| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| #ifndef _COM_SUN_STAR_UNO_REFERENCE_H_ |
| #define _COM_SUN_STAR_UNO_REFERENCE_H_ |
| |
| #include <rtl/alloc.h> |
| |
| |
| namespace com |
| { |
| namespace sun |
| { |
| namespace star |
| { |
| namespace uno |
| { |
| |
| class RuntimeException; |
| class XInterface; |
| class Type; |
| class Any; |
| |
| /** Enum defining UNO_REF_NO_ACQUIRE for setting reference without acquiring a given interface. |
| Deprecated, please use SAL_NO_ACQUIRE. |
| @deprecated |
| */ |
| enum UnoReference_NoAcquire |
| { |
| /** This enum value can be used for creating a reference granting a given interface, |
| i.e. transferring ownership to it. |
| */ |
| UNO_REF_NO_ACQUIRE |
| }; |
| |
| /** This base class serves as a base class for all template reference classes and |
| has been introduced due to compiler problems with templated operators ==, =!. |
| */ |
| class BaseReference |
| { |
| protected: |
| /** the interface pointer |
| */ |
| XInterface * _pInterface; |
| |
| /** Queries given interface for type rType. |
| |
| @param pInterface interface pointer |
| @param rType interface type |
| @return interface of demanded type (may be null) |
| */ |
| inline static XInterface * SAL_CALL iquery( XInterface * pInterface, const Type & rType ) |
| SAL_THROW( (RuntimeException) ); |
| #ifndef EXCEPTIONS_OFF |
| /** Queries given interface for type rType. |
| Throws a RuntimeException if the demanded interface cannot be queried. |
| |
| @param pInterface interface pointer |
| @param rType interface type |
| @return interface of demanded type |
| */ |
| inline static XInterface * SAL_CALL iquery_throw( XInterface * pInterface, const Type & rType ) |
| SAL_THROW( (RuntimeException) ); |
| #endif |
| |
| public: |
| /** Gets interface pointer. This call does not acquire the interface. |
| |
| @return UNacquired interface pointer |
| */ |
| inline XInterface * SAL_CALL get() const SAL_THROW( () ) |
| { return _pInterface; } |
| |
| /** Checks if reference is null. |
| |
| @return true if reference acquires an interface, i.e. true if it is not null |
| */ |
| inline sal_Bool SAL_CALL is() const SAL_THROW( () ) |
| { return (0 != _pInterface); } |
| |
| /** Equality operator: compares two interfaces |
| Checks if both references are null or refer to the same object. |
| |
| @param rRef another interface |
| @return true if both references are null or refer to the same object, false otherwise |
| */ |
| inline sal_Bool SAL_CALL operator == ( XInterface * pInterface ) const SAL_THROW( () ); |
| /** Unequality operator: compares two interfaces |
| Checks if both references are null or refer to the same object. |
| |
| @param rRef another interface |
| @return false if both references are null or refer to the same object, true otherwise |
| */ |
| inline sal_Bool SAL_CALL operator != ( XInterface * pInterface ) const SAL_THROW( () ); |
| |
| /** Equality operator: compares two interfaces |
| Checks if both references are null or refer to the same object. |
| |
| @param rRef another reference |
| @return true if both references are null or refer to the same object, false otherwise |
| */ |
| inline sal_Bool SAL_CALL operator == ( const BaseReference & rRef ) const SAL_THROW( () ); |
| /** Unequality operator: compares two interfaces |
| Checks if both references are null or refer to the same object. |
| |
| @param rRef another reference |
| @return false if both references are null or refer to the same object, true otherwise |
| */ |
| inline sal_Bool SAL_CALL operator != ( const BaseReference & rRef ) const SAL_THROW( () ); |
| |
| /** Needed by some STL containers. |
| |
| @param rRef another reference |
| @return true, if this reference is less than rRef |
| */ |
| inline sal_Bool SAL_CALL operator < ( const BaseReference & rRef ) const SAL_THROW( () ); |
| }; |
| |
| /** Enum defining UNO_QUERY and UNO_REF_QUERY for implicit interface query. |
| */ |
| enum UnoReference_Query |
| { |
| /** This enum value can be used for implicit interface query. |
| */ |
| UNO_QUERY, |
| /** This enum value can be used for implicit interface query. |
| */ |
| UNO_REF_QUERY |
| }; |
| #ifndef EXCEPTIONS_OFF |
| /** Enum defining UNO_QUERY_THROW and UNO_REF_QUERY_THROW for implicit interface query. |
| If the demanded interface is unavailable, then a RuntimeException is thrown. |
| */ |
| enum UnoReference_QueryThrow |
| { |
| /** This enum value can be used for implicit interface query. |
| */ |
| UNO_QUERY_THROW, |
| /** This enum value can be used for implicit interface query. |
| */ |
| UNO_REF_QUERY_THROW |
| }; |
| /** Enum defining UNO_SET_THROW for throwing if attempts are made to assign a <NULL/> |
| interface |
| |
| @since UDK 3.2.8 |
| */ |
| enum UnoReference_SetThrow |
| { |
| UNO_SET_THROW |
| }; |
| #endif |
| |
| /** Template reference class for interface type derived from BaseReference. |
| A special constructor given the UNO_QUERY or UNO_REF_QUERY identifier queries interfaces |
| for reference type. |
| */ |
| template< class interface_type > |
| class Reference : public BaseReference |
| { |
| /** Queries given interface for type interface_type. |
| |
| @param pInterface interface pointer |
| @return interface of demanded type (may be null) |
| */ |
| inline static XInterface * SAL_CALL iquery( XInterface * pInterface ) |
| SAL_THROW( (RuntimeException) ); |
| #ifndef EXCEPTIONS_OFF |
| /** Queries given interface for type interface_type. |
| Throws a RuntimeException if the demanded interface cannot be queried. |
| |
| @param pInterface interface pointer |
| @return interface of demanded type |
| */ |
| inline static XInterface * SAL_CALL iquery_throw( XInterface * pInterface ) |
| SAL_THROW( (RuntimeException) ); |
| /** Returns the given interface if it is not <NULL/>, throws a RuntimeException otherwise. |
| |
| @param pInterface interface pointer |
| @return pInterface |
| */ |
| inline static interface_type * SAL_CALL iset_throw( interface_type * pInterface ) |
| SAL_THROW( (RuntimeException) ); |
| #endif |
| |
| /** Cast from an "interface pointer" (e.g., BaseReference::_pInterface) to a |
| pointer to this interface_type. |
| |
| To work around ambiguities in the case of multiple-inheritance interface |
| types (which inherit XInterface more than once), use reinterpret_cast |
| (resp. a sequence of two static_casts, to avoid warnings about |
| reinterpret_cast used between related classes) to switch from a pointer |
| to XInterface to a pointer to this derived interface_type. In |
| principle, this is not guaranteed to work. In practice, it seems to |
| work on all supported platforms. |
| */ |
| static inline interface_type * castFromXInterface(XInterface * p) { |
| return static_cast< interface_type * >(static_cast< void * >(p)); |
| } |
| |
| /** Cast from a pointer to this interface_type to an "interface pointer" |
| (e.g., BaseReference::_pInterface). |
| |
| To work around ambiguities in the case of multiple-inheritance interface |
| types (which inherit XInterface more than once), use reinterpret_cast |
| (resp. a sequence of two static_casts, to avoid warnings about |
| reinterpret_cast used between related classes) to switch from a pointer |
| to this derived interface_type to a pointer to XInterface. In |
| principle, this is not guaranteed to work. In practice, it seems to |
| work on all supported platforms. |
| */ |
| static inline XInterface * castToXInterface(interface_type * p) { |
| return static_cast< XInterface * >(static_cast< void * >(p)); |
| } |
| |
| public: |
| // these are here to force memory de/allocation to sal lib. |
| /** @internal */ |
| inline static void * SAL_CALL operator new ( size_t nSize ) SAL_THROW( () ) |
| { return ::rtl_allocateMemory( nSize ); } |
| /** @internal */ |
| inline static void SAL_CALL operator delete ( void * pMem ) SAL_THROW( () ) |
| { ::rtl_freeMemory( pMem ); } |
| /** @internal */ |
| inline static void * SAL_CALL operator new ( size_t, void * pMem ) SAL_THROW( () ) |
| { return pMem; } |
| /** @internal */ |
| inline static void SAL_CALL operator delete ( void *, void * ) SAL_THROW( () ) |
| {} |
| |
| /** Destructor: Releases interface if set. |
| */ |
| inline ~Reference() SAL_THROW( () ); |
| |
| /** Default Constructor: Sets null reference. |
| */ |
| inline Reference() SAL_THROW( () ); |
| |
| /** Copy constructor: Copies interface reference. |
| |
| @param rRef another reference |
| */ |
| inline Reference( const Reference< interface_type > & rRef ) SAL_THROW( () ); |
| /** Constructor: Sets given interface pointer. |
| |
| @param pInterface an interface pointer |
| */ |
| inline Reference( interface_type * pInterface ) SAL_THROW( () ); |
| |
| /** Constructor: Sets given interface pointer without acquiring it. |
| |
| @param pInterface another reference |
| @param dummy SAL_NO_ACQUIRE to force obvious distinction to other constructors |
| */ |
| inline Reference( interface_type * pInterface, __sal_NoAcquire ) SAL_THROW( () ); |
| /** Constructor: Sets given interface pointer without acquiring it. |
| Deprecated, please use SAL_NO_ACQUIRE version. |
| |
| @deprecated |
| @param pInterface another reference |
| @param dummy UNO_REF_NO_ACQUIRE to force obvious distinction to other constructors |
| */ |
| inline Reference( interface_type * pInterface, UnoReference_NoAcquire ) SAL_THROW( () ); |
| |
| /** Constructor: Queries given interface for reference interface type (interface_type). |
| |
| @param rRef another reference |
| @param dummy UNO_QUERY or UNO_REF_QUERY to force obvious distinction to other constructors |
| */ |
| inline Reference( const BaseReference & rRef, UnoReference_Query ) SAL_THROW( (RuntimeException) ); |
| /** Constructor: Queries given interface for reference interface type (interface_type). |
| |
| @param pInterface an interface pointer |
| @param dummy UNO_QUERY to force obvious distinction to other constructors |
| */ |
| inline Reference( XInterface * pInterface, UnoReference_Query ) SAL_THROW( (RuntimeException) ); |
| /** Constructor: Queries given any for reference interface type (interface_type). |
| |
| @param rAny an any |
| @param dummy UNO_QUERY to force obvious distinction to other constructors |
| */ |
| inline Reference( const Any & rAny, UnoReference_Query ) SAL_THROW( (RuntimeException) ); |
| #ifndef EXCEPTIONS_OFF |
| /** Constructor: Queries given interface for reference interface type (interface_type). |
| Throws a RuntimeException if the demanded interface cannot be queried. |
| |
| @param rRef another reference |
| @param dummy UNO_QUERY_THROW or UNO_REF_QUERY_THROW to force obvious distinction |
| to other constructors |
| */ |
| inline Reference( const BaseReference & rRef, UnoReference_QueryThrow ) SAL_THROW( (RuntimeException) ); |
| /** Constructor: Queries given interface for reference interface type (interface_type). |
| Throws a RuntimeException if the demanded interface cannot be queried. |
| |
| @param pInterface an interface pointer |
| @param dummy UNO_QUERY_THROW or UNO_REF_QUERY_THROW to force obvious distinction |
| to other constructors |
| */ |
| inline Reference( XInterface * pInterface, UnoReference_QueryThrow ) SAL_THROW( (RuntimeException) ); |
| /** Constructor: Queries given any for reference interface type (interface_type). |
| Throws a RuntimeException if the demanded interface cannot be queried. |
| |
| @param rAny an any |
| @param dummy UNO_QUERY_THROW or UNO_REF_QUERY_THROW to force obvious distinction |
| to other constructors |
| */ |
| inline Reference( const Any & rAny, UnoReference_QueryThrow ) SAL_THROW( (RuntimeException) ); |
| /** Constructor: assigns from the given interface of the same type. Throws a RuntimeException |
| if the source interface is <NULL/>. |
| |
| @param rRef another interface reference of the same type |
| @param dummy UNO_SET_THROW to distinguish from default copy constructor |
| |
| @since UDK 3.2.8 |
| */ |
| inline Reference( const Reference< interface_type > & rRef, UnoReference_SetThrow ) SAL_THROW( (RuntimeException) ); |
| /** Constructor: assigns from the given interface of the same type. Throws a RuntimeException |
| if the source interface is <NULL/>. |
| |
| @param pInterface an interface pointer |
| @param dummy UNO_SET_THROW to distinguish from default assignment constructor |
| |
| @since UDK 3.2.8 |
| */ |
| inline Reference( interface_type * pInterface, UnoReference_SetThrow ) SAL_THROW( (RuntimeException) ); |
| #endif |
| |
| /** Cast operator to Reference< XInterface >: Reference objects are binary compatible and |
| any interface must be derived from com.sun.star.uno.XInterface. |
| This a useful direct cast possibility. |
| */ |
| inline SAL_CALL operator const Reference< XInterface > & () const SAL_THROW( () ) |
| { return * reinterpret_cast< const Reference< XInterface > * >( this ); } |
| |
| /** Dereference operator: Used to call interface methods. |
| |
| @return UNacquired interface pointer |
| */ |
| inline interface_type * SAL_CALL operator -> () const SAL_THROW( () ) |
| { return castFromXInterface(_pInterface); } |
| |
| /** Gets interface pointer. This call does not acquire the interface. |
| |
| @return UNacquired interface pointer |
| */ |
| inline interface_type * SAL_CALL get() const SAL_THROW( () ) |
| { return castFromXInterface(_pInterface); } |
| |
| /** Clears reference, i.e. releases interface. Reference is null after clear() call. |
| */ |
| inline void SAL_CALL clear() SAL_THROW( () ); |
| |
| /** Sets the given interface. An interface already set will be released. |
| |
| @param rRef another reference |
| @return true, if non-null interface was set |
| */ |
| inline sal_Bool SAL_CALL set( const Reference< interface_type > & rRef ) SAL_THROW( () ); |
| /** Sets the given interface. An interface already set will be released. |
| |
| @param pInterface another interface |
| @return true, if non-null interface was set |
| */ |
| inline sal_Bool SAL_CALL set( interface_type * pInterface ) SAL_THROW( () ); |
| |
| /** Sets interface pointer without acquiring it. An interface already set will be released. |
| |
| @param pInterface an interface pointer |
| @param dummy SAL_NO_ACQUIRE to force obvious distinction to set methods |
| @return true, if non-null interface was set |
| */ |
| inline sal_Bool SAL_CALL set( interface_type * pInterface, __sal_NoAcquire ) SAL_THROW( () ); |
| /** Sets interface pointer without acquiring it. An interface already set will be released. |
| Deprecated, please use SAL_NO_ACQUIRE version. |
| |
| @deprecated |
| @param pInterface an interface pointer |
| @param dummy UNO_REF_NO_ACQUIRE to force obvious distinction to set methods |
| @return true, if non-null interface was set |
| */ |
| inline sal_Bool SAL_CALL set( interface_type * pInterface, UnoReference_NoAcquire ) SAL_THROW( () ); |
| |
| /** Queries given interface for reference interface type (interface_type) and sets it. |
| An interface already set will be released. |
| |
| @param pInterface an interface pointer |
| @param dummy UNO_QUERY or UNO_REF_QUERY to force obvious distinction to set methods |
| @return true, if non-null interface was set |
| */ |
| inline sal_Bool SAL_CALL set( XInterface * pInterface, UnoReference_Query ) SAL_THROW( (RuntimeException) ); |
| /** Queries given interface for reference interface type (interface_type) and sets it. |
| An interface already set will be released. |
| |
| @param rRef another reference |
| @param dummy UNO_QUERY or UNO_REF_QUERY to force obvious distinction to set methods |
| @return true, if non-null interface was set |
| */ |
| inline sal_Bool SAL_CALL set( const BaseReference & rRef, UnoReference_Query ) SAL_THROW( (RuntimeException) ); |
| |
| /** Queries given any for reference interface type (interface_type) |
| and sets it. An interface already set will be released. |
| |
| @param rAny |
| an Any containing an interface |
| @param dummy |
| UNO_QUERY or UNO_REF_QUERY to force obvious distinction |
| to set methods |
| @return |
| true, if non-null interface was set |
| */ |
| inline bool set( Any const & rAny, UnoReference_Query ); |
| |
| #ifndef EXCEPTIONS_OFF |
| /** Queries given interface for reference interface type (interface_type) and sets it. |
| An interface already set will be released. |
| Throws a RuntimeException if the demanded interface cannot be set. |
| |
| @param pInterface an interface pointer |
| @param dummy UNO_QUERY_THROW or UNO_REF_QUERY_THROW to force obvious distinction |
| to set methods |
| */ |
| inline void SAL_CALL set( XInterface * pInterface, UnoReference_QueryThrow ) SAL_THROW( (RuntimeException) ); |
| /** Queries given interface for reference interface type (interface_type) and sets it. |
| An interface already set will be released. |
| Throws a RuntimeException if the demanded interface cannot be set. |
| |
| @param rRef another reference |
| @param dummy UNO_QUERY_THROW or UNO_REF_QUERY_THROW to force obvious distinction |
| to set methods |
| */ |
| inline void SAL_CALL set( const BaseReference & rRef, UnoReference_QueryThrow ) SAL_THROW( (RuntimeException) ); |
| |
| /** Queries given any for reference interface type (interface_type) and |
| sets it. An interface already set will be released. |
| Throws a RuntimeException if the demanded interface cannot be set. |
| |
| @param rAny |
| an Any containing an interface |
| @param dummy |
| UNO_QUERY_THROW or UNO_REF_QUERY_THROW to force obvious |
| distinction to set methods |
| */ |
| inline void set( Any const & rAny, UnoReference_QueryThrow ); |
| /** sets the given interface |
| An interface already set will be released. |
| Throws a RuntimeException if the source interface is <NULL/>. |
| |
| @param pInterface an interface pointer |
| @param dummy UNO_SET_THROW to force obvious distinction to other set methods |
| |
| @since UDK 3.2.8 |
| */ |
| inline void SAL_CALL set( interface_type * pInterface, UnoReference_SetThrow ) SAL_THROW( (RuntimeException) ); |
| /** sets the given interface |
| An interface already set will be released. |
| Throws a RuntimeException if the source interface is <NULL/>. |
| |
| @param rRef an interface reference |
| @param dummy UNO_SET_THROW to force obvious distinction to other set methods |
| |
| @since UDK 3.2.8 |
| */ |
| inline void SAL_CALL set( const Reference< interface_type > & rRef, UnoReference_SetThrow ) SAL_THROW( (RuntimeException) ); |
| |
| #endif |
| |
| /** Assignment operator: Acquires given interface pointer and sets reference. |
| An interface already set will be released. |
| |
| @param pInterface an interface pointer |
| @return this reference |
| */ |
| inline Reference< interface_type > & SAL_CALL operator = ( interface_type * pInterface ) SAL_THROW( () ); |
| /** Assignment operator: Acquires given interface reference and sets reference. |
| An interface already set will be released. |
| |
| @param rRef an interface reference |
| @return this reference |
| */ |
| inline Reference< interface_type > & SAL_CALL operator = ( const Reference< interface_type > & rRef ) SAL_THROW( () ); |
| |
| /** Queries given interface reference for type interface_type. |
| |
| @param rRef interface reference |
| @return interface reference of demanded type (may be null) |
| */ |
| inline static Reference< interface_type > SAL_CALL query( const BaseReference & rRef ) SAL_THROW( (RuntimeException) ); |
| /** Queries given interface for type interface_type. |
| |
| @param pInterface interface pointer |
| @return interface reference of demanded type (may be null) |
| */ |
| inline static Reference< interface_type > SAL_CALL query( XInterface * pInterface ) SAL_THROW( (RuntimeException) ); |
| }; |
| |
| /** @internal |
| Enables boost::mem_fn and boost::bind to recognize Reference. |
| */ |
| template <typename T> |
| inline T * get_pointer( Reference<T> const& r ) |
| { |
| return r.get(); |
| } |
| |
| } |
| } |
| } |
| } |
| |
| #endif |