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             LogMessage("%s: couldn't find the real interface for the '%s' class",
 169                        interface[i].GetHeader(), cname);
 170             ccount++;
 171         }
 172     }
 173
 174     LogMessage("%d methods (%.1f%%) of the interface headers do not exist in the real headers",
 175                mcount, (float)(100.0 * mcount/m_interface.GetMethodCount()));
 176     LogMessage("%d classes (%.1f%%) of the interface headers do not exist in the real headers",
 177                ccount, (float)(100.0 * ccount/m_interface.GetClassesCount()));
 178
 179     return true;
 180 }
 181
 182 int IfaceCheckApp::CompareClasses(const wxClass* iface, const wxClassPtrArray& api)
 183 {
 184     wxString searchedclasses;
 185     const wxMethod *real;
 186     int count = 0;
 187
 188     wxASSERT(iface && api.GetCount()>0);
 189
 190     // build a string with the names of the API classes compared to iface
 191     for (unsigned int j=0; j<api.GetCount(); j++)
 192         searchedclasses += "/" + api[j]->GetName();
 193     searchedclasses.Remove(0, 1);
 194
 195
 196     // shorten the name of the header so the log file is more readable
 197     wxString header = iface->GetHeader().AfterLast('/');
 198
 199     for (unsigned int i=0; i<iface->GetMethodCount(); i++)
 200     {
 201         const wxMethod& m = iface->GetMethod(i);
 202         const wxString& tofind = m.GetAsString();
 203         int matches = 0;
 204
 205         // search in the methods of the api classes provided
 206         for (unsigned int j=0; j<api.GetCount(); j++)
 207         {
 208             real = api[j]->FindMethod(m);
 209             if (real) {
 210
 211                 // there is a matching prototype! It's ok!
 212                 //LogMessage("the doxygen method '%s' has a match in the real interface of '%s'!",
 213                 //           tofind, api[j]->GetName());
 214                 matches++;
 215             }
 216         }
 217
 218         if (matches == 0)
 219         {
 220             wxMethodPtrArray overloads;
 221
 222             // try searching for a method with the same name but with
 223             // different return type / arguments / qualifiers
 224             for (unsigned int j=0; j<api.GetCount(); j++)
 225             {
 226                 wxMethodPtrArray results = api[j]->FindMethodNamed(m.GetName());
 227
 228                 // append "results" array to "overloads"
 229                 WX_APPEND_ARRAY(overloads, results);
 230             }
 231
 232             if (overloads.GetCount()>1)
 233             {
 234                 // TODO: decide which of these overloads is the most "similar" to m
 235                 //       and eventually modify it
 236                 LogWarning("%s: there are %d overloads of method '%s' in the classes '%s' "
 237                            "all with different signatures; manual fix is required",
 238                            header, overloads.GetCount(), tofind, searchedclasses);
 239             }
 240             else if (overloads.GetCount() == 1)
 241             {
 242                 wxString tmp;
 243                 if (m_modify) tmp = "; fixing it...";
 244
 245                 LogWarning("%s: the method '%s' of classes '%s' has a different signature%s",
 246                            header, tofind, searchedclasses, tmp);
 247
 248                 // try to modify it!
 249                 if (m_modify)
 250                     FixMethod(iface->GetHeader(), &m, overloads[0]);
 251             }
 252             else
 253             {
 254                 LogMessage("%s: real '%s' class has no method '%s'",
 255                            header, searchedclasses, tofind);
 256                 count++;        // count this type of warnings
 257             }
 258         }
 259     }
 260
 261     return count;
 262 }
 263
 264 void IfaceCheckApp::FixMethod(const wxString& header, const wxMethod* iface, const wxMethod* api)
 265 {
 266     wxASSERT(iface && api);
 267
 268     wxTextFile file;
 269     if (!file.Open(header)) {
 270         LogError("can't open the '%s' header file.", header);
 271         return;
 272     }
 273
 274     // GetLocation() returns the line where the last part of the prototype is placed:
 275     int end = iface->GetLocation()-1;
 276     if (end <= 0 || end >= (int)file.GetLineCount()) {
 277         LogWarning("invalid location info for method '%s': %d.",
 278                    iface->GetAsString(), iface->GetLocation());
 279         return;
 280     }
 281
 282     // find the start point of this prototype declaration:
 283     int start = end;
 284     while (start > 0 &&
 285            !file.GetLine(start).Contains(";") &&
 286             !file.GetLine(start).Contains("*/"))
 287         start--;
 288
 289     if (start <= 0)
 290     {
 291         LogError("can't find the beginning of the declaration of '%s' method in '%s' header",
 292                     iface->GetAsString(), header);
 293         return;
 294     }
 295
 296     // remove the old prototype
 297     for (int i=start; i<=end; i++)
 298         file.RemoveLine(start);     // remove (end-start)-nth times the start-th line
 299
 300 #define INDENTATION_STR  wxString("    ")
 301
 302     // if possible, add also the @deprecated tag in the doxygen comment
 303     if (file.GetLine(start-1).Contains("*/") && api->IsDeprecated())
 304     {
 305         file.RemoveLine(start-1);
 306         file.InsertLine(INDENTATION_STR + INDENTATION_STR +
 307                         "@deprecated @todo provide deprecation description", start-1);
 308         file.InsertLine(INDENTATION_STR + "*/", start++);
 309     }
 310
 311     // insert the new one
 312     file.InsertLine(INDENTATION_STR + api->GetAsString() + ";", start);
 313
 314     // now save the modification
 315     if (!file.Write()) {
 316         LogError("can't save the '%s' header file.", header);
 317         return;
 318     }
 319 }
 320
 321 void IfaceCheckApp::PrintStatistics(long secs)
 322 {
 323     LogMessage("wx real headers contains declaration of %d classes (%d methods)",
 324                m_api.GetClassesCount(), m_api.GetMethodCount());
 325     LogMessage("wx interface headers contains declaration of %d classes (%d methods)",
 326                m_interface.GetClassesCount(), m_interface.GetMethodCount());
 327     LogMessage("total processing took %d seconds.", secs);
 328 }
 329