ome-common 5.3.2

Base.h
1 /*
2 * #%L
3 * OME-XERCES C++ library for working with Xerces C++.
4 * %%
5 * Copyright © 2006 - 2015 Open Microscopy Environment:
6 * - Massachusetts Institute of Technology
7 * - National Institutes of Health
8 * - University of Dundee
9 * - Board of Regents of the University of Wisconsin-Madison
10 * - Glencoe Software, Inc.
11 * %%
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright notice,
16 * this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright notice,
18 * this list of conditions and the following disclaimer in the documentation
19 * and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 * The views and conclusions contained in the software and documentation are
34 * those of the authors and should not be interpreted as representing official
35 * policies, either expressed or implied, of any organization.
36 * #L%
37 */
38
39 #ifndef OME_COMMON_XML_DOM_BASE_H
40 #define OME_COMMON_XML_DOM_BASE_H
41
42 #include <ome/common/config.h>
43
44 #include <ome/compat/memory.h>
45
46 #include <iostream>
47 #include <stdexcept>
48
49 namespace ome
50 {
51 namespace common
52 {
53 namespace xml
54 {
55 namespace dom
56 {
57
58 namespace detail
59 {
60
61 template<typename T>
62 inline
63 void
64 unmanaged(T *)
65 {}
66
67 }
68
75 template<typename T>
76 class Base
77 {
78 public:
80 typedef Base base_type;
82 typedef T base_element_type;
83
85 Base():
86 base()
87 {}
88
95 template<typename Deleter>
96 explicit
97 Base(base_element_type *wrapped,
98 Deleter del):
99 base(wrapped ?
100 ome::compat::shared_ptr<base_element_type>(wrapped, del) :
101 ome::compat::shared_ptr<base_element_type>())
102 {}
103
109 explicit
110 Base(base_element_type *wrapped):
111 base(wrapped ?
112 ome::compat::shared_ptr<base_element_type>(wrapped, &ome::common::xml::dom::detail::unmanaged<base_element_type>) :
113 ome::compat::shared_ptr<base_element_type>())
114 {}
115
117 virtual
118 ~Base()
119 {}
120
128 base_element_type*
129 get()
130 {
131 return base.get();
132 }
133
141 const base_element_type*
142 get() const
143 {
144 return base.get();
145 }
146
152 operator bool () const
153 {
154 return get() != 0;
155 }
156
162 void
163 reset()
164 {
165 base.reset();
166 ome::compat::shared_ptr<base_element_type> n;
167 assign(n);
168 }
169
170 protected:
176 virtual
177 void
178 null_check() const
179 {
180 if (!base.get())
181 throw std::logic_error("Accessing null wrapped DOM type");
182 }
183
189 virtual
190 void
191 assign(const base_type& wrapped)
192 {
193 // Assign base directly to refcount already wrapped objects.
194 base = wrapped.base;
195 }
196
202 virtual
203 void
204 assign(ome::compat::shared_ptr<base_element_type>& wrapped)
205 {
206 base = wrapped;
207 }
208
219 template<typename D>
220 D *
221 assign_check(base_element_type *newbase)
222 {
223 D *newderived = dynamic_cast<D *>(newbase);
224 if (newbase && !newderived)
225 throw std::logic_error("Failed to assign incompatible wrapped DOM type");
226 return newderived;
227 }
228
229 private:
231 ome::compat::shared_ptr<base_element_type> base;
232 };
233
234 }
235 }
236 }
237 }
238
239 #endif // OME_COMMON_XML_DOM_BASE_H
240
241 /*
242 * Local Variables:
243 * mode:C++
244 * End:
245 */
ome::common::xml::dom::Base::Base
Base()
Constructor.
Definition: Base.h:85
ome::common::xml::dom::Base::assign
virtual void assign(ome::compat::shared_ptr< base_element_type > &wrapped)
Assign a new wrapped value.
Definition: Base.h:204
memory.h
Memory type substitution.
ome::common::xml::dom::Base::~Base
virtual ~Base()
Destructor.
Definition: Base.h:118
ome::common::xml::dom::Base::reset
void reset()
Free the managed resource.
Definition: Base.h:163
ome::common::xml::dom::Base::null_check
virtual void null_check() const
Check if the wrapped type is NULL.
Definition: Base.h:178
ome
Open Microscopy Environment C++.
Definition: base64.h:49
ome::common::xml::dom::Base::Base
Base(base_element_type *wrapped, Deleter del)
Construct with initial wrapped value (managed).
Definition: Base.h:97
ome::common::xml::dom::Base
Base of the DOM wrapper hierarchy.
Definition: Base.h:76
ome::common::xml::dom::Base::base_element_type
T base_element_type
Base element type (root type of the wrapped type).
Definition: Base.h:82
ome::common::xml::dom::Base::assign_check
D * assign_check(base_element_type *newbase)
Check that a new wrapped value is of the correct derived type.
Definition: Base.h:221
ome::common::xml::dom::Base::base_type
Base base_type
Base type.
Definition: Base.h:80
ome::common::xml::dom::Base::assign
virtual void assign(const base_type &wrapped)
Assign a new wrapped value.
Definition: Base.h:191
ome::common::xml::dom::Base::base
ome::compat::shared_ptr< base_element_type > base
Wrapped reference.
Definition: Base.h:231
ome::common::xml::dom::Base::Base
Base(base_element_type *wrapped)
Construct with initial wrapped value (unmanaged).
Definition: Base.h:110