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implbase4.hxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20/*
21 * This file is part of LibreOffice published API.
22 */
23#ifndef INCLUDED_CPPUHELPER_IMPLBASE4_HXX
24#define INCLUDED_CPPUHELPER_IMPLBASE4_HXX
25
26#include "cppuhelper/implbase_ex.hxx"
27#include "rtl/instance.hxx"
28#include "cppuhelper/weak.hxx"
29#include "cppuhelper/weakagg.hxx"
30#include "com/sun/star/lang/XTypeProvider.hpp"
31
32 namespace cppu
33{
35
36 struct class_data4
37 {
38 sal_Int16 m_nTypes;
39 sal_Bool m_storedTypeRefs;
40 sal_Bool m_storedId;
41 sal_Int8 m_id[ 16 ];
42 type_entry m_typeEntries[ 4 + 1 ];
43 };
44
45 template< typename Ifc1, typename Ifc2, typename Ifc3, typename Ifc4, typename Impl >
46 struct SAL_WARN_UNUSED ImplClassData4
47 {
48 class_data* operator ()()
49 {
50 static class_data4 s_cd =
51 {
52 4 +1, false, false,
53 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
54 {
55 CPPUHELPER_DETAIL_TYPEENTRY(Ifc1),
56 CPPUHELPER_DETAIL_TYPEENTRY(Ifc2),
57 CPPUHELPER_DETAIL_TYPEENTRY(Ifc3),
58 CPPUHELPER_DETAIL_TYPEENTRY(Ifc4),
59 CPPUHELPER_DETAIL_TYPEENTRY(css::lang::XTypeProvider)
60 }
61 };
62 return reinterpret_cast< class_data * >(&s_cd);
63 }
64 };
65
67
76 template< class Ifc1, class Ifc2, class Ifc3, class Ifc4 >
77 class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE ImplHelper4
78 : public css::lang::XTypeProvider
79 , public Ifc1, public Ifc2, public Ifc3, public Ifc4
80 {
81 struct cd : public rtl::StaticAggregate< class_data, ImplClassData4 < Ifc1, Ifc2, Ifc3, Ifc4, ImplHelper4<Ifc1, Ifc2, Ifc3, Ifc4> > > {};
82 public:
83#if defined LIBO_INTERNAL_ONLY
84 ImplHelper4() = default;
85 ImplHelper4(ImplHelper4 const &) = default;
86 ImplHelper4(ImplHelper4 &&) = default;
87 ImplHelper4 & operator =(ImplHelper4 const &) = default;
88 ImplHelper4 & operator =(ImplHelper4 &&) = default;
89#endif
90
91 virtual css::uno::Any SAL_CALL queryInterface( css::uno::Type const & rType ) SAL_OVERRIDE
92 { return ImplHelper_query( rType, cd::get(), this ); }
93 virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes() SAL_OVERRIDE
94 { return ImplHelper_getTypes( cd::get() ); }
95 virtual css::uno::Sequence< sal_Int8 > SAL_CALL getImplementationId() SAL_OVERRIDE
96 { return ImplHelper_getImplementationId( cd::get() ); }
97
98#if !defined _MSC_VER // public -> protected changes mangled names there
99 protected:
100#endif
101 ~ImplHelper4() SAL_NOEXCEPT {}
102 };
103
111 template< class Ifc1, class Ifc2, class Ifc3, class Ifc4 >
112 class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE WeakImplHelper4
113 : public OWeakObject
114 , public css::lang::XTypeProvider
115 , public Ifc1, public Ifc2, public Ifc3, public Ifc4
116 {
117 struct cd : public rtl::StaticAggregate< class_data, ImplClassData4 < Ifc1, Ifc2, Ifc3, Ifc4, WeakImplHelper4<Ifc1, Ifc2, Ifc3, Ifc4> > > {};
118 public:
119 virtual css::uno::Any SAL_CALL queryInterface( css::uno::Type const & rType ) SAL_OVERRIDE
120 { return WeakImplHelper_query( rType, cd::get(), this, static_cast<OWeakObject *>(this) ); }
121 virtual void SAL_CALL acquire() SAL_NOEXCEPT SAL_OVERRIDE
122 { OWeakObject::acquire(); }
123 virtual void SAL_CALL release() SAL_NOEXCEPT SAL_OVERRIDE
124 { OWeakObject::release(); }
125 virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes() SAL_OVERRIDE
126 { return WeakImplHelper_getTypes( cd::get() ); }
127 virtual css::uno::Sequence< sal_Int8 > SAL_CALL getImplementationId() SAL_OVERRIDE
128 { return ImplHelper_getImplementationId( cd::get() ); }
129 };
130
143 template< class Ifc1, class Ifc2, class Ifc3, class Ifc4 >
144 class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE WeakAggImplHelper4
145 : public OWeakAggObject
146 , public css::lang::XTypeProvider
147 , public Ifc1, public Ifc2, public Ifc3, public Ifc4
148 {
149 struct cd : public rtl::StaticAggregate< class_data, ImplClassData4 < Ifc1, Ifc2, Ifc3, Ifc4, WeakAggImplHelper4<Ifc1, Ifc2, Ifc3, Ifc4> > > {};
150 public:
151 virtual css::uno::Any SAL_CALL queryInterface( css::uno::Type const & rType ) SAL_OVERRIDE
152 { return OWeakAggObject::queryInterface( rType ); }
153 virtual css::uno::Any SAL_CALL queryAggregation( css::uno::Type const & rType ) SAL_OVERRIDE
154 { return WeakAggImplHelper_queryAgg( rType, cd::get(), this, static_cast<OWeakAggObject *>(this) ); }
155 virtual void SAL_CALL acquire() SAL_NOEXCEPT SAL_OVERRIDE
156 { OWeakAggObject::acquire(); }
157 virtual void SAL_CALL release() SAL_NOEXCEPT SAL_OVERRIDE
158 { OWeakAggObject::release(); }
159 virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes() SAL_OVERRIDE
160 { return WeakAggImplHelper_getTypes( cd::get() ); }
161 virtual css::uno::Sequence< sal_Int8 > SAL_CALL getImplementationId() SAL_OVERRIDE
162 { return ImplHelper_getImplementationId( cd::get() ); }
163 };
164
180 template< class BaseClass, class Ifc1, class Ifc2, class Ifc3, class Ifc4 >
181 class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE ImplInheritanceHelper4
182 : public BaseClass
183 , public Ifc1, public Ifc2, public Ifc3, public Ifc4
184 {
185 struct cd : public rtl::StaticAggregate< class_data, ImplClassData4 < Ifc1, Ifc2, Ifc3, Ifc4, ImplInheritanceHelper4<BaseClass, Ifc1, Ifc2, Ifc3, Ifc4> > > {};
186 protected:
187 template< typename T1 >
188 explicit ImplInheritanceHelper4(T1 const & arg1): BaseClass(arg1) {}
189 template< typename T1, typename T2 >
190 ImplInheritanceHelper4(T1 const & arg1, T2 const & arg2):
191 BaseClass(arg1, arg2) {}
192 template< typename T1, typename T2, typename T3 >
193 ImplInheritanceHelper4(
194 T1 const & arg1, T2 const & arg2, T3 const & arg3):
195 BaseClass(arg1, arg2, arg3) {}
196 template< typename T1, typename T2, typename T3, typename T4 >
197 ImplInheritanceHelper4(
198 T1 const & arg1, T2 const & arg2, T3 const & arg3, T4 const & arg4):
199 BaseClass(arg1, arg2, arg3, arg4) {}
200 template<
201 typename T1, typename T2, typename T3, typename T4, typename T5 >
202 ImplInheritanceHelper4(
203 T1 const & arg1, T2 const & arg2, T3 const & arg3, T4 const & arg4,
204 T5 const & arg5):
205 BaseClass(arg1, arg2, arg3, arg4, arg5) {}
206 template<
207 typename T1, typename T2, typename T3, typename T4, typename T5,
208 typename T6 >
209 ImplInheritanceHelper4(
210 T1 const & arg1, T2 const & arg2, T3 const & arg3, T4 const & arg4,
211 T5 const & arg5, T6 const & arg6):
212 BaseClass(arg1, arg2, arg3, arg4, arg5, arg6) {}
213 public:
214 ImplInheritanceHelper4() {}
215 virtual css::uno::Any SAL_CALL queryInterface( css::uno::Type const & rType ) SAL_OVERRIDE
216 {
217 css::uno::Any aRet( ImplHelper_queryNoXInterface( rType, cd::get(), this ) );
218 if (aRet.hasValue())
219 return aRet;
220 return BaseClass::queryInterface( rType );
221 }
222 virtual void SAL_CALL acquire() SAL_NOEXCEPT SAL_OVERRIDE
223 { BaseClass::acquire(); }
224 virtual void SAL_CALL release() SAL_NOEXCEPT SAL_OVERRIDE
225 { BaseClass::release(); }
226 virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes() SAL_OVERRIDE
227 { return ImplInhHelper_getTypes( cd::get(), BaseClass::getTypes() ); }
228 virtual css::uno::Sequence< sal_Int8 > SAL_CALL getImplementationId() SAL_OVERRIDE
229 { return ImplHelper_getImplementationId( cd::get() ); }
230 };
231
248 template< class BaseClass, class Ifc1, class Ifc2, class Ifc3, class Ifc4 >
249 class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE AggImplInheritanceHelper4
250 : public BaseClass
251 , public Ifc1, public Ifc2, public Ifc3, public Ifc4
252 {
253 struct cd : public rtl::StaticAggregate< class_data, ImplClassData4 < Ifc1, Ifc2, Ifc3, Ifc4, AggImplInheritanceHelper4<BaseClass, Ifc1, Ifc2, Ifc3, Ifc4> > > {};
254 protected:
255 template< typename T1 >
256 explicit AggImplInheritanceHelper4(T1 const & arg1): BaseClass(arg1) {}
257 template< typename T1, typename T2 >
258 AggImplInheritanceHelper4(T1 const & arg1, T2 const & arg2):
259 BaseClass(arg1, arg2) {}
260 template< typename T1, typename T2, typename T3 >
261 AggImplInheritanceHelper4(
262 T1 const & arg1, T2 const & arg2, T3 const & arg3):
263 BaseClass(arg1, arg2, arg3) {}
264 template< typename T1, typename T2, typename T3, typename T4 >
265 AggImplInheritanceHelper4(
266 T1 const & arg1, T2 const & arg2, T3 const & arg3, T4 const & arg4):
267 BaseClass(arg1, arg2, arg3, arg4) {}
268 template<
269 typename T1, typename T2, typename T3, typename T4, typename T5 >
270 AggImplInheritanceHelper4(
271 T1 const & arg1, T2 const & arg2, T3 const & arg3, T4 const & arg4,
272 T5 const & arg5):
273 BaseClass(arg1, arg2, arg3, arg4, arg5) {}
274 template<
275 typename T1, typename T2, typename T3, typename T4, typename T5,
276 typename T6 >
277 AggImplInheritanceHelper4(
278 T1 const & arg1, T2 const & arg2, T3 const & arg3, T4 const & arg4,
279 T5 const & arg5, T6 const & arg6):
280 BaseClass(arg1, arg2, arg3, arg4, arg5, arg6) {}
281 public:
282 AggImplInheritanceHelper4() {}
283 virtual css::uno::Any SAL_CALL queryInterface( css::uno::Type const & rType ) SAL_OVERRIDE
284 { return BaseClass::queryInterface( rType ); }
285 virtual css::uno::Any SAL_CALL queryAggregation( css::uno::Type const & rType ) SAL_OVERRIDE
286 {
287 css::uno::Any aRet( ImplHelper_queryNoXInterface( rType, cd::get(), this ) );
288 if (aRet.hasValue())
289 return aRet;
290 return BaseClass::queryAggregation( rType );
291 }
292 virtual void SAL_CALL acquire() SAL_NOEXCEPT SAL_OVERRIDE
293 { BaseClass::acquire(); }
294 virtual void SAL_CALL release() SAL_NOEXCEPT SAL_OVERRIDE
295 { BaseClass::release(); }
296 virtual css::uno::Sequence< css::uno::Type > SAL_CALL getTypes() SAL_OVERRIDE
297 { return ImplInhHelper_getTypes( cd::get(), BaseClass::getTypes() ); }
298 virtual css::uno::Sequence< sal_Int8 > SAL_CALL getImplementationId() SAL_OVERRIDE
299 { return ImplHelper_getImplementationId( cd::get() ); }
300 };
301}
302
303#endif
304
305/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
SAL_NOEXCEPT
#define SAL_NOEXCEPT
Macro for C++11 "noexcept" vs.
Definition types.h:434
SAL_NO_VTABLE
#define SAL_NO_VTABLE
Use this for pure virtual classes, e.g.
Definition types.h:312
sal_Bool
unsigned char sal_Bool
Definition types.h:38
SAL_OVERRIDE
#define SAL_OVERRIDE
C++11 "override" feature.
Definition types.h:409
sal_Int8
signed char sal_Int8
Definition types.h:43
SAL_WARN_UNUSED
#define SAL_WARN_UNUSED
Annotate classes where a compiler should warn if an instance is unused.
Definition types.h:611
instance.hxx
weakagg.hxx
implbase_ex.hxx
weak.hxx
cppu
Definition Enterable.hxx:31
rtl::StaticAggregate
Helper class for a late-initialized static aggregate, e.g.
Definition instance.hxx:548
rtl::StaticAggregate< class_data, ImplClassData4< Ifc1, Ifc2, Ifc3, Ifc4, ImplHelper4< Ifc1, Ifc2, Ifc3, Ifc4 > > >::get
static class_data * get()
Definition instance.hxx:556
com::sun::star::uno::Sequence
Template C++ class representing an IDL sequence.
Definition Sequence.h:61
cppu::ImplHelper4
Implementation helper implementing interface css::lang::XTypeProvider and method XInterface::queryInt...
Definition implbase4.hxx:80
cppu::ImplHelper4::getImplementationId
virtual css::uno::Sequence< sal_Int8 > getImplementationId() SAL_OVERRIDE
Definition implbase4.hxx:95
cppu::ImplHelper4::queryInterface
virtual css::uno::Any queryInterface(css::uno::Type const &rType) SAL_OVERRIDE
Definition implbase4.hxx:91
cppu::ImplHelper4::getTypes
virtual css::uno::Sequence< css::uno::Type > getTypes() SAL_OVERRIDE
Definition implbase4.hxx:93
cppu::ImplHelper4::~ImplHelper4
~ImplHelper4() SAL_NOEXCEPT
Definition implbase4.hxx:101
cppu::WeakImplHelper4
Implementation helper implementing interfaces css::lang::XTypeProvider and css::uno::XInterface which...
Definition implbase4.hxx:116
cppu::WeakImplHelper4::getImplementationId
virtual css::uno::Sequence< sal_Int8 > getImplementationId() SAL_OVERRIDE
Definition implbase4.hxx:127
cppu::WeakImplHelper4::getTypes
virtual css::uno::Sequence< css::uno::Type > getTypes() SAL_OVERRIDE
Definition implbase4.hxx:125
cppu::WeakImplHelper4::release
virtual void release() SAL_NOEXCEPT SAL_OVERRIDE
decreasing m_refCount
Definition implbase4.hxx:123
cppu::WeakImplHelper4::queryInterface
virtual css::uno::Any queryInterface(css::uno::Type const &rType) SAL_OVERRIDE
Basic queryInterface() implementation supporting com::sun::star::uno::XWeak and com::sun::star::uno::...
Definition implbase4.hxx:119
cppu::WeakImplHelper4::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
increasing m_refCount
Definition implbase4.hxx:121
cppu::WeakAggImplHelper4
Implementation helper implementing interfaces css::lang::XTypeProvider and css::uno::XInterface which...
Definition implbase4.hxx:148
cppu::WeakAggImplHelper4::queryInterface
virtual css::uno::Any queryInterface(css::uno::Type const &rType) SAL_OVERRIDE
If a delegator is set, then the delegator is queried for the demanded interface.
Definition implbase4.hxx:151
cppu::WeakAggImplHelper4::release
virtual void release() SAL_NOEXCEPT SAL_OVERRIDE
If a delegator is set, then the delegators gets released.
Definition implbase4.hxx:157
cppu::WeakAggImplHelper4::queryAggregation
virtual css::uno::Any queryAggregation(css::uno::Type const &rType) SAL_OVERRIDE
Called by the delegator or queryInterface.
Definition implbase4.hxx:153
cppu::WeakAggImplHelper4::getImplementationId
virtual css::uno::Sequence< sal_Int8 > getImplementationId() SAL_OVERRIDE
Definition implbase4.hxx:161
cppu::WeakAggImplHelper4::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
If a delegator is set, then the delegators gets acquired.
Definition implbase4.hxx:155
cppu::WeakAggImplHelper4::getTypes
virtual css::uno::Sequence< css::uno::Type > getTypes() SAL_OVERRIDE
Definition implbase4.hxx:159
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3, T4 const &arg4, T5 const &arg5, T6 const &arg6)
Definition implbase4.hxx:209
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4()
Definition implbase4.hxx:214
cppu::ImplInheritanceHelper4::queryInterface
virtual css::uno::Any queryInterface(css::uno::Type const &rType) SAL_OVERRIDE
Definition implbase4.hxx:215
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3, T4 const &arg4)
Definition implbase4.hxx:197
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4(T1 const &arg1)
Definition implbase4.hxx:188
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3)
Definition implbase4.hxx:193
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4(T1 const &arg1, T2 const &arg2)
Definition implbase4.hxx:190
cppu::ImplInheritanceHelper4::release
virtual void release() SAL_NOEXCEPT SAL_OVERRIDE
Definition implbase4.hxx:224
cppu::ImplInheritanceHelper4::getTypes
virtual css::uno::Sequence< css::uno::Type > getTypes() SAL_OVERRIDE
Definition implbase4.hxx:226
cppu::ImplInheritanceHelper4::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
Definition implbase4.hxx:222
cppu::ImplInheritanceHelper4::ImplInheritanceHelper4
ImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3, T4 const &arg4, T5 const &arg5)
Definition implbase4.hxx:202
cppu::ImplInheritanceHelper4::getImplementationId
virtual css::uno::Sequence< sal_Int8 > getImplementationId() SAL_OVERRIDE
Definition implbase4.hxx:228
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4(T1 const &arg1)
Definition implbase4.hxx:256
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3, T4 const &arg4, T5 const &arg5)
Definition implbase4.hxx:270
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3, T4 const &arg4)
Definition implbase4.hxx:265
cppu::AggImplInheritanceHelper4::getImplementationId
virtual css::uno::Sequence< sal_Int8 > getImplementationId() SAL_OVERRIDE
Definition implbase4.hxx:298
cppu::AggImplInheritanceHelper4::queryInterface
virtual css::uno::Any queryInterface(css::uno::Type const &rType) SAL_OVERRIDE
Definition implbase4.hxx:283
cppu::AggImplInheritanceHelper4::queryAggregation
virtual css::uno::Any queryAggregation(css::uno::Type const &rType) SAL_OVERRIDE
Definition implbase4.hxx:285
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3)
Definition implbase4.hxx:261
cppu::AggImplInheritanceHelper4::release
virtual void release() SAL_NOEXCEPT SAL_OVERRIDE
Definition implbase4.hxx:294
cppu::AggImplInheritanceHelper4::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
Definition implbase4.hxx:292
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4(T1 const &arg1, T2 const &arg2, T3 const &arg3, T4 const &arg4, T5 const &arg5, T6 const &arg6)
Definition implbase4.hxx:277
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4(T1 const &arg1, T2 const &arg2)
Definition implbase4.hxx:258
cppu::AggImplInheritanceHelper4::getTypes
virtual css::uno::Sequence< css::uno::Type > getTypes() SAL_OVERRIDE
Definition implbase4.hxx:296
cppu::AggImplInheritanceHelper4::AggImplInheritanceHelper4
AggImplInheritanceHelper4()
Definition implbase4.hxx:282
cppu::OWeakObject::OWeakObject
OWeakObject()
Default Constructor.
Definition weak.hxx:100
cppu::OWeakObject::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
increasing m_refCount
cppu::OWeakObject::release
virtual void release() SAL_NOEXCEPT SAL_OVERRIDE
decreasing m_refCount
cppu::OWeakAggObject::acquire
virtual void acquire() SAL_NOEXCEPT SAL_OVERRIDE
If a delegator is set, then the delegators gets acquired.
cppu::OWeakAggObject::OWeakAggObject
OWeakAggObject()
Constructor.
Definition weakagg.hxx:52
cppu::OWeakAggObject::queryInterface
virtual css::uno::Any queryInterface(const css::uno::Type &rType) SAL_OVERRIDE
If a delegator is set, then the delegator is queried for the demanded interface.
cppu::OWeakAggObject::release
virtual void release() SAL_NOEXCEPT SAL_OVERRIDE
If a delegator is set, then the delegators gets released.
com::sun::star::uno::Any
C++ class representing an IDL any.
Definition Any.h:58
com::sun::star::uno::Any::hasValue
bool hasValue() const
Tests if any contains a value.
Definition Any.h:193
com::sun::star::uno::Type
C++ class representing an IDL meta type.
Definition Type.h:59