cmTarget: Move member `PolicyMap` to impl

Source/cmTarget.cxx

@@ -167,6 +167,7 @@ class cmTargetInternals
 public:
   cmStateEnums::TargetType TargetType;
   cmMakefile* Makefile;
+  cmPolicies::PolicyMap PolicyMap;
   cmPropertyMap Properties;
   std::set<BT<std::string>> Utilities;
   std::set<std::string> SystemIncludeDirectories;
@@ -422,14 +423,14 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
   }
 
   // Record current policies for later use.
-  impl->Makefile->RecordPolicies(this->PolicyMap);
+  impl->Makefile->RecordPolicies(impl->PolicyMap);
 
   if (impl->TargetType == cmStateEnums::INTERFACE_LIBRARY) {
     // This policy is checked in a few conditions. The properties relevant
     // to the policy are always ignored for cmStateEnums::INTERFACE_LIBRARY
     // targets,
     // so ensure that the conditions don't lead to nonsense.
-    this->PolicyMap.Set(cmPolicies::CMP0022, cmPolicies::NEW);
+    impl->PolicyMap.Set(cmPolicies::CMP0022, cmPolicies::NEW);
   }
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
@@ -478,6 +479,17 @@ cmMakefile* cmTarget::GetMakefile() const
   return impl->Makefile;
 }
 
+cmPolicies::PolicyMap const& cmTarget::GetPolicyMap() const
+{
+  return impl->PolicyMap;
+}
+
+cmPolicies::PolicyStatus cmTarget::GetPolicyStatus(
+  cmPolicies::PolicyID policy) const
+{
+  return impl->PolicyMap.Get(policy);
+}
+
 cmGlobalGenerator* cmTarget::GetGlobalGenerator() const
 {
   return impl->Makefile->GetGlobalGenerator();

Source/cmTarget.h

@@ -78,10 +78,16 @@ public:
   ///! Set/Get the name of the target
   const std::string& GetName() const { return this->Name; }
 
+  ///! Get the policy map
+  cmPolicies::PolicyMap const& GetPolicyMap() const;
+
+  ///! Get policy status
+  cmPolicies::PolicyStatus GetPolicyStatus(cmPolicies::PolicyID policy) const;
+
 #define DECLARE_TARGET_POLICY(POLICY)                                         \
   cmPolicies::PolicyStatus GetPolicyStatus##POLICY() const                    \
   {                                                                           \
-    return this->PolicyMap.Get(cmPolicies::POLICY);                           \
+    return this->GetPolicyStatus(cmPolicies::POLICY);                         \
   }
 
   CM_FOR_EACH_TARGET_POLICY(DECLARE_TARGET_POLICY)
@@ -291,7 +297,6 @@ private:
 
 private:
   bool IsGeneratorProvided;
-  cmPolicies::PolicyMap PolicyMap;
   std::string Name;
   std::string InstallPath;
   std::string RuntimeInstallPath;