diff options
Diffstat (limited to 'src/mongo/util/options_parser/value.h')
| -rw-r--r-- | src/mongo/util/options_parser/value.h | 260 |
1 files changed, 129 insertions, 131 deletions
diff --git a/src/mongo/util/options_parser/value.h b/src/mongo/util/options_parser/value.h index 9c9bb1468d7..2f7a089ea80 100644 --- a/src/mongo/util/options_parser/value.h +++ b/src/mongo/util/options_parser/value.h @@ -36,147 +36,145 @@ namespace mongo { namespace optionenvironment { - class Constraint; - class KeyConstraint; +class Constraint; +class KeyConstraint; + +/** + * Helper typedefs for the more complex C++ types supported by this Value class + */ +typedef std::map<std::string, std::string> StringMap_t; +typedef std::vector<std::string> StringVector_t; + +typedef std::string Key; + +/** A simple container interface for storing various C++ values. + * + * Usage: + * + * Value intVal(2); + * Value stringVal("string"); + * + * int intContents = 1; + * Status ret = stringVal.get(&intContents); + * // ret != Status::OK() + * // intContents is still 1 + * + * ret = intVal.get(&intContents); + * // ret == Status::OK() + * // intContents is now 2 + */ +class Value { +public: + // Constructors + + explicit Value() : _type(None) {} + explicit Value(StringVector_t val) : _stringVectorVal(val), _type(StringVector) {} + explicit Value(StringMap_t val) : _stringMapVal(val), _type(StringMap) {} + explicit Value(bool val) : _boolVal(val), _type(Bool) {} + explicit Value(double val) : _doubleVal(val), _type(Double) {} + explicit Value(int val) : _intVal(val), _type(Int) {} + explicit Value(long val) : _longVal(val), _type(Long) {} + explicit Value(std::string val) : _stringVal(val), _type(String) {} + explicit Value(unsigned long long val) : _unsignedLongLongVal(val), _type(UnsignedLongLong) {} + explicit Value(unsigned val) : _unsignedVal(val), _type(Unsigned) {} + + // Access interface + + Status get(StringVector_t* val) const; + Status get(StringMap_t* val) const; + Status get(bool* val) const; + Status get(double* val) const; + Status get(int* val) const; + Status get(long* val) const; + Status get(std::string* val) const; + Status get(unsigned long long* val) const; + Status get(unsigned* val) const; + + // Utility functions /** - * Helper typedefs for the more complex C++ types supported by this Value class + * Return the value's type as a string */ - typedef std::map<std::string, std::string> StringMap_t; - typedef std::vector<std::string> StringVector_t; + std::string typeToString() const; - typedef std::string Key; + /** + * Return true if the value was created with the no argument constructor + */ + bool isEmpty() const; - /** A simple container interface for storing various C++ values. - * - * Usage: - * - * Value intVal(2); - * Value stringVal("string"); - * - * int intContents = 1; - * Status ret = stringVal.get(&intContents); - * // ret != Status::OK() - * // intContents is still 1 + /** + * Return true if the other Value equals this value, both in type and in contents * - * ret = intVal.get(&intContents); - * // ret == Status::OK() - * // intContents is now 2 + * Two empty values are equal */ - class Value { - public: - - // Constructors - - explicit Value() : _type(None) { } - explicit Value(StringVector_t val) : _stringVectorVal(val), _type(StringVector) {} - explicit Value(StringMap_t val) : _stringMapVal(val), _type(StringMap) {} - explicit Value(bool val) : _boolVal(val), _type(Bool) { } - explicit Value(double val) : _doubleVal(val), _type(Double) { } - explicit Value(int val) : _intVal(val), _type(Int) { } - explicit Value(long val) : _longVal(val), _type(Long) { } - explicit Value(std::string val) : _stringVal(val), _type(String) { } - explicit Value(unsigned long long val) : _unsignedLongLongVal(val), - _type(UnsignedLongLong) { } - explicit Value(unsigned val) : _unsignedVal(val), _type(Unsigned) { } - - // Access interface - - Status get(StringVector_t* val) const; - Status get(StringMap_t* val) const; - Status get(bool* val) const; - Status get(double* val) const; - Status get(int* val) const; - Status get(long* val) const; - Status get(std::string* val) const; - Status get(unsigned long long* val) const; - Status get(unsigned* val) const; - - // Utility functions - - /** - * Return the value's type as a string - */ - std::string typeToString() const; - - /** - * Return true if the value was created with the no argument constructor - */ - bool isEmpty() const; - - /** - * Return true if the other Value equals this value, both in type and in contents - * - * Two empty values are equal - */ - bool equal(const Value&) const; - - /** - * Return the std::string representation of this Value. This function is used only for - * debugging purposes and does not output data in an easily parseable format. - */ - std::string toString() const; - - /** - * The functions below are the legacy interface to be consistent with boost::any during the - * transition period - */ - - /** - * Returns the contents of this Value as type T. Throws MsgAssertionException if the type - * does not match - */ - template <typename T> - T as() const; - - /** - * Return the type_info for this value - */ - const std::type_info& type() const; - - private: - StringVector_t _stringVectorVal; - StringMap_t _stringMapVal; - std::string _stringVal; - union { - bool _boolVal; - double _doubleVal; - int _intVal; - long _longVal; - unsigned long long _unsignedLongLongVal; - unsigned _unsignedVal; - }; - - // Types currently supported by Value - enum Type { - StringVector, // std::vector<std::string> - StringMap, // std::map<std::string, std::string> - Bool, // bool - Double, // double - Int, // int - Long, // long - String, // std::string - UnsignedLongLong, // unsigned long long - Unsigned, // unsigned - None, // (not set) - }; - - Type _type; - }; + bool equal(const Value&) const; + /** + * Return the std::string representation of this Value. This function is used only for + * debugging purposes and does not output data in an easily parseable format. + */ + std::string toString() const; + + /** + * The functions below are the legacy interface to be consistent with boost::any during the + * transition period + */ + + /** + * Returns the contents of this Value as type T. Throws MsgAssertionException if the type + * does not match + */ template <typename T> - T Value::as() const { - T valueType; + T as() const; - Status ret = get(&valueType); - if (!ret.isOK()) { - StringBuilder message; - message << "failed to extract typed value from Value container: " << ret.toString(); - throw MsgAssertionException(17114, message.str()); - } + /** + * Return the type_info for this value + */ + const std::type_info& type() const; + +private: + StringVector_t _stringVectorVal; + StringMap_t _stringMapVal; + std::string _stringVal; + union { + bool _boolVal; + double _doubleVal; + int _intVal; + long _longVal; + unsigned long long _unsignedLongLongVal; + unsigned _unsignedVal; + }; + + // Types currently supported by Value + enum Type { + StringVector, // std::vector<std::string> + StringMap, // std::map<std::string, std::string> + Bool, // bool + Double, // double + Int, // int + Long, // long + String, // std::string + UnsignedLongLong, // unsigned long long + Unsigned, // unsigned + None, // (not set) + }; + + Type _type; +}; - return valueType; +template <typename T> +T Value::as() const { + T valueType; + + Status ret = get(&valueType); + if (!ret.isOK()) { + StringBuilder message; + message << "failed to extract typed value from Value container: " << ret.toString(); + throw MsgAssertionException(17114, message.str()); } -} // namespace optionenvironment -} // namespace mongo + return valueType; +} + +} // namespace optionenvironment +} // namespace mongo |