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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef ZVISION_SINGLE_VALUE_CONTAINER_H
#define ZVISION_SINGLE_VALUE_CONTAINER_H
namespace Common {
class String;
}
namespace ZVision {
/**
* A generic single value storage class. It is useful for storing different
* value types in a single List, Hashmap, etc.
*/
class SingleValueContainer {
public:
enum ValueType {
BOOL,
BYTE,
INT16,
UINT16,
INT32,
UINT32,
FLOAT,
DOUBLE,
STRING
};
// Constructors
explicit SingleValueContainer(ValueType type);
explicit SingleValueContainer(bool value);
explicit SingleValueContainer(byte value);
explicit SingleValueContainer(int16 value);
explicit SingleValueContainer(uint16 value);
explicit SingleValueContainer(int32 value);
explicit SingleValueContainer(uint32 value);
explicit SingleValueContainer(float value);
explicit SingleValueContainer(double value);
explicit SingleValueContainer(Common::String value);
// Copy constructor
explicit SingleValueContainer(const SingleValueContainer &other);
// Destructor
~SingleValueContainer();
private:
ValueType _objectType;
union {
bool boolVal;
byte byteVal;
int16 int16Val;
uint16 uint16Val;
int32 int32Val;
uint32 uint32Val;
float floatVal;
double doubleVal;
char *stringVal;
} _value;
public:
SingleValueContainer &operator=(const bool &rhs);
SingleValueContainer &operator=(const byte &rhs);
SingleValueContainer &operator=(const int16 &rhs);
SingleValueContainer &operator=(const uint16 &rhs);
SingleValueContainer &operator=(const int32 &rhs);
SingleValueContainer &operator=(const uint32 &rhs);
SingleValueContainer &operator=(const float &rhs);
SingleValueContainer &operator=(const double &rhs);
SingleValueContainer &operator=(const Common::String &rhs);
SingleValueContainer &operator=(const SingleValueContainer &rhs);
/**
* Retrieve a bool from the container. If the container is not storing a
* bool, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getBoolValue(bool *returnValue) const;
/**
* Retrieve a byte from the container. If the container is not storing a
* byte, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getByteValue(byte *returnValue) const;
/**
* Retrieve an int16 from the container. If the container is not storing an
* int16, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getInt16Value(int16 *returnValue) const;
/**
* Retrieve a uint16 from the container. If the container is not storing a
* uint16, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getUInt16Value(uint16 *returnValue) const;
/**
* Retrieve an int32 from the container. If the container is not storing an
* int32, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getInt32Value(int32 *returnValue) const;
/**
* Retrieve a uint32 from the container. If the container is not storing a
* uint32, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getUInt32Value(uint32 *returnValue) const;
/**
* Retrieve a float from the container. If the container is not storing a
* float, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getFloatValue(float *returnValue) const;
/**
* Retrieve a double from the container. If the container is not storing a
* double, this will return false and display a warning().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getDoubleValue(double *returnValue) const;
/**
* Retrieve a String from the container. If the container is not storing a
* string, this will return false and display a warning().
*
* Caution: Strings are internally stored as char[]. getStringValue uses
* Common::String::operator=(char *) to do the assigment, which uses both
* strlen() AND memmove().
*
* @param returnValue Pointer to where you want the value stored
* @return Value indicating whether the value assignment was successful
*/
bool getStringValue(Common::String *returnValue) const;
private:
/**
* Helper method for destruction and assignment. It checks to see
* if the char pointer is being used, and if so calls delete on it
*/
void deleteCharPointer();
};
} // End of namespace ZVision
#endif
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