utils/ifacecheck/src/ifacecheck.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        ifacecheck.cpp
   3 // Purpose:     Interface headers <=> real headers coherence checker
   4 // Author:      Francesco Montorsi
   5 // Created:     2008/03/17
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Francesco Montorsi
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx/wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 // for all others, include the necessary headers
  19 #ifndef WX_PRECOMP
  20     #include "wx/app.h"
  21 #endif
  22
  23 #include "wx/cmdline.h"
  24 #include "wx/textfile.h"
  25 #include "wx/stopwatch.h"       // for wxGetLocalTime
  26 #include "xmlparser.h"
  27
  28 // global verbosity flag
  29 bool g_verbose = false;
  30
  31
  32
  33 // ----------------------------------------------------------------------------
  34 // IfaceCheckApp
  35 // ----------------------------------------------------------------------------
  36
  37 #define API_DUMP_FILE           "dump.api.txt"
  38 #define INTERFACE_DUMP_FILE     "dump.interface.txt"
  39
  40 #define MODIFY_SWITCH           "m"
  41 #define DUMP_SWITCH             "dump"
  42 #define HELP_SWITCH             "h"
  43 #define VERBOSE_SWITCH          "v"
  44
  45 static const wxCmdLineEntryDesc g_cmdLineDesc[] =
  46 {
  47     { wxCMD_LINE_SWITCH, MODIFY_SWITCH, "modify",
  48         "modify the interface headers to match the real ones" },
  49     { wxCMD_LINE_SWITCH, "", DUMP_SWITCH,
  50         "dump both interface and API to plain text" },
  51     { wxCMD_LINE_SWITCH, HELP_SWITCH, "help",
  52         "show help message", wxCMD_LINE_VAL_NONE, wxCMD_LINE_OPTION_HELP },
  53     { wxCMD_LINE_SWITCH, VERBOSE_SWITCH, "verbose",
  54         "be verbose" },
  55     { wxCMD_LINE_PARAM,  NULL, NULL,
  56         "gccXML", wxCMD_LINE_VAL_STRING, wxCMD_LINE_OPTION_MANDATORY },
  57     { wxCMD_LINE_PARAM,  NULL, NULL,
  58         "doxygenXML", wxCMD_LINE_VAL_STRING, wxCMD_LINE_OPTION_MANDATORY },
  59     wxCMD_LINE_DESC_END
  60 };
  61
  62 class IfaceCheckApp : public wxAppConsole
  63 {
  64 public:
  65     // don't use builtin cmd line parsing:
  66     virtual bool OnInit() { m_modify=false; return true; }
  67     virtual int OnRun();
  68
  69     bool Compare();
  70     int CompareClasses(const wxClass* iface, const wxClassPtrArray& api);
  71     void FixMethod(const wxString& header, const wxMethod* iface, const wxMethod* api);
  72
  73     void ShowProgress();
  74     void PrintStatistics(long secs);
  75
  76 protected:
  77     wxXmlGccInterface m_api;                  // "real" headers API
  78     wxXmlDoxygenInterface m_interface;        // doxygen-commented headers API
  79
  80     // was the MODIFY_SWITCH passed?
  81     bool m_modify;
  82 };
  83
  84 IMPLEMENT_APP_CONSOLE(IfaceCheckApp)
  85
  86 int IfaceCheckApp::OnRun()
  87 {
  88     long startTime = wxGetLocalTime();      // for timing purpose
  89
  90     // parse the command line...
  91     wxCmdLineParser parser(g_cmdLineDesc, argc, argv);
  92     bool ok = true;
  93     switch (parser.Parse())
  94     {
  95         case -1:
  96             // HELP_SWITCH was passed
  97             return 0;
  98
  99         case 0:
 100             if (parser.Found(VERBOSE_SWITCH))
 101                 g_verbose = true;
 102
 103             if (!m_api.Parse(parser.GetParam(0)) ||
 104                 !m_interface.Parse(parser.GetParam(1)))
 105                 return 1;
 106
 107             if (parser.Found(DUMP_SWITCH))
 108             {
 109                 LogMessage("Dumping real API to '%s'...", API_DUMP_FILE);
 110                 m_api.Dump(API_DUMP_FILE);
 111
 112                 LogMessage("Dumping interface API to '%s'...", INTERFACE_DUMP_FILE);
 113                 m_interface.Dump(INTERFACE_DUMP_FILE);
 114             }
 115             else
 116             {
 117                 if (parser.Found(MODIFY_SWITCH))
 118                     m_modify = true;
 119
 120                 ok = Compare();
 121             }
 122
 123             PrintStatistics(wxGetLocalTime() - startTime);
 124             return ok ? 0 : 1;
 125     }
 126
 127     return 1;
 128 }
 129
 130 void IfaceCheckApp::ShowProgress()
 131 {
 132     wxPrint(".");
 133     //fflush(stdout);
 134 }
 135
 136 bool IfaceCheckApp::Compare()
 137 {
 138     const wxClassArray& interface = m_interface.GetClasses();
 139     const wxClass* c;
 140     wxClassPtrArray api;
 141     int mcount = 0, ccount = 0;
 142
 143     LogMessage("Comparing the interface API to the real API (%d classes to compare)...",
 144                interface.GetCount());
 145
 146     for (unsigned int i=0; i<interface.GetCount(); i++)
 147     {
 148         wxString cname = interface[i].GetName();
 149
 150         api.Empty();
 151
 152         // search in the real headers for i-th interface class
 153         // for both class cname and cnameBase as in wxWidgets world, most often
 154         // class cname is platform-specific while the real public interface of
 155         // that class is part of the cnameBase class.
 156         c = m_api.FindClass(cname);
 157         if (c) api.Add(c);
 158         c = m_api.FindClass(cname + "Base");
 159         if (c) api.Add(c);
 160
 161         if (api.GetCount()>0) {
 162
 163             // there is a class with exactly the same name!
 164             mcount += CompareClasses(&interface[i], api);
 165
 166         } else {
 167
 168             // shorten the name of the header so the log file is more readable
 169             wxString header = interface[i].GetHeader().AfterLast('/');
 170
 171             LogMessage("%s: couldn't find the real interface for the '%s' class",
 172                        header, cname);
 173             ccount++;
 174         }
 175     }
 176
 177     LogMessage("%d methods (%.1f%%) of the interface headers do not exist in the real headers",
 178                mcount, (float)(100.0 * mcount/m_interface.GetMethodCount()));
 179     LogMessage("%d classes (%.1f%%) of the interface headers do not exist in the real headers",
 180                ccount, (float)(100.0 * ccount/m_interface.GetClassesCount()));
 181
 182     return true;
 183 }
 184
 185 int IfaceCheckApp::CompareClasses(const wxClass* iface, const wxClassPtrArray& api)
 186 {
 187     wxString searchedclasses;
 188     const wxMethod *real;
 189     int count = 0;
 190
 191     wxASSERT(iface && api.GetCount()>0);
 192
 193     // build a string with the names of the API classes compared to iface
 194     for (unsigned int j=0; j<api.GetCount(); j++)
 195         searchedclasses += "/" + api[j]->GetName();
 196     searchedclasses.Remove(0, 1);
 197
 198     // shorten the name of the header so the log file is more readable
 199     wxString header = iface->GetHeader().AfterLast('/');
 200
 201     for (unsigned int i=0; i<iface->GetMethodCount(); i++)
 202     {
 203         const wxMethod& m = iface->GetMethod(i);
 204         int matches = 0;
 205
 206         // search in the methods of the api classes provided
 207         for (unsigned int j=0; j<api.GetCount(); j++)
 208         {
 209             real = api[j]->FindMethod(m);
 210             if (real)
 211                 matches++;                // there is a real matching prototype! It's ok!
 212         }
 213
 214         if (matches == 0)
 215         {
 216             wxMethodPtrArray overloads;
 217
 218             // try searching for a method with the same name but with
 219             // different return type / arguments / qualifiers
 220             for (unsigned int j=0; j<api.GetCount(); j++)
 221             {
 222                 wxMethodPtrArray results = api[j]->FindMethodNamed(m.GetName());
 223
 224                 // append "results" array to "overloads"
 225                 WX_APPEND_ARRAY(overloads, results);
 226             }
 227
 228             if (overloads.GetCount()==0)
 229             {
 230                 LogMessage("%s: real '%s' class has no method '%s'",
 231                             header, searchedclasses, m.GetAsString());
 232                 // we've found no overloads
 233             }
 234             else
 235             {
 236                 // first, output a warning
 237                 wxString warning = header;
 238                 if (overloads.GetCount()>1)
 239                     warning += wxString::Format(": in the real headers there are %d overloads of '%s' for "
 240                                                 "'%s' all with different signatures:\n",
 241                                                 overloads.GetCount(), m.GetName(), searchedclasses);
 242                 else
 243                     warning += wxString::Format(": in the real headers there is a method '%s' for '%s'"
 244                                                 " but has different signature:\n",
 245                                                 m.GetName(), searchedclasses);
 246
 247                 warning += "\tdoxy header: " + m.GetAsString();
 248                 for (unsigned int j=0; j<overloads.GetCount(); j++)
 249                     warning += "\n\treal header: " + overloads[j]->GetAsString();
 250
 251                 wxPrint(warning + "\n");
 252                 count++;
 253
 254                 if (overloads.GetCount()>1)
 255                 {
 256                     // TODO: decide which of these overloads is the most "similar" to m
 257                     //       and eventually modify it
 258                     if (m_modify)
 259                         wxPrint("\tmanual fix is required\n");
 260                 }
 261                 else
 262                 {
 263                     wxASSERT(overloads.GetCount() == 1);
 264
 265                     if (m_modify)
 266                     {
 267                         wxPrint("\tfixing it...\n");
 268
 269                         // try to modify it!
 270                         FixMethod(iface->GetHeader(), &m, overloads[0]);
 271                     }
 272                 }
 273             }
 274
 275             count++;
 276         }
 277     }
 278
 279     return count;
 280 }
 281
 282 void IfaceCheckApp::FixMethod(const wxString& header, const wxMethod* iface, const wxMethod* api)
 283 {
 284     wxASSERT(iface && api);
 285
 286     wxTextFile file;
 287     if (!file.Open(header)) {
 288         LogError("can't open the '%s' header file.", header);
 289         return;
 290     }
 291
 292     // GetLocation() returns the line where the last part of the prototype is placed:
 293     int end = iface->GetLocation()-1;
 294     if (end <= 0 || end >= (int)file.GetLineCount()) {
 295         LogWarning("invalid location info for method '%s': %d.",
 296                    iface->GetAsString(), iface->GetLocation());
 297         return;
 298     }
 299
 300     if (!file.GetLine(end).Contains(iface->GetName())) {
 301         LogWarning("invalid location info for method '%s': %d.",
 302                    iface->GetAsString(), iface->GetLocation());
 303         return;
 304     }
 305
 306     // find the start point of this prototype declaration:
 307     int start = end-1;
 308     while (start > 0 &&
 309            !file.GetLine(start).Contains(";") &&
 310            !file.GetLine(start).Contains("*/"))
 311         start--;
 312
 313     if (start <= 0)
 314     {
 315         LogError("can't find the beginning of the declaration of '%s' method in '%s' header",
 316                     iface->GetAsString(), header);
 317         return;
 318     }
 319
 320     // start-th line contains either the declaration of another prototype
 321     // or the closing tag */ of a doxygen comment; start one line below
 322     start++;
 323
 324     // remove the old prototype
 325     for (int i=start; i<=end; i++)
 326         file.RemoveLine(start);     // remove (end-start)-nth times the start-th line
 327
 328 #define INDENTATION_STR  wxString("    ")
 329
 330     // if possible, add also the @deprecated tag in the doxygen comment
 331     if (file.GetLine(start-1).Contains("*/") && api->IsDeprecated())
 332     {
 333         file.RemoveLine(start-1);
 334         file.InsertLine(INDENTATION_STR + INDENTATION_STR +
 335                         "@deprecated @todo provide deprecation description", start-1);
 336         file.InsertLine(INDENTATION_STR + "*/", start++);
 337     }
 338
 339     // insert the new one
 340     file.InsertLine(INDENTATION_STR + api->GetAsString() + ";", start);
 341
 342     // now save the modification
 343     if (!file.Write()) {
 344         LogError("can't save the '%s' header file.", header);
 345         return;
 346     }
 347 }
 348
 349 void IfaceCheckApp::PrintStatistics(long secs)
 350 {
 351     LogMessage("wx real headers contains declaration of %d classes (%d methods)",
 352                m_api.GetClassesCount(), m_api.GetMethodCount());
 353     LogMessage("wx interface headers contains declaration of %d classes (%d methods)",
 354                m_interface.GetClassesCount(), m_interface.GetMethodCount());
 355     LogMessage("total processing took %d seconds.", secs);
 356 }
 357