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1 // Protocol Buffers - Google's data interchange format | 1 // Protocol Buffers - Google's data interchange format |
2 // Copyright 2008 Google Inc. All rights reserved. | 2 // Copyright 2008 Google Inc. All rights reserved. |
3 // https://developers.google.com/protocol-buffers/ | 3 // https://developers.google.com/protocol-buffers/ |
4 // | 4 // |
5 // Redistribution and use in source and binary forms, with or without | 5 // Redistribution and use in source and binary forms, with or without |
6 // modification, are permitted provided that the following conditions are | 6 // modification, are permitted provided that the following conditions are |
7 // met: | 7 // met: |
8 // | 8 // |
9 // * Redistributions of source code must retain the above copyright | 9 // * Redistributions of source code must retain the above copyright |
10 // notice, this list of conditions and the following disclaimer. | 10 // notice, this list of conditions and the following disclaimer. |
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69 TYPE_DOUBLE = 5, | 69 TYPE_DOUBLE = 5, |
70 TYPE_FLOAT = 6, | 70 TYPE_FLOAT = 6, |
71 TYPE_BOOL = 7, | 71 TYPE_BOOL = 7, |
72 TYPE_ENUM = 8, | 72 TYPE_ENUM = 8, |
73 TYPE_STRING = 9, | 73 TYPE_STRING = 9, |
74 TYPE_BYTES = 10, | 74 TYPE_BYTES = 10, |
75 TYPE_NULL = 11, // explicit NULL type | 75 TYPE_NULL = 11, // explicit NULL type |
76 }; | 76 }; |
77 | 77 |
78 // Constructors and Destructor | 78 // Constructors and Destructor |
79 explicit DataPiece(const int32 value) | 79 explicit DataPiece(const int32 value) : type_(TYPE_INT32), i32_(value) {} |
80 : type_(TYPE_INT32), i32_(value), use_strict_base64_decoding_(false) {} | 80 explicit DataPiece(const int64 value) : type_(TYPE_INT64), i64_(value) {} |
81 explicit DataPiece(const int64 value) | 81 explicit DataPiece(const uint32 value) : type_(TYPE_UINT32), u32_(value) {} |
82 : type_(TYPE_INT64), i64_(value), use_strict_base64_decoding_(false) {} | 82 explicit DataPiece(const uint64 value) : type_(TYPE_UINT64), u64_(value) {} |
83 explicit DataPiece(const uint32 value) | 83 explicit DataPiece(const double value) : type_(TYPE_DOUBLE), double_(value) {} |
84 : type_(TYPE_UINT32), u32_(value), use_strict_base64_decoding_(false) {} | 84 explicit DataPiece(const float value) : type_(TYPE_FLOAT), float_(value) {} |
85 explicit DataPiece(const uint64 value) | 85 explicit DataPiece(const bool value) : type_(TYPE_BOOL), bool_(value) {} |
86 : type_(TYPE_UINT64), u64_(value), use_strict_base64_decoding_(false) {} | |
87 explicit DataPiece(const double value) | |
88 : type_(TYPE_DOUBLE), | |
89 double_(value), | |
90 use_strict_base64_decoding_(false) {} | |
91 explicit DataPiece(const float value) | |
92 : type_(TYPE_FLOAT), float_(value), use_strict_base64_decoding_(false) {} | |
93 explicit DataPiece(const bool value) | |
94 : type_(TYPE_BOOL), bool_(value), use_strict_base64_decoding_(false) {} | |
95 DataPiece(StringPiece value, bool use_strict_base64_decoding) | 86 DataPiece(StringPiece value, bool use_strict_base64_decoding) |
96 : type_(TYPE_STRING), | 87 : type_(TYPE_STRING), |
97 str_(StringPiecePod::CreateFromStringPiece(value)), | 88 str_(StringPiecePod::CreateFromStringPiece(value)), |
98 use_strict_base64_decoding_(use_strict_base64_decoding) {} | 89 use_strict_base64_decoding_(use_strict_base64_decoding) {} |
99 // Constructor for bytes. The second parameter is not used. | 90 // Constructor for bytes. The second parameter is not used. |
100 DataPiece(StringPiece value, bool dummy, bool use_strict_base64_decoding) | 91 DataPiece(StringPiece value, bool dummy, bool use_strict_base64_decoding) |
101 : type_(TYPE_BYTES), | 92 : type_(TYPE_BYTES), |
102 str_(StringPiecePod::CreateFromStringPiece(value)), | 93 str_(StringPiecePod::CreateFromStringPiece(value)), |
103 use_strict_base64_decoding_(use_strict_base64_decoding) {} | 94 use_strict_base64_decoding_(use_strict_base64_decoding) {} |
104 | 95 DataPiece(const DataPiece& r) : type_(r.type_), str_(r.str_) {} |
105 DataPiece(const DataPiece& r) : type_(r.type_) { InternalCopy(r); } | |
106 | |
107 DataPiece& operator=(const DataPiece& x) { | 96 DataPiece& operator=(const DataPiece& x) { |
108 InternalCopy(x); | 97 type_ = x.type_; |
| 98 str_ = x.str_; |
109 return *this; | 99 return *this; |
110 } | 100 } |
111 | 101 |
112 static DataPiece NullData() { return DataPiece(TYPE_NULL, 0); } | 102 static DataPiece NullData() { return DataPiece(TYPE_NULL, 0); } |
113 | 103 |
114 virtual ~DataPiece() { | 104 virtual ~DataPiece() { |
115 } | 105 } |
116 | 106 |
117 // Accessors | 107 // Accessors |
118 Type type() const { return type_; } | 108 Type type() const { return type_; } |
119 | 109 |
120 bool use_strict_base64_decoding() { return use_strict_base64_decoding_; } | |
121 | |
122 StringPiece str() const { | 110 StringPiece str() const { |
123 GOOGLE_LOG_IF(DFATAL, type_ != TYPE_STRING) << "Not a string type."; | 111 GOOGLE_LOG_IF(DFATAL, type_ != TYPE_STRING) << "Not a string type."; |
124 return str_; | 112 return str_; |
125 } | 113 } |
126 | 114 |
127 | 115 |
128 // Parses, casts or converts the value stored in the DataPiece into an int32. | 116 // Parses, casts or converts the value stored in the DataPiece into an int32. |
129 util::StatusOr<int32> ToInt32() const; | 117 util::StatusOr<int32> ToInt32() const; |
130 | 118 |
131 // Parses, casts or converts the value stored in the DataPiece into a uint32. | 119 // Parses, casts or converts the value stored in the DataPiece into a uint32. |
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152 // Tries to convert the value contained in this datapiece to string. If the | 140 // Tries to convert the value contained in this datapiece to string. If the |
153 // conversion fails, it returns the default_string. | 141 // conversion fails, it returns the default_string. |
154 string ValueAsStringOrDefault(StringPiece default_string) const; | 142 string ValueAsStringOrDefault(StringPiece default_string) const; |
155 | 143 |
156 util::StatusOr<string> ToBytes() const; | 144 util::StatusOr<string> ToBytes() const; |
157 | 145 |
158 // Converts a value into protocol buffer enum number. If the value is a | 146 // Converts a value into protocol buffer enum number. If the value is a |
159 // string, first attempts conversion by name, trying names as follows: | 147 // string, first attempts conversion by name, trying names as follows: |
160 // 1) the directly provided string value. | 148 // 1) the directly provided string value. |
161 // 2) the value upper-cased and replacing '-' by '_' | 149 // 2) the value upper-cased and replacing '-' by '_' |
162 // 3) if use_lower_camel_for_enums is true it also attempts by comparing | |
163 // enum name without underscore with the value upper cased above. | |
164 // If the value is not a string, attempts to convert to a 32-bit integer. | 150 // If the value is not a string, attempts to convert to a 32-bit integer. |
165 // If none of these succeeds, returns a conversion error status. | 151 // If none of these succeeds, returns a conversion error status. |
166 util::StatusOr<int> ToEnum(const google::protobuf::Enum* enum_type, | 152 util::StatusOr<int> ToEnum(const google::protobuf::Enum* enum_type) const; |
167 bool use_lower_camel_for_enums) const; | |
168 | 153 |
169 private: | 154 private: |
170 // Disallow implicit constructor. | 155 // Disallow implicit constructor. |
171 DataPiece(); | 156 DataPiece(); |
172 | 157 |
173 // Helper to create NULL or ENUM types. | 158 // Helper to create NULL or ENUM types. |
174 DataPiece(Type type, int32 val) | 159 DataPiece(Type type, int32 val) : type_(type), i32_(val) {} |
175 : type_(type), i32_(val), use_strict_base64_decoding_(false) {} | |
176 | 160 |
177 // For numeric conversion between | 161 // For numeric conversion between |
178 // int32, int64, uint32, uint64, double, float and bool | 162 // int32, int64, uint32, uint64, double, float and bool |
179 template <typename To> | 163 template <typename To> |
180 util::StatusOr<To> GenericConvert() const; | 164 util::StatusOr<To> GenericConvert() const; |
181 | 165 |
182 // For conversion from string to | 166 // For conversion from string to |
183 // int32, int64, uint32, uint64, double, float and bool | 167 // int32, int64, uint32, uint64, double, float and bool |
184 template <typename To> | 168 template <typename To> |
185 util::StatusOr<To> StringToNumber(bool (*func)(StringPiece, To*)) const; | 169 util::StatusOr<To> StringToNumber(bool (*func)(StringPiece, To*)) const; |
186 | 170 |
187 // Decodes a base64 string. Returns true on success. | 171 // Decodes a base64 string. Returns true on success. |
188 bool DecodeBase64(StringPiece src, string* dest) const; | 172 bool DecodeBase64(StringPiece src, string* dest) const; |
189 | 173 |
190 // Helper function to initialize this DataPiece with 'other'. | |
191 void InternalCopy(const DataPiece& other); | |
192 | |
193 // Data type for this piece of data. | 174 // Data type for this piece of data. |
194 Type type_; | 175 Type type_; |
195 | 176 |
196 typedef ::google::protobuf::internal::StringPiecePod StringPiecePod; | 177 typedef ::google::protobuf::internal::StringPiecePod StringPiecePod; |
197 | 178 |
198 // Stored piece of data. | 179 // Stored piece of data. |
199 union { | 180 union { |
200 int32 i32_; | 181 int32 i32_; |
201 int64 i64_; | 182 int64 i64_; |
202 uint32 u32_; | 183 uint32 u32_; |
203 uint64 u64_; | 184 uint64 u64_; |
204 double double_; | 185 double double_; |
205 float float_; | 186 float float_; |
206 bool bool_; | 187 bool bool_; |
207 StringPiecePod str_; | 188 StringPiecePod str_; |
208 }; | 189 }; |
209 | 190 |
210 // Uses a stricter version of base64 decoding for byte fields. | 191 // Uses a stricter version of base64 decoding for byte fields. |
211 bool use_strict_base64_decoding_; | 192 bool use_strict_base64_decoding_; |
212 }; | 193 }; |
213 | 194 |
214 } // namespace converter | 195 } // namespace converter |
215 } // namespace util | 196 } // namespace util |
216 } // namespace protobuf | 197 } // namespace protobuf |
217 | 198 |
218 } // namespace google | 199 } // namespace google |
219 #endif // GOOGLE_PROTOBUF_UTIL_CONVERTER_DATAPIECE_H__ | 200 #endif // GOOGLE_PROTOBUF_UTIL_CONVERTER_DATAPIECE_H__ |
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