloat64(math.Float64frombits(n.bits)) + case Float32Type: + return w.WriteFloat32(math.Float32frombits(uint32(n.bits))) + default: + return w.WriteInt64(0) + } +} + +// Msgsize implements msgp.Sizer +func (n *Number) Msgsize() int { + switch n.typ { + case Float32Type: + return Float32Size + case Float64Type: + return Float64Size + case IntType: + return Int64Size + case UintType: + return Uint64Size + default: + return 1 // fixint(0) + } +} + +// MarshalJSON implements json.Marshaler +func (n *Number) MarshalJSON() ([]byte, error) { + t := n.Type() + if t == InvalidType { + return []byte{'0'}, nil + } + out := make([]byte, 0, 32) + switch t { + case Float32Type, Float64Type: + f, _ := n.Float() + return strconv.AppendFloat(out, f, 'f', -1, 64), nil + case IntType: + i, _ := n.Int() + return strconv.AppendInt(out, i, 10), nil + case UintType: + u, _ := n.Uint() + return strconv.AppendUint(out, u, 10), nil + default: + panic("(*Number).typ is invalid") + } +} + +// String implements fmt.Stringer +func (n *Number) String() string { + switch n.typ { + case InvalidType: + return "0" + case Float32Type, Float64Type: + f, _ := n.Float() + return strconv.FormatFloat(f, 'f', -1, 64) + case IntType: + i, _ := n.Int() + return strconv.FormatInt(i, 10) + case UintType: + u, _ := n.Uint() + return strconv.FormatUint(u, 10) + default: + panic("(*Number).typ is invalid") + } +} diff --git a/vendor/github.com/tinylib/msgp/msgp/purego.go b/vendor/github.com/tinylib/msgp/msgp/purego.go new file mode 100644 index 00000000..c828f7ec --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/purego.go @@ -0,0 +1,15 @@ +// +build purego appengine + +package msgp + +// let's just assume appengine +// uses 64-bit hardware... +const smallint = false + +func UnsafeString(b []byte) string { + return string(b) +} + +func UnsafeBytes(s string) []byte { + return []byte(s) +} diff --git a/vendor/github.com/tinylib/msgp/msgp/read.go b/vendor/github.com/tinylib/msgp/msgp/read.go new file mode 100644 index 00000000..aa668c57 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/read.go @@ -0,0 +1,1358 @@ +package msgp + +import ( + "io" + "math" + "sync" + "time" + + "github.com/philhofer/fwd" +) + +// where we keep old *Readers +var readerPool = sync.Pool{New: func() interface{} { return &Reader{} }} + +// Type is a MessagePack wire type, +// including this package's built-in +// extension types. +type Type byte + +// MessagePack Types +// +// The zero value of Type +// is InvalidType. +const ( + InvalidType Type = iota + + // MessagePack built-in types + + StrType + BinType + MapType + ArrayType + Float64Type + Float32Type + BoolType + IntType + UintType + NilType + ExtensionType + + // pseudo-types provided + // by extensions + + Complex64Type + Complex128Type + TimeType + + _maxtype +) + +// String implements fmt.Stringer +func (t Type) String() string { + switch t { + case StrType: + return "str" + case BinType: + return "bin" + case MapType: + return "map" + case ArrayType: + return "array" + case Float64Type: + return "float64" + case Float32Type: + return "float32" + case BoolType: + return "bool" + case UintType: + return "uint" + case IntType: + return "int" + case ExtensionType: + return "ext" + case NilType: + return "nil" + default: + return "<invalid>" + } +} + +func freeR(m *Reader) { + readerPool.Put(m) +} + +// Unmarshaler is the interface fulfilled +// by objects that know how to unmarshal +// themselves from MessagePack. +// UnmarshalMsg unmarshals the object +// from binary, returing any leftover +// bytes and any errors encountered. +type Unmarshaler interface { + UnmarshalMsg([]byte) ([]byte, error) +} + +// Decodable is the interface fulfilled +// by objects that know how to read +// themselves from a *Reader. +type Decodable interface { + DecodeMsg(*Reader) error +} + +// Decode decodes 'd' from 'r'. +func Decode(r io.Reader, d Decodable) error { + rd := NewReader(r) + err := d.DecodeMsg(rd) + freeR(rd) + return err +} + +// NewReader returns a *Reader that +// reads from the provided reader. The +// reader will be buffered. +func NewReader(r io.Reader) *Reader { + p := readerPool.Get().(*Reader) + if p.R == nil { + p.R = fwd.NewReader(r) + } else { + p.R.Reset(r) + } + return p +} + +// NewReaderSize returns a *Reader with a buffer of the given size. +// (This is vastly preferable to passing the decoder a reader that is already buffered.) +func NewReaderSize(r io.Reader, sz int) *Reader { + return &Reader{R: fwd.NewReaderSize(r, sz)} +} + +// Reader wraps an io.Reader and provides +// methods to read MessagePack-encoded values +// from it. Readers are buffered. +type Reader struct { + // R is the buffered reader + // that the Reader uses + // to decode MessagePack. + // The Reader itself + // is stateless; all the + // buffering is done + // within R. + R *fwd.Reader + scratch []byte +} + +// Read implements `io.Reader` +func (m *Reader) Read(p []byte) (int, error) { + return m.R.Read(p) +} + +// CopyNext reads the next object from m without decoding it and writes it to w. +// It avoids unnecessary copies internally. +func (m *Reader) CopyNext(w io.Writer) (int64, error) { + sz, o, err := getNextSize(m.R) + if err != nil { + return 0, err + } + + var n int64 + // Opportunistic optimization: if we can fit the whole thing in the m.R + // buffer, then just get a pointer to that, and pass it to w.Write, + // avoiding an allocation. + if int(sz) <= m.R.BufferSize() { + var nn int + var buf []byte + buf, err = m.R.Next(int(sz)) + if err != nil { + if err == io.ErrUnexpectedEOF { + err = ErrShortBytes + } + return 0, err + } + nn, err = w.Write(buf) + n += int64(nn) + } else { + // Fall back to io.CopyN. + // May avoid allocating if w is a ReaderFrom (e.g. bytes.Buffer) + n, err = io.CopyN(w, m.R, int64(sz)) + if err == io.ErrUnexpectedEOF { + err = ErrShortBytes + } + } + if err != nil { + return n, err + } else if n < int64(sz) { + return n, io.ErrShortWrite + } + + // for maps and slices, read elements + for x := uintptr(0); x < o; x++ { + var n2 int64 + n2, err = m.CopyNext(w) + if err != nil { + return n, err + } + n += n2 + } + return n, nil +} + +// ReadFull implements `io.ReadFull` +func (m *Reader) ReadFull(p []byte) (int, error) { + return m.R.ReadFull(p) +} + +// Reset resets the underlying reader. +func (m *Reader) Reset(r io.Reader) { m.R.Reset(r) } + +// Buffered returns the number of bytes currently in the read buffer. +func (m *Reader) Buffered() int { return m.R.Buffered() } + +// BufferSize returns the capacity of the read buffer. +func (m *Reader) BufferSize() int { return m.R.BufferSize() } + +// NextType returns the next object type to be decoded. +func (m *Reader) NextType() (Type, error) { + p, err := m.R.Peek(1) + if err != nil { + return InvalidType, err + } + t := getType(p[0]) + if t == InvalidType { + return t, InvalidPrefixError(p[0]) + } + if t == ExtensionType { + v, err := m.peekExtensionType() + if err != nil { + return InvalidType, err + } + switch v { + case Complex64Extension: + return Complex64Type, nil + case Complex128Extension: + return Complex128Type, nil + case TimeExtension: + return TimeType, nil + } + } + return t, nil +} + +// IsNil returns whether or not +// the next byte is a null messagepack byte +func (m *Reader) IsNil() bool { + p, err := m.R.Peek(1) + return err == nil && p[0] == mnil +} + +// getNextSize returns the size of the next object on the wire. +// returns (obj size, obj elements, error) +// only maps and arrays have non-zero obj elements +// for maps and arrays, obj size does not include elements +// +// use uintptr b/c it's guaranteed to be large enough +// to hold whatever we can fit in memory. +func getNextSize(r *fwd.Reader) (uintptr, uintptr, error) { + b, err := r.Peek(1) + if err != nil { + return 0, 0, err + } + lead := b[0] + spec := &sizes[lead] + size, mode := spec.size, spec.extra + if size == 0 { + return 0, 0, InvalidPrefixError(lead) + } + if mode >= 0 { + return uintptr(size), uintptr(mode), nil + } + b, err = r.Peek(int(size)) + if err != nil { + return 0, 0, err + } + switch mode { + case extra8: + return uintptr(size) + uintptr(b[1]), 0, nil + case extra16: + return uintptr(size) + uintptr(big.Uint16(b[1:])), 0, nil + case extra32: + return uintptr(size) + uintptr(big.Uint32(b[1:])), 0, nil + case map16v: + return uintptr(size), 2 * uintptr(big.Uint16(b[1:])), nil + case map32v: + return uintptr(size), 2 * uintptr(big.Uint32(b[1:])), nil + case array16v: + return uintptr(size), uintptr(big.Uint16(b[1:])), nil + case array32v: + return uintptr(size), uintptr(big.Uint32(b[1:])), nil + default: + return 0, 0, fatal + } +} + +// Skip skips over the next object, regardless of +// its type. If it is an array or map, the whole array +// or map will be skipped. +func (m *Reader) Skip() error { + var ( + v uintptr // bytes + o uintptr // objects + err error + p []byte + ) + + // we can use the faster + // method if we have enough + // buffered data + if m.R.Buffered() >= 5 { + p, err = m.R.Peek(5) + if err != nil { + return err + } + v, o, err = getSize(p) + if err != nil { + return err + } + } else { + v, o, err = getNextSize(m.R) + if err != nil { + return err + } + } + + // 'v' is always non-zero + // if err == nil + _, err = m.R.Skip(int(v)) + if err != nil { + return err + } + + // for maps and slices, skip elements + for x := uintptr(0); x < o; x++ { + err = m.Skip() + if err != nil { + return err + } + } + return nil +} + +// ReadMapHeader reads the next object +// as a map header and returns the size +// of the map and the number of bytes written. +// It will return a TypeError{} if the next +// object is not a map. +func (m *Reader) ReadMapHeader() (sz uint32, err error) { + var p []byte + var lead byte + p, err = m.R.Peek(1) + if err != nil { + return + } + lead = p[0] + if isfixmap(lead) { + sz = uint32(rfixmap(lead)) + _, err = m.R.Skip(1) + return + } + switch lead { + case mmap16: + p, err = m.R.Next(3) + if err != nil { + return + } + sz = uint32(big.Uint16(p[1:])) + return + case mmap32: + p, err = m.R.Next(5) + if err != nil { + return + } + sz = big.Uint32(p[1:]) + return + default: + err = badPrefix(MapType, lead) + return + } +} + +// ReadMapKey reads either a 'str' or 'bin' field from +// the reader and returns the value as a []byte. It uses +// scratch for storage if it is large enough. +func (m *Reader) ReadMapKey(scratch []byte) ([]byte, error) { + out, err := m.ReadStringAsBytes(scratch) + if err != nil { + if tperr, ok := err.(TypeError); ok && tperr.Encoded == BinType { + return m.ReadBytes(scratch) + } + return nil, err + } + return out, nil +} + +// MapKeyPtr returns a []byte pointing to the contents +// of a valid map key. The key cannot be empty, and it +// must be shorter than the total buffer size of the +// *Reader. Additionally, the returned slice is only +// valid until the next *Reader method call. Users +// should exercise extreme care when using this +// method; writing into the returned slice may +// corrupt future reads. +func (m *Reader) ReadMapKeyPtr() ([]byte, error) { + p, err := m.R.Peek(1) + if err != nil { + return nil, err + } + lead := p[0] + var read int + if isfixstr(lead) { + read = int(rfixstr(lead)) + m.R.Skip(1) + goto fill + } + switch lead { + case mstr8, mbin8: + p, err = m.R.Next(2) + if err != nil { + return nil, err + } + read = int(p[1]) + case mstr16, mbin16: + p, err = m.R.Next(3) + if err != nil { + return nil, err + } + read = int(big.Uint16(p[1:])) + case mstr32, mbin32: + p, err = m.R.Next(5) + if err != nil { + return nil, err + } + read = int(big.Uint32(p[1:])) + default: + return nil, badPrefix(StrType, lead) + } +fill: + if read == 0 { + return nil, ErrShortBytes + } + return m.R.Next(read) +} + +// ReadArrayHeader reads the next object as an +// array header and returns the size of the array +// and the number of bytes read. +func (m *Reader) ReadArrayHeader() (sz uint32, err error) { + var lead byte + var p []byte + p, err = m.R.Peek(1) + if err != nil { + return + } + lead = p[0] + if isfixarray(lead) { + sz = uint32(rfixarray(lead)) + _, err = m.R.Skip(1) + return + } + switch lead { + case marray16: + p, err = m.R.Next(3) + if err != nil { + return + } + sz = uint32(big.Uint16(p[1:])) + return + + case marray32: + p, err = m.R.Next(5) + if err != nil { + return + } + sz = big.Uint32(p[1:]) + return + + default: + err = badPrefix(ArrayType, lead) + return + } +} + +// ReadNil reads a 'nil' MessagePack byte from the reader +func (m *Reader) ReadNil() error { + p, err := m.R.Peek(1) + if err != nil { + return err + } + if p[0] != mnil { + return badPrefix(NilType, p[0]) + } + _, err = m.R.Skip(1) + return err +} + +// ReadFloat64 reads a float64 from the reader. +// (If the value on the wire is encoded as a float32, +// it will be up-cast to a float64.) +func (m *Reader) ReadFloat64() (f float64, err error) { + var p []byte + p, err = m.R.Peek(9) + if err != nil { + // we'll allow a coversion from float32 to float64, + // since we don't lose any precision + if err == io.EOF && len(p) > 0 && p[0] == mfloat32 { + ef, err := m.ReadFloat32() + return float64(ef), err + } + return + } + if p[0] != mfloat64 { + // see above + if p[0] == mfloat32 { + ef, err := m.ReadFloat32() + return float64(ef), err + } + err = badPrefix(Float64Type, p[0]) + return + } + f = math.Float64frombits(getMuint64(p)) + _, err = m.R.Skip(9) + return +} + +// ReadFloat32 reads a float32 from the reader +func (m *Reader) ReadFloat32() (f float32, err error) { + var p []byte + p, err = m.R.Peek(5) + if err != nil { + return + } + if p[0] != mfloat32 { + err = badPrefix(Float32Type, p[0]) + return + } + f = math.Float32frombits(getMuint32(p)) + _, err = m.R.Skip(5) + return +} + +// ReadBool reads a bool from the reader +func (m *Reader) ReadBool() (b bool, err error) { + var p []byte + p, err = m.R.Peek(1) + if err != nil { + return + } + switch p[0] { + case mtrue: + b = true + case mfalse: + default: + err = badPrefix(BoolType, p[0]) + return + } + _, err = m.R.Skip(1) + return +} + +// ReadInt64 reads an int64 from the reader +func (m *Reader) ReadInt64() (i int64, err error) { + var p []byte + var lead byte + p, err = m.R.Peek(1) + if err != nil { + return + } + lead = p[0] + + if isfixint(lead) { + i = int64(rfixint(lead)) + _, err = m.R.Skip(1) + return + } else if isnfixint(lead) { + i = int64(rnfixint(lead)) + _, err = m.R.Skip(1) + return + } + + switch lead { + case mint8: + p, err = m.R.Next(2) + if err != nil { + return + } + i = int64(getMint8(p)) + return + + case muint8: + p, err = m.R.Next(2) + if err != nil { + return + } + i = int64(getMuint8(p)) + return + + case mint16: + p, err = m.R.Next(3) + if err != nil { + return + } + i = int64(getMint16(p)) + return + + case muint16: + p, err = m.R.Next(3) + if err != nil { + return + } + i = int64(getMuint16(p)) + return + + case mint32: + p, err = m.R.Next(5) + if err != nil { + return + } + i = int64(getMint32(p)) + return + + case muint32: + p, err = m.R.Next(5) + if err != nil { + return + } + i = int64(getMuint32(p)) + return + + case mint64: + p, err = m.R.Next(9) + if err != nil { + return + } + i = getMint64(p) + return + + case muint64: + p, err = m.R.Next(9) + if err != nil { + return + } + u := getMuint64(p) + if u > math.MaxInt64 { + err = UintOverflow{Value: u, FailedBitsize: 64} + return + } + i = int64(u) + return + + default: + err = badPrefix(IntType, lead) + return + } +} + +// ReadInt32 reads an int32 from the reader +func (m *Reader) ReadInt32() (i int32, err error) { + var in int64 + in, err = m.ReadInt64() + if in > math.MaxInt32 || in < math.MinInt32 { + err = IntOverflow{Value: in, FailedBitsize: 32} + return + } + i = int32(in) + return +} + +// ReadInt16 reads an int16 from the reader +func (m *Reader) ReadInt16() (i int16, err error) { + var in int64 + in, err = m.ReadInt64() + if in > math.MaxInt16 || in < math.MinInt16 { + err = IntOverflow{Value: in, FailedBitsize: 16} + return + } + i = int16(in) + return +} + +// ReadInt8 reads an int8 from the reader +func (m *Reader) ReadInt8() (i int8, err error) { + var in int64 + in, err = m.ReadInt64() + if in > math.MaxInt8 || in < math.MinInt8 { + err = IntOverflow{Value: in, FailedBitsize: 8} + return + } + i = int8(in) + return +} + +// ReadInt reads an int from the reader +func (m *Reader) ReadInt() (i int, err error) { + if smallint { + var in int32 + in, err = m.ReadInt32() + i = int(in) + return + } + var in int64 + in, err = m.ReadInt64() + i = int(in) + return +} + +// ReadUint64 reads a uint64 from the reader +func (m *Reader) ReadUint64() (u uint64, err error) { + var p []byte + var lead byte + p, err = m.R.Peek(1) + if err != nil { + return + } + lead = p[0] + if isfixint(lead) { + u = uint64(rfixint(lead)) + _, err = m.R.Skip(1) + return + } + switch lead { + case mint8: + p, err = m.R.Next(2) + if err != nil { + return + } + v := int64(getMint8(p)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + return + + case muint8: + p, err = m.R.Next(2) + if err != nil { + return + } + u = uint64(getMuint8(p)) + return + + case mint16: + p, err = m.R.Next(3) + if err != nil { + return + } + v := int64(getMint16(p)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + return + + case muint16: + p, err = m.R.Next(3) + if err != nil { + return + } + u = uint64(getMuint16(p)) + return + + case mint32: + p, err = m.R.Next(5) + if err != nil { + return + } + v := int64(getMint32(p)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + return + + case muint32: + p, err = m.R.Next(5) + if err != nil { + return + } + u = uint64(getMuint32(p)) + return + + case mint64: + p, err = m.R.Next(9) + if err != nil { + return + } + v := int64(getMint64(p)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + return + + case muint64: + p, err = m.R.Next(9) + if err != nil { + return + } + u = getMuint64(p) + return + + default: + if isnfixint(lead) { + err = UintBelowZero{Value: int64(rnfixint(lead))} + } else { + err = badPrefix(UintType, lead) + } + return + + } +} + +// ReadUint32 reads a uint32 from the reader +func (m *Reader) ReadUint32() (u uint32, err error) { + var in uint64 + in, err = m.ReadUint64() + if in > math.MaxUint32 { + err = UintOverflow{Value: in, FailedBitsize: 32} + return + } + u = uint32(in) + return +} + +// ReadUint16 reads a uint16 from the reader +func (m *Reader) ReadUint16() (u uint16, err error) { + var in uint64 + in, err = m.ReadUint64() + if in > math.MaxUint16 { + err = UintOverflow{Value: in, FailedBitsize: 16} + return + } + u = uint16(in) + return +} + +// ReadUint8 reads a uint8 from the reader +func (m *Reader) ReadUint8() (u uint8, err error) { + var in uint64 + in, err = m.ReadUint64() + if in > math.MaxUint8 { + err = UintOverflow{Value: in, FailedBitsize: 8} + return + } + u = uint8(in) + return +} + +// ReadUint reads a uint from the reader +func (m *Reader) ReadUint() (u uint, err error) { + if smallint { + var un uint32 + un, err = m.ReadUint32() + u = uint(un) + return + } + var un uint64 + un, err = m.ReadUint64() + u = uint(un) + return +} + +// ReadByte is analogous to ReadUint8. +// +// NOTE: this is *not* an implementation +// of io.ByteReader. +func (m *Reader) ReadByte() (b byte, err error) { + var in uint64 + in, err = m.ReadUint64() + if in > math.MaxUint8 { + err = UintOverflow{Value: in, FailedBitsize: 8} + return + } + b = byte(in) + return +} + +// ReadBytes reads a MessagePack 'bin' object +// from the reader and returns its value. It may +// use 'scratch' for storage if it is non-nil. +func (m *Reader) ReadBytes(scratch []byte) (b []byte, err error) { + var p []byte + var lead byte + p, err = m.R.Peek(2) + if err != nil { + return + } + lead = p[0] + var read int64 + switch lead { + case mbin8: + read = int64(p[1]) + m.R.Skip(2) + case mbin16: + p, err = m.R.Next(3) + if err != nil { + return + } + read = int64(big.Uint16(p[1:])) + case mbin32: + p, err = m.R.Next(5) + if err != nil { + return + } + read = int64(big.Uint32(p[1:])) + default: + err = badPrefix(BinType, lead) + return + } + if int64(cap(scratch)) < read { + b = make([]byte, read) + } else { + b = scratch[0:read] + } + _, err = m.R.ReadFull(b) + return +} + +// ReadBytesHeader reads the size header +// of a MessagePack 'bin' object. The user +// is responsible for dealing with the next +// 'sz' bytes from the reader in an application-specific +// way. +func (m *Reader) ReadBytesHeader() (sz uint32, err error) { + var p []byte + p, err = m.R.Peek(1) + if err != nil { + return + } + switch p[0] { + case mbin8: + p, err = m.R.Next(2) + if err != nil { + return + } + sz = uint32(p[1]) + return + case mbin16: + p, err = m.R.Next(3) + if err != nil { + return + } + sz = uint32(big.Uint16(p[1:])) + return + case mbin32: + p, err = m.R.Next(5) + if err != nil { + return + } + sz = uint32(big.Uint32(p[1:])) + return + default: + err = badPrefix(BinType, p[0]) + return + } +} + +// ReadExactBytes reads a MessagePack 'bin'-encoded +// object off of the wire into the provided slice. An +// ArrayError will be returned if the object is not +// exactly the length of the input slice. +func (m *Reader) ReadExactBytes(into []byte) error { + p, err := m.R.Peek(2) + if err != nil { + return err + } + lead := p[0] + var read int64 // bytes to read + var skip int // prefix size to skip + switch lead { + case mbin8: + read = int64(p[1]) + skip = 2 + case mbin16: + p, err = m.R.Peek(3) + if err != nil { + return err + } + read = int64(big.Uint16(p[1:])) + skip = 3 + case mbin32: + p, err = m.R.Peek(5) + if err != nil { + return err + } + read = int64(big.Uint32(p[1:])) + skip = 5 + default: + return badPrefix(BinType, lead) + } + if read != int64(len(into)) { + return ArrayError{Wanted: uint32(len(into)), Got: uint32(read)} + } + m.R.Skip(skip) + _, err = m.R.ReadFull(into) + return err +} + +// ReadStringAsBytes reads a MessagePack 'str' (utf-8) string +// and returns its value as bytes. It may use 'scratch' for storage +// if it is non-nil. +func (m *Reader) ReadStringAsBytes(scratch []byte) (b []byte, err error) { + var p []byte + var lead byte + p, err = m.R.Peek(1) + if err != nil { + return + } + lead = p[0] + var read int64 + + if isfixstr(lead) { + read = int64(rfixstr(lead)) + m.R.Skip(1) + goto fill + } + + switch lead { + case mstr8: + p, err = m.R.Next(2) + if err != nil { + return + } + read = int64(uint8(p[1])) + case mstr16: + p, err = m.R.Next(3) + if err != nil { + return + } + read = int64(big.Uint16(p[1:])) + case mstr32: + p, err = m.R.Next(5) + if err != nil { + return + } + read = int64(big.Uint32(p[1:])) + default: + err = badPrefix(StrType, lead) + return + } +fill: + if int64(cap(scratch)) < read { + b = make([]byte, read) + } else { + b = scratch[0:read] + } + _, err = m.R.ReadFull(b) + return +} + +// ReadStringHeader reads a string header +// off of the wire. The user is then responsible +// for dealing with the next 'sz' bytes from +// the reader in an application-specific manner. +func (m *Reader) ReadStringHeader() (sz uint32, err error) { + var p []byte + p, err = m.R.Peek(1) + if err != nil { + return + } + lead := p[0] + if isfixstr(lead) { + sz = uint32(rfixstr(lead)) + m.R.Skip(1) + return + } + switch lead { + case mstr8: + p, err = m.R.Next(2) + if err != nil { + return + } + sz = uint32(p[1]) + return + case mstr16: + p, err = m.R.Next(3) + if err != nil { + return + } + sz = uint32(big.Uint16(p[1:])) + return + case mstr32: + p, err = m.R.Next(5) + if err != nil { + return + } + sz = big.Uint32(p[1:]) + return + default: + err = badPrefix(StrType, lead) + return + } +} + +// ReadString reads a utf-8 string from the reader +func (m *Reader) ReadString() (s string, err error) { + var p []byte + var lead byte + var read int64 + p, err = m.R.Peek(1) + if err != nil { + return + } + lead = p[0] + + if isfixstr(lead) { + read = int64(rfixstr(lead)) + m.R.Skip(1) + goto fill + } + + switch lead { + case mstr8: + p, err = m.R.Next(2) + if err != nil { + return + } + read = int64(uint8(p[1])) + case mstr16: + p, err = m.R.Next(3) + if err != nil { + return + } + read = int64(big.Uint16(p[1:])) + case mstr32: + p, err = m.R.Next(5) + if err != nil { + return + } + read = int64(big.Uint32(p[1:])) + default: + err = badPrefix(StrType, lead) + return + } +fill: + if read == 0 { + s, err = "", nil + return + } + // reading into the memory + // that will become the string + // itself has vastly superior + // worst-case performance, because + // the reader buffer doesn't have + // to be large enough to hold the string. + // the idea here is to make it more + // difficult for someone malicious + // to cause the system to run out of + // memory by sending very large strings. + // + // NOTE: this works because the argument + // passed to (*fwd.Reader).ReadFull escapes + // to the heap; its argument may, in turn, + // be passed to the underlying reader, and + // thus escape analysis *must* conclude that + // 'out' escapes. + out := make([]byte, read) + _, err = m.R.ReadFull(out) + if err != nil { + return + } + s = UnsafeString(out) + return +} + +// ReadComplex64 reads a complex64 from the reader +func (m *Reader) ReadComplex64() (f complex64, err error) { + var p []byte + p, err = m.R.Peek(10) + if err != nil { + return + } + if p[0] != mfixext8 { + err = badPrefix(Complex64Type, p[0]) + return + } + if int8(p[1]) != Complex64Extension { + err = errExt(int8(p[1]), Complex64Extension) + return + } + f = complex(math.Float32frombits(big.Uint32(p[2:])), + math.Float32frombits(big.Uint32(p[6:]))) + _, err = m.R.Skip(10) + return +} + +// ReadComplex128 reads a complex128 from the reader +func (m *Reader) ReadComplex128() (f complex128, err error) { + var p []byte + p, err = m.R.Peek(18) + if err != nil { + return + } + if p[0] != mfixext16 { + err = badPrefix(Complex128Type, p[0]) + return + } + if int8(p[1]) != Complex128Extension { + err = errExt(int8(p[1]), Complex128Extension) + return + } + f = complex(math.Float64frombits(big.Uint64(p[2:])), + math.Float64frombits(big.Uint64(p[10:]))) + _, err = m.R.Skip(18) + return +} + +// ReadMapStrIntf reads a MessagePack map into a map[string]interface{}. +// (You must pass a non-nil map into the function.) +func (m *Reader) ReadMapStrIntf(mp map[string]interface{}) (err error) { + var sz uint32 + sz, err = m.ReadMapHeader() + if err != nil { + return + } + for key := range mp { + delete(mp, key) + } + for i := uint32(0); i < sz; i++ { + var key string + var val interface{} + key, err = m.ReadString() + if err != nil { + return + } + val, err = m.ReadIntf() + if err != nil { + return + } + mp[key] = val + } + return +} + +// ReadTime reads a time.Time object from the reader. +// The returned time's location will be set to time.Local. +func (m *Reader) ReadTime() (t time.Time, err error) { + var p []byte + p, err = m.R.Peek(15) + if err != nil { + return + } + if p[0] != mext8 || p[1] != 12 { + err = badPrefix(TimeType, p[0]) + return + } + if int8(p[2]) != TimeExtension { + err = errExt(int8(p[2]), TimeExtension) + return + } + sec, nsec := getUnix(p[3:]) + t = time.Unix(sec, int64(nsec)).Local() + _, err = m.R.Skip(15) + return +} + +// ReadIntf reads out the next object as a raw interface{}. +// Arrays are decoded as []interface{}, and maps are decoded +// as map[string]interface{}. Integers are decoded as int64 +// and unsigned integers are decoded as uint64. +func (m *Reader) ReadIntf() (i interface{}, err error) { + var t Type + t, err = m.NextType() + if err != nil { + return + } + switch t { + case BoolType: + i, err = m.ReadBool() + return + + case IntType: + i, err = m.ReadInt64() + return + + case UintType: + i, err = m.ReadUint64() + return + + case BinType: + i, err = m.ReadBytes(nil) + return + + case StrType: + i, err = m.ReadString() + return + + case Complex64Type: + i, err = m.ReadComplex64() + return + + case Complex128Type: + i, err = m.ReadComplex128() + return + + case TimeType: + i, err = m.ReadTime() + return + + case ExtensionType: + var t int8 + t, err = m.peekExtensionType() + if err != nil { + return + } + f, ok := extensionReg[t] + if ok { + e := f() + err = m.ReadExtension(e) + i = e + return + } + var e RawExtension + e.Type = t + err = m.ReadExtension(&e) + i = &e + return + + case MapType: + mp := make(map[string]interface{}) + err = m.ReadMapStrIntf(mp) + i = mp + return + + case NilType: + err = m.ReadNil() + i = nil + return + + case Float32Type: + i, err = m.ReadFloat32() + return + + case Float64Type: + i, err = m.ReadFloat64() + return + + case ArrayType: + var sz uint32 + sz, err = m.ReadArrayHeader() + + if err != nil { + return + } + out := make([]interface{}, int(sz)) + for j := range out { + out[j], err = m.ReadIntf() + if err != nil { + return + } + } + i = out + return + + default: + return nil, fatal // unreachable + } +} diff --git a/vendor/github.com/tinylib/msgp/msgp/read_bytes.go b/vendor/github.com/tinylib/msgp/msgp/read_bytes.go new file mode 100644 index 00000000..e4199757 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/read_bytes.go @@ -0,0 +1,1197 @@ +package msgp + +import ( + "bytes" + "encoding/binary" + "math" + "time" +) + +var big = binary.BigEndian + +// NextType returns the type of the next +// object in the slice. If the length +// of the input is zero, it returns +// InvalidType. +func NextType(b []byte) Type { + if len(b) == 0 { + return InvalidType + } + spec := sizes[b[0]] + t := spec.typ + if t == ExtensionType && len(b) > int(spec.size) { + var tp int8 + if spec.extra == constsize { + tp = int8(b[1]) + } else { + tp = int8(b[spec.size-1]) + } + switch tp { + case TimeExtension: + return TimeType + case Complex128Extension: + return Complex128Type + case Complex64Extension: + return Complex64Type + default: + return ExtensionType + } + } + return t +} + +// IsNil returns true if len(b)>0 and +// the leading byte is a 'nil' MessagePack +// byte; false otherwise +func IsNil(b []byte) bool { + if len(b) != 0 && b[0] == mnil { + return true + } + return false +} + +// Raw is raw MessagePack. +// Raw allows you to read and write +// data without interpreting its contents. +type Raw []byte + +// MarshalMsg implements msgp.Marshaler. +// It appends the raw contents of 'raw' +// to the provided byte slice. If 'raw' +// is 0 bytes, 'nil' will be appended instead. +func (r Raw) MarshalMsg(b []byte) ([]byte, error) { + i := len(r) + if i == 0 { + return AppendNil(b), nil + } + o, l := ensure(b, i) + copy(o[l:], []byte(r)) + return o, nil +} + +// UnmarshalMsg implements msgp.Unmarshaler. +// It sets the contents of *Raw to be the next +// object in the provided byte slice. +func (r *Raw) UnmarshalMsg(b []byte) ([]byte, error) { + l := len(b) + out, err := Skip(b) + if err != nil { + return b, err + } + rlen := l - len(out) + if IsNil(b[:rlen]) { + rlen = 0 + } + if cap(*r) < rlen { + *r = make(Raw, rlen) + } else { + *r = (*r)[0:rlen] + } + copy(*r, b[:rlen]) + return out, nil +} + +// EncodeMsg implements msgp.Encodable. +// It writes the raw bytes to the writer. +// If r is empty, it writes 'nil' instead. +func (r Raw) EncodeMsg(w *Writer) error { + if len(r) == 0 { + return w.WriteNil() + } + _, err := w.Write([]byte(r)) + return err +} + +// DecodeMsg implements msgp.Decodable. +// It sets the value of *Raw to be the +// next object on the wire. +func (r *Raw) DecodeMsg(f *Reader) error { + *r = (*r)[:0] + err := appendNext(f, (*[]byte)(r)) + if IsNil(*r) { + *r = (*r)[:0] + } + return err +} + +// Msgsize implements msgp.Sizer +func (r Raw) Msgsize() int { + l := len(r) + if l == 0 { + return 1 // for 'nil' + } + return l +} + +func appendNext(f *Reader, d *[]byte) error { + amt, o, err := getNextSize(f.R) + if err != nil { + return err + } + var i int + *d, i = ensure(*d, int(amt)) + _, err = f.R.ReadFull((*d)[i:]) + if err != nil { + return err + } + for o > 0 { + err = appendNext(f, d) + if err != nil { + return err + } + o-- + } + return nil +} + +// MarshalJSON implements json.Marshaler +func (r *Raw) MarshalJSON() ([]byte, error) { + var buf bytes.Buffer + _, err := UnmarshalAsJSON(&buf, []byte(*r)) + return buf.Bytes(), err +} + +// ReadMapHeaderBytes reads a map header size +// from 'b' and returns the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a map) +func ReadMapHeaderBytes(b []byte) (sz uint32, o []byte, err error) { + l := len(b) + if l < 1 { + err = ErrShortBytes + return + } + + lead := b[0] + if isfixmap(lead) { + sz = uint32(rfixmap(lead)) + o = b[1:] + return + } + + switch lead { + case mmap16: + if l < 3 { + err = ErrShortBytes + return + } + sz = uint32(big.Uint16(b[1:])) + o = b[3:] + return + + case mmap32: + if l < 5 { + err = ErrShortBytes + return + } + sz = big.Uint32(b[1:]) + o = b[5:] + return + + default: + err = badPrefix(MapType, lead) + return + } +} + +// ReadMapKeyZC attempts to read a map key +// from 'b' and returns the key bytes and the remaining bytes +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a str or bin) +func ReadMapKeyZC(b []byte) ([]byte, []byte, error) { + o, x, err := ReadStringZC(b) + if err != nil { + if tperr, ok := err.(TypeError); ok && tperr.Encoded == BinType { + return ReadBytesZC(b) + } + return nil, b, err + } + return o, x, nil +} + +// ReadArrayHeaderBytes attempts to read +// the array header size off of 'b' and return +// the size and remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not an array) +func ReadArrayHeaderBytes(b []byte) (sz uint32, o []byte, err error) { + if len(b) < 1 { + return 0, nil, ErrShortBytes + } + lead := b[0] + if isfixarray(lead) { + sz = uint32(rfixarray(lead)) + o = b[1:] + return + } + + switch lead { + case marray16: + if len(b) < 3 { + err = ErrShortBytes + return + } + sz = uint32(big.Uint16(b[1:])) + o = b[3:] + return + + case marray32: + if len(b) < 5 { + err = ErrShortBytes + return + } + sz = big.Uint32(b[1:]) + o = b[5:] + return + + default: + err = badPrefix(ArrayType, lead) + return + } +} + +// ReadNilBytes tries to read a "nil" byte +// off of 'b' and return the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a 'nil') +// - InvalidPrefixError +func ReadNilBytes(b []byte) ([]byte, error) { + if len(b) < 1 { + return nil, ErrShortBytes + } + if b[0] != mnil { + return b, badPrefix(NilType, b[0]) + } + return b[1:], nil +} + +// ReadFloat64Bytes tries to read a float64 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a float64) +func ReadFloat64Bytes(b []byte) (f float64, o []byte, err error) { + if len(b) < 9 { + if len(b) >= 5 && b[0] == mfloat32 { + var tf float32 + tf, o, err = ReadFloat32Bytes(b) + f = float64(tf) + return + } + err = ErrShortBytes + return + } + + if b[0] != mfloat64 { + if b[0] == mfloat32 { + var tf float32 + tf, o, err = ReadFloat32Bytes(b) + f = float64(tf) + return + } + err = badPrefix(Float64Type, b[0]) + return + } + + f = math.Float64frombits(getMuint64(b)) + o = b[9:] + return +} + +// ReadFloat32Bytes tries to read a float64 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a float32) +func ReadFloat32Bytes(b []byte) (f float32, o []byte, err error) { + if len(b) < 5 { + err = ErrShortBytes + return + } + + if b[0] != mfloat32 { + err = TypeError{Method: Float32Type, Encoded: getType(b[0])} + return + } + + f = math.Float32frombits(getMuint32(b)) + o = b[5:] + return +} + +// ReadBoolBytes tries to read a float64 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a bool) +func ReadBoolBytes(b []byte) (bool, []byte, error) { + if len(b) < 1 { + return false, b, ErrShortBytes + } + switch b[0] { + case mtrue: + return true, b[1:], nil + case mfalse: + return false, b[1:], nil + default: + return false, b, badPrefix(BoolType, b[0]) + } +} + +// ReadInt64Bytes tries to read an int64 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError (not a int) +func ReadInt64Bytes(b []byte) (i int64, o []byte, err error) { + l := len(b) + if l < 1 { + return 0, nil, ErrShortBytes + } + + lead := b[0] + if isfixint(lead) { + i = int64(rfixint(lead)) + o = b[1:] + return + } + if isnfixint(lead) { + i = int64(rnfixint(lead)) + o = b[1:] + return + } + + switch lead { + case mint8: + if l < 2 { + err = ErrShortBytes + return + } + i = int64(getMint8(b)) + o = b[2:] + return + + case muint8: + if l < 2 { + err = ErrShortBytes + return + } + i = int64(getMuint8(b)) + o = b[2:] + return + + case mint16: + if l < 3 { + err = ErrShortBytes + return + } + i = int64(getMint16(b)) + o = b[3:] + return + + case muint16: + if l < 3 { + err = ErrShortBytes + return + } + i = int64(getMuint16(b)) + o = b[3:] + return + + case mint32: + if l < 5 { + err = ErrShortBytes + return + } + i = int64(getMint32(b)) + o = b[5:] + return + + case muint32: + if l < 5 { + err = ErrShortBytes + return + } + i = int64(getMuint32(b)) + o = b[5:] + return + + case mint64: + if l < 9 { + err = ErrShortBytes + return + } + i = int64(getMint64(b)) + o = b[9:] + return + + case muint64: + if l < 9 { + err = ErrShortBytes + return + } + u := getMuint64(b) + if u > math.MaxInt64 { + err = UintOverflow{Value: u, FailedBitsize: 64} + return + } + i = int64(u) + o = b[9:] + return + + default: + err = badPrefix(IntType, lead) + return + } +} + +// ReadInt32Bytes tries to read an int32 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a int) +// - IntOverflow{} (value doesn't fit in int32) +func ReadInt32Bytes(b []byte) (int32, []byte, error) { + i, o, err := ReadInt64Bytes(b) + if i > math.MaxInt32 || i < math.MinInt32 { + return 0, o, IntOverflow{Value: i, FailedBitsize: 32} + } + return int32(i), o, err +} + +// ReadInt16Bytes tries to read an int16 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a int) +// - IntOverflow{} (value doesn't fit in int16) +func ReadInt16Bytes(b []byte) (int16, []byte, error) { + i, o, err := ReadInt64Bytes(b) + if i > math.MaxInt16 || i < math.MinInt16 { + return 0, o, IntOverflow{Value: i, FailedBitsize: 16} + } + return int16(i), o, err +} + +// ReadInt8Bytes tries to read an int16 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a int) +// - IntOverflow{} (value doesn't fit in int8) +func ReadInt8Bytes(b []byte) (int8, []byte, error) { + i, o, err := ReadInt64Bytes(b) + if i > math.MaxInt8 || i < math.MinInt8 { + return 0, o, IntOverflow{Value: i, FailedBitsize: 8} + } + return int8(i), o, err +} + +// ReadIntBytes tries to read an int +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a int) +// - IntOverflow{} (value doesn't fit in int; 32-bit platforms only) +func ReadIntBytes(b []byte) (int, []byte, error) { + if smallint { + i, b, err := ReadInt32Bytes(b) + return int(i), b, err + } + i, b, err := ReadInt64Bytes(b) + return int(i), b, err +} + +// ReadUint64Bytes tries to read a uint64 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a uint) +func ReadUint64Bytes(b []byte) (u uint64, o []byte, err error) { + l := len(b) + if l < 1 { + return 0, nil, ErrShortBytes + } + + lead := b[0] + if isfixint(lead) { + u = uint64(rfixint(lead)) + o = b[1:] + return + } + + switch lead { + case mint8: + if l < 2 { + err = ErrShortBytes + return + } + v := int64(getMint8(b)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + o = b[2:] + return + + case muint8: + if l < 2 { + err = ErrShortBytes + return + } + u = uint64(getMuint8(b)) + o = b[2:] + return + + case mint16: + if l < 3 { + err = ErrShortBytes + return + } + v := int64(getMint16(b)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + o = b[3:] + return + + case muint16: + if l < 3 { + err = ErrShortBytes + return + } + u = uint64(getMuint16(b)) + o = b[3:] + return + + case mint32: + if l < 5 { + err = ErrShortBytes + return + } + v := int64(getMint32(b)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + o = b[5:] + return + + case muint32: + if l < 5 { + err = ErrShortBytes + return + } + u = uint64(getMuint32(b)) + o = b[5:] + return + + case mint64: + if l < 9 { + err = ErrShortBytes + return + } + v := int64(getMint64(b)) + if v < 0 { + err = UintBelowZero{Value: v} + return + } + u = uint64(v) + o = b[9:] + return + + case muint64: + if l < 9 { + err = ErrShortBytes + return + } + u = getMuint64(b) + o = b[9:] + return + + default: + if isnfixint(lead) { + err = UintBelowZero{Value: int64(rnfixint(lead))} + } else { + err = badPrefix(UintType, lead) + } + return + } +} + +// ReadUint32Bytes tries to read a uint32 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a uint) +// - UintOverflow{} (value too large for uint32) +func ReadUint32Bytes(b []byte) (uint32, []byte, error) { + v, o, err := ReadUint64Bytes(b) + if v > math.MaxUint32 { + return 0, nil, UintOverflow{Value: v, FailedBitsize: 32} + } + return uint32(v), o, err +} + +// ReadUint16Bytes tries to read a uint16 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a uint) +// - UintOverflow{} (value too large for uint16) +func ReadUint16Bytes(b []byte) (uint16, []byte, error) { + v, o, err := ReadUint64Bytes(b) + if v > math.MaxUint16 { + return 0, nil, UintOverflow{Value: v, FailedBitsize: 16} + } + return uint16(v), o, err +} + +// ReadUint8Bytes tries to read a uint8 +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a uint) +// - UintOverflow{} (value too large for uint8) +func ReadUint8Bytes(b []byte) (uint8, []byte, error) { + v, o, err := ReadUint64Bytes(b) + if v > math.MaxUint8 { + return 0, nil, UintOverflow{Value: v, FailedBitsize: 8} + } + return uint8(v), o, err +} + +// ReadUintBytes tries to read a uint +// from 'b' and return the value and the remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a uint) +// - UintOverflow{} (value too large for uint; 32-bit platforms only) +func ReadUintBytes(b []byte) (uint, []byte, error) { + if smallint { + u, b, err := ReadUint32Bytes(b) + return uint(u), b, err + } + u, b, err := ReadUint64Bytes(b) + return uint(u), b, err +} + +// ReadByteBytes is analogous to ReadUint8Bytes +func ReadByteBytes(b []byte) (byte, []byte, error) { + return ReadUint8Bytes(b) +} + +// ReadBytesBytes reads a 'bin' object +// from 'b' and returns its vaue and +// the remaining bytes in 'b'. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a 'bin' object) +func ReadBytesBytes(b []byte, scratch []byte) (v []byte, o []byte, err error) { + return readBytesBytes(b, scratch, false) +} + +func readBytesBytes(b []byte, scratch []byte, zc bool) (v []byte, o []byte, err error) { + l := len(b) + if l < 1 { + return nil, nil, ErrShortBytes + } + + lead := b[0] + var read int + switch lead { + case mbin8: + if l < 2 { + err = ErrShortBytes + return + } + + read = int(b[1]) + b = b[2:] + + case mbin16: + if l < 3 { + err = ErrShortBytes + return + } + read = int(big.Uint16(b[1:])) + b = b[3:] + + case mbin32: + if l < 5 { + err = ErrShortBytes + return + } + read = int(big.Uint32(b[1:])) + b = b[5:] + + default: + err = badPrefix(BinType, lead) + return + } + + if len(b) < read { + err = ErrShortBytes + return + } + + // zero-copy + if zc { + v = b[0:read] + o = b[read:] + return + } + + if cap(scratch) >= read { + v = scratch[0:read] + } else { + v = make([]byte, read) + } + + o = b[copy(v, b):] + return +} + +// ReadBytesZC extracts the messagepack-encoded +// binary field without copying. The returned []byte +// points to the same memory as the input slice. +// Possible errors: +// - ErrShortBytes (b not long enough) +// - TypeError{} (object not 'bin') +func ReadBytesZC(b []byte) (v []byte, o []byte, err error) { + return readBytesBytes(b, nil, true) +} + +func ReadExactBytes(b []byte, into []byte) (o []byte, err error) { + l := len(b) + if l < 1 { + err = ErrShortBytes + return + } + + lead := b[0] + var read uint32 + var skip int + switch lead { + case mbin8: + if l < 2 { + err = ErrShortBytes + return + } + + read = uint32(b[1]) + skip = 2 + + case mbin16: + if l < 3 { + err = ErrShortBytes + return + } + read = uint32(big.Uint16(b[1:])) + skip = 3 + + case mbin32: + if l < 5 { + err = ErrShortBytes + return + } + read = uint32(big.Uint32(b[1:])) + skip = 5 + + default: + err = badPrefix(BinType, lead) + return + } + + if read != uint32(len(into)) { + err = ArrayError{Wanted: uint32(len(into)), Got: read} + return + } + + o = b[skip+copy(into, b[skip:]):] + return +} + +// ReadStringZC reads a messagepack string field +// without copying. The returned []byte points +// to the same memory as the input slice. +// Possible errors: +// - ErrShortBytes (b not long enough) +// - TypeError{} (object not 'str') +func ReadStringZC(b []byte) (v []byte, o []byte, err error) { + l := len(b) + if l < 1 { + return nil, nil, ErrShortBytes + } + + lead := b[0] + var read int + + if isfixstr(lead) { + read = int(rfixstr(lead)) + b = b[1:] + } else { + switch lead { + case mstr8: + if l < 2 { + err = ErrShortBytes + return + } + read = int(b[1]) + b = b[2:] + + case mstr16: + if l < 3 { + err = ErrShortBytes + return + } + read = int(big.Uint16(b[1:])) + b = b[3:] + + case mstr32: + if l < 5 { + err = ErrShortBytes + return + } + read = int(big.Uint32(b[1:])) + b = b[5:] + + default: + err = TypeError{Method: StrType, Encoded: getType(lead)} + return + } + } + + if len(b) < read { + err = ErrShortBytes + return + } + + v = b[0:read] + o = b[read:] + return +} + +// ReadStringBytes reads a 'str' object +// from 'b' and returns its value and the +// remaining bytes in 'b'. +// Possible errors: +// - ErrShortBytes (b not long enough) +// - TypeError{} (not 'str' type) +// - InvalidPrefixError +func ReadStringBytes(b []byte) (string, []byte, error) { + v, o, err := ReadStringZC(b) + return string(v), o, err +} + +// ReadStringAsBytes reads a 'str' object +// into a slice of bytes. 'v' is the value of +// the 'str' object, which may reside in memory +// pointed to by 'scratch.' 'o' is the remaining bytes +// in 'b.'' +// Possible errors: +// - ErrShortBytes (b not long enough) +// - TypeError{} (not 'str' type) +// - InvalidPrefixError (unknown type marker) +func ReadStringAsBytes(b []byte, scratch []byte) (v []byte, o []byte, err error) { + var tmp []byte + tmp, o, err = ReadStringZC(b) + v = append(scratch[:0], tmp...) + return +} + +// ReadComplex128Bytes reads a complex128 +// extension object from 'b' and returns the +// remaining bytes. +// Possible errors: +// - ErrShortBytes (not enough bytes in 'b') +// - TypeError{} (object not a complex128) +// - InvalidPrefixError +// - ExtensionTypeError{} (object an extension of the correct size, but not a complex128) +func ReadComplex128Bytes(b []byte) (c complex128, o []byte, err error) { + if len(b) < 18 { + err = ErrShortBytes + return + } + if b[0] != mfixext16 { + err = badPrefix(Complex128Type, b[0]) + return + } + if int8(b[1]) != Complex128Extension { + err = errExt(int8(b[1]), Complex128Extension) + return + } + c = complex(math.Float64frombits(big.Uint64(b[2:])), + math.Float64frombits(big.Uint64(b[10:]))) + o = b[18:] + return +} + +// ReadComplex64Bytes reads a complex64 +// extension object from 'b' and returns the +// remaining bytes. +// Possible errors: +// - ErrShortBytes (not enough bytes in 'b') +// - TypeError{} (object not a complex64) +// - ExtensionTypeError{} (object an extension of the correct size, but not a complex64) +func ReadComplex64Bytes(b []byte) (c complex64, o []byte, err error) { + if len(b) < 10 { + err = ErrShortBytes + return + } + if b[0] != mfixext8 { + err = badPrefix(Complex64Type, b[0]) + return + } + if b[1] != Complex64Extension { + err = errExt(int8(b[1]), Complex64Extension) + return + } + c = complex(math.Float32frombits(big.Uint32(b[2:])), + math.Float32frombits(big.Uint32(b[6:]))) + o = b[10:] + return +} + +// ReadTimeBytes reads a time.Time +// extension object from 'b' and returns the +// remaining bytes. +// Possible errors: +// - ErrShortBytes (not enough bytes in 'b') +// - TypeError{} (object not a complex64) +// - ExtensionTypeError{} (object an extension of the correct size, but not a time.Time) +func ReadTimeBytes(b []byte) (t time.Time, o []byte, err error) { + if len(b) < 15 { + err = ErrShortBytes + return + } + if b[0] != mext8 || b[1] != 12 { + err = badPrefix(TimeType, b[0]) + return + } + if int8(b[2]) != TimeExtension { + err = errExt(int8(b[2]), TimeExtension) + return + } + sec, nsec := getUnix(b[3:]) + t = time.Unix(sec, int64(nsec)).Local() + o = b[15:] + return +} + +// ReadMapStrIntfBytes reads a map[string]interface{} +// out of 'b' and returns the map and remaining bytes. +// If 'old' is non-nil, the values will be read into that map. +func ReadMapStrIntfBytes(b []byte, old map[string]interface{}) (v map[string]interface{}, o []byte, err error) { + var sz uint32 + o = b + sz, o, err = ReadMapHeaderBytes(o) + + if err != nil { + return + } + + if old != nil { + for key := range old { + delete(old, key) + } + v = old + } else { + v = make(map[string]interface{}, int(sz)) + } + + for z := uint32(0); z < sz; z++ { + if len(o) < 1 { + err = ErrShortBytes + return + } + var key []byte + key, o, err = ReadMapKeyZC(o) + if err != nil { + return + } + var val interface{} + val, o, err = ReadIntfBytes(o) + if err != nil { + return + } + v[string(key)] = val + } + return +} + +// ReadIntfBytes attempts to read +// the next object out of 'b' as a raw interface{} and +// return the remaining bytes. +func ReadIntfBytes(b []byte) (i interface{}, o []byte, err error) { + if len(b) < 1 { + err = ErrShortBytes + return + } + + k := NextType(b) + + switch k { + case MapType: + i, o, err = ReadMapStrIntfBytes(b, nil) + return + + case ArrayType: + var sz uint32 + sz, o, err = ReadArrayHeaderBytes(b) + if err != nil { + return + } + j := make([]interface{}, int(sz)) + i = j + for d := range j { + j[d], o, err = ReadIntfBytes(o) + if err != nil { + return + } + } + return + + case Float32Type: + i, o, err = ReadFloat32Bytes(b) + return + + case Float64Type: + i, o, err = ReadFloat64Bytes(b) + return + + case IntType: + i, o, err = ReadInt64Bytes(b) + return + + case UintType: + i, o, err = ReadUint64Bytes(b) + return + + case BoolType: + i, o, err = ReadBoolBytes(b) + return + + case TimeType: + i, o, err = ReadTimeBytes(b) + return + + case Complex64Type: + i, o, err = ReadComplex64Bytes(b) + return + + case Complex128Type: + i, o, err = ReadComplex128Bytes(b) + return + + case ExtensionType: + var t int8 + t, err = peekExtension(b) + if err != nil { + return + } + // use a user-defined extension, + // if it's been registered + f, ok := extensionReg[t] + if ok { + e := f() + o, err = ReadExtensionBytes(b, e) + i = e + return + } + // last resort is a raw extension + e := RawExtension{} + e.Type = int8(t) + o, err = ReadExtensionBytes(b, &e) + i = &e + return + + case NilType: + o, err = ReadNilBytes(b) + return + + case BinType: + i, o, err = ReadBytesBytes(b, nil) + return + + case StrType: + i, o, err = ReadStringBytes(b) + return + + default: + err = InvalidPrefixError(b[0]) + return + } +} + +// Skip skips the next object in 'b' and +// returns the remaining bytes. If the object +// is a map or array, all of its elements +// will be skipped. +// Possible Errors: +// - ErrShortBytes (not enough bytes in b) +// - InvalidPrefixError (bad encoding) +func Skip(b []byte) ([]byte, error) { + sz, asz, err := getSize(b) + if err != nil { + return b, err + } + if uintptr(len(b)) < sz { + return b, ErrShortBytes + } + b = b[sz:] + for asz > 0 { + b, err = Skip(b) + if err != nil { + return b, err + } + asz-- + } + return b, nil +} + +// returns (skip N bytes, skip M objects, error) +func getSize(b []byte) (uintptr, uintptr, error) { + l := len(b) + if l == 0 { + return 0, 0, ErrShortBytes + } + lead := b[0] + spec := &sizes[lead] // get type information + size, mode := spec.size, spec.extra + if size == 0 { + return 0, 0, InvalidPrefixError(lead) + } + if mode >= 0 { // fixed composites + return uintptr(size), uintptr(mode), nil + } + if l < int(size) { + return 0, 0, ErrShortBytes + } + switch mode { + case extra8: + return uintptr(size) + uintptr(b[1]), 0, nil + case extra16: + return uintptr(size) + uintptr(big.Uint16(b[1:])), 0, nil + case extra32: + return uintptr(size) + uintptr(big.Uint32(b[1:])), 0, nil + case map16v: + return uintptr(size), 2 * uintptr(big.Uint16(b[1:])), nil + case map32v: + return uintptr(size), 2 * uintptr(big.Uint32(b[1:])), nil + case array16v: + return uintptr(size), uintptr(big.Uint16(b[1:])), nil + case array32v: + return uintptr(size), uintptr(big.Uint32(b[1:])), nil + default: + return 0, 0, fatal + } +} diff --git a/vendor/github.com/tinylib/msgp/msgp/size.go b/vendor/github.com/tinylib/msgp/msgp/size.go new file mode 100644 index 00000000..ce2f8b16 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/size.go @@ -0,0 +1,38 @@ +package msgp + +// The sizes provided +// are the worst-case +// encoded sizes for +// each type. For variable- +// length types ([]byte, string), +// the total encoded size is +// the prefix size plus the +// length of the object. +const ( + Int64Size = 9 + IntSize = Int64Size + UintSize = Int64Size + Int8Size = 2 + Int16Size = 3 + Int32Size = 5 + Uint8Size = 2 + ByteSize = Uint8Size + Uint16Size = 3 + Uint32Size = 5 + Uint64Size = Int64Size + Float64Size = 9 + Float32Size = 5 + Complex64Size = 10 + Complex128Size = 18 + + TimeSize = 15 + BoolSize = 1 + NilSize = 1 + + MapHeaderSize = 5 + ArrayHeaderSize = 5 + + BytesPrefixSize = 5 + StringPrefixSize = 5 + ExtensionPrefixSize = 6 +) diff --git a/vendor/github.com/tinylib/msgp/msgp/unsafe.go b/vendor/github.com/tinylib/msgp/msgp/unsafe.go new file mode 100644 index 00000000..3978b6ff --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/unsafe.go @@ -0,0 +1,41 @@ +// +build !purego,!appengine + +package msgp + +import ( + "reflect" + "unsafe" +) + +// NOTE: +// all of the definition in this file +// should be repeated in appengine.go, +// but without using unsafe + +const ( + // spec says int and uint are always + // the same size, but that int/uint + // size may not be machine word size + smallint = unsafe.Sizeof(int(0)) == 4 +) + +// UnsafeString returns the byte slice as a volatile string +// THIS SHOULD ONLY BE USED BY THE CODE GENERATOR. +// THIS IS EVIL CODE. +// YOU HAVE BEEN WARNED. +func UnsafeString(b []byte) string { + sh := (*reflect.SliceHeader)(unsafe.Pointer(&b)) + return *(*string)(unsafe.Pointer(&reflect.StringHeader{Data: sh.Data, Len: sh.Len})) +} + +// UnsafeBytes returns the string as a byte slice +// THIS SHOULD ONLY BE USED BY THE CODE GENERATOR. +// THIS IS EVIL CODE. +// YOU HAVE BEEN WARNED. +func UnsafeBytes(s string) []byte { + return *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{ + Len: len(s), + Cap: len(s), + Data: (*(*reflect.StringHeader)(unsafe.Pointer(&s))).Data, + })) +} diff --git a/vendor/github.com/tinylib/msgp/msgp/write.go b/vendor/github.com/tinylib/msgp/msgp/write.go new file mode 100644 index 00000000..fb1947c5 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/write.go @@ -0,0 +1,845 @@ +package msgp + +import ( + "errors" + "fmt" + "io" + "math" + "reflect" + "sync" + "time" +) + +// Sizer is an interface implemented +// by types that can estimate their +// size when MessagePack encoded. +// This interface is optional, but +// encoding/marshaling implementations +// may use this as a way to pre-allocate +// memory for serialization. +type Sizer interface { + Msgsize() int +} + +var ( + // Nowhere is an io.Writer to nowhere + Nowhere io.Writer = nwhere{} + + btsType = reflect.TypeOf(([]byte)(nil)) + writerPool = sync.Pool{ + New: func() interface{} { + return &Writer{buf: make([]byte, 2048)} + }, + } +) + +func popWriter(w io.Writer) *Writer { + wr := writerPool.Get().(*Writer) + wr.Reset(w) + return wr +} + +func pushWriter(wr *Writer) { + wr.w = nil + wr.wloc = 0 + writerPool.Put(wr) +} + +// freeW frees a writer for use +// by other processes. It is not necessary +// to call freeW on a writer. However, maintaining +// a reference to a *Writer after calling freeW on +// it will cause undefined behavior. +func freeW(w *Writer) { pushWriter(w) } + +// Require ensures that cap(old)-len(old) >= extra. +func Require(old []byte, extra int) []byte { + l := len(old) + c := cap(old) + r := l + extra + if c >= r { + return old + } else if l == 0 { + return make([]byte, 0, extra) + } + // the new size is the greater + // of double the old capacity + // and the sum of the old length + // and the number of new bytes + // necessary. + c <<= 1 + if c < r { + c = r + } + n := make([]byte, l, c) + copy(n, old) + return n +} + +// nowhere writer +type nwhere struct{} + +func (n nwhere) Write(p []byte) (int, error) { return len(p), nil } + +// Marshaler is the interface implemented +// by types that know how to marshal themselves +// as MessagePack. MarshalMsg appends the marshalled +// form of the object to the provided +// byte slice, returning the extended +// slice and any errors encountered. +type Marshaler interface { + MarshalMsg([]byte) ([]byte, error) +} + +// Encodable is the interface implemented +// by types that know how to write themselves +// as MessagePack using a *msgp.Writer. +type Encodable interface { + EncodeMsg(*Writer) error +} + +// Writer is a buffered writer +// that can be used to write +// MessagePack objects to an io.Writer. +// You must call *Writer.Flush() in order +// to flush all of the buffered data +// to the underlying writer. +type Writer struct { + w io.Writer + buf []byte + wloc int +} + +// NewWriter returns a new *Writer. +func NewWriter(w io.Writer) *Writer { + if wr, ok := w.(*Writer); ok { + return wr + } + return popWriter(w) +} + +// NewWriterSize returns a writer with a custom buffer size. +func NewWriterSize(w io.Writer, sz int) *Writer { + // we must be able to require() 18 + // contiguous bytes, so that is the + // practical minimum buffer size + if sz < 18 { + sz = 18 + } + + return &Writer{ + w: w, + buf: make([]byte, sz), + } +} + +// Encode encodes an Encodable to an io.Writer. +func Encode(w io.Writer, e Encodable) error { + wr := NewWriter(w) + err := e.EncodeMsg(wr) + if err == nil { + err = wr.Flush() + } + freeW(wr) + return err +} + +func (mw *Writer) flush() error { + if mw.wloc == 0 { + return nil + } + n, err := mw.w.Write(mw.buf[:mw.wloc]) + if err != nil { + if n > 0 { + mw.wloc = copy(mw.buf, mw.buf[n:mw.wloc]) + } + return err + } + mw.wloc = 0 + return nil +} + +// Flush flushes all of the buffered +// data to the underlying writer. +func (mw *Writer) Flush() error { return mw.flush() } + +// Buffered returns the number bytes in the write buffer +func (mw *Writer) Buffered() int { return len(mw.buf) - mw.wloc } + +func (mw *Writer) avail() int { return len(mw.buf) - mw.wloc } + +func (mw *Writer) bufsize() int { return len(mw.buf) } + +// NOTE: this should only be called with +// a number that is guaranteed to be less than +// len(mw.buf). typically, it is called with a constant. +// +// NOTE: this is a hot code path +func (mw *Writer) require(n int) (int, error) { + c := len(mw.buf) + wl := mw.wloc + if c-wl < n { + if err := mw.flush(); err != nil { + return 0, err + } + wl = mw.wloc + } + mw.wloc += n + return wl, nil +} + +func (mw *Writer) Append(b ...byte) error { + if mw.avail() < len(b) { + err := mw.flush() + if err != nil { + return err + } + } + mw.wloc += copy(mw.buf[mw.wloc:], b) + return nil +} + +// push one byte onto the buffer +// +// NOTE: this is a hot code path +func (mw *Writer) push(b byte) error { + if mw.wloc == len(mw.buf) { + if err := mw.flush(); err != nil { + return err + } + } + mw.buf[mw.wloc] = b + mw.wloc++ + return nil +} + +func (mw *Writer) prefix8(b byte, u uint8) error { + const need = 2 + if len(mw.buf)-mw.wloc < need { + if err := mw.flush(); err != nil { + return err + } + } + prefixu8(mw.buf[mw.wloc:], b, u) + mw.wloc += need + return nil +} + +func (mw *Writer) prefix16(b byte, u uint16) error { + const need = 3 + if len(mw.buf)-mw.wloc < need { + if err := mw.flush(); err != nil { + return err + } + } + prefixu16(mw.buf[mw.wloc:], b, u) + mw.wloc += need + return nil +} + +func (mw *Writer) prefix32(b byte, u uint32) error { + const need = 5 + if len(mw.buf)-mw.wloc < need { + if err := mw.flush(); err != nil { + return err + } + } + prefixu32(mw.buf[mw.wloc:], b, u) + mw.wloc += need + return nil +} + +func (mw *Writer) prefix64(b byte, u uint64) error { + const need = 9 + if len(mw.buf)-mw.wloc < need { + if err := mw.flush(); err != nil { + return err + } + } + prefixu64(mw.buf[mw.wloc:], b, u) + mw.wloc += need + return nil +} + +// Write implements io.Writer, and writes +// data directly to the buffer. +func (mw *Writer) Write(p []byte) (int, error) { + l := len(p) + if mw.avail() < l { + if err := mw.flush(); err != nil { + return 0, err + } + if l > len(mw.buf) { + return mw.w.Write(p) + } + } + mw.wloc += copy(mw.buf[mw.wloc:], p) + return l, nil +} + +// implements io.WriteString +func (mw *Writer) writeString(s string) error { + l := len(s) + if mw.avail() < l { + if err := mw.flush(); err != nil { + return err + } + if l > len(mw.buf) { + _, err := io.WriteString(mw.w, s) + return err + } + } + mw.wloc += copy(mw.buf[mw.wloc:], s) + return nil +} + +// Reset changes the underlying writer used by the Writer +func (mw *Writer) Reset(w io.Writer) { + mw.buf = mw.buf[:cap(mw.buf)] + mw.w = w + mw.wloc = 0 +} + +// WriteMapHeader writes a map header of the given +// size to the writer +func (mw *Writer) WriteMapHeader(sz uint32) error { + switch { + case sz <= 15: + return mw.push(wfixmap(uint8(sz))) + case sz <= math.MaxUint16: + return mw.prefix16(mmap16, uint16(sz)) + default: + return mw.prefix32(mmap32, sz) + } +} + +// WriteArrayHeader writes an array header of the +// given size to the writer +func (mw *Writer) WriteArrayHeader(sz uint32) error { + switch { + case sz <= 15: + return mw.push(wfixarray(uint8(sz))) + case sz <= math.MaxUint16: + return mw.prefix16(marray16, uint16(sz)) + default: + return mw.prefix32(marray32, sz) + } +} + +// WriteNil writes a nil byte to the buffer +func (mw *Writer) WriteNil() error { + return mw.push(mnil) +} + +// WriteFloat64 writes a float64 to the writer +func (mw *Writer) WriteFloat64(f float64) error { + return mw.prefix64(mfloat64, math.Float64bits(f)) +} + +// WriteFloat32 writes a float32 to the writer +func (mw *Writer) WriteFloat32(f float32) error { + return mw.prefix32(mfloat32, math.Float32bits(f)) +} + +// WriteInt64 writes an int64 to the writer +func (mw *Writer) WriteInt64(i int64) error { + if i >= 0 { + switch { + case i <= math.MaxInt8: + return mw.push(wfixint(uint8(i))) + case i <= math.MaxInt16: + return mw.prefix16(mint16, uint16(i)) + case i <= math.MaxInt32: + return mw.prefix32(mint32, uint32(i)) + default: + return mw.prefix64(mint64, uint64(i)) + } + } + switch { + case i >= -32: + return mw.push(wnfixint(int8(i))) + case i >= math.MinInt8: + return mw.prefix8(mint8, uint8(i)) + case i >= math.MinInt16: + return mw.prefix16(mint16, uint16(i)) + case i >= math.MinInt32: + return mw.prefix32(mint32, uint32(i)) + default: + return mw.prefix64(mint64, uint64(i)) + } +} + +// WriteInt8 writes an int8 to the writer +func (mw *Writer) WriteInt8(i int8) error { return mw.WriteInt64(int64(i)) } + +// WriteInt16 writes an int16 to the writer +func (mw *Writer) WriteInt16(i int16) error { return mw.WriteInt64(int64(i)) } + +// WriteInt32 writes an int32 to the writer +func (mw *Writer) WriteInt32(i int32) error { return mw.WriteInt64(int64(i)) } + +// WriteInt writes an int to the writer +func (mw *Writer) WriteInt(i int) error { return mw.WriteInt64(int64(i)) } + +// WriteUint64 writes a uint64 to the writer +func (mw *Writer) WriteUint64(u uint64) error { + switch { + case u <= (1<<7)-1: + return mw.push(wfixint(uint8(u))) + case u <= math.MaxUint8: + return mw.prefix8(muint8, uint8(u)) + case u <= math.MaxUint16: + return mw.prefix16(muint16, uint16(u)) + case u <= math.MaxUint32: + return mw.prefix32(muint32, uint32(u)) + default: + return mw.prefix64(muint64, u) + } +} + +// WriteByte is analogous to WriteUint8 +func (mw *Writer) WriteByte(u byte) error { return mw.WriteUint8(uint8(u)) } + +// WriteUint8 writes a uint8 to the writer +func (mw *Writer) WriteUint8(u uint8) error { return mw.WriteUint64(uint64(u)) } + +// WriteUint16 writes a uint16 to the writer +func (mw *Writer) WriteUint16(u uint16) error { return mw.WriteUint64(uint64(u)) } + +// WriteUint32 writes a uint32 to the writer +func (mw *Writer) WriteUint32(u uint32) error { return mw.WriteUint64(uint64(u)) } + +// WriteUint writes a uint to the writer +func (mw *Writer) WriteUint(u uint) error { return mw.WriteUint64(uint64(u)) } + +// WriteBytes writes binary as 'bin' to the writer +func (mw *Writer) WriteBytes(b []byte) error { + sz := uint32(len(b)) + var err error + switch { + case sz <= math.MaxUint8: + err = mw.prefix8(mbin8, uint8(sz)) + case sz <= math.MaxUint16: + err = mw.prefix16(mbin16, uint16(sz)) + default: + err = mw.prefix32(mbin32, sz) + } + if err != nil { + return err + } + _, err = mw.Write(b) + return err +} + +// WriteBytesHeader writes just the size header +// of a MessagePack 'bin' object. The user is responsible +// for then writing 'sz' more bytes into the stream. +func (mw *Writer) WriteBytesHeader(sz uint32) error { + switch { + case sz <= math.MaxUint8: + return mw.prefix8(mbin8, uint8(sz)) + case sz <= math.MaxUint16: + return mw.prefix16(mbin16, uint16(sz)) + default: + return mw.prefix32(mbin32, sz) + } +} + +// WriteBool writes a bool to the writer +func (mw *Writer) WriteBool(b bool) error { + if b { + return mw.push(mtrue) + } + return mw.push(mfalse) +} + +// WriteString writes a messagepack string to the writer. +// (This is NOT an implementation of io.StringWriter) +func (mw *Writer) WriteString(s string) error { + sz := uint32(len(s)) + var err error + switch { + case sz <= 31: + err = mw.push(wfixstr(uint8(sz))) + case sz <= math.MaxUint8: + err = mw.prefix8(mstr8, uint8(sz)) + case sz <= math.MaxUint16: + err = mw.prefix16(mstr16, uint16(sz)) + default: + err = mw.prefix32(mstr32, sz) + } + if err != nil { + return err + } + return mw.writeString(s) +} + +// WriteStringHeader writes just the string size +// header of a MessagePack 'str' object. The user +// is responsible for writing 'sz' more valid UTF-8 +// bytes to the stream. +func (mw *Writer) WriteStringHeader(sz uint32) error { + switch { + case sz <= 31: + return mw.push(wfixstr(uint8(sz))) + case sz <= math.MaxUint8: + return mw.prefix8(mstr8, uint8(sz)) + case sz <= math.MaxUint16: + return mw.prefix16(mstr16, uint16(sz)) + default: + return mw.prefix32(mstr32, sz) + } +} + +// WriteStringFromBytes writes a 'str' object +// from a []byte. +func (mw *Writer) WriteStringFromBytes(str []byte) error { + sz := uint32(len(str)) + var err error + switch { + case sz <= 31: + err = mw.push(wfixstr(uint8(sz))) + case sz <= math.MaxUint8: + err = mw.prefix8(mstr8, uint8(sz)) + case sz <= math.MaxUint16: + err = mw.prefix16(mstr16, uint16(sz)) + default: + err = mw.prefix32(mstr32, sz) + } + if err != nil { + return err + } + _, err = mw.Write(str) + return err +} + +// WriteComplex64 writes a complex64 to the writer +func (mw *Writer) WriteComplex64(f complex64) error { + o, err := mw.require(10) + if err != nil { + return err + } + mw.buf[o] = mfixext8 + mw.buf[o+1] = Complex64Extension + big.PutUint32(mw.buf[o+2:], math.Float32bits(real(f))) + big.PutUint32(mw.buf[o+6:], math.Float32bits(imag(f))) + return nil +} + +// WriteComplex128 writes a complex128 to the writer +func (mw *Writer) WriteComplex128(f complex128) error { + o, err := mw.require(18) + if err != nil { + return err + } + mw.buf[o] = mfixext16 + mw.buf[o+1] = Complex128Extension + big.PutUint64(mw.buf[o+2:], math.Float64bits(real(f))) + big.PutUint64(mw.buf[o+10:], math.Float64bits(imag(f))) + return nil +} + +// WriteMapStrStr writes a map[string]string to the writer +func (mw *Writer) WriteMapStrStr(mp map[string]string) (err error) { + err = mw.WriteMapHeader(uint32(len(mp))) + if err != nil { + return + } + for key, val := range mp { + err = mw.WriteString(key) + if err != nil { + return + } + err = mw.WriteString(val) + if err != nil { + return + } + } + return nil +} + +// WriteMapStrIntf writes a map[string]interface to the writer +func (mw *Writer) WriteMapStrIntf(mp map[string]interface{}) (err error) { + err = mw.WriteMapHeader(uint32(len(mp))) + if err != nil { + return + } + for key, val := range mp { + err = mw.WriteString(key) + if err != nil { + return + } + err = mw.WriteIntf(val) + if err != nil { + return + } + } + return +} + +// WriteTime writes a time.Time object to the wire. +// +// Time is encoded as Unix time, which means that +// location (time zone) data is removed from the object. +// The encoded object itself is 12 bytes: 8 bytes for +// a big-endian 64-bit integer denoting seconds +// elapsed since "zero" Unix time, followed by 4 bytes +// for a big-endian 32-bit signed integer denoting +// the nanosecond offset of the time. This encoding +// is intended to ease portability across languages. +// (Note that this is *not* the standard time.Time +// binary encoding, because its implementation relies +// heavily on the internal representation used by the +// time package.) +func (mw *Writer) WriteTime(t time.Time) error { + t = t.UTC() + o, err := mw.require(15) + if err != nil { + return err + } + mw.buf[o] = mext8 + mw.buf[o+1] = 12 + mw.buf[o+2] = TimeExtension + putUnix(mw.buf[o+3:], t.Unix(), int32(t.Nanosecond())) + return nil +} + +// WriteIntf writes the concrete type of 'v'. +// WriteIntf will error if 'v' is not one of the following: +// - A bool, float, string, []byte, int, uint, or complex +// - A map of supported types (with string keys) +// - An array or slice of supported types +// - A pointer to a supported type +// - A type that satisfies the msgp.Encodable interface +// - A type that satisfies the msgp.Extension interface +func (mw *Writer) WriteIntf(v interface{}) error { + if v == nil { + return mw.WriteNil() + } + switch v := v.(type) { + + // preferred interfaces + + case Encodable: + return v.EncodeMsg(mw) + case Extension: + return mw.WriteExtension(v) + + // concrete types + + case bool: + return mw.WriteBool(v) + case float32: + return mw.WriteFloat32(v) + case float64: + return mw.WriteFloat64(v) + case complex64: + return mw.WriteComplex64(v) + case complex128: + return mw.WriteComplex128(v) + case uint8: + return mw.WriteUint8(v) + case uint16: + return mw.WriteUint16(v) + case uint32: + return mw.WriteUint32(v) + case uint64: + return mw.WriteUint64(v) + case uint: + return mw.WriteUint(v) + case int8: + return mw.WriteInt8(v) + case int16: + return mw.WriteInt16(v) + case int32: + return mw.WriteInt32(v) + case int64: + return mw.WriteInt64(v) + case int: + return mw.WriteInt(v) + case string: + return mw.WriteString(v) + case []byte: + return mw.WriteBytes(v) + case map[string]string: + return mw.WriteMapStrStr(v) + case map[string]interface{}: + return mw.WriteMapStrIntf(v) + case time.Time: + return mw.WriteTime(v) + } + + val := reflect.ValueOf(v) + if !isSupported(val.Kind()) || !val.IsValid() { + return fmt.Errorf("msgp: type %s not supported", val) + } + + switch val.Kind() { + case reflect.Ptr: + if val.IsNil() { + return mw.WriteNil() + } + return mw.WriteIntf(val.Elem().Interface()) + case reflect.Slice: + return mw.writeSlice(val) + case reflect.Map: + return mw.writeMap(val) + } + return &ErrUnsupportedType{T: val.Type()} +} + +func (mw *Writer) writeMap(v reflect.Value) (err error) { + if v.Type().Key().Kind() != reflect.String { + return errors.New("msgp: map keys must be strings") + } + ks := v.MapKeys() + err = mw.WriteMapHeader(uint32(len(ks))) + if err != nil { + return + } + for _, key := range ks { + val := v.MapIndex(key) + err = mw.WriteString(key.String()) + if err != nil { + return + } + err = mw.WriteIntf(val.Interface()) + if err != nil { + return + } + } + return +} + +func (mw *Writer) writeSlice(v reflect.Value) (err error) { + // is []byte + if v.Type().ConvertibleTo(btsType) { + return mw.WriteBytes(v.Bytes()) + } + + sz := uint32(v.Len()) + err = mw.WriteArrayHeader(sz) + if err != nil { + return + } + for i := uint32(0); i < sz; i++ { + err = mw.WriteIntf(v.Index(int(i)).Interface()) + if err != nil { + return + } + } + return +} + +func (mw *Writer) writeStruct(v reflect.Value) error { + if enc, ok := v.Interface().(Encodable); ok { + return enc.EncodeMsg(mw) + } + return fmt.Errorf("msgp: unsupported type: %s", v.Type()) +} + +func (mw *Writer) writeVal(v reflect.Value) error { + if !isSupported(v.Kind()) { + return fmt.Errorf("msgp: msgp/enc: type %q not supported", v.Type()) + } + + // shortcut for nil values + if v.IsNil() { + return mw.WriteNil() + } + switch v.Kind() { + case reflect.Bool: + return mw.WriteBool(v.Bool()) + + case reflect.Float32, reflect.Float64: + return mw.WriteFloat64(v.Float()) + + case reflect.Complex64, reflect.Complex128: + return mw.WriteComplex128(v.Complex()) + + case reflect.Int, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int8: + return mw.WriteInt64(v.Int()) + + case reflect.Interface, reflect.Ptr: + if v.IsNil() { + mw.WriteNil() + } + return mw.writeVal(v.Elem()) + + case reflect.Map: + return mw.writeMap(v) + + case reflect.Uint, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint8: + return mw.WriteUint64(v.Uint()) + + case reflect.String: + return mw.WriteString(v.String()) + + case reflect.Slice, reflect.Array: + return mw.writeSlice(v) + + case reflect.Struct: + return mw.writeStruct(v) + + } + return fmt.Errorf("msgp: msgp/enc: type %q not supported", v.Type()) +} + +// is the reflect.Kind encodable? +func isSupported(k reflect.Kind) bool { + switch k { + case reflect.Func, reflect.Chan, reflect.Invalid, reflect.UnsafePointer: + return false + default: + return true + } +} + +// GuessSize guesses the size of the underlying +// value of 'i'. If the underlying value is not +// a simple builtin (or []byte), GuessSize defaults +// to 512. +func GuessSize(i interface{}) int { + if i == nil { + return NilSize + } + + switch i := i.(type) { + case Sizer: + return i.Msgsize() + case Extension: + return ExtensionPrefixSize + i.Len() + case float64: + return Float64Size + case float32: + return Float32Size + case uint8, uint16, uint32, uint64, uint: + return UintSize + case int8, int16, int32, int64, int: + return IntSize + case []byte: + return BytesPrefixSize + len(i) + case string: + return StringPrefixSize + len(i) + case complex64: + return Complex64Size + case complex128: + return Complex128Size + case bool: + return BoolSize + case map[string]interface{}: + s := MapHeaderSize + for key, val := range i { + s += StringPrefixSize + len(key) + GuessSize(val) + } + return s + case map[string]string: + s := MapHeaderSize + for key, val := range i { + s += 2*StringPrefixSize + len(key) + len(val) + } + return s + default: + return 512 + } +} diff --git a/vendor/github.com/tinylib/msgp/msgp/write_bytes.go b/vendor/github.com/tinylib/msgp/msgp/write_bytes.go new file mode 100644 index 00000000..eaa03c46 --- /dev/null +++ b/vendor/github.com/tinylib/msgp/msgp/write_bytes.go @@ -0,0 +1,411 @@ +package msgp + +import ( + "math" + "reflect" + "time" +) + +// ensure 'sz' extra bytes in 'b' btw len(b) and cap(b) +func ensure(b []byte, sz int) ([]byte, int) { + l := len(b) + c := cap(b) + if c-l < sz { + o := make([]byte, (2*c)+sz) // exponential growth + n := copy(o, b) + return o[:n+sz], n + } + return b[:l+sz], l +} + +// AppendMapHeader appends a map header with the +// given size to the slice +func AppendMapHeader(b []byte, sz uint32) []byte { + switch { + case sz <= 15: + return append(b, wfixmap(uint8(sz))) + + case sz <= math.MaxUint16: + o, n := ensure(b, 3) + prefixu16(o[n:], mmap16, uint16(sz)) + return o + + default: + o, n := ensure(b, 5) + prefixu32(o[n:], mmap32, sz) + return o + } +} + +// AppendArrayHeader appends an array header with +// the given size to the slice +func AppendArrayHeader(b []byte, sz uint32) []byte { + switch { + case sz <= 15: + return append(b, wfixarray(uint8(sz))) + + case sz <= math.MaxUint16: + o, n := ensure(b, 3) + prefixu16(o[n:], marray16, uint16(sz)) + return o + + default: + o, n := ensure(b, 5) + prefixu32(o[n:], marray32, sz) + return o + } +} + +// AppendNil appends a 'nil' byte to the slice +func AppendNil(b []byte) []byte { return append(b, mnil) } + +// AppendFloat64 appends a float64 to the slice +func AppendFloat64(b []byte, f float64) []byte { + o, n := ensure(b, Float64Size) + prefixu64(o[n:], mfloat64, math.Float64bits(f)) + return o +} + +// AppendFloat32 appends a float32 to the slice +func AppendFloat32(b []byte, f float32) []byte { + o, n := ensure(b, Float32Size) + prefixu32(o[n:], mfloat32, math.Float32bits(f)) + return o +} + +// AppendInt64 appends an int64 to the slice +func AppendInt64(b []byte, i int64) []byte { + if i >= 0 { + switch { + case i <= math.MaxInt8: + return append(b, wfixint(uint8(i))) + case i <= math.MaxInt16: + o, n := ensure(b, 3) + putMint16(o[n:], int16(i)) + return o + case i <= math.MaxInt32: + o, n := ensure(b, 5) + putMint32(o[n:], int32(i)) + return o + default: + o, n := ensure(b, 9) + putMint64(o[n:], i) + return o + } + } + switch { + case i >= -32: + return append(b, wnfixint(int8(i))) + case i >= math.MinInt8: + o, n := ensure(b, 2) + putMint8(o[n:], int8(i)) + return o + case i >= math.MinInt16: + o, n := ensure(b, 3) + putMint16(o[n:], int16(i)) + return o + case i >= math.MinInt32: + o, n := ensure(b, 5) + putMint32(o[n:], int32(i)) + return o + default: + o, n := ensure(b, 9) + putMint64(o[n:], i) + return o + } +} + +// AppendInt appends an int to the slice +func AppendInt(b []byte, i int) []byte { return AppendInt64(b, int64(i)) } + +// AppendInt8 appends an int8 to the slice +func AppendInt8(b []byte, i int8) []byte { return AppendInt64(b, int64(i)) } + +// AppendInt16 appends an int16 to the slice +func AppendInt16(b []byte, i int16) []byte { return AppendInt64(b, int64(i)) } + +// AppendInt32 appends an int32 to the slice +func AppendInt32(b []byte, i int32) []byte { return AppendInt64(b, int64(i)) } + +// AppendUint64 appends a uint64 to the slice +func AppendUint64(b []byte, u uint64) []byte { + switch { + case u <= (1<<7)-1: + return append(b, wfixint(uint8(u))) + + case u <= math.MaxUint8: + o, n := ensure(b, 2) + putMuint8(o[n:], uint8(u)) + return o + + case u <= math.MaxUint16: + o, n := ensure(b, 3) + putMuint16(o[n:], uint16(u)) + return o + + case u <= math.MaxUint32: + o, n := ensure(b, 5) + putMuint32(o[n:], uint32(u)) + return o + + default: + o, n := ensure(b, 9) + putMuint64(o[n:], u) + return o + + } +} + +// AppendUint appends a uint to the slice +func AppendUint(b []byte, u uint) []byte { return AppendUint64(b, uint64(u)) } + +// AppendUint8 appends a uint8 to the slice +func AppendUint8(b []byte, u uint8) []byte { return AppendUint64(b, uint64(u)) } + +// AppendByte is analogous to AppendUint8 +func AppendByte(b []byte, u byte) []byte { return AppendUint8(b, uint8(u)) } + +// AppendUint16 appends a uint16 to the slice +func AppendUint16(b []byte, u uint16) []byte { return AppendUint64(b, uint64(u)) } + +// AppendUint32 appends a uint32 to the slice +func AppendUint32(b []byte, u uint32) []byte { return AppendUint64(b, uint64(u)) } + +// AppendBytes appends bytes to the slice as MessagePack 'bin' data +func AppendBytes(b []byte, bts []byte) []byte { + sz := len(bts) + var o []byte + var n int + switch { + case sz <= math.MaxUint8: + o, n = ensure(b, 2+sz) + prefixu8(o[n:], mbin8, uint8(sz)) + n += 2 + case sz <= math.MaxUint16: + o, n = ensure(b, 3+sz) + prefixu16(o[n:], mbin16, uint16(sz)) + n += 3 + default: + o, n = ensure(b, 5+sz) + prefixu32(o[n:], mbin32, uint32(sz)) + n += 5 + } + return o[:n+copy(o[n:], bts)] +} + +// AppendBool appends a bool to the slice +func AppendBool(b []byte, t bool) []byte { + if t { + return append(b, mtrue) + } + return append(b, mfalse) +} + +// AppendString appends a string as a MessagePack 'str' to the slice +func AppendString(b []byte, s string) []byte { + sz := len(s) + var n int + var o []byte + switch { + case sz <= 31: + o, n = ensure(b, 1+sz) + o[n] = wfixstr(uint8(sz)) + n++ + case sz <= math.MaxUint8: + o, n = ensure(b, 2+sz) + prefixu8(o[n:], mstr8, uint8(sz)) + n += 2 + case sz <= math.MaxUint16: + o, n = ensure(b, 3+sz) + prefixu16(o[n:], mstr16, uint16(sz)) + n += 3 + default: + o, n = ensure(b, 5+sz) + prefixu32(o[n:], mstr32, uint32(sz)) + n += 5 + } + return o[:n+copy(o[n:], s)] +} + +// AppendStringFromBytes appends a []byte +// as a MessagePack 'str' to the slice 'b.' +func AppendStringFromBytes(b []byte, str []byte) []byte { + sz := len(str) + var n int + var o []byte + switch { + case sz <= 31: + o, n = ensure(b, 1+sz) + o[n] = wfixstr(uint8(sz)) + n++ + case sz <= math.MaxUint8: + o, n = ensure(b, 2+sz) + prefixu8(o[n:], mstr8, uint8(sz)) + n += 2 + case sz <= math.MaxUint16: + o, n = ensure(b, 3+sz) + prefixu16(o[n:], mstr16, uint16(sz)) + n += 3 + default: + o, n = ensure(b, 5+sz) + prefixu32(o[n:], mstr32, uint32(sz)) + n += 5 + } + return o[:n+copy(o[n:], str)] +} + +// AppendComplex64 appends a complex64 to the slice as a MessagePack extension +func AppendComplex64(b []byte, c complex64) []byte { + o, n := ensure(b, Complex64Size) + o[n] = mfixext8 + o[n+1] = Complex64Extension + big.PutUint32(o[n+2:], math.Float32bits(real(c))) + big.PutUint32(o[n+6:], math.Float32bits(imag(c))) + return o +} + +// AppendComplex128 appends a complex128 to the slice as a MessagePack extension +func AppendComplex128(b []byte, c complex128) []byte { + o, n := ensure(b, Complex128Size) + o[n] = mfixext16 + o[n+1] = Complex128Extension + big.PutUint64(o[n+2:], math.Float64bits(real(c))) + big.PutUint64(o[n+10:], math.Float64bits(imag(c))) + return o +} + +// AppendTime appends a time.Time to the slice as a MessagePack extension +func AppendTime(b []byte, t time.Time) []byte { + o, n := ensure(b, TimeSize) + t = t.UTC() + o[n] = mext8 + o[n+1] = 12 + o[n+2] = TimeExtension + putUnix(o[n+3:], t.Unix(), int32(t.Nanosecond())) + return o +} + +// AppendMapStrStr appends a map[string]string to the slice +// as a MessagePack map with 'str'-type keys and values +func AppendMapStrStr(b []byte, m map[string]string) []byte { + sz := uint32(len(m)) + b = AppendMapHeader(b, sz) + for key, val := range m { + b = AppendString(b, key) + b = AppendString(b, val) + } + return b +} + +// AppendMapStrIntf appends a map[string]interface{} to the slice +// as a MessagePack map with 'str'-type keys. +func AppendMapStrIntf(b []byte, m map[string]interface{}) ([]byte, error) { + sz := uint32(len(m)) + b = AppendMapHeader(b, sz) + var err error + for key, val := range m { + b = AppendString(b, key) + b, err = AppendIntf(b, val) + if err != nil { + return b, err + } + } + return b, nil +} + +// AppendIntf appends the concrete type of 'i' to the +// provided []byte. 'i' must be one of the following: +// - 'nil' +// - A bool, float, string, []byte, int, uint, or complex +// - A map[string]interface{} or map[string]string +// - A []T, where T is another supported type +// - A *T, where T is another supported type +// - A type that satisfieds the msgp.Marshaler interface +// - A type that satisfies the msgp.Extension interface +func AppendIntf(b []byte, i interface{}) ([]byte, error) { + if i == nil { + return AppendNil(b), nil + } + + // all the concrete types + // for which we have methods + switch i := i.(type) { + case Marshaler: + return i.MarshalMsg(b) + case Extension: + return AppendExtension(b, i) + case bool: + return AppendBool(b, i), nil + case float32: + return AppendFloat32(b, i), nil + case float64: + return AppendFloat64(b, i), nil + case complex64: + return AppendComplex64(b, i), nil + case complex128: + return AppendComplex128(b, i), nil + case string: + return AppendString(b, i), nil + case []byte: + return AppendBytes(b, i), nil + case int8: + return AppendInt8(b, i), nil + case int16: + return AppendInt16(b, i), nil + case int32: + return AppendInt32(b, i), nil + case int64: + return AppendInt64(b, i), nil + case int: + return AppendInt64(b, int64(i)), nil + case uint: + return AppendUint64(b, uint64(i)), nil + case uint8: + return AppendUint8(b, i), nil + case uint16: + return AppendUint16(b, i), nil + case uint32: + return AppendUint32(b, i), nil + case uint64: + return AppendUint64(b, i), nil + case time.Time: + return AppendTime(b, i), nil + case map[string]interface{}: + return AppendMapStrIntf(b, i) + case map[string]string: + return AppendMapStrStr(b, i), nil + case []interface{}: + b = AppendArrayHeader(b, uint32(len(i))) + var err error + for _, k := range i { + b, err = AppendIntf(b, k) + if err != nil { + return b, err + } + } + return b, nil + } + + var err error + v := reflect.ValueOf(i) + switch v.Kind() { + case reflect.Array, reflect.Slice: + l := v.Len() + b = AppendArrayHeader(b, uint32(l)) + for i := 0; i < l; i++ { + b, err = AppendIntf(b, v.Index(i).Interface()) + if err != nil { + return b, err + } + } + return b, nil + case reflect.Ptr: + if v.IsNil() { + return AppendNil(b), err + } + b, err = AppendIntf(b, v.Elem().Interface()) + return b, err + default: + return b, &ErrUnsupportedType{T: v.Type()} + } +} |