If: Extract cmConditionEvaluator from if() implementation

1 files changed, 90 insertions, 0 deletions

diff --git a/Source/cmConditionEvaluator.h b/Source/cmConditionEvaluator.h
new file mode 100644
index 0000000..9076988
--- /dev/null
+++ b/Source/cmConditionEvaluator.h
@@ -0,0 +1,90 @@
+/*============================================================================
+  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"
+
+class cmConditionEvaluator
+{
+public:
+  typedef std::list<std::string> 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<std::string> &args,
+      std::string &errorString,
+      cmake::MessageType &status);
+
+private:
+  const char* GetVariableOrString(
+      const std::string& argument) const;
+
+  bool IsKeyword(std::string const& keyword,
+    std::string& argument) const;
+
+  bool GetBooleanValue(
+    std::string& arg) const;
+
+  bool GetBooleanValueOld(
+    std::string const& arg, bool one) const;
+
+  bool GetBooleanValueWithAutoDereference(
+    std::string &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;
+};
+
+#endif