1 files changed, 96 insertions, 0 deletions
diff --git a/Source/cmConditionEvaluator.h b/Source/cmConditionEvaluator.h
new file mode 100644
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--- /dev/null
+++ b/Source/cmConditionEvaluator.h
@@ -0,0 +1,96 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2014 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmConditionEvaluator_h
+#define cmConditionEvaluator_h
+
+#include "cmCommand.h"
+#include "cmExpandedCommandArgument.h"
+
+class cmConditionEvaluator
+{
+public:
+  typedef std::list<cmExpandedCommandArgument> cmArgumentList;
+
+  cmConditionEvaluator(cmMakefile& makefile);
+
+  // this is a shared function for both If and Else to determine if the
+  // arguments were valid, and if so, was the response true. If there is
+  // an error, the errorString will be set.
+  bool IsTrue(const std::vector<cmExpandedCommandArgument> &args,
+      std::string &errorString,
+      cmake::MessageType &status);
+
+private:
+  // Filter the given variable definition based on policy CMP0054.
+  const char* GetDefinitionIfUnquoted(
+      const cmExpandedCommandArgument& argument) const;
+
+  const char* GetVariableOrString(
+      const cmExpandedCommandArgument& argument) const;
+
+  bool IsKeyword(std::string const& keyword,
+    cmExpandedCommandArgument& argument) const;
+
+  bool GetBooleanValue(
+    cmExpandedCommandArgument& arg) const;
+
+  bool GetBooleanValueOld(
+    cmExpandedCommandArgument const& arg, bool one) const;
+
+  bool GetBooleanValueWithAutoDereference(
+    cmExpandedCommandArgument &newArg,
+    std::string &errorString,
+    cmake::MessageType &status,
+    bool oneArg = false) const;
+
+  void IncrementArguments(
+    cmArgumentList &newArgs,
+    cmArgumentList::iterator &argP1,
+    cmArgumentList::iterator &argP2) const;
+
+  void HandlePredicate(bool value, int &reducible,
+     cmArgumentList::iterator &arg,
+     cmArgumentList &newArgs,
+     cmArgumentList::iterator &argP1,
+     cmArgumentList::iterator &argP2) const;
+
+  void HandleBinaryOp(bool value, int &reducible,
+     cmArgumentList::iterator &arg,
+     cmArgumentList &newArgs,
+     cmArgumentList::iterator &argP1,
+     cmArgumentList::iterator &argP2);
+
+  bool HandleLevel0(cmArgumentList &newArgs,
+      std::string &errorString,
+      cmake::MessageType &status);
+
+  bool HandleLevel1(cmArgumentList &newArgs,
+      std::string &, cmake::MessageType &);
+
+  bool HandleLevel2(cmArgumentList &newArgs,
+      std::string &errorString,
+      cmake::MessageType &status);
+
+  bool HandleLevel3(cmArgumentList &newArgs,
+      std::string &errorString,
+      cmake::MessageType &status);
+
+  bool HandleLevel4(cmArgumentList &newArgs,
+      std::string &errorString,
+      cmake::MessageType &status);
+
+  cmMakefile& Makefile;
+  cmPolicies::PolicyStatus Policy12Status;
+  cmPolicies::PolicyStatus Policy54Status;
+};
+
+#endif