diff options
Diffstat (limited to 'vendor/github.com/aws/smithy-go/encoding/json')
7 files changed, 606 insertions, 0 deletions
diff --git a/vendor/github.com/aws/smithy-go/encoding/json/array.go b/vendor/github.com/aws/smithy-go/encoding/json/array.go new file mode 100644 index 0000000..7a232f6 --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/array.go @@ -0,0 +1,35 @@ +package json + +import ( + "bytes" +) + +// Array represents the encoding of a JSON Array +type Array struct { + w *bytes.Buffer + writeComma bool + scratch *[]byte +} + +func newArray(w *bytes.Buffer, scratch *[]byte) *Array { + w.WriteRune(leftBracket) + return &Array{w: w, scratch: scratch} +} + +// Value adds a new element to the JSON Array. +// Returns a Value type that is used to encode +// the array element. +func (a *Array) Value() Value { + if a.writeComma { + a.w.WriteRune(comma) + } else { + a.writeComma = true + } + + return newValue(a.w, a.scratch) +} + +// Close encodes the end of the JSON Array +func (a *Array) Close() { + a.w.WriteRune(rightBracket) +} diff --git a/vendor/github.com/aws/smithy-go/encoding/json/constants.go b/vendor/github.com/aws/smithy-go/encoding/json/constants.go new file mode 100644 index 0000000..9104409 --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/constants.go @@ -0,0 +1,15 @@ +package json + +const ( + leftBrace = '{' + rightBrace = '}' + + leftBracket = '[' + rightBracket = ']' + + comma = ',' + quote = '"' + colon = ':' + + null = "null" +) diff --git a/vendor/github.com/aws/smithy-go/encoding/json/decoder_util.go b/vendor/github.com/aws/smithy-go/encoding/json/decoder_util.go new file mode 100644 index 0000000..7050c85 --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/decoder_util.go @@ -0,0 +1,139 @@ +package json + +import ( + "bytes" + "encoding/json" + "fmt" + "io" +) + +// DiscardUnknownField discards unknown fields from a decoder body. +// This function is useful while deserializing a JSON body with additional +// unknown information that should be discarded. +func DiscardUnknownField(decoder *json.Decoder) error { + // This deliberately does not share logic with CollectUnknownField, even + // though it could, because if we were to delegate to that then we'd incur + // extra allocations and general memory usage. + v, err := decoder.Token() + if err == io.EOF { + return nil + } + if err != nil { + return err + } + + if _, ok := v.(json.Delim); ok { + for decoder.More() { + err = DiscardUnknownField(decoder) + } + endToken, err := decoder.Token() + if err != nil { + return err + } + if _, ok := endToken.(json.Delim); !ok { + return fmt.Errorf("invalid JSON : expected json delimiter, found %T %v", + endToken, endToken) + } + } + + return nil +} + +// CollectUnknownField grabs the contents of unknown fields from the decoder body +// and returns them as a byte slice. This is useful for skipping unknown fields without +// completely discarding them. +func CollectUnknownField(decoder *json.Decoder) ([]byte, error) { + result, err := collectUnknownField(decoder) + if err != nil { + return nil, err + } + + buff := bytes.NewBuffer(nil) + encoder := json.NewEncoder(buff) + + if err := encoder.Encode(result); err != nil { + return nil, err + } + + return buff.Bytes(), nil +} + +func collectUnknownField(decoder *json.Decoder) (interface{}, error) { + // Grab the initial value. This could either be a concrete value like a string or a a + // delimiter. + token, err := decoder.Token() + if err == io.EOF { + return nil, nil + } + if err != nil { + return nil, err + } + + // If it's an array or object, we'll need to recurse. + delim, ok := token.(json.Delim) + if ok { + var result interface{} + if delim == '{' { + result, err = collectUnknownObject(decoder) + if err != nil { + return nil, err + } + } else { + result, err = collectUnknownArray(decoder) + if err != nil { + return nil, err + } + } + + // Discard the closing token. decoder.Token handles checking for matching delimiters + if _, err := decoder.Token(); err != nil { + return nil, err + } + return result, nil + } + + return token, nil +} + +func collectUnknownArray(decoder *json.Decoder) ([]interface{}, error) { + // We need to create an empty array here instead of a nil array, since by getting + // into this function at all we necessarily have seen a non-nil list. + array := []interface{}{} + + for decoder.More() { + value, err := collectUnknownField(decoder) + if err != nil { + return nil, err + } + array = append(array, value) + } + + return array, nil +} + +func collectUnknownObject(decoder *json.Decoder) (map[string]interface{}, error) { + object := make(map[string]interface{}) + + for decoder.More() { + key, err := collectUnknownField(decoder) + if err != nil { + return nil, err + } + + // Keys have to be strings, which is particularly important as the encoder + // won't except a map with interface{} keys + stringKey, ok := key.(string) + if !ok { + return nil, fmt.Errorf("expected string key, found %T", key) + } + + value, err := collectUnknownField(decoder) + if err != nil { + return nil, err + } + + object[stringKey] = value + } + + return object, nil +} diff --git a/vendor/github.com/aws/smithy-go/encoding/json/encoder.go b/vendor/github.com/aws/smithy-go/encoding/json/encoder.go new file mode 100644 index 0000000..8772953 --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/encoder.go @@ -0,0 +1,30 @@ +package json + +import ( + "bytes" +) + +// Encoder is JSON encoder that supports construction of JSON values +// using methods. +type Encoder struct { + w *bytes.Buffer + Value +} + +// NewEncoder returns a new JSON encoder +func NewEncoder() *Encoder { + writer := bytes.NewBuffer(nil) + scratch := make([]byte, 64) + + return &Encoder{w: writer, Value: newValue(writer, &scratch)} +} + +// String returns the String output of the JSON encoder +func (e Encoder) String() string { + return e.w.String() +} + +// Bytes returns the []byte slice of the JSON encoder +func (e Encoder) Bytes() []byte { + return e.w.Bytes() +} diff --git a/vendor/github.com/aws/smithy-go/encoding/json/escape.go b/vendor/github.com/aws/smithy-go/encoding/json/escape.go new file mode 100644 index 0000000..d984d0c --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/escape.go @@ -0,0 +1,198 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Copied and modified from Go 1.8 stdlib's encoding/json/#safeSet + +package json + +import ( + "bytes" + "unicode/utf8" +) + +// safeSet holds the value true if the ASCII character with the given array +// position can be represented inside a JSON string without any further +// escaping. +// +// All values are true except for the ASCII control characters (0-31), the +// double quote ("), and the backslash character ("\"). +var safeSet = [utf8.RuneSelf]bool{ + ' ': true, + '!': true, + '"': false, + '#': true, + '$': true, + '%': true, + '&': true, + '\'': true, + '(': true, + ')': true, + '*': true, + '+': true, + ',': true, + '-': true, + '.': true, + '/': true, + '0': true, + '1': true, + '2': true, + '3': true, + '4': true, + '5': true, + '6': true, + '7': true, + '8': true, + '9': true, + ':': true, + ';': true, + '<': true, + '=': true, + '>': true, + '?': true, + '@': true, + 'A': true, + 'B': true, + 'C': true, + 'D': true, + 'E': true, + 'F': true, + 'G': true, + 'H': true, + 'I': true, + 'J': true, + 'K': true, + 'L': true, + 'M': true, + 'N': true, + 'O': true, + 'P': true, + 'Q': true, + 'R': true, + 'S': true, + 'T': true, + 'U': true, + 'V': true, + 'W': true, + 'X': true, + 'Y': true, + 'Z': true, + '[': true, + '\\': false, + ']': true, + '^': true, + '_': true, + '`': true, + 'a': true, + 'b': true, + 'c': true, + 'd': true, + 'e': true, + 'f': true, + 'g': true, + 'h': true, + 'i': true, + 'j': true, + 'k': true, + 'l': true, + 'm': true, + 'n': true, + 'o': true, + 'p': true, + 'q': true, + 'r': true, + 's': true, + 't': true, + 'u': true, + 'v': true, + 'w': true, + 'x': true, + 'y': true, + 'z': true, + '{': true, + '|': true, + '}': true, + '~': true, + '\u007f': true, +} + +// copied from Go 1.8 stdlib's encoding/json/#hex +var hex = "0123456789abcdef" + +// escapeStringBytes escapes and writes the passed in string bytes to the dst +// buffer +// +// Copied and modifed from Go 1.8 stdlib's encodeing/json/#encodeState.stringBytes +func escapeStringBytes(e *bytes.Buffer, s []byte) { + e.WriteByte('"') + start := 0 + for i := 0; i < len(s); { + if b := s[i]; b < utf8.RuneSelf { + if safeSet[b] { + i++ + continue + } + if start < i { + e.Write(s[start:i]) + } + switch b { + case '\\', '"': + e.WriteByte('\\') + e.WriteByte(b) + case '\n': + e.WriteByte('\\') + e.WriteByte('n') + case '\r': + e.WriteByte('\\') + e.WriteByte('r') + case '\t': + e.WriteByte('\\') + e.WriteByte('t') + default: + // This encodes bytes < 0x20 except for \t, \n and \r. + // If escapeHTML is set, it also escapes <, >, and & + // because they can lead to security holes when + // user-controlled strings are rendered into JSON + // and served to some browsers. + e.WriteString(`\u00`) + e.WriteByte(hex[b>>4]) + e.WriteByte(hex[b&0xF]) + } + i++ + start = i + continue + } + c, size := utf8.DecodeRune(s[i:]) + if c == utf8.RuneError && size == 1 { + if start < i { + e.Write(s[start:i]) + } + e.WriteString(`\ufffd`) + 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 { + e.Write(s[start:i]) + } + e.WriteString(`\u202`) + e.WriteByte(hex[c&0xF]) + i += size + start = i + continue + } + i += size + } + if start < len(s) { + e.Write(s[start:]) + } + e.WriteByte('"') +} diff --git a/vendor/github.com/aws/smithy-go/encoding/json/object.go b/vendor/github.com/aws/smithy-go/encoding/json/object.go new file mode 100644 index 0000000..722346d --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/object.go @@ -0,0 +1,40 @@ +package json + +import ( + "bytes" +) + +// Object represents the encoding of a JSON Object type +type Object struct { + w *bytes.Buffer + writeComma bool + scratch *[]byte +} + +func newObject(w *bytes.Buffer, scratch *[]byte) *Object { + w.WriteRune(leftBrace) + return &Object{w: w, scratch: scratch} +} + +func (o *Object) writeKey(key string) { + escapeStringBytes(o.w, []byte(key)) + o.w.WriteRune(colon) +} + +// Key adds the given named key to the JSON object. +// Returns a Value encoder that should be used to encode +// a JSON value type. +func (o *Object) Key(name string) Value { + if o.writeComma { + o.w.WriteRune(comma) + } else { + o.writeComma = true + } + o.writeKey(name) + return newValue(o.w, o.scratch) +} + +// Close encodes the end of the JSON Object +func (o *Object) Close() { + o.w.WriteRune(rightBrace) +} diff --git a/vendor/github.com/aws/smithy-go/encoding/json/value.go b/vendor/github.com/aws/smithy-go/encoding/json/value.go new file mode 100644 index 0000000..b41ff1e --- /dev/null +++ b/vendor/github.com/aws/smithy-go/encoding/json/value.go @@ -0,0 +1,149 @@ +package json + +import ( + "bytes" + "encoding/base64" + "math/big" + "strconv" + + "github.com/aws/smithy-go/encoding" +) + +// Value represents a JSON Value type +// JSON Value types: Object, Array, String, Number, Boolean, and Null +type Value struct { + w *bytes.Buffer + scratch *[]byte +} + +// newValue returns a new Value encoder +func newValue(w *bytes.Buffer, scratch *[]byte) Value { + return Value{w: w, scratch: scratch} +} + +// String encodes v as a JSON string +func (jv Value) String(v string) { + escapeStringBytes(jv.w, []byte(v)) +} + +// Byte encodes v as a JSON number +func (jv Value) Byte(v int8) { + jv.Long(int64(v)) +} + +// Short encodes v as a JSON number +func (jv Value) Short(v int16) { + jv.Long(int64(v)) +} + +// Integer encodes v as a JSON number +func (jv Value) Integer(v int32) { + jv.Long(int64(v)) +} + +// Long encodes v as a JSON number +func (jv Value) Long(v int64) { + *jv.scratch = strconv.AppendInt((*jv.scratch)[:0], v, 10) + jv.w.Write(*jv.scratch) +} + +// ULong encodes v as a JSON number +func (jv Value) ULong(v uint64) { + *jv.scratch = strconv.AppendUint((*jv.scratch)[:0], v, 10) + jv.w.Write(*jv.scratch) +} + +// Float encodes v as a JSON number +func (jv Value) Float(v float32) { + jv.float(float64(v), 32) +} + +// Double encodes v as a JSON number +func (jv Value) Double(v float64) { + jv.float(v, 64) +} + +func (jv Value) float(v float64, bits int) { + *jv.scratch = encoding.EncodeFloat((*jv.scratch)[:0], v, bits) + jv.w.Write(*jv.scratch) +} + +// Boolean encodes v as a JSON boolean +func (jv Value) Boolean(v bool) { + *jv.scratch = strconv.AppendBool((*jv.scratch)[:0], v) + jv.w.Write(*jv.scratch) +} + +// Base64EncodeBytes writes v as a base64 value in JSON string +func (jv Value) Base64EncodeBytes(v []byte) { + encodeByteSlice(jv.w, (*jv.scratch)[:0], v) +} + +// Write writes v directly to the JSON document +func (jv Value) Write(v []byte) { + jv.w.Write(v) +} + +// Array returns a new Array encoder +func (jv Value) Array() *Array { + return newArray(jv.w, jv.scratch) +} + +// Object returns a new Object encoder +func (jv Value) Object() *Object { + return newObject(jv.w, jv.scratch) +} + +// Null encodes a null JSON value +func (jv Value) Null() { + jv.w.WriteString(null) +} + +// BigInteger encodes v as JSON value +func (jv Value) BigInteger(v *big.Int) { + jv.w.Write([]byte(v.Text(10))) +} + +// BigDecimal encodes v as JSON value +func (jv Value) BigDecimal(v *big.Float) { + if i, accuracy := v.Int64(); accuracy == big.Exact { + jv.Long(i) + return + } + // TODO: Should this try to match ES6 ToString similar to stdlib JSON? + jv.w.Write([]byte(v.Text('e', -1))) +} + +// Based on encoding/json encodeByteSlice from the Go Standard Library +// https://golang.org/src/encoding/json/encode.go +func encodeByteSlice(w *bytes.Buffer, scratch []byte, v []byte) { + if v == nil { + w.WriteString(null) + return + } + + w.WriteRune(quote) + + encodedLen := base64.StdEncoding.EncodedLen(len(v)) + if encodedLen <= len(scratch) { + // If the encoded bytes fit in e.scratch, avoid an extra + // allocation and use the cheaper Encoding.Encode. + dst := scratch[:encodedLen] + base64.StdEncoding.Encode(dst, v) + w.Write(dst) + } else if encodedLen <= 1024 { + // The encoded bytes are short enough to allocate for, and + // Encoding.Encode is still cheaper. + dst := make([]byte, encodedLen) + base64.StdEncoding.Encode(dst, v) + w.Write(dst) + } else { + // The encoded bytes are too long to cheaply allocate, and + // Encoding.Encode is no longer noticeably cheaper. + enc := base64.NewEncoder(base64.StdEncoding, w) + enc.Write(v) + enc.Close() + } + + w.WriteRune(quote) +} |