Merge topic 'clean-up-backtrace-handling'

8b4b9631 cmake: Add IssueMessage overload taking a single cmListFileContext.
46656aa1 cmake: Extract displayMessage method.
55fc5e7c cmake: Extract printMessageText method.
ca7cc2eb cmake: Extract PrintMessagePreamble method.
fa752bf3 cmake: Move isError determination to a more-natural place.

4 files changed, 86 insertions, 51 deletions

diff --git a/Source/cmCommandArgumentParserHelper.cxx b/Source/cmCommandArgumentParserHelper.cxx
index c816c23..bd098a5 100644
--- a/Source/cmCommandArgumentParserHelper.cxx
+++ b/Source/cmCommandArgumentParserHelper.cxx
@@ -14,6 +14,7 @@
 #include "cmSystemTools.h"
 #include "cmMakefile.h"
 #include "cmState.h"
+#include "cmLocalGenerator.h"
 
 #include "cmCommandArgumentLexer.h"
 
@@ -139,14 +140,14 @@ char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
                                      this->Makefile->GetHomeOutputDirectory()))
         {
         std::ostringstream msg;
-        cmListFileBacktrace bt(this->Makefile->GetLocalGenerator());
         cmListFileContext lfc;
-        lfc.FilePath = this->FileName;
+        lfc.FilePath = this->Makefile->GetLocalGenerator()
+            ->Convert(this->FileName, cmLocalGenerator::HOME);
+
         lfc.Line = this->FileLine;
-        bt.Append(lfc);
         msg << "uninitialized variable \'" << var << "\'";
         this->Makefile->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING,
-                                                        msg.str(), bt);
+                                                        msg.str(), lfc);
         }
       }
     return 0;
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 2a49c8f..3e8ae85 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -249,19 +249,13 @@ void cmMakefile::IssueMessage(cmake::MessageType t,
                               std::string const& text) const
 {
   // Collect context information.
-  cmLocalGenerator* localGen = this->GetLocalGenerator();
-  if(this->CallStack.empty() && this->GetCMakeInstance()->GetIsInTryCompile())
-    {
-    localGen = 0;
-    }
-  cmListFileBacktrace backtrace(localGen);
   if(!this->CallStack.empty())
     {
     if((t == cmake::FATAL_ERROR) || (t == cmake::INTERNAL_ERROR))
       {
       this->CallStack.back().Status->SetNestedError(true);
       }
-    backtrace = this->GetBacktrace();
+    this->GetCMakeInstance()->IssueMessage(t, text, this->GetBacktrace());
     }
   else
     {
@@ -278,12 +272,15 @@ void cmMakefile::IssueMessage(cmake::MessageType t,
       // command.  Add whatever context information we have.
       lfc.FilePath = this->ListFileStack.back();
       }
+    if(!this->CallStack.empty()
+       || !this->GetCMakeInstance()->GetIsInTryCompile())
+      {
+      lfc.FilePath = this->LocalGenerator->Convert(lfc.FilePath,
+                                                   cmLocalGenerator::HOME);
+      }
     lfc.Line = 0;
-    backtrace.Append(lfc);
+    this->GetCMakeInstance()->IssueMessage(t, text, lfc);
     }
-
-  // Issue the message.
-  this->GetCMakeInstance()->IssueMessage(t, text, backtrace);
 }
 
 //----------------------------------------------------------------------------
@@ -1837,22 +1834,22 @@ void cmMakefile::LogUnused(const char* reason,
   if (this->WarnUnused)
     {
     std::string path;
-    cmListFileBacktrace bt(this->GetLocalGenerator());
+    cmListFileContext lfc;
     if (!this->CallStack.empty())
       {
-      cmListFileContext file = this->GetExecutionContext();
-      bt.Append(file);
-      path = file.FilePath;
+      lfc = this->GetExecutionContext();
+      path = lfc.FilePath;
       }
     else
       {
       path = this->GetCurrentSourceDirectory();
       path += "/CMakeLists.txt";
-      cmListFileContext lfc;
       lfc.FilePath = path;
       lfc.Line = 0;
-      bt.Append(lfc);
       }
+    lfc.FilePath = this->LocalGenerator->Convert(lfc.FilePath,
+                                                 cmLocalGenerator::HOME);
+
     if (this->CheckSystemVars ||
         cmSystemTools::IsSubDirectory(path,
                                       this->GetHomeDirectory()) ||
@@ -1865,7 +1862,7 @@ void cmMakefile::LogUnused(const char* reason,
       msg << "unused variable (" << reason << ") \'" << name << "\'";
       this->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING,
                                              msg.str(),
-                                             bt);
+                                             lfc);
       }
     }
 }
@@ -2769,14 +2766,13 @@ cmake::MessageType cmMakefile::ExpandVariablesInStringNew(
                                              this->GetHomeOutputDirectory()))
                 {
                 std::ostringstream msg;
-                cmListFileBacktrace bt(this->GetLocalGenerator());
                 cmListFileContext lfc;
-                lfc.FilePath = filename;
+                lfc.FilePath = this->LocalGenerator
+                    ->Convert(filename, cmLocalGenerator::HOME);
                 lfc.Line = line;
-                bt.Append(lfc);
                 msg << "uninitialized variable \'" << lookup << "\'";
                 this->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING,
-                                                       msg.str(), bt);
+                                                       msg.str(), lfc);
                 }
               }
             }
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index bb9efc2..b4565e7 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -2432,24 +2432,15 @@ static bool cmakeCheckStampList(const char* stampList)
   return true;
 }
 
-//----------------------------------------------------------------------------
-void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
-                         cmListFileBacktrace const& bt)
+bool cmake::PrintMessagePreamble(cmake::MessageType t, std::ostream& msg)
 {
-  cmListFileBacktrace backtrace = bt;
-  backtrace.MakeRelative();
-
-  std::ostringstream msg;
-  bool isError = false;
   // Construct the message header.
   if(t == cmake::FATAL_ERROR)
     {
-    isError = true;
     msg << "CMake Error";
     }
   else if(t == cmake::INTERNAL_ERROR)
     {
-    isError = true;
     msg << "CMake Internal Error (please report a bug)";
     }
   else if(t == cmake::LOG)
@@ -2459,7 +2450,6 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
   else if(t == cmake::DEPRECATION_ERROR)
     {
     msg << "CMake Deprecation Error";
-    isError = true;
     }
   else if (t == cmake::DEPRECATION_WARNING)
     {
@@ -2475,25 +2465,24 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
                                         "CMAKE_SUPPRESS_DEVELOPER_WARNINGS");
       if(suppress && cmSystemTools::IsOn(suppress))
         {
-        return;
+        return false;
         }
       msg << " (dev)";
       }
     }
+  return true;
+}
 
-  // Add the immediate context.
-  backtrace.PrintTitle(msg);
-
-  // Add the message text.
-  {
-  msg << ":\n";
-  cmDocumentationFormatter formatter;
-  formatter.SetIndent("  ");
-  formatter.PrintFormatted(msg, text.c_str());
-  }
+void printMessageText(std::ostream& msg, std::string const& text)
+{
+   msg << ":\n";
+   cmDocumentationFormatter formatter;
+   formatter.SetIndent("  ");
+   formatter.PrintFormatted(msg, text.c_str());
+}
 
-  // Add the rest of the context.
-  backtrace.PrintCallStack(msg);
+void displayMessage(cmake::MessageType t, std::ostringstream& msg)
+{
 
   // Add a note about warning suppression.
   if(t == cmake::AUTHOR_WARNING)
@@ -2522,7 +2511,9 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
 #endif
 
   // Output the message.
-  if(isError)
+  if(t == cmake::FATAL_ERROR
+     || t == cmake::INTERNAL_ERROR
+     || t == cmake::DEPRECATION_ERROR)
     {
     cmSystemTools::SetErrorOccured();
     cmSystemTools::Message(msg.str().c_str(), "Error");
@@ -2534,6 +2525,48 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
 }
 
 //----------------------------------------------------------------------------
+void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
+                         cmListFileBacktrace const& bt)
+{
+  cmListFileBacktrace backtrace = bt;
+  backtrace.MakeRelative();
+
+  std::ostringstream msg;
+  if (!this->PrintMessagePreamble(t, msg))
+    {
+    return;
+    }
+
+  // Add the immediate context.
+  backtrace.PrintTitle(msg);
+
+  printMessageText(msg, text);
+
+  // Add the rest of the context.
+  backtrace.PrintCallStack(msg);
+
+  displayMessage(t, msg);
+}
+
+//----------------------------------------------------------------------------
+void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
+                         cmListFileContext const& lfc)
+{
+  std::ostringstream msg;
+  if (!this->PrintMessagePreamble(t, msg))
+    {
+    return;
+    }
+
+  // Add the immediate context.
+  msg << (lfc.Line ? " at " : " in ") << lfc;
+
+  printMessageText(msg, text);
+
+  displayMessage(t, msg);
+}
+
+//----------------------------------------------------------------------------
 std::vector<std::string> cmake::GetDebugConfigs()
 {
   std::vector<std::string> configs;
diff --git a/Source/cmake.h b/Source/cmake.h
index 0a1ee7d..7f95fb6 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -303,6 +303,9 @@ class cmake
   /** Display a message to the user.  */
   void IssueMessage(cmake::MessageType t, std::string const& text,
         cmListFileBacktrace const& backtrace = cmListFileBacktrace(NULL));
+  void IssueMessage(cmake::MessageType t, std::string const& text,
+        cmListFileContext const& lfc);
+
   ///! run the --build option
   int Build(const std::string& dir,
             const std::string& target,
@@ -399,6 +402,8 @@ private:
 
   // Print a list of valid generators to stderr.
   void PrintGeneratorList();
+
+  bool PrintMessagePreamble(cmake::MessageType t, std::ostream& msg);
 };
 
 #define CMAKE_STANDARD_OPTIONS_TABLE \