Split retrace swizlling helpers.

[apitrace] / retrace / retrace_swizzle.hpp

diff --git a/retrace/retrace_swizzle.hpp b/retrace/retrace_swizzle.hpp
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+/**************************************************************************
+ *
+ * Copyright 2011-2012 Jose Fonseca
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef _RETRACE_SWIZZLE_HPP_
+#define _RETRACE_SWIZZLE_HPP_
+
+
+#include <map>
+
+#include "trace_model.hpp"
+
+
+namespace retrace {
+
+
+/**
+ * Handle map.
+ *
+ * It is just like a regular std::map<T, T> container, but lookups of missing
+ * keys return the key instead of default constructor.
+ *
+ * This is necessary for several GL named objects, where one can either request
+ * the implementation to generate an unique name, or pick a value never used
+ * before.
+ *
+ * XXX: In some cases, instead of returning the key, it would make more sense
+ * to return an unused data value (e.g., container count).
+ */
+template <class T>
+class map
+{
+private:
+    typedef std::map<T, T> base_type;
+    base_type base;
+
+public:
+
+    T & operator[] (const T &key) {
+        typename base_type::iterator it;
+        it = base.find(key);
+        if (it == base.end()) {
+            return (base[key] = key);
+        }
+        return it->second;
+    }
+    
+    const T & operator[] (const T &key) const {
+        typename base_type::const_iterator it;
+        it = base.find(key);
+        if (it == base.end()) {
+            return (base[key] = key);
+        }
+        return it->second;
+    }
+};
+
+
+void
+addRegion(unsigned long long address, void *buffer, unsigned long long size);
+
+void
+delRegionByPointer(void *ptr);
+
+void *
+toPointer(trace::Value &value, bool bind = false);
+
+
+} /* namespace retrace */
+
+#endif /* _RETRACE_SWIZZLE_HPP_ */