/usr/include/octave-3.8.1/octave/action-container.h is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 | /*
Copyright (C) 1993-2013 John W. Eaton
Copyright (C) 2009-2010 VZLU Prague
This file is part of Octave.
Octave 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.
Octave 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
along with Octave; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#if !defined (octave_action_container_h)
#define octave_action_container_h 1
// This class allows registering actions in a list for later
// execution, either explicitly or when the container goes out of
// scope.
// FIXME: is there a better name for this class?
class
action_container
{
public:
// A generic unwind_protect element. Knows how to run itself and
// discard itself. Also, contains a pointer to the next element.
class elem
{
public:
elem (void) { }
virtual void run (void) { }
virtual ~elem (void) { }
friend class action_container;
private:
// No copying!
elem (const elem&);
elem& operator = (const elem&);
};
// An element that merely runs a void (*)(void) function.
class fcn_elem : public elem
{
public:
fcn_elem (void (*fptr) (void))
: e_fptr (fptr) { }
void run (void) { e_fptr (); }
private:
void (*e_fptr) (void);
};
// An element that stores a variable of type T along with a void (*) (T)
// function pointer, and calls the function with the parameter.
template <class T>
class fcn_arg_elem : public elem
{
public:
fcn_arg_elem (void (*fcn) (T), T arg)
: e_fcn (fcn), e_arg (arg) { }
void run (void) { e_fcn (e_arg); }
private:
// No copying!
fcn_arg_elem (const fcn_arg_elem&);
fcn_arg_elem& operator = (const fcn_arg_elem&);
void (*e_fcn) (T);
T e_arg;
};
// An element that stores a variable of type T along with a
// void (*) (const T&) function pointer, and calls the function with
// the parameter.
template <class T>
class fcn_crefarg_elem : public elem
{
public:
fcn_crefarg_elem (void (*fcn) (const T&), const T& arg)
: e_fcn (fcn), e_arg (arg) { }
void run (void) { e_fcn (e_arg); }
private:
void (*e_fcn) (const T&);
T e_arg;
};
// An element for calling a member function.
template <class T>
class method_elem : public elem
{
public:
method_elem (T *obj, void (T::*method) (void))
: e_obj (obj), e_method (method) { }
void run (void) { (e_obj->*e_method) (); }
private:
T *e_obj;
void (T::*e_method) (void);
// No copying!
method_elem (const method_elem&);
method_elem operator = (const method_elem&);
};
// An element for calling a member function with a single argument
template <class T, class A>
class method_arg_elem : public elem
{
public:
method_arg_elem (T *obj, void (T::*method) (A), A arg)
: e_obj (obj), e_method (method), e_arg (arg) { }
void run (void) { (e_obj->*e_method) (e_arg); }
private:
T *e_obj;
void (T::*e_method) (A);
A e_arg;
// No copying!
method_arg_elem (const method_arg_elem&);
method_arg_elem operator = (const method_arg_elem&);
};
// An element for calling a member function with a single argument
template <class T, class A>
class method_crefarg_elem : public elem
{
public:
method_crefarg_elem (T *obj, void (T::*method) (const A&), const A& arg)
: e_obj (obj), e_method (method), e_arg (arg) { }
void run (void) { (e_obj->*e_method) (e_arg); }
private:
T *e_obj;
void (T::*e_method) (const A&);
A e_arg;
// No copying!
method_crefarg_elem (const method_crefarg_elem&);
method_crefarg_elem operator = (const method_crefarg_elem&);
};
// An element that stores arbitrary variable, and restores it.
template <class T>
class restore_var_elem : public elem
{
public:
restore_var_elem (T& ref, const T& val)
: e_ptr (&ref), e_val (val) { }
void run (void) { *e_ptr = e_val; }
private:
// No copying!
restore_var_elem (const restore_var_elem&);
restore_var_elem& operator = (const restore_var_elem&);
T *e_ptr, e_val;
};
// Deletes a class allocated using new.
template <class T>
class delete_ptr_elem : public elem
{
public:
delete_ptr_elem (T *ptr)
: e_ptr (ptr) { }
void run (void) { delete e_ptr; }
private:
T *e_ptr;
// No copying!
delete_ptr_elem (const delete_ptr_elem&);
delete_ptr_elem operator = (const delete_ptr_elem&);
};
action_container (void) { }
virtual ~action_container (void) { }
virtual void add (elem *new_elem) = 0;
// Call to void func (void).
void add_fcn (void (*fcn) (void))
{
add (new fcn_elem (fcn));
}
// Call to void func (T).
template <class T>
void add_fcn (void (*action) (T), T val)
{
add (new fcn_arg_elem<T> (action, val));
}
// Call to void func (const T&).
template <class T>
void add_fcn (void (*action) (const T&), const T& val)
{
add (new fcn_crefarg_elem<T> (action, val));
}
// Call to T::method (void).
template <class T>
void add_method (T *obj, void (T::*method) (void))
{
add (new method_elem<T> (obj, method));
}
// Call to T::method (A).
template <class T, class A>
void add_method (T *obj, void (T::*method) (A), A arg)
{
add (new method_arg_elem<T, A> (obj, method, arg));
}
// Call to T::method (const A&).
template <class T, class A>
void add_method (T *obj, void (T::*method) (const A&), const A& arg)
{
add (new method_crefarg_elem<T, A> (obj, method, arg));
}
// Call to delete (T*).
template <class T>
void add_delete (T *obj)
{
add (new delete_ptr_elem<T> (obj));
}
// Protect any variable.
template <class T>
void protect_var (T& var)
{
add (new restore_var_elem<T> (var, var));
}
// Protect any variable, value given.
template <class T>
void protect_var (T& var, const T& val)
{
add (new restore_var_elem<T> (var, val));
}
operator bool (void) const { return ! empty (); }
virtual void run_first (void) = 0;
void run (size_t num)
{
if (num > size ())
num = size ();
for (size_t i = 0; i < num; i++)
run_first ();
}
void run (void) { run (size ()); }
virtual void discard_first (void) = 0;
void discard (size_t num)
{
if (num > size ())
num = size ();
for (size_t i = 0; i < num; i++)
discard_first ();
}
void discard (void) { discard (size ()); }
virtual size_t size (void) const = 0;
bool empty (void) const { return size () == 0; }
private:
// No copying!
action_container (const action_container&);
action_container& operator = (const action_container&);
};
#endif
|