cmState: Store execution context.

Extend snapshot creation API to store the file being executed and the
entry point to get to that context.

6 files changed, 133 insertions, 25 deletions

diff --git a/Source/cmFunctionCommand.cxx b/Source/cmFunctionCommand.cxx
index b3576c3..78853ce 100644
--- a/Source/cmFunctionCommand.cxx
+++ b/Source/cmFunctionCommand.cxx
@@ -95,6 +95,7 @@ bool cmFunctionHelperCommand::InvokeInitialPass
     }
 
   cmMakefile::FunctionPushPop functionScope(this->Makefile,
+                                            this->FilePath,
                                             this->Policies);
 
   // set the value of argc
diff --git a/Source/cmMacroCommand.cxx b/Source/cmMacroCommand.cxx
index 0b945b2..3c2117b 100644
--- a/Source/cmMacroCommand.cxx
+++ b/Source/cmMacroCommand.cxx
@@ -97,6 +97,7 @@ bool cmMacroHelperCommand::InvokeInitialPass
     }
 
   cmMakefile::MacroPushPop macroScope(this->Makefile,
+                                      this->FilePath,
                                       this->Policies);
 
   // set the value of argc
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index a176cda..eb26474 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -465,8 +465,11 @@ cmMakefile::IncludeScope::IncludeScope(cmMakefile* mf,
   this->Makefile->PushFunctionBlockerBarrier();
 
   this->Makefile->StateSnapshot =
-        this->Makefile->GetState()->CreateCallStackSnapshot(
-            this->Makefile->StateSnapshot);
+      this->Makefile->GetState()->CreateCallStackSnapshot(
+        this->Makefile->StateSnapshot,
+        this->Makefile->ContextStack.back()->Name,
+        this->Makefile->ContextStack.back()->Line,
+        filenametoread);
 }
 
 //----------------------------------------------------------------------------
@@ -576,9 +579,16 @@ public:
     this->Makefile->ListFileStack.push_back(filenametoread);
     this->Makefile->PushPolicyBarrier();
 
+    long line = 0;
+    std::string name;
+    if (!this->Makefile->ContextStack.empty())
+      {
+      line = this->Makefile->ContextStack.back()->Line;
+      name = this->Makefile->ContextStack.back()->Name;
+      }
     this->Makefile->StateSnapshot =
         this->Makefile->GetState()->CreateInlineListFileSnapshot(
-          this->Makefile->StateSnapshot);
+          this->Makefile->StateSnapshot, name, line, filenametoread);
     assert(this->Makefile->StateSnapshot.IsValid());
     this->Makefile->PushFunctionBlockerBarrier();
   }
@@ -1590,11 +1600,14 @@ void cmMakefile::InitializeFromParent(cmMakefile* parent)
   this->ImportedTargets = parent->ImportedTargets;
 }
 
-void cmMakefile::PushFunctionScope(const cmPolicies::PolicyMap& pm)
+void cmMakefile::PushFunctionScope(std::string const& fileName,
+                                   const cmPolicies::PolicyMap& pm)
 {
   this->StateSnapshot =
       this->GetState()->CreateFunctionCallSnapshot(
-        this->StateSnapshot);
+        this->StateSnapshot,
+        this->ContextStack.back()->Name, this->ContextStack.back()->Line,
+        fileName);
   assert(this->StateSnapshot.IsValid());
 
   this->Internal->PushDefinitions();
@@ -1632,11 +1645,14 @@ void cmMakefile::PopFunctionScope(bool reportError)
   this->Internal->PopDefinitions();
 }
 
-void cmMakefile::PushMacroScope(const cmPolicies::PolicyMap& pm)
+void cmMakefile::PushMacroScope(std::string const& fileName,
+                                const cmPolicies::PolicyMap& pm)
 {
   this->StateSnapshot =
       this->GetState()->CreateMacroCallSnapshot(
-        this->StateSnapshot);
+        this->StateSnapshot,
+        this->ContextStack.back()->Name, this->ContextStack.back()->Line,
+        fileName);
   assert(this->StateSnapshot.IsValid());
 
   this->PushFunctionBlockerBarrier();
@@ -1670,6 +1686,7 @@ public:
     std::string currentStart =
         this->Makefile->StateSnapshot.GetCurrentSourceDirectory();
     currentStart += "/CMakeLists.txt";
+    this->Makefile->StateSnapshot.SetListFile(currentStart);
     this->Makefile->ListFileStack.push_back(currentStart);
     this->Makefile->PushPolicyBarrier();
     this->Makefile->PushFunctionBlockerBarrier();
@@ -1813,7 +1830,9 @@ void cmMakefile::AddSubDirectory(const std::string& srcPath,
     }
 
   cmState::Snapshot newSnapshot = this->GetState()
-      ->CreateBuildsystemDirectorySnapshot(this->StateSnapshot);
+      ->CreateBuildsystemDirectorySnapshot(this->StateSnapshot,
+                                           this->ContextStack.back()->Name,
+                                           this->ContextStack.back()->Line);
 
   // create a new local generator and set its parent
   cmLocalGenerator *lg2 = this->GetGlobalGenerator()
@@ -5511,10 +5530,11 @@ AddRequiredTargetCFeature(cmTarget *target, const std::string& feature) const
 
 
 cmMakefile::FunctionPushPop::FunctionPushPop(cmMakefile* mf,
+                                             const std::string& fileName,
                                              cmPolicies::PolicyMap const& pm)
   : Makefile(mf), ReportError(true)
 {
-  this->Makefile->PushFunctionScope(pm);
+  this->Makefile->PushFunctionScope(fileName, pm);
 }
 
 cmMakefile::FunctionPushPop::~FunctionPushPop()
@@ -5524,10 +5544,11 @@ cmMakefile::FunctionPushPop::~FunctionPushPop()
 
 
 cmMakefile::MacroPushPop::MacroPushPop(cmMakefile* mf,
+                                       const std::string& fileName,
                                        const cmPolicies::PolicyMap& pm)
   : Makefile(mf), ReportError(true)
 {
-  this->Makefile->PushMacroScope(pm);
+  this->Makefile->PushMacroScope(fileName, pm);
 }
 
 cmMakefile::MacroPushPop::~MacroPushPop()
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 0ade8e1..01c9e8c 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -720,7 +720,7 @@ public:
   class FunctionPushPop
   {
   public:
-    FunctionPushPop(cmMakefile* mf,
+    FunctionPushPop(cmMakefile* mf, std::string const& fileName,
                     cmPolicies::PolicyMap const& pm);
     ~FunctionPushPop();
 
@@ -733,8 +733,8 @@ public:
   class MacroPushPop
   {
   public:
-    MacroPushPop(cmMakefile* mf,
-                    cmPolicies::PolicyMap const& pm);
+    MacroPushPop(cmMakefile* mf, std::string const& fileName,
+                 cmPolicies::PolicyMap const& pm);
     ~MacroPushPop();
 
     void Quiet() { this->ReportError = false; }
@@ -743,9 +743,11 @@ public:
     bool ReportError;
   };
 
-  void PushFunctionScope(cmPolicies::PolicyMap const& pm);
+  void PushFunctionScope(std::string const& fileName,
+                         cmPolicies::PolicyMap const& pm);
   void PopFunctionScope(bool reportError);
-  void PushMacroScope(cmPolicies::PolicyMap const& pm);
+  void PushMacroScope(std::string const& fileName,
+                      cmPolicies::PolicyMap const& pm);
   void PopMacroScope(bool reportError);
   void PushScope();
   void PopScope();
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index 5ca1cce..d918f65 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -23,8 +23,11 @@ struct cmState::SnapshotDataType
   cmState::PositionType CallStackParent;
   cmState::PositionType DirectoryParent;
   cmState::SnapshotType SnapshotType;
+  cmLinkedTree<std::string>::iterator ExecutionListFile;
   cmLinkedTree<cmState::BuildsystemDirectoryStateType>::iterator
                                                           BuildSystemDirectory;
+  std::string EntryPointCommand;
+  long EntryPointLine;
 };
 
 struct cmState::BuildsystemDirectoryStateType
@@ -227,6 +230,7 @@ cmState::Snapshot cmState::Reset()
 
   this->BuildsystemDirectory.Truncate();
   PositionType pos = this->SnapshotData.Truncate();
+  this->ExecutionListFiles.Truncate();
 
   this->DefineProperty
     ("RULE_LAUNCH_COMPILE", cmProperty::DIRECTORY,
@@ -683,61 +687,98 @@ cmState::Snapshot cmState::CreateBaseSnapshot()
   pos->SnapshotType = BuildsystemDirectoryType;
   pos->BuildSystemDirectory =
       this->BuildsystemDirectory.Extend(this->BuildsystemDirectory.Root());
+  pos->ExecutionListFile =
+      this->ExecutionListFiles.Extend(this->ExecutionListFiles.Root());
   return cmState::Snapshot(this, pos);
 }
 
 cmState::Snapshot
-cmState::CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot)
+cmState::CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot,
+                                    std::string const& entryPointCommand,
+                                    long entryPointLine)
 {
   assert(originSnapshot.IsValid());
   PositionType pos = this->SnapshotData.Extend(originSnapshot.Position);
   pos->CallStackParent = originSnapshot.Position;
+  pos->EntryPointLine = entryPointLine;
+  pos->EntryPointCommand = entryPointCommand;
   pos->DirectoryParent = originSnapshot.Position;
   pos->SnapshotType = BuildsystemDirectoryType;
   pos->BuildSystemDirectory =
       this->BuildsystemDirectory.Extend(
         originSnapshot.Position->BuildSystemDirectory);
+  pos->ExecutionListFile =
+      this->ExecutionListFiles.Extend(
+        originSnapshot.Position->ExecutionListFile);
   return cmState::Snapshot(this, pos);
 }
 
 cmState::Snapshot
-cmState::CreateFunctionCallSnapshot(cmState::Snapshot originSnapshot)
+cmState::CreateFunctionCallSnapshot(cmState::Snapshot originSnapshot,
+                                    std::string const& entryPointCommand,
+                                    long entryPointLine,
+                                    std::string const& fileName)
 {
   PositionType pos = this->SnapshotData.Extend(originSnapshot.Position,
                                                *originSnapshot.Position);
   pos->CallStackParent = originSnapshot.Position;
+  pos->EntryPointLine = entryPointLine;
+  pos->EntryPointCommand = entryPointCommand;
   pos->SnapshotType = FunctionCallType;
+  pos->ExecutionListFile = this->ExecutionListFiles.Extend(
+        originSnapshot.Position->ExecutionListFile, fileName);
   return cmState::Snapshot(this, pos);
 }
 
 
 cmState::Snapshot
-cmState::CreateMacroCallSnapshot(cmState::Snapshot originSnapshot)
+cmState::CreateMacroCallSnapshot(cmState::Snapshot originSnapshot,
+                                    std::string const& entryPointCommand,
+                                    long entryPointLine,
+                                    std::string const& fileName)
 {
   PositionType pos = this->SnapshotData.Extend(originSnapshot.Position,
                                                *originSnapshot.Position);
   pos->CallStackParent = originSnapshot.Position;
+  pos->EntryPointLine = entryPointLine;
+  pos->EntryPointCommand = entryPointCommand;
   pos->SnapshotType = MacroCallType;
+  pos->ExecutionListFile = this->ExecutionListFiles.Extend(
+        originSnapshot.Position->ExecutionListFile, fileName);
   return cmState::Snapshot(this, pos);
 }
 
 cmState::Snapshot
-cmState::CreateCallStackSnapshot(cmState::Snapshot originSnapshot)
+cmState::CreateCallStackSnapshot(cmState::Snapshot originSnapshot,
+                                 const std::string& entryPointCommand,
+                                 long entryPointLine,
+                                 const std::string& fileName)
 {
   PositionType pos = this->SnapshotData.Extend(originSnapshot.Position,
                                                *originSnapshot.Position);
   pos->CallStackParent = originSnapshot.Position;
+  pos->EntryPointLine = entryPointLine;
+  pos->EntryPointCommand = entryPointCommand;
   pos->SnapshotType = CallStackType;
+  pos->ExecutionListFile = this->ExecutionListFiles.Extend(
+        originSnapshot.Position->ExecutionListFile, fileName);
   return cmState::Snapshot(this, pos);
 }
 
 cmState::Snapshot
-cmState::CreateInlineListFileSnapshot(cmState::Snapshot originSnapshot)
+cmState::CreateInlineListFileSnapshot(cmState::Snapshot originSnapshot,
+                                      const std::string& entryPointCommand,
+                                      long entryPointLine,
+                                      const std::string& fileName)
 {
   PositionType pos = this->SnapshotData.Extend(originSnapshot.Position,
                                                *originSnapshot.Position);
   pos->CallStackParent = originSnapshot.Position;
+  pos->EntryPointLine = entryPointLine;
+  pos->EntryPointCommand = entryPointCommand;
   pos->SnapshotType = InlineListFileType;
+  pos->ExecutionListFile = this->ExecutionListFiles.Extend(
+        originSnapshot.Position->ExecutionListFile, fileName);
   return cmState::Snapshot(this, pos);
 }
 
@@ -797,6 +838,11 @@ void cmState::Snapshot::SetCurrentBinaryDirectory(std::string const& dir)
   this->ComputeRelativePathTopBinary();
 }
 
+void cmState::Snapshot::SetListFile(const std::string& listfile)
+{
+  *this->Position->ExecutionListFile = listfile;
+}
+
 std::vector<std::string> const&
 cmState::Snapshot::GetCurrentSourceDirectoryComponents() const
 {
@@ -831,6 +877,21 @@ void cmState::Snapshot::SetRelativePathTopBinary(const char* dir)
   this->Position->BuildSystemDirectory->RelativePathTopBinary = dir;
 }
 
+std::string cmState::Snapshot::GetExecutionListFile() const
+{
+  return *this->Position->ExecutionListFile;
+}
+
+std::string cmState::Snapshot::GetEntryPointCommand() const
+{
+  return this->Position->EntryPointCommand;
+}
+
+long cmState::Snapshot::GetEntryPointLine() const
+{
+  return this->Position->EntryPointLine;
+}
+
 bool cmState::Snapshot::IsValid() const
 {
   return this->State && this->Position.IsValid()
diff --git a/Source/cmState.h b/Source/cmState.h
index e35b843..473a194 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -47,6 +47,8 @@ public:
     const char* GetCurrentBinaryDirectory() const;
     void SetCurrentBinaryDirectory(std::string const& dir);
 
+    void SetListFile(std::string const& listfile);
+
     std::vector<std::string> const&
     GetCurrentSourceDirectoryComponents() const;
     std::vector<std::string> const&
@@ -57,6 +59,10 @@ public:
     void SetRelativePathTopSource(const char* dir);
     void SetRelativePathTopBinary(const char* dir);
 
+    std::string GetExecutionListFile() const;
+    std::string GetEntryPointCommand() const;
+    long GetEntryPointLine() const;
+
     bool IsValid() const;
     Snapshot GetBuildsystemDirectoryParent() const;
     Snapshot GetCallStackParent() const;
@@ -75,11 +81,25 @@ public:
 
   Snapshot CreateBaseSnapshot();
   Snapshot
-  CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot);
-  Snapshot CreateFunctionCallSnapshot(Snapshot originSnapshot);
-  Snapshot CreateMacroCallSnapshot(Snapshot originSnapshot);
-  Snapshot CreateCallStackSnapshot(Snapshot originSnapshot);
-  Snapshot CreateInlineListFileSnapshot(Snapshot originSnapshot);
+  CreateBuildsystemDirectorySnapshot(Snapshot originSnapshot,
+                                     std::string const& entryPointCommand,
+                                     long entryPointLine);
+  Snapshot CreateFunctionCallSnapshot(Snapshot originSnapshot,
+                                      std::string const& entryPointCommand,
+                                      long entryPointLine,
+                                      std::string const& fileName);
+  Snapshot CreateMacroCallSnapshot(Snapshot originSnapshot,
+                                   std::string const& entryPointCommand,
+                                   long entryPointLine,
+                                   std::string const& fileName);
+  Snapshot CreateCallStackSnapshot(Snapshot originSnapshot,
+                                   std::string const& entryPointCommand,
+                                   long entryPointLine,
+                                   std::string const& fileName);
+  Snapshot CreateInlineListFileSnapshot(Snapshot originSnapshot,
+                                        const std::string& entryPointCommand,
+                                        long entryPointLine,
+                                        std::string const& fileName);
   Snapshot Pop(Snapshot originSnapshot);
 
   enum CacheEntryType{ BOOL=0, PATH, FILEPATH, STRING, INTERNAL,STATIC,
@@ -186,6 +206,8 @@ private:
   struct BuildsystemDirectoryStateType;
   cmLinkedTree<BuildsystemDirectoryStateType> BuildsystemDirectory;
 
+  cmLinkedTree<std::string> ExecutionListFiles;
+
   cmLinkedTree<SnapshotDataType> SnapshotData;
 
   std::vector<std::string> SourceDirectoryComponents;