Added string classes

2017-06-29 11:18:14 +01:00
parent cb0a5194af
commit 78e7994435
13 changed files with 908 additions and 0 deletions
--- a/include/internal/catch_stringdata.h
+++ b/include/internal/catch_stringdata.h
@@ -0,0 +1,52 @@
+/*
+ *  Copyright 2016 Two Blue Cubes Ltd. All rights reserved.
+ *
+ *  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 CATCH_STRINGDATA_H_INCLUDED
+#define CATCH_STRINGDATA_H_INCLUDED
+
+#include <atomic>
+
+namespace Catch {
+    
+    class StringRef;
+
+    class StringData {
+        mutable std::atomic<unsigned int> m_refs;
+    public:
+        unsigned int size;
+        union {
+            char chars[1];
+        };
+
+        auto isUniquelyOwned() const noexcept -> bool {
+            return m_refs == 1;
+        }
+        static auto getEmpty() -> StringData*;
+        static auto create( StringRef const& stringRef ) -> StringData*;
+        static auto create( StringRef const& stringRef, unsigned long capacity ) -> StringData*;
+
+        void addRef() const noexcept {
+            if( m_refs > 0 )
+                m_refs++;
+        }
+        void release() const noexcept {
+            unsigned int refs = m_refs;
+            if( refs > 1 )
+                m_refs--;
+            else if( refs == 1 )
+                delete[] reinterpret_cast<char const*>( this );
+        }
+    private:
+        StringData( unsigned int initialRef = 1 );
+        StringData( StringRef const& stringRef, unsigned long capacity );
+        
+        StringData( StringData const& ) = delete;
+        StringData& operator=( StringData const& ) = delete;
+    };
+
+} // namespace Catch
+
+#endif // CATCH_STRINGDATA_H_INCLUDED