tmpI.H 6.32 KB
Newer Older
1
2
3
4
/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
5
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
6
7
8
9
10
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

11
12
13
14
    OpenFOAM 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 3 of the License, or
    (at your option) any later version.
15
16
17
18
19
20
21

    OpenFOAM 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
22
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
23
24
25
26
27
28
29
30

\*---------------------------------------------------------------------------*/

#include "error.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class T>
Mark Olesen's avatar
Mark Olesen committed
31
inline Foam::tmp<T>::tmp(T* tPtr)
32
33
34
35
36
37
38
39
:
    isTmp_(true),
    ptr_(tPtr),
    ref_(*tPtr)
{}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
40
inline Foam::tmp<T>::tmp(const T& tRef)
41
42
:
    isTmp_(false),
Mark Olesen's avatar
Mark Olesen committed
43
    ptr_(0),
44
45
46
47
48
    ref_(tRef)
{}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
49
inline Foam::tmp<T>::tmp(const tmp<T>& t)
50
51
52
53
54
55
56
57
58
59
60
61
62
:
    isTmp_(t.isTmp_),
    ptr_(t.ptr_),
    ref_(t.ref_)
{
    if (isTmp_)
    {
        if (ptr_)
        {
            ptr_->operator++();
        }
        else
        {
63
            FatalErrorIn("Foam::tmp<T>::tmp(const tmp<T>&)")
64
65
66
67
68
69
70
                << "attempted copy of a deallocated temporary"
                << abort(FatalError);
        }
    }
}


71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
template<class T>
inline Foam::tmp<T>::tmp(const tmp<T>& t, bool allowTransfer)
:
    isTmp_(t.isTmp_),
    ptr_(t.ptr_),
    ref_(t.ref_)
{
    if (isTmp_)
    {
        if (allowTransfer)
        {
            const_cast<tmp<T>&>(t).ptr_ = 0;
        }
        else
        {
            if (ptr_)
            {
                ptr_->operator++();
            }
            else
            {
                FatalErrorIn
                (
                    "Foam::tmp<T>::tmp(const tmp<T>&, bool allowTransfer)"
                )   << "attempted copy of a deallocated temporary"
                    << abort(FatalError);
            }
        }
    }
}


103
template<class T>
Mark Olesen's avatar
Mark Olesen committed
104
inline Foam::tmp<T>::~tmp()
105
106
107
108
109
110
{
    if (isTmp_ && ptr_)
    {
        if (ptr_->okToDelete())
        {
            delete ptr_;
Mark Olesen's avatar
Mark Olesen committed
111
            ptr_ = 0;
112
113
114
115
116
117
118
119
120
121
122
123
        }
        else
        {
            ptr_->operator--();
        }
    }
}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class T>
Mark Olesen's avatar
Mark Olesen committed
124
inline bool Foam::tmp<T>::isTmp() const
125
126
127
128
129
{
    return isTmp_;
}


130
131
132
133
134
135
136
template<class T>
inline bool Foam::tmp<T>::empty() const
{
    return (isTmp_ && !ptr_);
}


137
template<class T>
Mark Olesen's avatar
Mark Olesen committed
138
inline bool Foam::tmp<T>::valid() const
139
140
141
142
143
144
{
    return (!isTmp_ || (isTmp_ && ptr_));
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
145
inline T* Foam::tmp<T>::ptr() const
146
147
148
149
150
{
    if (isTmp_)
    {
         if (!ptr_)
         {
151
             FatalErrorIn("Foam::tmp<T>::ptr() const")
152
153
154
155
156
                 << "temporary deallocated"
                 << abort(FatalError);
         }

         T* ptr = ptr_;
Mark Olesen's avatar
Mark Olesen committed
157
         ptr_ = 0;
158
159
160
161
162
163
164
165
166
167
168
169
170

         ptr->resetRefCount();

         return ptr;
    }
    else
    {
        return new T(ref_);
    }
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
171
inline void Foam::tmp<T>::clear() const
172
{
173
    if (isTmp_ && ptr_)  // skip this bit:  && ptr_->okToDelete())
174
175
    {
        delete ptr_;
Mark Olesen's avatar
Mark Olesen committed
176
        ptr_ = 0;
177
178
179
180
181
182
183
    }
}


// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //

template<class T>
Mark Olesen's avatar
Mark Olesen committed
184
inline T& Foam::tmp<T>::operator()()
185
186
187
188
189
{
    if (isTmp_)
    {
        if (!ptr_)
        {
190
            FatalErrorIn("T& Foam::tmp<T>::operator()()")
191
192
193
194
195
196
197
198
199
200
201
                << "temporary deallocated"
                << abort(FatalError);
        }

        return *ptr_;
    }
    else
    {
        // Note: const is cast away!
        // Perhaps there should be two refs, one for const and one for non const
        // and if the ref is actually const then you cannot return it here.
202
        //
203
        // Another possibility would be to store a const ref and a flag to say
204
205
206
        // whether the tmp was constructed with a const or a non-const argument.
        //
        // eg, enum refType { POINTER = 0, REF = 1, CONSTREF = 2 };
207
208
209
210
211
212
        return const_cast<T&>(ref_);
    }
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
213
inline const T& Foam::tmp<T>::operator()() const
214
215
216
217
218
{
    if (isTmp_)
    {
        if (!ptr_)
        {
219
            FatalErrorIn("const T& Foam::tmp<T>::operator()() const")
220
221
222
223
224
225
226
227
228
229
230
231
232
233
                << "temporary deallocated"
                << abort(FatalError);
        }

        return *ptr_;
    }
    else
    {
        return ref_;
    }
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
234
inline Foam::tmp<T>::operator const T&() const
235
236
237
238
239
240
{
    return operator()();
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
241
inline T* Foam::tmp<T>::operator->()
242
243
244
245
246
{
    if (isTmp_)
    {
         if (!ptr_)
         {
247
             FatalErrorIn("Foam::tmp<T>::operator->()")
248
249
250
251
252
253
254
255
256
257
258
259
260
261
                 << "temporary deallocated"
                 << abort(FatalError);
         }

         return ptr_;
    }
    else
    {
        return &const_cast<T&>(ref_);
    }
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
262
inline const T* Foam::tmp<T>::operator->() const
263
264
265
266
267
268
{
    return const_cast<tmp<T>&>(*this).operator->();
}


template<class T>
Mark Olesen's avatar
Mark Olesen committed
269
inline void Foam::tmp<T>::operator=(const tmp<T>& t)
270
271
272
273
274
275
{
    if (isTmp_ && ptr_)
    {
        if (ptr_->okToDelete())
        {
            delete ptr_;
Mark Olesen's avatar
Mark Olesen committed
276
            ptr_ = 0;
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
        }
        else
        {
            ptr_->operator--();
        }
    }

    if (t.isTmp_)
    {
        isTmp_ = true;
        ptr_ = t.ptr_;

        if (ptr_)
        {
            ptr_->operator++();
        }
        else
        {
295
            FatalErrorIn("Foam::tmp<T>::operator=(const tmp<T>&)")
296
297
298
299
300
301
                << "attempted copy of a deallocated temporary"
                << abort(FatalError);
        }
    }
    else
    {
302
        FatalErrorIn("Foam::tmp<T>::operator=(const tmp<T>&)")
303
304
305
306
307
308
309
            << "attempted to assign to a const reference to constant object"
            << abort(FatalError);
    }
}


// ************************************************************************* //