diff options
| author | Bardur Arantsson <bardur@scientician.net> | 2015-02-23 09:11:55 +0100 |
|---|---|---|
| committer | Bardur Arantsson <bardur@scientician.net> | 2015-02-23 09:11:55 +0100 |
| commit | 062cd07342edc2b003555e90dd2cee0514b9f64a (patch) | |
| tree | 3c73893dae8a9380c9f24e9c5822c5ec6bf671d5 /vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/stringize.h | |
| parent | ffee481435ac0afe3f9a5a3eb07b2f2a46467089 (diff) | |
Add BanditCpp 1.1.4 test harness
Diffstat (limited to 'vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/stringize.h')
| -rw-r--r-- | vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/stringize.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/stringize.h b/vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/stringize.h new file mode 100644 index 00000000..ba2a0175 --- /dev/null +++ b/vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/stringize.h @@ -0,0 +1,90 @@ +
+// Copyright Joakim Karlsson & Kim Gräsman 2010-2012.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef IGLOO_STRINGIZE_H
+#define IGLOO_STRINGIZE_H
+
+namespace snowhouse {
+ namespace detail {
+
+ // This type soaks up any implicit conversions and makes the following operator<<
+ // less preferred than any other such operator found via ADL.
+ struct any
+ {
+ // Conversion constructor for any type.
+ template <class T>
+ any(T const&);
+ };
+
+ // A tag type returned by operator<< for the any struct in this namespace
+ // when T does not support <<.
+ struct tag {};
+
+ // Fallback operator<< for types T that don't support <<.
+ tag operator<<(std::ostream&, any const&);
+
+ // Two overloads to distinguish whether T supports a certain operator expression.
+ // The first overload returns a reference to a two-element character array and is chosen if
+ // T does not support the expression, such as <<, whereas the second overload returns a char
+ // directly and is chosen if T supports the expression. So using sizeof(check(<expression>))
+ // returns 2 for the first overload and 1 for the second overload.
+ typedef char yes;
+ typedef char (&no)[2];
+
+ no check(tag);
+
+ template <class T>
+ yes check(T const&);
+
+ template <class T>
+ struct is_output_streamable
+ {
+ static const T& x;
+ static const bool value = sizeof(check(std::cout << x)) == sizeof(yes);
+ };
+
+ template<typename T, bool type_is_streamable>
+ struct DefaultStringizer
+ {
+ static std::string ToString(const T& value)
+ {
+ std::ostringstream buf;
+ buf << value;
+ return buf.str();
+ }
+ };
+
+ template<typename T>
+ struct DefaultStringizer<T, false>
+ {
+ static std::string ToString(const T&)
+ {
+ return "[unsupported type]";
+ }
+ };
+ }
+
+ template<typename T>
+ struct Stringizer;
+
+ template<typename T>
+ std::string Stringize(const T& value)
+ {
+ return Stringizer<T>::ToString(value);
+ }
+
+ // NOTE: Specialize snowhouse::Stringizer to customize assertion messages
+ template<typename T>
+ struct Stringizer
+ {
+ static std::string ToString(const T& value)
+ {
+ return detail::DefaultStringizer< T, detail::is_output_streamable<T>::value >::ToString(value);
+ }
+ };
+}
+
+#endif
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