Scippy

SCIP

Solving Constraint Integer Programs

objreader.cpp
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright 2002-2022 Zuse Institute Berlin */
7 /* */
8 /* Licensed under the Apache License, Version 2.0 (the "License"); */
9 /* you may not use this file except in compliance with the License. */
10 /* You may obtain a copy of the License at */
11 /* */
12 /* http://www.apache.org/licenses/LICENSE-2.0 */
13 /* */
14 /* Unless required by applicable law or agreed to in writing, software */
15 /* distributed under the License is distributed on an "AS IS" BASIS, */
16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
17 /* See the License for the specific language governing permissions and */
18 /* limitations under the License. */
19 /* */
20 /* You should have received a copy of the Apache-2.0 license */
21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22 /* */
23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24 
25 /**@file objreader.cpp
26  * @brief C++ wrapper for file readers
27  * @author Tobias Achterberg
28  */
29 
30 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
31 
32 #include <cassert>
33 
34 #include "objreader.h"
35 
36 
37 
38 
39 /*
40  * Data structures
41  */
42 
43 /** file reader data */
44 struct SCIP_ReaderData
45 {
46  scip::ObjReader* objreader; /**< file reader object */
47  SCIP_Bool deleteobject; /**< should the reader object be deleted when reader is freed? */
48 };
49 
50 
51 
52 
53 /*
54  * Callback methods of file reader
55  */
56 
57 extern "C"
58 {
59 
60 /** copy method for reader plugins (called when SCIP copies plugins) */
61 static
62 SCIP_DECL_READERCOPY(readerCopyObj)
63 { /*lint --e{715}*/
64  SCIP_READERDATA* readerdata;
65 
66  assert(scip != NULL);
67 
68  readerdata = SCIPreaderGetData(reader);
69  assert(readerdata != NULL);
70  assert(readerdata->objreader != NULL);
71  assert(readerdata->objreader->scip_ != scip);
72 
73  if( readerdata->objreader->iscloneable() )
74  {
75  scip::ObjReader* newobjreader;
76  newobjreader = dynamic_cast<scip::ObjReader*> (readerdata->objreader->clone(scip));
77 
78  /* call include method of reader object */
79  SCIP_CALL( SCIPincludeObjReader(scip, newobjreader, TRUE) );
80  }
81 
82  return SCIP_OKAY;
83 }
84 
85 /** destructor of file reader to free user data (called when SCIP is exiting) */
86 static
87 SCIP_DECL_READERFREE(readerFreeObj)
88 { /*lint --e{715}*/
89  SCIP_READERDATA* readerdata;
90 
91  readerdata = SCIPreaderGetData(reader);
92  assert(readerdata != NULL);
93  assert(readerdata->objreader != NULL);
94  assert(readerdata->objreader->scip_ == scip);
95 
96  /* call virtual method of reader object */
97  SCIP_CALL( readerdata->objreader->scip_free(scip, reader) );
98 
99  /* free reader object */
100  if( readerdata->deleteobject )
101  delete readerdata->objreader;
102 
103  /* free reader data */
104  delete readerdata;
105  SCIPreaderSetData(reader, NULL); /*lint !e64*/
106 
107  return SCIP_OKAY;
108 }
109 
110 
111 /** problem reading method of reader */
112 static
113 SCIP_DECL_READERREAD(readerReadObj)
114 { /*lint --e{715}*/
115  SCIP_READERDATA* readerdata;
116 
117  readerdata = SCIPreaderGetData(reader);
118  assert(readerdata != NULL);
119  assert(readerdata->objreader != NULL);
120  assert(readerdata->objreader->scip_ == scip);
121 
122  /* call virtual method of reader object */
123  SCIP_CALL( readerdata->objreader->scip_read(scip, reader, filename, result) );
124 
125  return SCIP_OKAY;
126 }
127 
128 
129 /** problem writing method of reader */
130 static
131 SCIP_DECL_READERWRITE(readerWriteObj)
132 { /*lint --e{715}*/
133  SCIP_READERDATA* readerdata;
134 
135  readerdata = SCIPreaderGetData(reader);
136  assert(readerdata != NULL);
137  assert(readerdata->objreader != NULL);
138 
139  /* call virtual method of reader object */
140  SCIP_CALL( readerdata->objreader->scip_write(scip, reader, file, name, probdata, transformed,
141  objsense, objscale, objoffset,
142  vars, nvars, nbinvars, nintvars, nimplvars, ncontvars, fixedvars, nfixedvars, startnvars,
143  conss, nconss, maxnconss, startnconss, genericnames, result) );
144 
145  return SCIP_OKAY;
146 }
147 }
148 
149 
150 /*
151  * file reader specific interface methods
152  */
153 
154 /** creates the file reader for the given file reader object and includes it in SCIP */
156  SCIP* scip, /**< SCIP data structure */
157  scip::ObjReader* objreader, /**< file reader object */
158  SCIP_Bool deleteobject /**< should the reader object be deleted when reader is freed? */
159  )
160 {
161  SCIP_READERDATA* readerdata;
162 
163  assert(scip != NULL);
164  assert(objreader != NULL);
165 
166  /* create file reader data */
167  readerdata = new SCIP_READERDATA;
168  readerdata->objreader = objreader;
169  readerdata->deleteobject = deleteobject;
170 
171  /* include file reader */
172  SCIP_CALL( SCIPincludeReader(scip, objreader->scip_name_, objreader->scip_desc_, objreader->scip_extension_,
173  readerCopyObj,
174  readerFreeObj, readerReadObj, readerWriteObj, readerdata) ); /*lint !e429*/
175 
176  return SCIP_OKAY; /*lint !e429*/
177 }
178 
179 /** returns the reader object of the given name, or 0 if not existing */
181  SCIP* scip, /**< SCIP data structure */
182  const char* name /**< name of file reader */
183  )
184 {
185  SCIP_READER* reader;
186  SCIP_READERDATA* readerdata;
187 
188  reader = SCIPfindReader(scip, name);
189  if( reader == NULL )
190  return 0;
191 
192  readerdata = SCIPreaderGetData(reader);
193  assert(readerdata != NULL);
194 
195  return readerdata->objreader;
196 }
197 
198 /** returns the reader object for the given file reader */
200  SCIP* scip, /**< SCIP data structure */
201  SCIP_READER* reader /**< file reader */
202  )
203 {
204  SCIP_READERDATA* readerdata;
205 
206  assert(scip != NULL);
207  readerdata = SCIPreaderGetData(reader);
208  assert(readerdata != NULL);
209 
210  return readerdata->objreader;
211 }
char * scip_desc_
Definition: objreader.h:64
#define TRUE
Definition: def.h:95
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
scip::ObjReader * SCIPfindObjReader(SCIP *scip, const char *name)
Definition: objreader.cpp:180
SCIP_READER * SCIPfindReader(SCIP *scip, const char *name)
Definition: scip_reader.c:235
static SCIP_DECL_READERFREE(readerFreeObj)
Definition: objreader.cpp:87
char * scip_name_
Definition: objreader.h:61
void SCIPreaderSetData(SCIP_READER *reader, SCIP_READERDATA *readerdata)
Definition: reader.c:502
SCIP_READERDATA * SCIPreaderGetData(SCIP_READER *reader)
Definition: reader.c:492
static SCIP_DECL_READERREAD(readerReadObj)
Definition: objreader.cpp:113
#define NULL
Definition: lpi_spx1.cpp:164
#define SCIP_CALL(x)
Definition: def.h:393
scip::ObjReader * SCIPgetObjReader(SCIP *scip, SCIP_READER *reader)
Definition: objreader.cpp:199
struct SCIP_ReaderData SCIP_READERDATA
Definition: type_reader.h:53
#define SCIP_Bool
Definition: def.h:93
static SCIP_DECL_READERWRITE(readerWriteObj)
Definition: objreader.cpp:131
SCIP_RETCODE SCIPincludeReader(SCIP *scip, const char *name, const char *desc, const char *extension, SCIP_DECL_READERCOPY((*readercopy)), SCIP_DECL_READERFREE((*readerfree)), SCIP_DECL_READERREAD((*readerread)), SCIP_DECL_READERWRITE((*readerwrite)), SCIP_READERDATA *readerdata)
Definition: scip_reader.c:66
SCIP_RETCODE SCIPincludeObjReader(SCIP *scip, scip::ObjReader *objreader, SCIP_Bool deleteobject)
Definition: objreader.cpp:155
char * scip_extension_
Definition: objreader.h:67
static SCIP_DECL_READERCOPY(readerCopyObj)
Definition: objreader.cpp:62
C++ wrapper for file readers and writers.
Definition: objreader.h:52
C++ wrapper for file readers and writers.