summaryrefslogtreecommitdiffstats
path: root/Source/cmVTKMakeInstantiatorCommand.cxx
blob: 1f9edc5884d3fc829f031114e8cd70b09b67ae9d (plain)
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
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Insight Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#include "cmVTKMakeInstantiatorCommand.h"
#include "cmCacheManager.h"
#include "cmGeneratedFileStream.h"

bool
cmVTKMakeInstantiatorCommand
::InitialPass(std::vector<std::string> const& args)
{
  if(args.size() < 3)
    {
    this->SetError("called with incorrect number of arguments");
    return false;
    }
  
  m_ClassName = args[0];
  m_Makefile->ExpandVariablesInString(m_ClassName);
  
  std::string outSourceList = args[1];
  m_Makefile->ExpandVariablesInString(outSourceList);
  
  std::vector<cmStdString> inSourceLists;
  m_ExportMacro = "-";
  unsigned int groupSize = 10;
  bool includesMode = false;
  
  // Find the path of the files to be generated.
  std::string filePath = m_Makefile->GetCurrentOutputDirectory();
  std::string headerPath = filePath;
  
  for(unsigned int i=2;i < args.size();++i)
    {
    if(args[i] == "GROUP_SIZE")
      {
      includesMode = false;
      if(++i < args.size())
        {
        std::string gSize = args[i].c_str();
        m_Makefile->ExpandVariablesInString(gSize);
        groupSize = atoi(gSize.c_str());
        }
      else
        {
        this->SetError("GROUP_SIZE option used without value.");
        return false;
        }
      }
    else if(args[i] == "HEADER_LOCATION")
      {
      includesMode = false;
      if(++i < args.size())
        {
        headerPath = args[i];
        m_Makefile->ExpandVariablesInString(headerPath);
        }
      else
        {
        this->SetError("HEADER_LOCATION option used without value.");
        return false;
        }
      }
    else if(args[i] == "EXPORT_MACRO")
      {
      includesMode = false;
      if(++i < args.size())
        {
        m_ExportMacro = args[i];
        m_Makefile->ExpandVariablesInString(m_ExportMacro);
        }
      else
        {
        this->SetError("EXPORT_MACRO option used without value.");
        return false;
        }
      }
    else if(args[i] == "INCLUDES")
      {
      includesMode = true;
      }
    // If not an option, it must be another input source list name or
    // an include file.
    else
      {
      std::string s = args[i];
      m_Makefile->ExpandVariablesInString(s);
      if(!includesMode)
        {
        inSourceLists.push_back(s);
        }
      else
        {
        m_Includes.push_back(s);
        }
      }
    }
  
  if(m_ExportMacro == "-")
    {
    this->SetError("No EXPORT_MACRO option given.");
    return false;
    }
  
  for(std::vector<cmStdString>::const_iterator s = inSourceLists.begin();
      s != inSourceLists.end(); ++s)
    {
    // Find the source list specified.
    cmMakefile::SourceMap::iterator srcListIter =
      m_Makefile->GetSources().find(*s);
    
    if(srcListIter == m_Makefile->GetSources().end())
      {
      std::string errStr = "No source list named " + *s;
      this->SetError(errStr.c_str());
      return false;
      }
    
    std::vector<cmSourceFile>& srcList = srcListIter->second;
    
    // Collect the names of the classes.
    for(std::vector<cmSourceFile>::iterator src = srcList.begin();
        src != srcList.end();++src)
      {
      // Wrap-excluded and abstract classes do not have a New() method.
      // vtkIndent and vtkTimeStamp are special cases and are not
      // vtkObject subclasses.
      if(!src->GetWrapExclude() && !src->GetIsAnAbstractClass()
         && (src->GetSourceName() != "vtkIndent")
         && (src->GetSourceName() != "vtkTimeStamp"))
        {
        m_Classes.push_back(src->GetSourceName());
        }
      }
    }    
  
  // Generate the header with the class declaration.
  {
  std::string fileName = m_ClassName + ".h";
  std::string fullName = headerPath+"/"+fileName;
  
  // Generate the output file with copy-if-different.
  cmGeneratedFileStream fout(fullName.c_str());
  
  // Actually generate the code in the file.
  this->GenerateHeaderFile(fout.GetStream());
  }
  
  // Generate the implementation file.
  {
  std::string fileName = m_ClassName + ".cxx";
  std::string fullName = filePath+"/"+fileName;
  
  // Generate the output file with copy-if-different.
  {
  cmGeneratedFileStream fout(fullName.c_str());
  
  // Actually generate the code in the file.
  this->GenerateImplementationFile(fout.GetStream());
  }
  
  // Add the generated source file into the source list.
  cmSourceFile file;
  file.SetWrapExclude(true);
  file.SetIsAnAbstractClass(false);
  file.SetName(fileName.c_str(), filePath.c_str(),
               m_Makefile->GetSourceExtensions(),
               m_Makefile->GetHeaderExtensions());
  m_Makefile->AddSource(file, outSourceList.c_str());
  }

  unsigned int numClasses = m_Classes.size();
  unsigned int numFullBlocks = numClasses / groupSize;
  unsigned int lastBlockSize = numClasses % groupSize;
  unsigned int numBlocks = numFullBlocks + ((lastBlockSize>0)? 1:0);

  // Generate the files with the ::New() calls to each class.  These
  // are done in groups to keep the translation unit size smaller.
  for(unsigned int block=0; block < numBlocks;++block)
    {
    std::string fileName = this->GenerateCreationFileName(block);    
    std::string fullName = filePath+"/"+fileName;
    
    // Generate the output file with copy-if-different.
    {
    cmGeneratedFileStream fout(fullName.c_str());
    
    unsigned int thisBlockSize =
      (block < numFullBlocks)? groupSize:lastBlockSize;
    
    // Actually generate the code in the file.
    this->GenerateCreationFile(fout.GetStream(),
                               block*groupSize, thisBlockSize);
    }
    
    // Add the generated source file into the source list.
    cmSourceFile file;
    file.SetWrapExclude(true);
    file.SetIsAnAbstractClass(false);
    file.SetName(fileName.c_str(), filePath.c_str(),
                 m_Makefile->GetSourceExtensions(),
                 m_Makefile->GetHeaderExtensions());
    m_Makefile->AddSource(file, outSourceList.c_str());
    }

  return true;
}

std::string
cmVTKMakeInstantiatorCommand::GenerateCreationFileName(unsigned int block)
{
  std::strstream nameStr;
  nameStr << m_ClassName.c_str() << block << ".cxx" << std::ends;
  std::string result = nameStr.str();
  nameStr.rdbuf()->freeze(0);
  return result;
}

// Generates the class header file with the definition of the class
// and its initializer class.
void
cmVTKMakeInstantiatorCommand
::GenerateHeaderFile(std::ostream& os)
{
  os <<
    "#ifndef __" << m_ClassName.c_str() << "_h\n"
    "#define __" << m_ClassName.c_str() << "_h\n"
    "\n"
    "#include \"vtkInstantiator.h\"\n";
  for(unsigned int i=0;i < m_Includes.size();++i)
    {
    os << "#include \"" << m_Includes[i].c_str() << "\"\n";
    }
  os <<
    "\n"
    "class " << m_ClassName.c_str() << "Initialize;\n"
    "\n"
    "class " << m_ExportMacro.c_str() << " " << m_ClassName.c_str() << "\n"
    "{\n"
    "  friend class " << m_ClassName.c_str() << "Initialize;\n"
    "\n"
    "  static void ClassInitialize();\n"
    "  static void ClassFinalize();\n"
    "\n";
  
  for(unsigned int i=0;i < m_Classes.size();++i)
    {
    os << "  static vtkObject* Create_" << m_Classes[i].c_str() << "();\n";
    }
  
  // Write the initializer class to make sure the creation functions
  // get registered when this generated header is included.
  os <<
    "};\n"
    "\n"
    "class " << m_ExportMacro.c_str() << " " << m_ClassName.c_str() << "Initialize\n"
    "{\n"
    "public:\n"
    "  " << m_ClassName.c_str() << "Initialize();\n"
    "  ~" << m_ClassName.c_str() << "Initialize();\n"
    "private:\n"
    "  static unsigned int Count;\n"
    "};\n"
    "\n"
    "static " << m_ClassName.c_str() << "Initialize " << m_ClassName.c_str() << "Initializer;\n"
    "\n"
    "#endif\n";  
}

// Generates the file with the implementation of the class.  All
// methods except the actual object creation functions are generated
// here.
void
cmVTKMakeInstantiatorCommand
::GenerateImplementationFile(std::ostream& os)
{
  // Write the ClassInitialize method to register all the creation functions.
  os <<
    "#include \"" << m_ClassName.c_str() << ".h\"\n"
    "\n"
    "void " << m_ClassName.c_str() << "::ClassInitialize()\n"
    "{\n";
    
  for(unsigned int i=0;i < m_Classes.size();++i)
    {
    os << "  vtkInstantiator::RegisterInstantiator(\""
       << m_Classes[i].c_str() << "\", " << m_ClassName.c_str() << "::Create_"
       << m_Classes[i].c_str() << ");\n";
    }
  
  // Write the ClassFinalize method to unregister all the creation functions.
  os <<
    "}\n"
    "\n"
    "void " << m_ClassName.c_str() << "::ClassFinalize()\n"
    "{\n";
  
  for(unsigned int i=0;i < m_Classes.size();++i)
    {
    os << "  vtkInstantiator::UnRegisterInstantiator(\""
       << m_Classes[i].c_str() << "\", " << m_ClassName.c_str() << "::Create_"
       << m_Classes[i].c_str() << ");\n";
    }
  
  // Write the constructor and destructor of the initializer class to
  // call the ClassInitialize and ClassFinalize methods at the right
  // time.
  os <<
    "}\n"
    "\n" <<
    m_ClassName.c_str() << "Initialize::" << m_ClassName.c_str() << "Initialize()\n"
    "{\n"
    "  if(++" << m_ClassName.c_str() << "Initialize::Count == 1)\n"
    "    { " << m_ClassName.c_str() << "::ClassInitialize(); }\n"
    "}\n"
    "\n" <<
    m_ClassName.c_str() << "Initialize::~" << m_ClassName.c_str() << "Initialize()\n"
    "{\n"
    "  if(--" << m_ClassName.c_str() << "Initialize::Count == 0)\n"
    "    { " << m_ClassName.c_str() << "::ClassFinalize(); }\n"
    "}\n"
    "\n"
    "// Number of translation units that include this class's header.\n"
    "// Purposely not initialized.  Default is static initialization to 0.\n"
    "unsigned int " << m_ClassName.c_str() << "Initialize::Count;\n";
}

// Generates a file that includes the headers of the classes it knows
// how to create and provides functions which create the classes with
// the New() method.
void
cmVTKMakeInstantiatorCommand
::GenerateCreationFile(std::ostream& os, unsigned int groupStart,
                       unsigned int groupSize)
{
  // Need to include header of generated class.
  os <<
    "#include \"" << m_ClassName.c_str() << ".h\"\n"
    "\n";
  
  // Include class files.
  for(unsigned int i=0;i < groupSize;++i)
    {
    os << "#include \"" << m_Classes[groupStart+i].c_str() << ".h\"\n";
    }

  os <<
    "\n";

  // Write the create function implementations.
  for(unsigned int i=0;i < groupSize;++i)
    {
    os << "vtkObject* " << m_ClassName.c_str() << "::Create_"
       << m_Classes[groupStart+i].c_str() << "() { return "
       << m_Classes[groupStart+i].c_str() << "::New(); }\n";
    }
}