Remove ancient trunk folder from svn repository

[synfig.git] / synfig-core / src / synfig / guid.h

diff --git a/synfig-core/src/synfig/guid.h b/synfig-core/src/synfig/guid.h
new file mode 100644 (file)
index 0000000..c822628
--- /dev/null
+++ b/synfig-core/src/synfig/guid.h
@@ -0,0 +1,141 @@
+/* === S Y N F I G ========================================================= */
+/*!    \file guid.h
+**     \brief Template Header
+**
+**     $Id$
+**
+**     \legal
+**     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+**     This package is free software; you can redistribute it and/or
+**     modify it under the terms of the GNU General Public License as
+**     published by the Free Software Foundation; either version 2 of
+**     the License, or (at your option) any later version.
+**
+**     This package is distributed in the hope that it will be useful,
+**     but WITHOUT ANY WARRANTY; without even the implied warranty of
+**     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+**     General Public License for more details.
+**     \endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_GUID_H
+#define __SYNFIG_GUID_H
+
+/* === H E A D E R S ======================================================= */
+
+#include "string.h"
+#include <stdint.h>
+#include <cassert>
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfig {
+
+class GUID
+{
+       union {
+               struct {
+                       unsigned int a;
+                       unsigned int b;
+                       unsigned int c;
+                       unsigned int d;
+               } u_32;
+               struct {
+                       uint64_t a;
+                       uint64_t b;
+               } u_64;
+
+       } data;
+
+public:
+       GUID()
+               { make_unique(); }
+       GUID(const GUID& x):data(x.data)
+               { }
+       GUID(const int i __attribute__ ((unused))){assert(!i); data.u_64.a=0;data.u_64.b=0;}
+
+       GUID(const String& str);
+
+       static GUID zero() { return GUID(0); }
+       static GUID hasher(const String& str);
+       static GUID hasher(int i);
+
+       operator bool()const { return data.u_32.a||data.u_32.b||data.u_32.c||data.u_32.d; }
+
+       uint64_t get_hi()const { return data.u_64.a; }
+       uint64_t get_lo()const { return data.u_64.b; }
+
+       uint64_t get_hi_hi()const { return data.u_32.a; }
+       uint64_t get_hi_lo()const { return data.u_32.b; }
+       uint64_t get_lo_hi()const { return data.u_32.c; }
+       uint64_t get_lo_lo()const { return data.u_32.d; }
+
+       void make_unique();
+       String get_string()const;
+
+       bool operator==(const GUID& rhs)const
+               { return data.u_64.a==rhs.data.u_64.a && data.u_64.b==rhs.data.u_64.b; }
+       bool operator!=(const GUID& rhs)const
+               { return data.u_64.a!=rhs.data.u_64.a || data.u_64.b!=rhs.data.u_64.b; }
+       bool operator<(const GUID& rhs)const
+               { return (data.u_64.a==rhs.data.u_64.a)?(data.u_64.b<rhs.data.u_64.b):(data.u_64.a<rhs.data.u_64.a); }
+       bool operator>(const GUID& rhs)const
+               { return (data.u_64.a==rhs.data.u_64.a)?(data.u_64.b>rhs.data.u_64.b):(data.u_64.a>rhs.data.u_64.a); }
+       bool operator<=(const GUID& rhs)const
+               { return operator<(rhs) || operator==(rhs); }
+       bool operator>=(const GUID& rhs)const
+               { return operator>(rhs) || operator==(rhs); }
+
+       //! Operator '^' (xor)
+       /*! If A ^ B == C, then C ^ B == A and B ^ A == C.
+       **      Also keep in mind that A ^ A == 0 and A ^ B ^ B = A. */
+       GUID& operator^=(const GUID& rhs)
+       {
+               data.u_32.a^=rhs.data.u_32.a;
+               data.u_32.b^=rhs.data.u_32.b;
+               data.u_32.c^=rhs.data.u_32.c;
+               data.u_32.d^=rhs.data.u_32.d;
+               return *this;
+       }
+       GUID operator^(const GUID& rhs)const { return GUID(*this)^=rhs; }
+
+       //! Operator '%' (alt-xor)
+       /*! A % B != B % A. */
+       GUID& operator%=(const GUID& rhs)
+       {
+               data.u_32.a^=rhs.data.u_32.b;
+               data.u_32.b^=rhs.data.u_32.c;
+               data.u_32.c^=rhs.data.u_32.d;
+               data.u_32.d^=rhs.data.u_32.a;
+               return *this;
+       }
+       GUID operator%(const GUID& rhs)const { return GUID(*this)%=rhs; }
+
+};
+
+class GUIDHash
+{
+public:
+       size_t operator()(const GUID& guid)const
+       {
+               return
+                       guid.get_hi_hi()+
+                       guid.get_hi_lo()+
+                       guid.get_lo_hi()+
+                       guid.get_lo_lo();
+       }
+};
+
+};
+
+/* === E N D =============================================================== */
+
+#endif