Merge branch 'develop' into feature/cubiquity-version

library/PolyVoxCore/include/PolyVoxCore/Impl/Logging.h

@@ -35,12 +35,54 @@ freely, subject to the following restrictions:
  * PolyVox provides basic logging facilities which can be redirected by your application.
  */
 
-#define LOG_DECLARATION(name) \
-	std::ostream& log(name)(void); \
-	void set(name)Stream(std::ostream& nameStream);
-
 namespace PolyVox
 {
+	class Logger
+	{
+	public:
+		// Passing zero to the null stream constructor guarentees it will discard all input. See
+		// here http://stackoverflow.com/a/8244052 and here http://stackoverflow.com/a/6240980
+		Logger() : m_NullStream(0) {};
+		virtual ~Logger() {};
+
+		virtual std::ostream& getTraceStream() = 0;
+		virtual std::ostream& getDebugStream() = 0;
+		virtual std::ostream& getInfoStream() = 0;
+		virtual std::ostream& getWarningStream() = 0;
+		virtual std::ostream& getErrorStream() = 0;
+		virtual std::ostream& getFatalStream() = 0;
+
+	protected:
+		std::ostream& getNullStream()
+		{
+			return m_NullStream;
+		}
+
+	private:
+		std::ostream m_NullStream;
+	};
+
+	class DefaultLogger : public Logger
+	{
+	public:
+		DefaultLogger() : Logger() {}
+		virtual ~DefaultLogger() {}
+
+		std::ostream& getTraceStream() { return getNullStream(); }
+		std::ostream& getDebugStream() { return getNullStream(); }
+		std::ostream& getInfoStream() { return (std::cout); }
+		std::ostream& getWarningStream() { return (std::cerr); }
+		std::ostream& getErrorStream() { return (std::cerr); }
+		std::ostream& getFatalStream() { return (std::cerr); }
+	};
+
+	namespace Impl
+	{
+		Logger*& getLoggerInstance();
+	}
+
+	void setLogger(Logger* pLogger);
+
 	namespace Impl
 	{
 		std::ostream*& getTraceStreamInstance();
@@ -159,7 +201,7 @@ namespace PolyVox
 		do \
 		{ \
 			/* Appending the 'std::endl' forces the stream to be flushed. */ \
-			*(PolyVox::Impl::getTraceStreamInstance()) << message << std::endl; \
+			(PolyVox::Impl::getLoggerInstance()->getTraceStream()) << message << std::endl; \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
 
@@ -174,7 +216,7 @@ namespace PolyVox
 			if ((condition)) \
 			{ \
 				/* Appending the 'std::endl' forces the stream to be flushed. */ \
-				*(PolyVox::Impl::getTraceStreamInstance()) << message << std::endl; \
+				(PolyVox::Impl::getLoggerInstance()->getTraceStream()) << message << std::endl; \
 			} \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
@@ -212,7 +254,7 @@ namespace PolyVox
 		do \
 		{ \
 			/* Appending the 'std::endl' forces the stream to be flushed. */ \
-			*(PolyVox::Impl::getDebugStreamInstance()) << message << std::endl; \
+			(PolyVox::Impl::getLoggerInstance()->getDebugStream()) << message << std::endl; \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
 
@@ -227,7 +269,7 @@ namespace PolyVox
 			if ((condition)) \
 			{ \
 				/* Appending the 'std::endl' forces the stream to be flushed. */ \
-				*(PolyVox::Impl::getDebugStreamInstance()) << message << std::endl; \
+				(PolyVox::Impl::getLoggerInstance()->getDebugStream()) << message << std::endl; \
 			} \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
@@ -265,7 +307,7 @@ namespace PolyVox
 		do \
 		{ \
 			/* Appending the 'std::endl' forces the stream to be flushed. */ \
-			*(PolyVox::Impl::getInfoStreamInstance()) << message << std::endl; \
+			(PolyVox::Impl::getLoggerInstance()->getInfoStream()) << message << std::endl; \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
 
@@ -280,7 +322,7 @@ namespace PolyVox
 			if ((condition)) \
 			{ \
 				/* Appending the 'std::endl' forces the stream to be flushed. */ \
-				*(PolyVox::Impl::getInfoStreamInstance()) << message << std::endl; \
+				(PolyVox::Impl::getLoggerInstance()->getInfoStream()) << message << std::endl; \
 			} \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
@@ -318,7 +360,7 @@ namespace PolyVox
 		do \
 		{ \
 			/* Appending the 'std::endl' forces the stream to be flushed. */ \
-			*(PolyVox::Impl::getWarningStreamInstance()) << message << std::endl; \
+			(PolyVox::Impl::getLoggerInstance()->getWarningStream()) << message << std::endl; \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
 
@@ -333,7 +375,7 @@ namespace PolyVox
 			if ((condition)) \
 			{ \
 				/* Appending the 'std::endl' forces the stream to be flushed. */ \
-				*(PolyVox::Impl::getWarningStreamInstance()) << message << std::endl; \
+				(PolyVox::Impl::getLoggerInstance()->getWarningStream()) << message << std::endl; \
 			} \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
@@ -371,7 +413,7 @@ namespace PolyVox
 		do \
 		{ \
 			/* Appending the 'std::endl' forces the stream to be flushed. */ \
-			*(PolyVox::Impl::getErrorStreamInstance()) << message << std::endl; \
+			(PolyVox::Impl::getLoggerInstance()->getErrorStream()) << message << std::endl; \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
 
@@ -386,7 +428,7 @@ namespace PolyVox
 			if ((condition)) \
 			{ \
 				/* Appending the 'std::endl' forces the stream to be flushed. */ \
-				*(PolyVox::Impl::getErrorStreamInstance()) << message << std::endl; \
+				(PolyVox::Impl::getLoggerInstance()->getErrorStream()) << message << std::endl; \
 			} \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
@@ -424,7 +466,7 @@ namespace PolyVox
 		do \
 		{ \
 			/* Appending the 'std::endl' forces the stream to be flushed. */ \
-			*(PolyVox::Impl::getFatalStreamInstance()) << message << std::endl; \
+			(PolyVox::Impl::getLoggerInstance()->getFatalStream()) << message << std::endl; \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP
 
@@ -439,7 +481,7 @@ namespace PolyVox
 			if ((condition)) \
 			{ \
 				/* Appending the 'std::endl' forces the stream to be flushed. */ \
-				*(PolyVox::Impl::getFatalStreamInstance()) << message << std::endl; \
+				(PolyVox::Impl::getLoggerInstance()->getFatalStream()) << message << std::endl; \
 			} \
 		} while(0) \
 		POLYVOX_MSC_WARNING_POP