1 files changed, 119 insertions, 0 deletions
diff --git a/Source/cmVariableWatch.cxx b/Source/cmVariableWatch.cxx
new file mode 100644
index 0000000..cb6cb12
--- /dev/null
+++ b/Source/cmVariableWatch.cxx
@@ -0,0 +1,119 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#include "cmVariableWatch.h"
+
+static const char* const cmVariableWatchAccessStrings[] =
+{
+    "READ_ACCESS",
+    "UNKNOWN_READ_ACCESS",
+    "UNKNOWN_DEFINED_ACCESS",
+    "MODIFIED_ACCESS",
+    "REMOVED_ACCESS",
+    "NO_ACCESS"
+};
+
+const char* cmVariableWatch::GetAccessAsString(int access_type)
+{
+  if ( access_type < 0 || access_type >= cmVariableWatch::NO_ACCESS )
+    {
+    return "NO_ACCESS";
+    }
+  return cmVariableWatchAccessStrings[access_type];
+}
+
+cmVariableWatch::cmVariableWatch()
+{
+}
+
+cmVariableWatch::~cmVariableWatch()
+{
+  cmVariableWatch::StringToVectorOfPairs::iterator svp_it;
+
+  for ( svp_it = this->WatchMap.begin();
+        svp_it != this->WatchMap.end(); ++svp_it )
+    {
+    cmVariableWatch::VectorOfPairs::iterator p_it;
+
+    for ( p_it = svp_it->second.begin();
+          p_it != svp_it->second.end(); ++p_it )
+      {
+      delete *p_it;
+      }
+    }
+}
+
+bool cmVariableWatch::AddWatch(const std::string& variable,
+                               WatchMethod method, void* client_data /*=0*/,
+                               DeleteData delete_data /*=0*/)
+{
+  cmVariableWatch::Pair* p = new cmVariableWatch::Pair;
+  p->Method = method;
+  p->ClientData = client_data;
+  p->DeleteDataCall = delete_data;
+  cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
+  cmVariableWatch::VectorOfPairs::size_type cc;
+  for ( cc = 0; cc < vp->size(); cc ++ )
+    {
+    cmVariableWatch::Pair* pair = (*vp)[cc];
+    if ( pair->Method == method &&
+         client_data && client_data == pair->ClientData)
+      {
+      // Callback already exists
+      return false;
+      }
+    }
+  vp->push_back(p);
+  return true;
+}
+
+void cmVariableWatch::RemoveWatch(const std::string& variable,
+                                  WatchMethod method,
+                                  void* client_data /*=0*/)
+{
+  if ( !this->WatchMap.count(variable) )
+    {
+    return;
+    }
+  cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
+  cmVariableWatch::VectorOfPairs::iterator it;
+  for ( it = vp->begin(); it != vp->end(); ++it )
+    {
+    if ( (*it)->Method == method &&
+         // If client_data is NULL, we want to disconnect all watches against
+         // the given method; otherwise match ClientData as well.
+         (!client_data || (client_data == (*it)->ClientData)))
+      {
+      delete *it;
+      vp->erase(it);
+      return;
+      }
+    }
+}
+
+void  cmVariableWatch::VariableAccessed(const std::string& variable,
+                                        int access_type,
+                                        const char* newValue,
+                                        const cmMakefile* mf) const
+{
+  cmVariableWatch::StringToVectorOfPairs::const_iterator mit =
+    this->WatchMap.find(variable);
+  if ( mit  != this->WatchMap.end() )
+    {
+    const cmVariableWatch::VectorOfPairs* vp = &mit->second;
+    cmVariableWatch::VectorOfPairs::const_iterator it;
+    for ( it = vp->begin(); it != vp->end(); it ++ )
+      {
+      (*it)->Method(variable, access_type, (*it)->ClientData,
+        newValue, mf);
+      }
+    }
+}