[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go
new file mode 100644
index 0000000..50578d6
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go
@@ -0,0 +1,192 @@
+// Copyright 2019 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.
+
+package json
+
+import (
+ "bytes"
+ "fmt"
+ "strconv"
+)
+
+// Kind represents a token kind expressible in the JSON format.
+type Kind uint16
+
+const (
+ Invalid Kind = (1 << iota) / 2
+ EOF
+ Null
+ Bool
+ Number
+ String
+ Name
+ ObjectOpen
+ ObjectClose
+ ArrayOpen
+ ArrayClose
+
+ // comma is only for parsing in between tokens and
+ // does not need to be exported.
+ comma
+)
+
+func (k Kind) String() string {
+ switch k {
+ case EOF:
+ return "eof"
+ case Null:
+ return "null"
+ case Bool:
+ return "bool"
+ case Number:
+ return "number"
+ case String:
+ return "string"
+ case ObjectOpen:
+ return "{"
+ case ObjectClose:
+ return "}"
+ case Name:
+ return "name"
+ case ArrayOpen:
+ return "["
+ case ArrayClose:
+ return "]"
+ case comma:
+ return ","
+ }
+ return "<invalid>"
+}
+
+// Token provides a parsed token kind and value.
+//
+// Values are provided by the difference accessor methods. The accessor methods
+// Name, Bool, and ParsedString will panic if called on the wrong kind. There
+// are different accessor methods for the Number kind for converting to the
+// appropriate Go numeric type and those methods have the ok return value.
+type Token struct {
+ // Token kind.
+ kind Kind
+ // pos provides the position of the token in the original input.
+ pos int
+ // raw bytes of the serialized token.
+ // This is a subslice into the original input.
+ raw []byte
+ // boo is parsed boolean value.
+ boo bool
+ // str is parsed string value.
+ str string
+}
+
+// Kind returns the token kind.
+func (t Token) Kind() Kind {
+ return t.kind
+}
+
+// RawString returns the read value in string.
+func (t Token) RawString() string {
+ return string(t.raw)
+}
+
+// Pos returns the token position from the input.
+func (t Token) Pos() int {
+ return t.pos
+}
+
+// Name returns the object name if token is Name, else it panics.
+func (t Token) Name() string {
+ if t.kind == Name {
+ return t.str
+ }
+ panic(fmt.Sprintf("Token is not a Name: %v", t.RawString()))
+}
+
+// Bool returns the bool value if token kind is Bool, else it panics.
+func (t Token) Bool() bool {
+ if t.kind == Bool {
+ return t.boo
+ }
+ panic(fmt.Sprintf("Token is not a Bool: %v", t.RawString()))
+}
+
+// ParsedString returns the string value for a JSON string token or the read
+// value in string if token is not a string.
+func (t Token) ParsedString() string {
+ if t.kind == String {
+ return t.str
+ }
+ panic(fmt.Sprintf("Token is not a String: %v", t.RawString()))
+}
+
+// Float returns the floating-point number if token kind is Number.
+//
+// The floating-point precision is specified by the bitSize parameter: 32 for
+// float32 or 64 for float64. If bitSize=32, the result still has type float64,
+// but it will be convertible to float32 without changing its value. It will
+// return false if the number exceeds the floating point limits for given
+// bitSize.
+func (t Token) Float(bitSize int) (float64, bool) {
+ if t.kind != Number {
+ return 0, false
+ }
+ f, err := strconv.ParseFloat(t.RawString(), bitSize)
+ if err != nil {
+ return 0, false
+ }
+ return f, true
+}
+
+// Int returns the signed integer number if token is Number.
+//
+// The given bitSize specifies the integer type that the result must fit into.
+// It returns false if the number is not an integer value or if the result
+// exceeds the limits for given bitSize.
+func (t Token) Int(bitSize int) (int64, bool) {
+ s, ok := t.getIntStr()
+ if !ok {
+ return 0, false
+ }
+ n, err := strconv.ParseInt(s, 10, bitSize)
+ if err != nil {
+ return 0, false
+ }
+ return n, true
+}
+
+// Uint returns the signed integer number if token is Number.
+//
+// The given bitSize specifies the unsigned integer type that the result must
+// fit into. It returns false if the number is not an unsigned integer value
+// or if the result exceeds the limits for given bitSize.
+func (t Token) Uint(bitSize int) (uint64, bool) {
+ s, ok := t.getIntStr()
+ if !ok {
+ return 0, false
+ }
+ n, err := strconv.ParseUint(s, 10, bitSize)
+ if err != nil {
+ return 0, false
+ }
+ return n, true
+}
+
+func (t Token) getIntStr() (string, bool) {
+ if t.kind != Number {
+ return "", false
+ }
+ parts, ok := parseNumberParts(t.raw)
+ if !ok {
+ return "", false
+ }
+ return normalizeToIntString(parts)
+}
+
+// TokenEquals returns true if given Tokens are equal, else false.
+func TokenEquals(x, y Token) bool {
+ return x.kind == y.kind &&
+ x.pos == y.pos &&
+ bytes.Equal(x.raw, y.raw) &&
+ x.boo == y.boo &&
+ x.str == y.str
+}