Ninja,Makefile: use `unique_ptr` for memory management

Use a `unique_ptr` to manage the lifetime of the `MacOSXContentGenerator`
and 'OSXBundleGenerator` rather than manually handling the lifetime.

Source/cmMakefileExecutableTargetGenerator.cxx

@@ -9,6 +9,7 @@
 #include <utility>
 #include <vector>
 
+#include "cmAlgorithms.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalUnixMakefileGenerator3.h"
@@ -35,14 +36,12 @@ cmMakefileExecutableTargetGenerator::cmMakefileExecutableTargetGenerator(
     this->GeneratorTarget->GetExecutableNames(this->ConfigName);
 
   this->OSXBundleGenerator =
-    new cmOSXBundleGenerator(target, this->ConfigName);
+    cm::make_unique<cmOSXBundleGenerator>(target, this->ConfigName);
   this->OSXBundleGenerator->SetMacContentFolders(&this->MacContentFolders);
 }
 
-cmMakefileExecutableTargetGenerator::~cmMakefileExecutableTargetGenerator()
-{
-  delete this->OSXBundleGenerator;
-}
+cmMakefileExecutableTargetGenerator::~cmMakefileExecutableTargetGenerator() =
+  default;
 
 void cmMakefileExecutableTargetGenerator::WriteRuleFiles()
 {

Source/cmMakefileLibraryTargetGenerator.cxx

@@ -9,6 +9,7 @@
 #include <utility>
 #include <vector>
 
+#include "cmAlgorithms.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalUnixMakefileGenerator3.h"
@@ -37,14 +38,12 @@ cmMakefileLibraryTargetGenerator::cmMakefileLibraryTargetGenerator(
   }
 
   this->OSXBundleGenerator =
-    new cmOSXBundleGenerator(target, this->ConfigName);
+    cm::make_unique<cmOSXBundleGenerator>(target, this->ConfigName);
   this->OSXBundleGenerator->SetMacContentFolders(&this->MacContentFolders);
 }
 
-cmMakefileLibraryTargetGenerator::~cmMakefileLibraryTargetGenerator()
-{
-  delete this->OSXBundleGenerator;
-}
+cmMakefileLibraryTargetGenerator::~cmMakefileLibraryTargetGenerator() =
+  default;
 
 void cmMakefileLibraryTargetGenerator::WriteRuleFiles()
 {

Source/cmMakefileTargetGenerator.h

@@ -235,7 +235,7 @@ protected:
 
   // macOS content info.
   std::set<std::string> MacContentFolders;
-  cmOSXBundleGenerator* OSXBundleGenerator;
+  std::unique_ptr<cmOSXBundleGenerator> OSXBundleGenerator;
   MacOSXContentGeneratorType* MacOSXContentGenerator;
 };
 

Source/cmMakefileUtilityTargetGenerator.cxx

@@ -7,6 +7,7 @@
 #include <utility>
 #include <vector>
 
+#include "cmAlgorithms.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalUnixMakefileGenerator3.h"
@@ -21,14 +22,12 @@ cmMakefileUtilityTargetGenerator::cmMakefileUtilityTargetGenerator(
 {
   this->CustomCommandDriver = OnUtility;
   this->OSXBundleGenerator =
-    new cmOSXBundleGenerator(target, this->ConfigName);
+    cm::make_unique<cmOSXBundleGenerator>(target, this->ConfigName);
   this->OSXBundleGenerator->SetMacContentFolders(&this->MacContentFolders);
 }
 
-cmMakefileUtilityTargetGenerator::~cmMakefileUtilityTargetGenerator()
-{
-  delete this->OSXBundleGenerator;
-}
+cmMakefileUtilityTargetGenerator::~cmMakefileUtilityTargetGenerator() =
+  default;
 
 void cmMakefileUtilityTargetGenerator::WriteRuleFiles()
 {

Source/cmNinjaNormalTargetGenerator.cxx

@@ -54,14 +54,11 @@ cmNinjaNormalTargetGenerator::cmNinjaNormalTargetGenerator(
   }
 
   this->OSXBundleGenerator =
-    new cmOSXBundleGenerator(target, this->GetConfigName());
+    cm::make_unique<cmOSXBundleGenerator>(target, this->GetConfigName());
   this->OSXBundleGenerator->SetMacContentFolders(&this->MacContentFolders);
 }
 
-cmNinjaNormalTargetGenerator::~cmNinjaNormalTargetGenerator()
-{
-  delete this->OSXBundleGenerator;
-}
+cmNinjaNormalTargetGenerator::~cmNinjaNormalTargetGenerator() = default;
 
 void cmNinjaNormalTargetGenerator::Generate()
 {

Source/cmNinjaTargetGenerator.cxx

@@ -59,13 +59,10 @@ cmNinjaTargetGenerator::cmNinjaTargetGenerator(cmGeneratorTarget* target)
   , LocalGenerator(
       static_cast<cmLocalNinjaGenerator*>(target->GetLocalGenerator()))
 {
-  MacOSXContentGenerator = new MacOSXContentGeneratorType(this);
+  MacOSXContentGenerator = cm::make_unique<MacOSXContentGeneratorType>(this);
 }
 
-cmNinjaTargetGenerator::~cmNinjaTargetGenerator()
-{
-  delete this->MacOSXContentGenerator;
-}
+cmNinjaTargetGenerator::~cmNinjaTargetGenerator() = default;
 
 cmGeneratedFileStream& cmNinjaTargetGenerator::GetBuildFileStream() const
 {
@@ -813,11 +810,11 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatements()
   std::vector<cmSourceFile const*> headerSources;
   this->GeneratorTarget->GetHeaderSources(headerSources, config);
   this->OSXBundleGenerator->GenerateMacOSXContentStatements(
-    headerSources, this->MacOSXContentGenerator);
+    headerSources, this->MacOSXContentGenerator.get());
   std::vector<cmSourceFile const*> extraSources;
   this->GeneratorTarget->GetExtraSources(extraSources, config);
   this->OSXBundleGenerator->GenerateMacOSXContentStatements(
-    extraSources, this->MacOSXContentGenerator);
+    extraSources, this->MacOSXContentGenerator.get());
   std::vector<cmSourceFile const*> externalObjects;
   this->GeneratorTarget->GetExternalObjects(externalObjects, config);
   for (cmSourceFile const* sf : externalObjects) {

Source/cmNinjaTargetGenerator.h

@@ -153,9 +153,9 @@ protected:
   };
   friend struct MacOSXContentGeneratorType;
 
-  MacOSXContentGeneratorType* MacOSXContentGenerator;
+  std::unique_ptr<MacOSXContentGeneratorType> MacOSXContentGenerator;
   // Properly initialized by sub-classes.
-  cmOSXBundleGenerator* OSXBundleGenerator;
+  std::unique_ptr<cmOSXBundleGenerator> OSXBundleGenerator;
   std::set<std::string> MacContentFolders;
 
   void addPoolNinjaVariable(const std::string& pool_property,