Refactored emitter operator << overloads to not template them, so it's easier to overload for pointer types

include/emitter.h

@@ -9,6 +9,7 @@
 #include "null.h"
 #include <memory>
 #include <string>
+#include <sstream>
 
 namespace YAML
 {
@@ -45,29 +46,23 @@ namespace YAML
 		
 		// overloads of write
 		Emitter& Write(const std::string& str);
-		Emitter& Write(const char *str);
-		Emitter& Write(int value) { return WriteIntegralType(value); }
-		Emitter& Write(unsigned int value) { return WriteIntegralType(value); }
-		Emitter& Write(short value) { return WriteIntegralType(value); }
-		Emitter& Write(unsigned short value) { return WriteIntegralType(value); }
-		Emitter& Write(long value) { return WriteIntegralType(value); }
-		Emitter& Write(unsigned long value) { return WriteIntegralType(value); }
 		Emitter& Write(bool b);
-		Emitter& Write(float f);
-		Emitter& Write(double d);
 		Emitter& Write(const _Alias& alias);
 		Emitter& Write(const _Anchor& anchor);
 		Emitter& Write(const _Tag& tag);
 		Emitter& Write(const _Comment& comment);
 		Emitter& Write(const _Null& null);
 		
+		template <typename T>
+		Emitter& WriteIntegralType(T value);
+		
+		template <typename T>
+		Emitter& WriteStreamable(T value);
+
 	private:
 		void PreWriteIntegralType(std::stringstream& str);
 		void PostWriteIntegralType(const std::stringstream& str);
 	
-		template <typename T>
-		Emitter& WriteIntegralType(T value);
-
 	private:
 		enum ATOMIC_TYPE { AT_SCALAR, AT_SEQ, AT_BLOCK_SEQ, AT_FLOW_SEQ, AT_MAP, AT_BLOCK_MAP, AT_FLOW_MAP };
 		
@@ -100,19 +95,49 @@ namespace YAML
 		PostWriteIntegralType(str);
 		return *this;
 	}
+
+	template <typename T>
+	inline Emitter& Emitter::WriteStreamable(T value)
+	{
+		if(!good())
+			return *this;
+		
+		PreAtomicWrite();
+		EmitSeparationIfNecessary();
+		
+		std::stringstream str;
+		str << value;
+		m_stream << str.str();
+		
+		PostAtomicWrite();
+		return *this;
+	}
 	
 	// overloads of insertion
-	template <typename T>
+	inline Emitter& operator << (Emitter& emitter, const std::string& v) { return emitter.Write(v); }
-	inline Emitter& operator << (Emitter& emitter, T v) {
+	inline Emitter& operator << (Emitter& emitter, bool v) { return emitter.Write(v); }
-		return emitter.Write(v);
+	inline Emitter& operator << (Emitter& emitter, const _Alias& v) { return emitter.Write(v); }
-	}
+	inline Emitter& operator << (Emitter& emitter, const _Anchor& v) { return emitter.Write(v); }
+	inline Emitter& operator << (Emitter& emitter, const _Tag& v) { return emitter.Write(v); }
+	inline Emitter& operator << (Emitter& emitter, const _Comment& v) { return emitter.Write(v); }
+	inline Emitter& operator << (Emitter& emitter, const _Null& v) { return emitter.Write(v); }
+
+	inline Emitter& operator << (Emitter& emitter, const char *v) { return emitter.Write(std::string(v)); }
+
+	inline Emitter& operator << (Emitter& emitter, int v) { return emitter.WriteIntegralType(v); }
+	inline Emitter& operator << (Emitter& emitter, unsigned int v) { return emitter.WriteIntegralType(v); }
+	inline Emitter& operator << (Emitter& emitter, short v) { return emitter.WriteIntegralType(v); }
+	inline Emitter& operator << (Emitter& emitter, unsigned short v) { return emitter.WriteIntegralType(v); }
+	inline Emitter& operator << (Emitter& emitter, long v) { return emitter.WriteIntegralType(v); }
+	inline Emitter& operator << (Emitter& emitter, unsigned long v) { return emitter.WriteIntegralType(v); }
+
+	inline Emitter& operator << (Emitter& emitter, float v) { return emitter.WriteStreamable(v); }
+	inline Emitter& operator << (Emitter& emitter, double v) { return emitter.WriteStreamable(v); }
 
-	template <>
 	inline Emitter& operator << (Emitter& emitter, EMITTER_MANIP value) {
 		return emitter.SetLocalValue(value);
 	}
 	
-	template <>
 	inline Emitter& operator << (Emitter& emitter, _Indent indent) {
 		return emitter.SetLocalIndent(indent);
 	}

src/emitter.cpp

@@ -549,14 +549,6 @@ namespace YAML
 		return *this;
 	}
 	
-	Emitter& Emitter::Write(const char *str)
-	{
-		if(!good())
-			return *this;
-		
-		return Write(std::string(str));
-	}
-
 	void Emitter::PreWriteIntegralType(std::stringstream& str)
 	{
 		PreAtomicWrite();
@@ -623,38 +615,6 @@ namespace YAML
 		return *this;
 	}
 
-	Emitter& Emitter::Write(float f)
-	{
-		if(!good())
-			return *this;
-		
-		PreAtomicWrite();
-		EmitSeparationIfNecessary();
-		
-		std::stringstream str;
-		str << f;
-		m_stream << str.str();
-		
-		PostAtomicWrite();
-		return *this;		
-	}
-	
-	Emitter& Emitter::Write(double d)
-	{
-		if(!good())
-			return *this;
-		
-		PreAtomicWrite();
-		EmitSeparationIfNecessary();
-		
-		std::stringstream str;
-		str << d;
-		m_stream << str.str();
-		
-		PostAtomicWrite();
-		return *this;		
-	}
-
 	Emitter& Emitter::Write(const _Alias& alias)
 	{
 		if(!good())

test/emittertests.cpp

@@ -558,6 +558,74 @@ namespace Test
 			desiredOutput = "--- \"\x24 \xC2\xA2 \xE2\x82\xAC \xF0\xA4\xAD\xA2\"";
 		}
 		
+		struct Foo {
+			Foo(): x(0) {}
+			Foo(int x_, const std::string& bar_): x(x_), bar(bar_) {}
+			
+			int x;
+			std::string bar;
+		};
+		
+		YAML::Emitter& operator << (YAML::Emitter& out, const Foo& foo) {
+			out << YAML::BeginMap;
+			out << YAML::Key << "x" << YAML::Value << foo.x;
+			out << YAML::Key << "bar" << YAML::Value << foo.bar;
+			out << YAML::EndMap;
+			return out;
+		}
+		
+		void UserType(YAML::Emitter& out, std::string& desiredOutput)
+		{
+			out << YAML::BeginSeq;
+			out << Foo(5, "hello");
+			out << Foo(3, "goodbye");
+			out << YAML::EndSeq;
+			
+			desiredOutput = "---\n-\n  x: 5\n  bar: hello\n-\n  x: 3\n  bar: goodbye";
+		}
+		
+		void UserTypeInContainer(YAML::Emitter& out, std::string& desiredOutput)
+		{
+			std::vector<Foo> fv;
+			fv.push_back(Foo(5, "hello"));
+			fv.push_back(Foo(3, "goodbye"));
+			out << fv;
+			
+			desiredOutput = "---\n-\n  x: 5\n  bar: hello\n-\n  x: 3\n  bar: goodbye";
+		}
+		
+		template <typename T>
+		YAML::Emitter& operator << (YAML::Emitter& out, const T *v) {
+			if(v)
+				out << *v;
+			else
+				out << YAML::Null;
+			return out;
+		}
+		
+		void PointerToInt(YAML::Emitter& out, std::string& desiredOutput)
+		{
+			int foo = 5;
+			int *bar = &foo;
+			int *baz = 0;
+			out << YAML::BeginSeq;
+			out << bar << baz;
+			out << YAML::EndSeq;
+			
+			desiredOutput = "---\n- 5\n- ~";
+		}
+
+		void PointerToUserType(YAML::Emitter& out, std::string& desiredOutput)
+		{
+			Foo foo(5, "hello");
+			Foo *bar = &foo;
+			Foo *baz = 0;
+			out << YAML::BeginSeq;
+			out << bar << baz;
+			out << YAML::EndSeq;
+			
+			desiredOutput = "---\n-\n  x: 5\n  bar: hello\n- ~";
+		}
 
 		////////////////////////////////////////////////////////////////////////////////////////////////////////
 		// incorrect emitting
@@ -733,6 +801,10 @@ namespace Test
 		RunEmitterTest(&Emitter::EscapedUnicode, "escaped unicode", passed, total);
 		RunEmitterTest(&Emitter::Unicode, "unicode", passed, total);
 		RunEmitterTest(&Emitter::DoubleQuotedUnicode, "double quoted unicode", passed, total);
+		RunEmitterTest(&Emitter::UserType, "user type", passed, total);
+		RunEmitterTest(&Emitter::UserTypeInContainer, "user type in container", passed, total);
+		RunEmitterTest(&Emitter::PointerToInt, "pointer to int", passed, total);
+		RunEmitterTest(&Emitter::PointerToUserType, "pointer to user type", passed, total);
 		
 		RunEmitterErrorTest(&Emitter::ExtraEndSeq, "extra EndSeq", passed, total);
 		RunEmitterErrorTest(&Emitter::ExtraEndMap, "extra EndMap", passed, total);