From 6d8f122a5160f6d9e4c51579f2429dfaa62c7271 Mon Sep 17 00:00:00 2001 From: Christopher Speller Date: Fri, 16 Feb 2018 06:47:51 -0800 Subject: Upgrading server dependancies (#8308) --- vendor/gopkg.in/square/go-jose.v1/json/decode.go | 1183 ---------------------- 1 file changed, 1183 deletions(-) delete mode 100644 vendor/gopkg.in/square/go-jose.v1/json/decode.go (limited to 'vendor/gopkg.in/square/go-jose.v1/json/decode.go') diff --git a/vendor/gopkg.in/square/go-jose.v1/json/decode.go b/vendor/gopkg.in/square/go-jose.v1/json/decode.go deleted file mode 100644 index 37457e5a8..000000000 --- a/vendor/gopkg.in/square/go-jose.v1/json/decode.go +++ /dev/null @@ -1,1183 +0,0 @@ -// Copyright 2010 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. - -// Represents JSON data structure using native Go types: booleans, floats, -// strings, arrays, and maps. - -package json - -import ( - "bytes" - "encoding" - "encoding/base64" - "errors" - "fmt" - "reflect" - "runtime" - "strconv" - "unicode" - "unicode/utf16" - "unicode/utf8" -) - -// Unmarshal parses the JSON-encoded data and stores the result -// in the value pointed to by v. -// -// Unmarshal uses the inverse of the encodings that -// Marshal uses, allocating maps, slices, and pointers as necessary, -// with the following additional rules: -// -// To unmarshal JSON into a pointer, Unmarshal first handles the case of -// the JSON being the JSON literal null. In that case, Unmarshal sets -// the pointer to nil. Otherwise, Unmarshal unmarshals the JSON into -// the value pointed at by the pointer. If the pointer is nil, Unmarshal -// allocates a new value for it to point to. -// -// To unmarshal JSON into a struct, Unmarshal matches incoming object -// keys to the keys used by Marshal (either the struct field name or its tag), -// preferring an exact match but also accepting a case-insensitive match. -// Unmarshal will only set exported fields of the struct. -// -// To unmarshal JSON into an interface value, -// Unmarshal stores one of these in the interface value: -// -// bool, for JSON booleans -// float64, for JSON numbers -// string, for JSON strings -// []interface{}, for JSON arrays -// map[string]interface{}, for JSON objects -// nil for JSON null -// -// To unmarshal a JSON array into a slice, Unmarshal resets the slice length -// to zero and then appends each element to the slice. -// As a special case, to unmarshal an empty JSON array into a slice, -// Unmarshal replaces the slice with a new empty slice. -// -// To unmarshal a JSON array into a Go array, Unmarshal decodes -// JSON array elements into corresponding Go array elements. -// If the Go array is smaller than the JSON array, -// the additional JSON array elements are discarded. -// If the JSON array is smaller than the Go array, -// the additional Go array elements are set to zero values. -// -// To unmarshal a JSON object into a string-keyed map, Unmarshal first -// establishes a map to use, If the map is nil, Unmarshal allocates a new map. -// Otherwise Unmarshal reuses the existing map, keeping existing entries. -// Unmarshal then stores key-value pairs from the JSON object into the map. -// -// If a JSON value is not appropriate for a given target type, -// or if a JSON number overflows the target type, Unmarshal -// skips that field and completes the unmarshaling as best it can. -// If no more serious errors are encountered, Unmarshal returns -// an UnmarshalTypeError describing the earliest such error. -// -// The JSON null value unmarshals into an interface, map, pointer, or slice -// by setting that Go value to nil. Because null is often used in JSON to mean -// ``not present,'' unmarshaling a JSON null into any other Go type has no effect -// on the value and produces no error. -// -// When unmarshaling quoted strings, invalid UTF-8 or -// invalid UTF-16 surrogate pairs are not treated as an error. -// Instead, they are replaced by the Unicode replacement -// character U+FFFD. -// -func Unmarshal(data []byte, v interface{}) error { - // Check for well-formedness. - // Avoids filling out half a data structure - // before discovering a JSON syntax error. - var d decodeState - err := checkValid(data, &d.scan) - if err != nil { - return err - } - - d.init(data) - return d.unmarshal(v) -} - -// Unmarshaler is the interface implemented by objects -// that can unmarshal a JSON description of themselves. -// The input can be assumed to be a valid encoding of -// a JSON value. UnmarshalJSON must copy the JSON data -// if it wishes to retain the data after returning. -type Unmarshaler interface { - UnmarshalJSON([]byte) error -} - -// An UnmarshalTypeError describes a JSON value that was -// not appropriate for a value of a specific Go type. -type UnmarshalTypeError struct { - Value string // description of JSON value - "bool", "array", "number -5" - Type reflect.Type // type of Go value it could not be assigned to - Offset int64 // error occurred after reading Offset bytes -} - -func (e *UnmarshalTypeError) Error() string { - return "json: cannot unmarshal " + e.Value + " into Go value of type " + e.Type.String() -} - -// An UnmarshalFieldError describes a JSON object key that -// led to an unexported (and therefore unwritable) struct field. -// (No longer used; kept for compatibility.) -type UnmarshalFieldError struct { - Key string - Type reflect.Type - Field reflect.StructField -} - -func (e *UnmarshalFieldError) Error() string { - return "json: cannot unmarshal object key " + strconv.Quote(e.Key) + " into unexported field " + e.Field.Name + " of type " + e.Type.String() -} - -// An InvalidUnmarshalError describes an invalid argument passed to Unmarshal. -// (The argument to Unmarshal must be a non-nil pointer.) -type InvalidUnmarshalError struct { - Type reflect.Type -} - -func (e *InvalidUnmarshalError) Error() string { - if e.Type == nil { - return "json: Unmarshal(nil)" - } - - if e.Type.Kind() != reflect.Ptr { - return "json: Unmarshal(non-pointer " + e.Type.String() + ")" - } - return "json: Unmarshal(nil " + e.Type.String() + ")" -} - -func (d *decodeState) unmarshal(v interface{}) (err error) { - defer func() { - if r := recover(); r != nil { - if _, ok := r.(runtime.Error); ok { - panic(r) - } - err = r.(error) - } - }() - - rv := reflect.ValueOf(v) - if rv.Kind() != reflect.Ptr || rv.IsNil() { - return &InvalidUnmarshalError{reflect.TypeOf(v)} - } - - d.scan.reset() - // We decode rv not rv.Elem because the Unmarshaler interface - // test must be applied at the top level of the value. - d.value(rv) - return d.savedError -} - -// A Number represents a JSON number literal. -type Number string - -// String returns the literal text of the number. -func (n Number) String() string { return string(n) } - -// Float64 returns the number as a float64. -func (n Number) Float64() (float64, error) { - return strconv.ParseFloat(string(n), 64) -} - -// Int64 returns the number as an int64. -func (n Number) Int64() (int64, error) { - return strconv.ParseInt(string(n), 10, 64) -} - -// isValidNumber reports whether s is a valid JSON number literal. -func isValidNumber(s string) bool { - // This function implements the JSON numbers grammar. - // See https://tools.ietf.org/html/rfc7159#section-6 - // and http://json.org/number.gif - - if s == "" { - return false - } - - // Optional - - if s[0] == '-' { - s = s[1:] - if s == "" { - return false - } - } - - // Digits - switch { - default: - return false - - case s[0] == '0': - s = s[1:] - - case '1' <= s[0] && s[0] <= '9': - s = s[1:] - for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { - s = s[1:] - } - } - - // . followed by 1 or more digits. - if len(s) >= 2 && s[0] == '.' && '0' <= s[1] && s[1] <= '9' { - s = s[2:] - for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { - s = s[1:] - } - } - - // e or E followed by an optional - or + and - // 1 or more digits. - if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') { - s = s[1:] - if s[0] == '+' || s[0] == '-' { - s = s[1:] - if s == "" { - return false - } - } - for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { - s = s[1:] - } - } - - // Make sure we are at the end. - return s == "" -} - -// decodeState represents the state while decoding a JSON value. -type decodeState struct { - data []byte - off int // read offset in data - scan scanner - nextscan scanner // for calls to nextValue - savedError error - useNumber bool -} - -// errPhase is used for errors that should not happen unless -// there is a bug in the JSON decoder or something is editing -// the data slice while the decoder executes. -var errPhase = errors.New("JSON decoder out of sync - data changing underfoot?") - -func (d *decodeState) init(data []byte) *decodeState { - d.data = data - d.off = 0 - d.savedError = nil - return d -} - -// error aborts the decoding by panicking with err. -func (d *decodeState) error(err error) { - panic(err) -} - -// saveError saves the first err it is called with, -// for reporting at the end of the unmarshal. -func (d *decodeState) saveError(err error) { - if d.savedError == nil { - d.savedError = err - } -} - -// next cuts off and returns the next full JSON value in d.data[d.off:]. -// The next value is known to be an object or array, not a literal. -func (d *decodeState) next() []byte { - c := d.data[d.off] - item, rest, err := nextValue(d.data[d.off:], &d.nextscan) - if err != nil { - d.error(err) - } - d.off = len(d.data) - len(rest) - - // Our scanner has seen the opening brace/bracket - // and thinks we're still in the middle of the object. - // invent a closing brace/bracket to get it out. - if c == '{' { - d.scan.step(&d.scan, '}') - } else { - d.scan.step(&d.scan, ']') - } - - return item -} - -// scanWhile processes bytes in d.data[d.off:] until it -// receives a scan code not equal to op. -// It updates d.off and returns the new scan code. -func (d *decodeState) scanWhile(op int) int { - var newOp int - for { - if d.off >= len(d.data) { - newOp = d.scan.eof() - d.off = len(d.data) + 1 // mark processed EOF with len+1 - } else { - c := d.data[d.off] - d.off++ - newOp = d.scan.step(&d.scan, c) - } - if newOp != op { - break - } - } - return newOp -} - -// value decodes a JSON value from d.data[d.off:] into the value. -// it updates d.off to point past the decoded value. -func (d *decodeState) value(v reflect.Value) { - if !v.IsValid() { - _, rest, err := nextValue(d.data[d.off:], &d.nextscan) - if err != nil { - d.error(err) - } - d.off = len(d.data) - len(rest) - - // d.scan thinks we're still at the beginning of the item. - // Feed in an empty string - the shortest, simplest value - - // so that it knows we got to the end of the value. - if d.scan.redo { - // rewind. - d.scan.redo = false - d.scan.step = stateBeginValue - } - d.scan.step(&d.scan, '"') - d.scan.step(&d.scan, '"') - - n := len(d.scan.parseState) - if n > 0 && d.scan.parseState[n-1] == parseObjectKey { - // d.scan thinks we just read an object key; finish the object - d.scan.step(&d.scan, ':') - d.scan.step(&d.scan, '"') - d.scan.step(&d.scan, '"') - d.scan.step(&d.scan, '}') - } - - return - } - - switch op := d.scanWhile(scanSkipSpace); op { - default: - d.error(errPhase) - - case scanBeginArray: - d.array(v) - - case scanBeginObject: - d.object(v) - - case scanBeginLiteral: - d.literal(v) - } -} - -type unquotedValue struct{} - -// valueQuoted is like value but decodes a -// quoted string literal or literal null into an interface value. -// If it finds anything other than a quoted string literal or null, -// valueQuoted returns unquotedValue{}. -func (d *decodeState) valueQuoted() interface{} { - switch op := d.scanWhile(scanSkipSpace); op { - default: - d.error(errPhase) - - case scanBeginArray: - d.array(reflect.Value{}) - - case scanBeginObject: - d.object(reflect.Value{}) - - case scanBeginLiteral: - switch v := d.literalInterface().(type) { - case nil, string: - return v - } - } - return unquotedValue{} -} - -// indirect walks down v allocating pointers as needed, -// until it gets to a non-pointer. -// if it encounters an Unmarshaler, indirect stops and returns that. -// if decodingNull is true, indirect stops at the last pointer so it can be set to nil. -func (d *decodeState) indirect(v reflect.Value, decodingNull bool) (Unmarshaler, encoding.TextUnmarshaler, reflect.Value) { - // If v is a named type and is addressable, - // start with its address, so that if the type has pointer methods, - // we find them. - if v.Kind() != reflect.Ptr && v.Type().Name() != "" && v.CanAddr() { - v = v.Addr() - } - for { - // Load value from interface, but only if the result will be - // usefully addressable. - if v.Kind() == reflect.Interface && !v.IsNil() { - e := v.Elem() - if e.Kind() == reflect.Ptr && !e.IsNil() && (!decodingNull || e.Elem().Kind() == reflect.Ptr) { - v = e - continue - } - } - - if v.Kind() != reflect.Ptr { - break - } - - if v.Elem().Kind() != reflect.Ptr && decodingNull && v.CanSet() { - break - } - if v.IsNil() { - v.Set(reflect.New(v.Type().Elem())) - } - if v.Type().NumMethod() > 0 { - if u, ok := v.Interface().(Unmarshaler); ok { - return u, nil, reflect.Value{} - } - if u, ok := v.Interface().(encoding.TextUnmarshaler); ok { - return nil, u, reflect.Value{} - } - } - v = v.Elem() - } - return nil, nil, v -} - -// array consumes an array from d.data[d.off-1:], decoding into the value v. -// the first byte of the array ('[') has been read already. -func (d *decodeState) array(v reflect.Value) { - // Check for unmarshaler. - u, ut, pv := d.indirect(v, false) - if u != nil { - d.off-- - err := u.UnmarshalJSON(d.next()) - if err != nil { - d.error(err) - } - return - } - if ut != nil { - d.saveError(&UnmarshalTypeError{"array", v.Type(), int64(d.off)}) - d.off-- - d.next() - return - } - - v = pv - - // Check type of target. - switch v.Kind() { - case reflect.Interface: - if v.NumMethod() == 0 { - // Decoding into nil interface? Switch to non-reflect code. - v.Set(reflect.ValueOf(d.arrayInterface())) - return - } - // Otherwise it's invalid. - fallthrough - default: - d.saveError(&UnmarshalTypeError{"array", v.Type(), int64(d.off)}) - d.off-- - d.next() - return - case reflect.Array: - case reflect.Slice: - break - } - - i := 0 - for { - // Look ahead for ] - can only happen on first iteration. - op := d.scanWhile(scanSkipSpace) - if op == scanEndArray { - break - } - - // Back up so d.value can have the byte we just read. - d.off-- - d.scan.undo(op) - - // Get element of array, growing if necessary. - if v.Kind() == reflect.Slice { - // Grow slice if necessary - if i >= v.Cap() { - newcap := v.Cap() + v.Cap()/2 - if newcap < 4 { - newcap = 4 - } - newv := reflect.MakeSlice(v.Type(), v.Len(), newcap) - reflect.Copy(newv, v) - v.Set(newv) - } - if i >= v.Len() { - v.SetLen(i + 1) - } - } - - if i < v.Len() { - // Decode into element. - d.value(v.Index(i)) - } else { - // Ran out of fixed array: skip. - d.value(reflect.Value{}) - } - i++ - - // Next token must be , or ]. - op = d.scanWhile(scanSkipSpace) - if op == scanEndArray { - break - } - if op != scanArrayValue { - d.error(errPhase) - } - } - - if i < v.Len() { - if v.Kind() == reflect.Array { - // Array. Zero the rest. - z := reflect.Zero(v.Type().Elem()) - for ; i < v.Len(); i++ { - v.Index(i).Set(z) - } - } else { - v.SetLen(i) - } - } - if i == 0 && v.Kind() == reflect.Slice { - v.Set(reflect.MakeSlice(v.Type(), 0, 0)) - } -} - -var nullLiteral = []byte("null") - -// object consumes an object from d.data[d.off-1:], decoding into the value v. -// the first byte ('{') of the object has been read already. -func (d *decodeState) object(v reflect.Value) { - // Check for unmarshaler. - u, ut, pv := d.indirect(v, false) - if u != nil { - d.off-- - err := u.UnmarshalJSON(d.next()) - if err != nil { - d.error(err) - } - return - } - if ut != nil { - d.saveError(&UnmarshalTypeError{"object", v.Type(), int64(d.off)}) - d.off-- - d.next() // skip over { } in input - return - } - v = pv - - // Decoding into nil interface? Switch to non-reflect code. - if v.Kind() == reflect.Interface && v.NumMethod() == 0 { - v.Set(reflect.ValueOf(d.objectInterface())) - return - } - - // Check type of target: struct or map[string]T - switch v.Kind() { - case reflect.Map: - // map must have string kind - t := v.Type() - if t.Key().Kind() != reflect.String { - d.saveError(&UnmarshalTypeError{"object", v.Type(), int64(d.off)}) - d.off-- - d.next() // skip over { } in input - return - } - if v.IsNil() { - v.Set(reflect.MakeMap(t)) - } - case reflect.Struct: - - default: - d.saveError(&UnmarshalTypeError{"object", v.Type(), int64(d.off)}) - d.off-- - d.next() // skip over { } in input - return - } - - var mapElem reflect.Value - keys := map[string]bool{} - - for { - // Read opening " of string key or closing }. - op := d.scanWhile(scanSkipSpace) - if op == scanEndObject { - // closing } - can only happen on first iteration. - break - } - if op != scanBeginLiteral { - d.error(errPhase) - } - - // Read key. - start := d.off - 1 - op = d.scanWhile(scanContinue) - item := d.data[start : d.off-1] - key, ok := unquote(item) - if !ok { - d.error(errPhase) - } - - // Check for duplicate keys. - _, ok = keys[key] - if !ok { - keys[key] = true - } else { - d.error(fmt.Errorf("json: duplicate key '%s' in object", key)) - } - - // Figure out field corresponding to key. - var subv reflect.Value - destring := false // whether the value is wrapped in a string to be decoded first - - if v.Kind() == reflect.Map { - elemType := v.Type().Elem() - if !mapElem.IsValid() { - mapElem = reflect.New(elemType).Elem() - } else { - mapElem.Set(reflect.Zero(elemType)) - } - subv = mapElem - } else { - var f *field - fields := cachedTypeFields(v.Type()) - for i := range fields { - ff := &fields[i] - if bytes.Equal(ff.nameBytes, []byte(key)) { - f = ff - break - } - } - if f != nil { - subv = v - destring = f.quoted - for _, i := range f.index { - if subv.Kind() == reflect.Ptr { - if subv.IsNil() { - subv.Set(reflect.New(subv.Type().Elem())) - } - subv = subv.Elem() - } - subv = subv.Field(i) - } - } - } - - // Read : before value. - if op == scanSkipSpace { - op = d.scanWhile(scanSkipSpace) - } - if op != scanObjectKey { - d.error(errPhase) - } - - // Read value. - if destring { - switch qv := d.valueQuoted().(type) { - case nil: - d.literalStore(nullLiteral, subv, false) - case string: - d.literalStore([]byte(qv), subv, true) - default: - d.saveError(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal unquoted value into %v", subv.Type())) - } - } else { - d.value(subv) - } - - // Write value back to map; - // if using struct, subv points into struct already. - if v.Kind() == reflect.Map { - kv := reflect.ValueOf(key).Convert(v.Type().Key()) - v.SetMapIndex(kv, subv) - } - - // Next token must be , or }. - op = d.scanWhile(scanSkipSpace) - if op == scanEndObject { - break - } - if op != scanObjectValue { - d.error(errPhase) - } - } -} - -// literal consumes a literal from d.data[d.off-1:], decoding into the value v. -// The first byte of the literal has been read already -// (that's how the caller knows it's a literal). -func (d *decodeState) literal(v reflect.Value) { - // All bytes inside literal return scanContinue op code. - start := d.off - 1 - op := d.scanWhile(scanContinue) - - // Scan read one byte too far; back up. - d.off-- - d.scan.undo(op) - - d.literalStore(d.data[start:d.off], v, false) -} - -// convertNumber converts the number literal s to a float64 or a Number -// depending on the setting of d.useNumber. -func (d *decodeState) convertNumber(s string) (interface{}, error) { - if d.useNumber { - return Number(s), nil - } - f, err := strconv.ParseFloat(s, 64) - if err != nil { - return nil, &UnmarshalTypeError{"number " + s, reflect.TypeOf(0.0), int64(d.off)} - } - return f, nil -} - -var numberType = reflect.TypeOf(Number("")) - -// literalStore decodes a literal stored in item into v. -// -// fromQuoted indicates whether this literal came from unwrapping a -// string from the ",string" struct tag option. this is used only to -// produce more helpful error messages. -func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool) { - // Check for unmarshaler. - if len(item) == 0 { - //Empty string given - d.saveError(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - return - } - wantptr := item[0] == 'n' // null - u, ut, pv := d.indirect(v, wantptr) - if u != nil { - err := u.UnmarshalJSON(item) - if err != nil { - d.error(err) - } - return - } - if ut != nil { - if item[0] != '"' { - if fromQuoted { - d.saveError(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - } else { - d.saveError(&UnmarshalTypeError{"string", v.Type(), int64(d.off)}) - } - return - } - s, ok := unquoteBytes(item) - if !ok { - if fromQuoted { - d.error(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - } else { - d.error(errPhase) - } - } - err := ut.UnmarshalText(s) - if err != nil { - d.error(err) - } - return - } - - v = pv - - switch c := item[0]; c { - case 'n': // null - switch v.Kind() { - case reflect.Interface, reflect.Ptr, reflect.Map, reflect.Slice: - v.Set(reflect.Zero(v.Type())) - // otherwise, ignore null for primitives/string - } - case 't', 'f': // true, false - value := c == 't' - switch v.Kind() { - default: - if fromQuoted { - d.saveError(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - } else { - d.saveError(&UnmarshalTypeError{"bool", v.Type(), int64(d.off)}) - } - case reflect.Bool: - v.SetBool(value) - case reflect.Interface: - if v.NumMethod() == 0 { - v.Set(reflect.ValueOf(value)) - } else { - d.saveError(&UnmarshalTypeError{"bool", v.Type(), int64(d.off)}) - } - } - - case '"': // string - s, ok := unquoteBytes(item) - if !ok { - if fromQuoted { - d.error(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - } else { - d.error(errPhase) - } - } - switch v.Kind() { - default: - d.saveError(&UnmarshalTypeError{"string", v.Type(), int64(d.off)}) - case reflect.Slice: - if v.Type().Elem().Kind() != reflect.Uint8 { - d.saveError(&UnmarshalTypeError{"string", v.Type(), int64(d.off)}) - break - } - b := make([]byte, base64.StdEncoding.DecodedLen(len(s))) - n, err := base64.StdEncoding.Decode(b, s) - if err != nil { - d.saveError(err) - break - } - v.SetBytes(b[:n]) - case reflect.String: - v.SetString(string(s)) - case reflect.Interface: - if v.NumMethod() == 0 { - v.Set(reflect.ValueOf(string(s))) - } else { - d.saveError(&UnmarshalTypeError{"string", v.Type(), int64(d.off)}) - } - } - - default: // number - if c != '-' && (c < '0' || c > '9') { - if fromQuoted { - d.error(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - } else { - d.error(errPhase) - } - } - s := string(item) - switch v.Kind() { - default: - if v.Kind() == reflect.String && v.Type() == numberType { - v.SetString(s) - if !isValidNumber(s) { - d.error(fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", item)) - } - break - } - if fromQuoted { - d.error(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type())) - } else { - d.error(&UnmarshalTypeError{"number", v.Type(), int64(d.off)}) - } - case reflect.Interface: - n, err := d.convertNumber(s) - if err != nil { - d.saveError(err) - break - } - if v.NumMethod() != 0 { - d.saveError(&UnmarshalTypeError{"number", v.Type(), int64(d.off)}) - break - } - v.Set(reflect.ValueOf(n)) - - case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: - n, err := strconv.ParseInt(s, 10, 64) - if err != nil || v.OverflowInt(n) { - d.saveError(&UnmarshalTypeError{"number " + s, v.Type(), int64(d.off)}) - break - } - v.SetInt(n) - - case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: - n, err := strconv.ParseUint(s, 10, 64) - if err != nil || v.OverflowUint(n) { - d.saveError(&UnmarshalTypeError{"number " + s, v.Type(), int64(d.off)}) - break - } - v.SetUint(n) - - case reflect.Float32, reflect.Float64: - n, err := strconv.ParseFloat(s, v.Type().Bits()) - if err != nil || v.OverflowFloat(n) { - d.saveError(&UnmarshalTypeError{"number " + s, v.Type(), int64(d.off)}) - break - } - v.SetFloat(n) - } - } -} - -// The xxxInterface routines build up a value to be stored -// in an empty interface. They are not strictly necessary, -// but they avoid the weight of reflection in this common case. - -// valueInterface is like value but returns interface{} -func (d *decodeState) valueInterface() interface{} { - switch d.scanWhile(scanSkipSpace) { - default: - d.error(errPhase) - panic("unreachable") - case scanBeginArray: - return d.arrayInterface() - case scanBeginObject: - return d.objectInterface() - case scanBeginLiteral: - return d.literalInterface() - } -} - -// arrayInterface is like array but returns []interface{}. -func (d *decodeState) arrayInterface() []interface{} { - var v = make([]interface{}, 0) - for { - // Look ahead for ] - can only happen on first iteration. - op := d.scanWhile(scanSkipSpace) - if op == scanEndArray { - break - } - - // Back up so d.value can have the byte we just read. - d.off-- - d.scan.undo(op) - - v = append(v, d.valueInterface()) - - // Next token must be , or ]. - op = d.scanWhile(scanSkipSpace) - if op == scanEndArray { - break - } - if op != scanArrayValue { - d.error(errPhase) - } - } - return v -} - -// objectInterface is like object but returns map[string]interface{}. -func (d *decodeState) objectInterface() map[string]interface{} { - m := make(map[string]interface{}) - keys := map[string]bool{} - - for { - // Read opening " of string key or closing }. - op := d.scanWhile(scanSkipSpace) - if op == scanEndObject { - // closing } - can only happen on first iteration. - break - } - if op != scanBeginLiteral { - d.error(errPhase) - } - - // Read string key. - start := d.off - 1 - op = d.scanWhile(scanContinue) - item := d.data[start : d.off-1] - key, ok := unquote(item) - if !ok { - d.error(errPhase) - } - - // Check for duplicate keys. - _, ok = keys[key] - if !ok { - keys[key] = true - } else { - d.error(fmt.Errorf("json: duplicate key '%s' in object", key)) - } - - // Read : before value. - if op == scanSkipSpace { - op = d.scanWhile(scanSkipSpace) - } - if op != scanObjectKey { - d.error(errPhase) - } - - // Read value. - m[key] = d.valueInterface() - - // Next token must be , or }. - op = d.scanWhile(scanSkipSpace) - if op == scanEndObject { - break - } - if op != scanObjectValue { - d.error(errPhase) - } - } - return m -} - -// literalInterface is like literal but returns an interface value. -func (d *decodeState) literalInterface() interface{} { - // All bytes inside literal return scanContinue op code. - start := d.off - 1 - op := d.scanWhile(scanContinue) - - // Scan read one byte too far; back up. - d.off-- - d.scan.undo(op) - item := d.data[start:d.off] - - switch c := item[0]; c { - case 'n': // null - return nil - - case 't', 'f': // true, false - return c == 't' - - case '"': // string - s, ok := unquote(item) - if !ok { - d.error(errPhase) - } - return s - - default: // number - if c != '-' && (c < '0' || c > '9') { - d.error(errPhase) - } - n, err := d.convertNumber(string(item)) - if err != nil { - d.saveError(err) - } - return n - } -} - -// getu4 decodes \uXXXX from the beginning of s, returning the hex value, -// or it returns -1. -func getu4(s []byte) rune { - if len(s) < 6 || s[0] != '\\' || s[1] != 'u' { - return -1 - } - r, err := strconv.ParseUint(string(s[2:6]), 16, 64) - if err != nil { - return -1 - } - return rune(r) -} - -// unquote converts a quoted JSON string literal s into an actual string t. -// The rules are different than for Go, so cannot use strconv.Unquote. -func unquote(s []byte) (t string, ok bool) { - s, ok = unquoteBytes(s) - t = string(s) - return -} - -func unquoteBytes(s []byte) (t []byte, ok bool) { - if len(s) < 2 || s[0] != '"' || s[len(s)-1] != '"' { - return - } - s = s[1 : len(s)-1] - - // Check for unusual characters. If there are none, - // then no unquoting is needed, so return a slice of the - // original bytes. - r := 0 - for r < len(s) { - c := s[r] - if c == '\\' || c == '"' || c < ' ' { - break - } - if c < utf8.RuneSelf { - r++ - continue - } - rr, size := utf8.DecodeRune(s[r:]) - if rr == utf8.RuneError && size == 1 { - break - } - r += size - } - if r == len(s) { - return s, true - } - - b := make([]byte, len(s)+2*utf8.UTFMax) - w := copy(b, s[0:r]) - for r < len(s) { - // Out of room? Can only happen if s is full of - // malformed UTF-8 and we're replacing each - // byte with RuneError. - if w >= len(b)-2*utf8.UTFMax { - nb := make([]byte, (len(b)+utf8.UTFMax)*2) - copy(nb, b[0:w]) - b = nb - } - switch c := s[r]; { - case c == '\\': - r++ - if r >= len(s) { - return - } - switch s[r] { - default: - return - case '"', '\\', '/', '\'': - b[w] = s[r] - r++ - w++ - case 'b': - b[w] = '\b' - r++ - w++ - case 'f': - b[w] = '\f' - r++ - w++ - case 'n': - b[w] = '\n' - r++ - w++ - case 'r': - b[w] = '\r' - r++ - w++ - case 't': - b[w] = '\t' - r++ - w++ - case 'u': - r-- - rr := getu4(s[r:]) - if rr < 0 { - return - } - r += 6 - if utf16.IsSurrogate(rr) { - rr1 := getu4(s[r:]) - if dec := utf16.DecodeRune(rr, rr1); dec != unicode.ReplacementChar { - // A valid pair; consume. - r += 6 - w += utf8.EncodeRune(b[w:], dec) - break - } - // Invalid surrogate; fall back to replacement rune. - rr = unicode.ReplacementChar - } - w += utf8.EncodeRune(b[w:], rr) - } - - // Quote, control characters are invalid. - case c == '"', c < ' ': - return - - // ASCII - case c < utf8.RuneSelf: - b[w] = c - r++ - w++ - - // Coerce to well-formed UTF-8. - default: - rr, size := utf8.DecodeRune(s[r:]) - r += size - w += utf8.EncodeRune(b[w:], rr) - } - } - return b[0:w], true -} -- cgit v1.2.3-1-g7c22