X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fstrings%2Flexicalcast.h;h=0c5f0a34caa38844be7265c8366e9be34ea1ea47;hb=99b9121e2158603372c7313400283b622e6754d8;hp=2ed0621291858c0d0f4d40fb37036fd5decc5700;hpb=ea901644ac2d36256d1f38c7a3adaaee787fe1b9;p=libs%2Fcore.git

diff --git a/source/strings/lexicalcast.h b/source/strings/lexicalcast.h
index 2ed0621..0c5f0a3 100644
--- a/source/strings/lexicalcast.h
+++ b/source/strings/lexicalcast.h
@@ -16,7 +16,7 @@ class lexical_error: public std::runtime_error
 {
 public:
 	lexical_error(const std::string &w): runtime_error(w) { }
-	virtual ~lexical_error() throw() { }
+	virtual ~lexical_error() throw() = default;
 };
 
 
@@ -27,7 +27,7 @@ class format_mismatch: public lexical_error
 {
 public:
 	format_mismatch(const std::string &w): lexical_error(w) { }
-	virtual ~format_mismatch() throw() { }
+	virtual ~format_mismatch() throw() = default;
 };
 
 
@@ -38,11 +38,11 @@ class LexicalConverter
 {
 private:
 	Fmt fmt;
-	bool filled;
+	bool filled = false;
 	std::string buf;
 
 public:
-	LexicalConverter(const Fmt &f): fmt(f), filled(false) { }
+	LexicalConverter(const Fmt &f): fmt(f) { }
 	LexicalConverter(const std::string &s, const Fmt &f): fmt(f), filled(true), buf(s) { }
 
 	const Fmt &get_fmt() const { return fmt; }
@@ -93,53 +93,42 @@ void operator>>(const LexicalConverter &, std::string &);
 
 // Generic operators using stringstream
 
-template<typename T>
-struct HasFormattedOutput: Sfinae
+struct CheckFormattedOutput: Sfinae
 {
 	static std::ostream &s;
-	static T &v;
-
-	/* The expression must depend on the template parameter, or the compiler
-	will give an error. */
-	template<typename U>
-	static Yes f(int (*)[sizeof(s<<HasFormattedOutput<U>::v)]);
-	template<typename U>
-	static No f(...);
-
-	enum { value = Evaluate<sizeof(f<T>(0))>::value };
+	template<typename T>
+	static Yes f(int (*)[sizeof(s<<reinterpret_cast<const T &>(s))]);
+	using Sfinae::f;
 };
 
-template<typename T>
-struct HasFormattedInput: Sfinae
+struct CheckFormattedInput: Sfinae
 {
 	static std::istream &s;
-	static T &v;
-
-	template<typename U>
-	static Yes f(int (*)[sizeof(s>>HasFormattedOutput<U>::v)]);
-	template<typename U>
-	static No f(...);
-
-	enum { value = Evaluate<sizeof(f<T>(0))>::value };
+	template<typename T>
+	static Yes f(int (*)[sizeof(s>>reinterpret_cast<T &>(s))]);
+	using Sfinae::f;
 };
 
+template<typename T> struct HasFormattedOutput: Sfinae::Evaluate<CheckFormattedOutput, T> { };
+template<typename T> struct HasFormattedInput: Sfinae::Evaluate<CheckFormattedInput, T> { };
+
 
 template<typename T>
-typename EnableIf<HasFormattedOutput<T>::value, void>::Yes
+typename std::enable_if<HasFormattedOutput<T>::value>::type
 operator<<(LexicalConverter &c, const T &v)
 {
 	std::ostringstream ss;
-	ss<<c.get_fmt()<<v;
+	ss << c.get_fmt() << v;
 	c.result(ss.str());
 }
 
 template<typename T>
-typename EnableIf<HasFormattedInput<T>::value, void>::Yes
+typename std::enable_if<HasFormattedInput<T>::value>::type
 operator>>(const LexicalConverter &c, T &v)
 {
 	std::istringstream ss(c.get());
 	ss.setf(std::ios_base::fmtflags(0), std::ios_base::skipws);
-	ss>>v;
+	ss >> v;
 	if(ss.fail() || !ss.eof())
 		throw lexical_error("conversion failure");
 }
@@ -157,7 +146,7 @@ struct LexicalCast<T, std::string>
 	{
 		LexicalConverter conv(s, f);
 		T result;
-		conv>>result;
+		conv >> result;
 		return result;
 	}
 };
@@ -168,7 +157,7 @@ struct LexicalCast<std::string, F>
 	static std::string cast(const F &v, const Fmt &f = Fmt())
 	{
 		LexicalConverter conv(f);
-		conv<<v;
+		conv << v;
 		return conv.get();
 	}
 };
@@ -179,7 +168,7 @@ struct LexicalCast<std::string, std::string>
 	static std::string cast(const std::string &v, const Fmt &f = Fmt())
 	{
 		LexicalConverter conv(f);
-		conv<<v;
+		conv << v;
 		return conv.get();
 	}
 };