From fcc410de44e59fa4f6145292dc1f13a4498bd8b1 Mon Sep 17 00:00:00 2001
From: Ken Martin <ken.martin@kitware.com>
Date: Wed, 17 Jul 2002 10:48:39 -0400
Subject: fixed if statements inside a foreach

---
 Source/cmForEachCommand.cxx               |  8 +++++++-
 Source/cmForEachCommand.h                 |  3 ++-
 Source/cmMakefile.cxx                     | 14 ++++++++------
 Tests/Complex/CMakeLists.txt              |  6 +++---
 Tests/ComplexOneConfig/CMakeLists.txt     |  6 +++---
 Tests/ComplexRelativePaths/CMakeLists.txt |  6 +++---
 6 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/Source/cmForEachCommand.cxx b/Source/cmForEachCommand.cxx
index e4cca41..c95c558 100644
--- a/Source/cmForEachCommand.cxx
+++ b/Source/cmForEachCommand.cxx
@@ -21,10 +21,16 @@ bool cmForEachFunctionBlocker::
 IsFunctionBlocked(const char *name, const std::vector<std::string> &args, 
                   cmMakefile &mf) 
 {
+  // prevent recusion and don't let this blobker blobk its own commands
+  if (m_Executing)
+    {
+    return false;
+    }
   
   // at end of for each execute recorded commands
   if (!strcmp(name,"ENDFOREACH") && args[0] == m_Args[0])
     {
+    m_Executing = true;
     std::string variable = "${";
     variable += m_Args[0];
     variable += "}"; 
@@ -90,7 +96,7 @@ bool cmForEachCommand::InitialPass(std::vector<std::string> const& argsIn)
   std::vector<std::string> args;
   cmSystemTools::ExpandListArguments(argsIn, args);
 
-  if(args.size() < 2 )
+  if(args.size() < 1)
     {
     this->SetError("called with incorrect number of arguments");
     return false;
diff --git a/Source/cmForEachCommand.h b/Source/cmForEachCommand.h
index 064e30b..910f3d5 100644
--- a/Source/cmForEachCommand.h
+++ b/Source/cmForEachCommand.h
@@ -29,7 +29,7 @@
 class cmForEachFunctionBlocker : public cmFunctionBlocker
 {
 public:
-  cmForEachFunctionBlocker() {}
+  cmForEachFunctionBlocker() {m_Executing = false;}
   virtual ~cmForEachFunctionBlocker() {}
   virtual bool IsFunctionBlocked(const char *name, 
                                  const std::vector<std::string> &args, 
@@ -44,6 +44,7 @@ public:
   std::vector<std::string> m_Args;
   std::vector<std::string> m_Commands;
   std::vector<std::vector<std::string> > m_CommandArguments;
+  bool m_Executing;
 };
 
 /** \class cmForEachCommand
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 496704a..9dbf31d 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -193,6 +193,12 @@ bool cmMakefile::CommandExists(const char* name) const
 void cmMakefile::ExecuteCommand(std::string &name,
                                 std::vector<std::string> const& arguments)
 {
+  // quick return if blocked
+  if(this->IsFunctionBlocked(name.c_str(), arguments))
+    {
+    return;
+    }
+  // execute the command
   RegisteredCommandsMap::iterator pos = m_Commands.find(name);
   if(pos != m_Commands.end())
     {
@@ -342,12 +348,8 @@ bool cmMakefile::ReadListFile(const char* filename, const char* external)
   for(size_t i =0; i < numberFunctions; ++i)
     {
     cmListFileFunction& curFunction = lf->m_Functions[i];
-    if(!this->IsFunctionBlocked(curFunction.m_Name.c_str(),
-                                curFunction.m_Arguments))
-      {
-      this->ExecuteCommand(curFunction.m_Name,
-                           curFunction.m_Arguments);
-      }
+    this->ExecuteCommand(curFunction.m_Name,
+                         curFunction.m_Arguments);
     }
 
   // send scope ended to and funciton blockers
diff --git a/Tests/Complex/CMakeLists.txt b/Tests/Complex/CMakeLists.txt
index 2d6de20..068b47e 100644
--- a/Tests/Complex/CMakeLists.txt
+++ b/Tests/Complex/CMakeLists.txt
@@ -164,13 +164,13 @@ REMOVE(REMOVE_STRING ${removeVar1} f)
 # Test an IF inside a FOREACH.
 #
 FOREACH(x "a")
-  IF(1)
+  IF(${x} MATCHES "a")
     # Should always execute.
     SET(IF_INSIDE_FOREACH_THEN_EXECUTED 1)
-  ELSE(1)
+  ELSE(${x} MATCHES "a")
     # Should never execute.
     SET(IF_INSIDE_FOREACH_ELSE_EXECUTED 1)
-  ENDIF(1)
+  ENDIF(${x} MATCHES "a")
 ENDFOREACH(x)
 
 
diff --git a/Tests/ComplexOneConfig/CMakeLists.txt b/Tests/ComplexOneConfig/CMakeLists.txt
index 2d6de20..068b47e 100644
--- a/Tests/ComplexOneConfig/CMakeLists.txt
+++ b/Tests/ComplexOneConfig/CMakeLists.txt
@@ -164,13 +164,13 @@ REMOVE(REMOVE_STRING ${removeVar1} f)
 # Test an IF inside a FOREACH.
 #
 FOREACH(x "a")
-  IF(1)
+  IF(${x} MATCHES "a")
     # Should always execute.
     SET(IF_INSIDE_FOREACH_THEN_EXECUTED 1)
-  ELSE(1)
+  ELSE(${x} MATCHES "a")
     # Should never execute.
     SET(IF_INSIDE_FOREACH_ELSE_EXECUTED 1)
-  ENDIF(1)
+  ENDIF(${x} MATCHES "a")
 ENDFOREACH(x)
 
 
diff --git a/Tests/ComplexRelativePaths/CMakeLists.txt b/Tests/ComplexRelativePaths/CMakeLists.txt
index 2d6de20..068b47e 100644
--- a/Tests/ComplexRelativePaths/CMakeLists.txt
+++ b/Tests/ComplexRelativePaths/CMakeLists.txt
@@ -164,13 +164,13 @@ REMOVE(REMOVE_STRING ${removeVar1} f)
 # Test an IF inside a FOREACH.
 #
 FOREACH(x "a")
-  IF(1)
+  IF(${x} MATCHES "a")
     # Should always execute.
     SET(IF_INSIDE_FOREACH_THEN_EXECUTED 1)
-  ELSE(1)
+  ELSE(${x} MATCHES "a")
     # Should never execute.
     SET(IF_INSIDE_FOREACH_ELSE_EXECUTED 1)
-  ENDIF(1)
+  ENDIF(${x} MATCHES "a")
 ENDFOREACH(x)
 
 
-- 
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