#include <object.h>
Inheritance diagram for PObject:
Comparison functions | |
| enum | Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 } |
| virtual Comparison | Compare (const PObject &obj) const |
| virtual Comparison | CompareObjectMemoryDirect (const PObject &obj) const |
| bool | operator== (const PObject &obj) const |
| bool | operator!= (const PObject &obj) const |
| bool | operator< (const PObject &obj) const |
| bool | operator> (const PObject &obj) const |
| bool | operator<= (const PObject &obj) const |
| bool | operator>= (const PObject &obj) const |
Run Time Type functions | |
| virtual const char * | GetClass (unsigned=0) const |
| PBoolean | IsClass (const char *cls) const |
| virtual PBoolean | InternalIsDescendant (const char *clsName) const |
| static const char * | Class () |
I/O functions | |
| virtual void | PrintOn (ostream &strm) const |
| virtual void | ReadFrom (istream &strm) |
| ostream & | operator<< (ostream &strm, const PObject &obj) |
| istream & | operator>> (istream &strm, PObject &obj) |
Public Member Functions | |
| virtual | ~PObject () |
Miscellaneous functions | |
| virtual PObject * | Clone () const |
| virtual PINDEX | HashFunction () const |
Protected Member Functions | |
| PObject () | |
| enum PObject::Comparison |
Result of the comparison operation performed by the Compare()# function.
| PObject::PObject | ( | ) | [inline, protected] |
Constructor for PObject, make protected so cannot ever create one on its own.
| virtual PObject::~PObject | ( | ) | [inline, virtual] |
| static const char* PObject::Class | ( | ) | [inline, static] |
Get the name of the class as a C string. This is a static function which returns the type of a specific class.
When comparing class names, always use the strcmp()# function rather than comparing pointers. The pointers are not necessarily the same over compilation units depending on the compiler, platform etc.
| virtual const char* PObject::GetClass | ( | unsigned | = 0 |
) | const [inline, virtual] |
Get the current dynamic type of the object instance.
When comparing class names, always use the strcmp()# function rather than comparing pointers. The pointers are not necessarily the same over compilation units depending on the compiler, platform etc.
The PCLASSINFO macro declares an override of this function for the particular class. The user need not implement it.
| PBoolean PObject::IsClass | ( | const char * | cls | ) | const [inline] |
| virtual PBoolean PObject::InternalIsDescendant | ( | const char * | clsName | ) | const [inline, virtual] |
Determine if the dynamic type of the current instance is a descendent of the specified class. The class name is usually provided by the Class() static function of the desired class.
The PCLASSINFO macro declares an override of this function for the particular class. The user need not implement it.
| virtual Comparison PObject::Compare | ( | const PObject & | obj | ) | const [virtual] |
Compare the two objects and return their relative rank. This function is usually overridden by descendent classes to yield the ranking according to the semantics of the object.
The default function is to use the CompareObjectMemoryDirect() function to do a byte wise memory comparison of the two objects.
Reimplemented in PAbstractArray, PChannel, POrdinalKey, PHashTable, PFile, PIndirectChannel, PIPSocket::Address, PAbstractList, PAbstractSortedList, PPipeChannel, PProcess, PString, PTime, PRemoteConnection, PSafePtrBase, PSmartPointer, PTimeInterval, PASN_Null, PASN_Boolean, PASN_Integer, PASN_Enumeration, PASN_Real, PASN_ObjectId, PASN_BitString, PASN_OctetString, PASN_ConstrainedString, PASN_BMPString, PASN_Choice, PASN_Sequence, PASN_Array, PServiceMacro, PIpAccessControlEntry, and PMemoryFile.
| virtual Comparison PObject::CompareObjectMemoryDirect | ( | const PObject & | obj | ) | const [virtual] |
Determine the byte wise comparison of two objects. This is the default comparison operation for objects that do not explicitly override the Compare()# function.
The PCLASSINFO macro declares an override of this function for the particular class. The user need not implement it.
| bool PObject::operator== | ( | const PObject & | obj | ) | const [inline] |
| bool PObject::operator!= | ( | const PObject & | obj | ) | const [inline] |
| bool PObject::operator< | ( | const PObject & | obj | ) | const [inline] |
| bool PObject::operator> | ( | const PObject & | obj | ) | const [inline] |
| bool PObject::operator<= | ( | const PObject & | obj | ) | const [inline] |
| bool PObject::operator>= | ( | const PObject & | obj | ) | const [inline] |
Compare the two objects.
Reimplemented in PString.
| virtual void PObject::PrintOn | ( | ostream & | strm | ) | const [virtual] |
Output the contents of the object to the stream. The exact output is dependent on the exact semantics of the descendent class. This is primarily used by the standard operator<<# function.
The default behaviour is to print the class name.
Reimplemented in PArgList, PAbstractArray, PCharArray, PCollection, POrdinalKey, PAbstractDictionary, PIPSocket::InterfaceEntry, PString, PTime, PIntCondMutex, PThread, PTimeInterval, PASN_Null, PASN_Boolean, PASN_Integer, PASN_Enumeration, PASN_Real, PASN_ObjectId, PASN_BitString, PASN_OctetString, PASN_ConstrainedString, PASN_BMPString, PASN_Choice, PASN_Sequence, PASN_Array, PASN_Stream, PGloballyUniqueID, PIpAccessControlEntry, PMIMEInfo, PASNObject, PASNInteger, PASNString, PASNUnsignedInteger, PASNObjectID, PASNNull, and PASNSequence.
| virtual void PObject::ReadFrom | ( | istream & | strm | ) | [virtual] |
Input the contents of the object from the stream. The exact input is dependent on the exact semantics of the descendent class. This is primarily used by the standard operator>># function.
The default behaviour is to do nothing.
Reimplemented in PArgList, PAbstractArray, PCharArray, PString, PStringList, PSortedStringList, PStringSet, POrdinalToString, PStringToOrdinal, PStringToString, PTime, PTimeInterval, PGloballyUniqueID, PIpAccessControlEntry, and PMIMEInfo.
| virtual PObject* PObject::Clone | ( | ) | const [virtual] |
Create a copy of the class on the heap. The exact semantics of the descendent class determine what is required to make a duplicate of the instance. Not all classes can even { do} a clone operation.
The main user of the clone function is the PDictionary class as it requires copies of the dictionary keys.
The default behaviour is for this function to assert.
Reimplemented in PBaseArray< T >, POrdinalKey, PSet< T >, PDictionary< K, D >, POrdinalDictionary< K >, PList< T >, PQueue< T >, PStack< T >, PSortedList< T >, PString, PCaselessString, PStringDictionary< K >, PTime, PTCPSocket, PTimeInterval, PASN_Null, PASN_Boolean, PASN_Integer, PASN_Enumeration, PASN_Real, PASN_ObjectId, PASN_BitString, PASN_OctetString, PASN_BMPString, PASN_Sequence, PASN_Set, PGloballyUniqueID, PASNObject, PASNInteger, PASNString, PASNIPAddress, PASNTimeTicks, PASNCounter, PASNGauge, PASNObjectID, PASNNull, PSocks4Socket, PSocks5Socket, PSocksUDPSocket, PDictionary< POrdinalKey, PReadWriteMutex::Nest >, PList< PSafeObject >, and PList< PNotifier >.
| virtual PINDEX PObject::HashFunction | ( | ) | const [virtual] |
This function yields a hash value required by the PDictionary class. A descendent class that is required to be the key of a dictionary should override this function. The precise values returned is dependent on the semantics of the class. For example, the PString class overrides it to provide a hash function for distinguishing text strings.
The default behaviour is to return the value zero.
Reimplemented in PChannel, POrdinalKey, PString, PRemoteConnection, and PGloballyUniqueID.
| ostream& operator<< | ( | ostream & | strm, | |
| const PObject & | obj | |||
| ) | [friend] |
| istream& operator>> | ( | istream & | strm, | |
| PObject & | obj | |||
| ) | [friend] |
Global function for using the standard >> operator on objects descended from PObject. This simply calls the objects ReadFrom()# function.
1.5.1