cmMakefile: Modernize AddFunctionBlocker method to accept a std::unique_ptr

Source/CTest/cmCTestScriptHandler.cxx

@@ -4,13 +4,6 @@
 
 #include "cmsys/Directory.hxx"
 #include "cmsys/Process.h"
-#include <map>
-#include <ratio>
-#include <sstream>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <utility>
 
 #include "cm_memory.hxx"
 
@@ -41,6 +34,15 @@
 #include "cmSystemTools.h"
 #include "cmake.h"
 
+#include <map>
+#include <memory>
+#include <ratio>
+#include <sstream>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <utility>
+
 #ifdef _WIN32
 #  include <windows.h>
 #else
@@ -372,9 +374,11 @@ int cmCTestScriptHandler::ReadInScript(const std::string& total_script_arg)
 #endif
 
   // always add a function blocker to update the elapsed time
-  cmCTestScriptFunctionBlocker* f = new cmCTestScriptFunctionBlocker();
-  f->CTestScriptHandler = this;
-  this->Makefile->AddFunctionBlocker(f);
+  {
+    auto fb = cm::make_unique<cmCTestScriptFunctionBlocker>();
+    fb->CTestScriptHandler = this;
+    this->Makefile->AddFunctionBlocker(std::move(fb));
+  }
 
   /* Execute CTestScriptMode.cmake, which loads CMakeDetermineSystem and
   CMakeSystemSpecificInformation, so

Source/cmForEachCommand.cxx

@@ -5,6 +5,7 @@
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
+#include <utility>
 
 #include "cm_memory.hxx"
 
@@ -121,7 +122,7 @@ bool cmForEachCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // create a function blocker
-  auto f = cm::make_unique<cmForEachFunctionBlocker>(this->Makefile);
+  auto fb = cm::make_unique<cmForEachFunctionBlocker>(this->Makefile);
   if (args.size() > 1) {
     if (args[1] == "RANGE") {
       int start = 0;
@@ -168,23 +169,22 @@ bool cmForEachCommand::InitialPass(std::vector<std::string> const& args,
           break;
         }
       }
-      f->Args = range;
+      fb->Args = range;
     } else {
-      f->Args = args;
+      fb->Args = args;
     }
   } else {
-    f->Args = args;
+    fb->Args = args;
   }
-  this->Makefile->AddFunctionBlocker(f.release());
+  this->Makefile->AddFunctionBlocker(std::move(fb));
 
   return true;
 }
 
 bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
 {
-  std::unique_ptr<cmForEachFunctionBlocker> f(
-    new cmForEachFunctionBlocker(this->Makefile));
-  f->Args.push_back(args[0]);
+  auto fb = cm::make_unique<cmForEachFunctionBlocker>(this->Makefile);
+  fb->Args.push_back(args[0]);
 
   enum Doing
   {
@@ -195,7 +195,7 @@ bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
   Doing doing = DoingNone;
   for (unsigned int i = 2; i < args.size(); ++i) {
     if (doing == DoingItems) {
-      f->Args.push_back(args[i]);
+      fb->Args.push_back(args[i]);
     } else if (args[i] == "LISTS") {
       doing = DoingLists;
     } else if (args[i] == "ITEMS") {
@@ -203,7 +203,7 @@ bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
     } else if (doing == DoingLists) {
       const char* value = this->Makefile->GetDefinition(args[i]);
       if (value && *value) {
-        cmSystemTools::ExpandListArgument(value, f->Args, true);
+        cmSystemTools::ExpandListArgument(value, fb->Args, true);
       }
     } else {
       std::ostringstream e;
@@ -214,7 +214,7 @@ bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
     }
   }
 
-  this->Makefile->AddFunctionBlocker(f.release()); // TODO: pass unique_ptr
+  this->Makefile->AddFunctionBlocker(std::move(fb));
 
   return true;
 }

Source/cmFunctionCommand.cxx

@@ -179,8 +179,10 @@ bool cmFunctionCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // create a function blocker
-  cmFunctionFunctionBlocker* f = new cmFunctionFunctionBlocker();
-  cmAppend(f->Args, args);
-  this->Makefile->AddFunctionBlocker(f);
+  {
+    auto fb = cm::make_unique<cmFunctionFunctionBlocker>();
+    cmAppend(fb->Args, args);
+    this->Makefile->AddFunctionBlocker(std::move(fb));
+  }
   return true;
 }

Source/cmIfCommand.cxx

@@ -2,6 +2,8 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmIfCommand.h"
 
+#include "cm_memory.hxx"
+
 #include "cmConditionEvaluator.h"
 #include "cmExecutionStatus.h"
 #include "cmExpandedCommandArgument.h"
@@ -11,6 +13,8 @@
 #include "cmSystemTools.h"
 #include "cmake.h"
 
+#include <utility>
+
 static std::string cmIfCommandError(
   std::vector<cmExpandedCommandArgument> const& args)
 {
@@ -200,15 +204,17 @@ bool cmIfCommand::InvokeInitialPass(
     this->Makefile->IssueMessage(status, err);
   }
 
-  cmIfFunctionBlocker* f = new cmIfFunctionBlocker();
-  // if is isn't true block the commands
-  f->ScopeDepth = 1;
-  f->IsBlocking = !isTrue;
-  if (isTrue) {
-    f->HasRun = true;
+  {
+    auto fb = cm::make_unique<cmIfFunctionBlocker>();
+    // if is isn't true block the commands
+    fb->ScopeDepth = 1;
+    fb->IsBlocking = !isTrue;
+    if (isTrue) {
+      fb->HasRun = true;
+    }
+    fb->Args = args;
+    this->Makefile->AddFunctionBlocker(std::move(fb));
   }
-  f->Args = args;
-  this->Makefile->AddFunctionBlocker(f);
 
   return true;
 }

Source/cmMacroCommand.cxx

@@ -213,8 +213,10 @@ bool cmMacroCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // create a function blocker
-  cmMacroFunctionBlocker* f = new cmMacroFunctionBlocker();
-  cmAppend(f->Args, args);
-  this->Makefile->AddFunctionBlocker(f);
+  {
+    auto fb = cm::make_unique<cmMacroFunctionBlocker>();
+    cmAppend(fb->Args, args);
+    this->Makefile->AddFunctionBlocker(std::move(fb));
+  }
   return true;
 }

Source/cmMakefile.cxx

@@ -118,7 +118,6 @@ cmMakefile::~cmMakefile()
   cmDeleteAll(this->SourceFiles);
   cmDeleteAll(this->Tests);
   cmDeleteAll(this->ImportedTargetsOwned);
-  cmDeleteAll(this->FunctionBlockers);
   cmDeleteAll(this->EvaluationFiles);
 }
 
@@ -3076,13 +3075,13 @@ bool cmMakefile::IsFunctionBlocked(const cmListFileFunction& lff,
                                    cmExecutionStatus& status)
 {
   // if there are no blockers get out of here
-  if (this->FunctionBlockers.begin() == this->FunctionBlockers.end()) {
+  if (this->FunctionBlockers.empty()) {
     return false;
   }
 
   // loop over all function blockers to see if any block this command
   // evaluate in reverse, this is critical for balanced IF statements etc
-  for (cmFunctionBlocker* pos : cmReverseRange(this->FunctionBlockers)) {
+  for (auto const& pos : cmReverseRange(this->FunctionBlockers)) {
     if (pos->IsFunctionBlocked(lff, *this, status)) {
       return true;
     }
@@ -3102,7 +3101,8 @@ void cmMakefile::PopFunctionBlockerBarrier(bool reportError)
   FunctionBlockersType::size_type barrier =
     this->FunctionBlockerBarriers.back();
   while (this->FunctionBlockers.size() > barrier) {
-    std::unique_ptr<cmFunctionBlocker> fb(this->FunctionBlockers.back());
+    std::unique_ptr<cmFunctionBlocker> fb(
+      std::move(this->FunctionBlockers.back()));
     this->FunctionBlockers.pop_back();
     if (reportError) {
       // Report the context in which the unclosed block was opened.
@@ -3227,14 +3227,14 @@ bool cmMakefile::ExpandArguments(
   return !cmSystemTools::GetFatalErrorOccured();
 }
 
-void cmMakefile::AddFunctionBlocker(cmFunctionBlocker* fb)
+void cmMakefile::AddFunctionBlocker(std::unique_ptr<cmFunctionBlocker> fb)
 {
   if (!this->ExecutionStatusStack.empty()) {
     // Record the context in which the blocker is created.
     fb->SetStartingContext(this->GetExecutionContext());
   }
 
-  this->FunctionBlockers.push_back(fb);
+  this->FunctionBlockers.push_back(std::move(fb));
 }
 
 std::unique_ptr<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
@@ -3250,9 +3250,8 @@ std::unique_ptr<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
   // Search for the function blocker whose scope this command ends.
   for (FunctionBlockersType::size_type i = this->FunctionBlockers.size();
        i > barrier; --i) {
-    std::vector<cmFunctionBlocker*>::iterator pos =
-      this->FunctionBlockers.begin() + (i - 1);
-    if (*pos == fb) {
+    auto pos = this->FunctionBlockers.begin() + (i - 1);
+    if (pos->get() == fb) {
       // Warn if the arguments do not match, but always remove.
       if (!(*pos)->ShouldRemove(lff, *this)) {
         cmListFileContext const& lfc = fb->GetStartingContext();
@@ -3268,9 +3267,9 @@ std::unique_ptr<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
         /* clang-format on */
         this->IssueMessage(MessageType::AUTHOR_WARNING, e.str());
       }
-      cmFunctionBlocker* b = *pos;
+      std::unique_ptr<cmFunctionBlocker> b = std::move(*pos);
       this->FunctionBlockers.erase(pos);
-      return std::unique_ptr<cmFunctionBlocker>(b);
+      return b;
     }
   }
 

Source/cmMakefile.h

@@ -17,6 +17,7 @@
 #include <vector>
 
 #include "cmAlgorithms.h"
+#include "cmFunctionBlocker.h"
 #include "cmListFileCache.h"
 #include "cmMessageType.h"
 #include "cmNewLineStyle.h"
@@ -36,7 +37,6 @@ class cmCustomCommandLines;
 class cmExecutionStatus;
 class cmExpandedCommandArgument;
 class cmExportBuildFileGenerator;
-class cmFunctionBlocker;
 class cmGeneratorExpressionEvaluationFile;
 class cmGlobalGenerator;
 class cmInstallGenerator;
@@ -95,7 +95,7 @@ public:
   /**
    * Add a function blocker to this makefile
    */
-  void AddFunctionBlocker(cmFunctionBlocker* fb);
+  void AddFunctionBlocker(std::unique_ptr<cmFunctionBlocker> fb);
 
   /// @return whether we are processing the top CMakeLists.txt file.
   bool IsRootMakefile() const;
@@ -955,7 +955,7 @@ private:
   bool EnforceUniqueDir(const std::string& srcPath,
                         const std::string& binPath) const;
 
-  typedef std::vector<cmFunctionBlocker*> FunctionBlockersType;
+  typedef std::vector<std::unique_ptr<cmFunctionBlocker>> FunctionBlockersType;
   FunctionBlockersType FunctionBlockers;
   std::vector<FunctionBlockersType::size_type> FunctionBlockerBarriers;
   void PushFunctionBlockerBarrier();

Source/cmWhileCommand.cxx

@@ -2,6 +2,8 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmWhileCommand.h"
 
+#include "cm_memory.hxx"
+
 #include "cmConditionEvaluator.h"
 #include "cmExecutionStatus.h"
 #include "cmExpandedCommandArgument.h"
@@ -9,6 +11,8 @@
 #include "cmMessageType.h"
 #include "cmSystemTools.h"
 
+#include <utility>
+
 cmWhileFunctionBlocker::cmWhileFunctionBlocker(cmMakefile* mf)
   : Makefile(mf)
   , Depth(0)
@@ -134,9 +138,10 @@ bool cmWhileCommand::InvokeInitialPass(
   }
 
   // create a function blocker
-  cmWhileFunctionBlocker* f = new cmWhileFunctionBlocker(this->Makefile);
-  f->Args = args;
-  this->Makefile->AddFunctionBlocker(f);
-
+  {
+    auto fb = cm::make_unique<cmWhileFunctionBlocker>(this->Makefile);
+    fb->Args = args;
+    this->Makefile->AddFunctionBlocker(std::move(fb));
+  }
   return true;
 }