Speedup find_* commands (#11412)

Delay computation of the command documentation until it is needed.
It is wasteful to do it in the constructor on every call.

Inspired-By: Christian Ehrlicher <Ch.Ehrlicher@gmx.de>

14 files changed, 88 insertions, 42 deletions

diff --git a/Source/cmFindBase.cxx b/Source/cmFindBase.cxx
index e1188d5bb5..041653896d 100644
--- a/Source/cmFindBase.cxx
+++ b/Source/cmFindBase.cxx
@@ -13,11 +13,17 @@
   
 cmFindBase::cmFindBase()
 {
-  cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
-                               "FIND_ARGS_XXX", "<VAR> NAMES name");
   this->AlreadyInCache = false;
   this->AlreadyInCacheWithoutMetaInfo = false;
-  this->GenericDocumentation = 
+}
+
+//----------------------------------------------------------------------------
+void cmFindBase::GenerateDocumentation()
+{
+  this->cmFindCommon::GenerateDocumentation();
+  cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
+                               "FIND_ARGS_XXX", "<VAR> NAMES name");
+  this->GenericDocumentation =
     "   FIND_XXX(<VAR> name1 [path1 path2 ...])\n"
     "This is the short-hand signature for the command that "
     "is sufficient in many cases.  It is the same "
@@ -97,7 +103,18 @@ cmFindBase::cmFindBase()
   this->GenericDocumentation += this->GenericDocumentationRootPath;
   this->GenericDocumentation += this->GenericDocumentationPathsOrder;
 }
-  
+
+//----------------------------------------------------------------------------
+const char* cmFindBase::GetFullDocumentation()
+{
+  if(this->GenericDocumentation.empty())
+    {
+    this->GenerateDocumentation();
+    }
+  return this->GenericDocumentation.c_str();
+}
+
+//----------------------------------------------------------------------------
 bool cmFindBase::ParseArguments(std::vector<std::string> const& argsIn)
 {
   if(argsIn.size() < 2 )
diff --git a/Source/cmFindBase.h b/Source/cmFindBase.h
index 2f1727e9ff..de319b1d10 100644
--- a/Source/cmFindBase.h
+++ b/Source/cmFindBase.h
@@ -31,10 +31,10 @@ public:
   virtual bool ParseArguments(std::vector<std::string> const& args);
   cmTypeMacro(cmFindBase, cmFindCommon);
   
-  virtual const char* GetFullDocumentation()
-    {return this->GenericDocumentation.c_str();}
+  virtual const char* GetFullDocumentation();
 
 protected:
+  virtual void GenerateDocumentation();
   void PrintFindStuff();
   void ExpandPaths();
   void AddPathSuffixes();
diff --git a/Source/cmFindCommon.cxx b/Source/cmFindCommon.cxx
index b7d3e52f94..a05e337984 100644
--- a/Source/cmFindCommon.cxx
+++ b/Source/cmFindCommon.cxx
@@ -34,7 +34,11 @@ cmFindCommon::cmFindCommon()
   this->SearchFrameworkLast = false;
   this->SearchAppBundleOnly = false;
   this->SearchAppBundleLast = false;
+}
 
+//----------------------------------------------------------------------------
+void cmFindCommon::GenerateDocumentation()
+{
   // Documentation components.
   this->GenericDocumentationMacPolicy =
     "On Darwin or systems supporting OS X Frameworks, the cmake variable"
diff --git a/Source/cmFindCommon.h b/Source/cmFindCommon.h
index a4866ba6f9..875c223548 100644
--- a/Source/cmFindCommon.h
+++ b/Source/cmFindCommon.h
@@ -56,6 +56,8 @@ protected:
   /** Compute the current default bundle/framework search policy.  */
   void SelectDefaultMacMode();
 
+  virtual void GenerateDocumentation();
+
   cmStdString CMakePathName;
   RootPathMode FindRootPathMode;
 
diff --git a/Source/cmFindFileCommand.cxx b/Source/cmFindFileCommand.cxx
index 897b4bb66c..fa66fa11df 100644
--- a/Source/cmFindFileCommand.cxx
+++ b/Source/cmFindFileCommand.cxx
@@ -15,11 +15,16 @@
 cmFindFileCommand::cmFindFileCommand()
 {
   this->IncludeFileInPath = true;
+}
+
+void cmFindFileCommand::GenerateDocumentation()
+{
+  this->cmFindPathCommand::GenerateDocumentation();
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "find_path", "find_file");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "directory containing the named file", 
+                               "directory containing the named file",
                                "full path to named file");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                                "file in a directory", "full path to a file");
+                               "file in a directory", "full path to a file");
 }
diff --git a/Source/cmFindFileCommand.h b/Source/cmFindFileCommand.h
index aa0d25e5f1..dd2e01d9de 100644
--- a/Source/cmFindFileCommand.h
+++ b/Source/cmFindFileCommand.h
@@ -44,6 +44,8 @@ public:
     }
   
   cmTypeMacro(cmFindFileCommand, cmFindPathCommand);
+protected:
+  virtual void GenerateDocumentation();
 };
 
 
diff --git a/Source/cmFindLibraryCommand.cxx b/Source/cmFindLibraryCommand.cxx
index 9077c8ef4e..b3093764ad 100644
--- a/Source/cmFindLibraryCommand.cxx
+++ b/Source/cmFindLibraryCommand.cxx
@@ -16,6 +16,13 @@
 
 cmFindLibraryCommand::cmFindLibraryCommand()
 { 
+  this->EnvironmentPath = "LIB";
+}
+
+//----------------------------------------------------------------------------
+void cmFindLibraryCommand::GenerateDocumentation()
+{
+  this->cmFindBase::GenerateDocumentation();
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "FIND_XXX", "find_library");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
@@ -29,7 +36,7 @@ cmFindLibraryCommand::cmFindLibraryCommand()
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "XXX_SYSTEM", "LIB");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "CMAKE_SYSTEM_XXX_PATH", 
+                               "CMAKE_SYSTEM_XXX_PATH",
                                "CMAKE_SYSTEM_LIBRARY_PATH");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "SEARCH_XXX_DESC", "library");
@@ -38,11 +45,9 @@ cmFindLibraryCommand::cmFindLibraryCommand()
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "XXX_SUBDIR", "lib");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "CMAKE_FIND_ROOT_PATH_MODE_XXX", 
+                               "CMAKE_FIND_ROOT_PATH_MODE_XXX",
                                "CMAKE_FIND_ROOT_PATH_MODE_LIBRARY");
-
-  this->EnvironmentPath = "LIB";
-  this->GenericDocumentation += 
+  this->GenericDocumentation +=
     "\n"
     "If the library found is a framework, then VAR will be set to "
     "the full path to the framework <fullPath>/A.framework. "
diff --git a/Source/cmFindLibraryCommand.h b/Source/cmFindLibraryCommand.h
index 486c2cf5a3..7930f521de 100644
--- a/Source/cmFindLibraryCommand.h
+++ b/Source/cmFindLibraryCommand.h
@@ -64,6 +64,7 @@ protected:
   void AddArchitecturePaths(const char* suffix);
   void AddLib64Paths();
   std::string FindLibrary();
+  virtual void GenerateDocumentation();
 private:
   std::string FindNormalLibrary();
   std::string FindFrameworkLibrary();
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index ef0197a5ad..fdc1a01162 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -51,13 +51,6 @@ void cmFindPackageNeedBackwardsCompatibility(const std::string& variable,
 //----------------------------------------------------------------------------
 cmFindPackageCommand::cmFindPackageCommand()
 {
-  cmSystemTools::ReplaceString(this->GenericDocumentationRootPath,
-                               "CMAKE_FIND_ROOT_PATH_MODE_XXX",
-                               "CMAKE_FIND_ROOT_PATH_MODE_PACKAGE");
-  cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
-                               "FIND_ARGS_XXX", "<package>");
-  cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
-                               "FIND_XXX", "find_package");
   this->CMakePathName = "PACKAGE";
   this->Quiet = false;
   this->Required = false;
@@ -78,6 +71,19 @@ cmFindPackageCommand::cmFindPackageCommand()
   this->VersionFoundPatch = 0;
   this->VersionFoundTweak = 0;
   this->VersionFoundCount = 0;
+}
+
+//----------------------------------------------------------------------------
+void cmFindPackageCommand::GenerateDocumentation()
+{
+  this->cmFindCommon::GenerateDocumentation();
+  cmSystemTools::ReplaceString(this->GenericDocumentationRootPath,
+                               "CMAKE_FIND_ROOT_PATH_MODE_XXX",
+                               "CMAKE_FIND_ROOT_PATH_MODE_PACKAGE");
+  cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
+                               "FIND_ARGS_XXX", "<package>");
+  cmSystemTools::ReplaceString(this->GenericDocumentationPathsOrder,
+                               "FIND_XXX", "find_package");
   this->CommandDocumentation =
     "  find_package(<package> [version] [EXACT] [QUIET]\n"
     "               [[REQUIRED|COMPONENTS] [components...]]\n"
@@ -318,6 +324,10 @@ cmFindPackageCommand::cmFindPackageCommand()
 //----------------------------------------------------------------------------
 const char* cmFindPackageCommand::GetFullDocumentation()
 {
+  if(this->CommandDocumentation.empty())
+    {
+    this->GenerateDocumentation();
+    }
   return this->CommandDocumentation.c_str();
 }
 
diff --git a/Source/cmFindPackageCommand.h b/Source/cmFindPackageCommand.h
index 57aeab969e..19d2b1099d 100644
--- a/Source/cmFindPackageCommand.h
+++ b/Source/cmFindPackageCommand.h
@@ -65,6 +65,8 @@ public:
   virtual const char* GetFullDocumentation();
 
   cmTypeMacro(cmFindPackageCommand, cmFindCommon);
+protected:
+  virtual void GenerateDocumentation();
 private:
   void AppendSuccessInformation();
   void AppendToProperty(const char* propertyName);
diff --git a/Source/cmFindPathCommand.cxx b/Source/cmFindPathCommand.cxx
index cca243a87b..83b651b716 100644
--- a/Source/cmFindPathCommand.cxx
+++ b/Source/cmFindPathCommand.cxx
@@ -18,6 +18,11 @@ cmFindPathCommand::cmFindPathCommand()
 {
   this->EnvironmentPath = "INCLUDE";
   this->IncludeFileInPath = false;
+}
+
+void cmFindPathCommand::GenerateDocumentation()
+{
+  this->cmFindBase::GenerateDocumentation();
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "FIND_XXX", "find_path");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
@@ -31,27 +36,21 @@ cmFindPathCommand::cmFindPathCommand()
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "XXX_SYSTEM", "INCLUDE");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "CMAKE_SYSTEM_XXX_PATH", 
-                               "CMAKE_SYSTEM_INCLUDE_PATH"); 
+                               "CMAKE_SYSTEM_XXX_PATH",
+                               "CMAKE_SYSTEM_INCLUDE_PATH");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "SEARCH_XXX_DESC", 
+                               "SEARCH_XXX_DESC",
                                "directory containing the named file");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "SEARCH_XXX", "file in a directory");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "XXX_SUBDIR", "include");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "CMAKE_FIND_ROOT_PATH_MODE_XXX", 
+                               "CMAKE_FIND_ROOT_PATH_MODE_XXX",
                                "CMAKE_FIND_ROOT_PATH_MODE_INCLUDE");
-
-  this->ExtraDocAdded = false;
-}
-
-const char* cmFindPathCommand::GetFullDocumentation()
-{
-  if(!this->ExtraDocAdded && !this->IncludeFileInPath)
+  if(!this->IncludeFileInPath)
     {
-    this->GenericDocumentation += 
+    this->GenericDocumentation +=
       "\n"
       "When searching for frameworks, if the file is specified as "
       "A/b.h, then the framework search will look for "
@@ -59,9 +58,7 @@ const char* cmFindPathCommand::GetFullDocumentation()
       "If that is found the path will be set to the path to the framework. "
       "CMake will convert this to the correct -F option to include the "
       "file. ";
-    this->ExtraDocAdded = true;
     }
-  return this->GenericDocumentation.c_str();
 }
 
 // cmFindPathCommand
diff --git a/Source/cmFindPathCommand.h b/Source/cmFindPathCommand.h
index 3c04343e71..bd94779831 100644
--- a/Source/cmFindPathCommand.h
+++ b/Source/cmFindPathCommand.h
@@ -59,10 +59,10 @@ public:
     return "Find the directory containing a file.";
     }
 
-  virtual const char* GetFullDocumentation();
   cmTypeMacro(cmFindPathCommand, cmFindBase);
   bool IncludeFileInPath;
-  bool ExtraDocAdded;
+protected:
+  virtual void GenerateDocumentation();
 private:
   std::string FindHeaderInFramework(std::string const& file,
                                     std::string const& dir);
diff --git a/Source/cmFindProgramCommand.cxx b/Source/cmFindProgramCommand.cxx
index 519f862551..71cfdcbbe8 100644
--- a/Source/cmFindProgramCommand.cxx
+++ b/Source/cmFindProgramCommand.cxx
@@ -16,9 +16,10 @@
 #if defined(__APPLE__)
 #include <CoreFoundation/CoreFoundation.h>
 #endif
-  
-cmFindProgramCommand::cmFindProgramCommand()
+
+void cmFindProgramCommand::GenerateDocumentation()
 {
+  this->cmFindBase::GenerateDocumentation();
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "FIND_XXX", "find_program");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
@@ -32,8 +33,8 @@ cmFindProgramCommand::cmFindProgramCommand()
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "XXX_SYSTEM", "");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "CMAKE_SYSTEM_XXX_PATH", 
-                               "CMAKE_SYSTEM_PROGRAM_PATH"); 
+                               "CMAKE_SYSTEM_XXX_PATH",
+                               "CMAKE_SYSTEM_PROGRAM_PATH");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "SEARCH_XXX_DESC", "program");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
@@ -41,7 +42,7 @@ cmFindProgramCommand::cmFindProgramCommand()
   cmSystemTools::ReplaceString(this->GenericDocumentation,
                                "XXX_SUBDIR", "[s]bin");
   cmSystemTools::ReplaceString(this->GenericDocumentation,
-                               "CMAKE_FIND_ROOT_PATH_MODE_XXX", 
+                               "CMAKE_FIND_ROOT_PATH_MODE_XXX",
                                "CMAKE_FIND_ROOT_PATH_MODE_PROGRAM");
 }
 
diff --git a/Source/cmFindProgramCommand.h b/Source/cmFindProgramCommand.h
index ae790a3d9c..654e834bf5 100644
--- a/Source/cmFindProgramCommand.h
+++ b/Source/cmFindProgramCommand.h
@@ -25,7 +25,6 @@
 class cmFindProgramCommand : public cmFindBase
 {
 public:
-  cmFindProgramCommand();
   /**
    * This is a virtual constructor for the command.
    */
@@ -63,6 +62,7 @@ public:
 
 protected:
   std::string FindProgram(std::vector<std::string> names);
+  virtual void GenerateDocumentation();
 
 private:
   std::string FindAppBundle(std::vector<std::string> names);