Security-57031.1.35.tar.gz

[apple/security.git] / libsecurity_utilities / lib / typedvalue.h

diff --git a/libsecurity_utilities/lib/typedvalue.h b/libsecurity_utilities/lib/typedvalue.h
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--- a/libsecurity_utilities/lib/typedvalue.h
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@@ -1,86 +0,0 @@
-/*
- * Copyright (c) 2000-2001,2003-2004 Apple Computer, Inc. All Rights Reserved.
- * 
- * @APPLE_LICENSE_HEADER_START@
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-
-
-//
-// typedvalue - type-safe reference transmission of arbitrary types.
-//
-// This slight-of-hand pair of classes allows arbitrary types to be passed through an API
-// without losing C++ type safety. Specifically, the type is encapsulated in C++ polymorphism,
-// and can be resolved through the C++ typeinfo/dynamic_cast system in a fairly
-// convenient way. This is intended to replace passing (void *) arguments around.
-// It is obviously not meant to replace proper class hierarchies in APIs.
-//
-#ifndef _H_TYPEDVALUE
-#define _H_TYPEDVALUE
-
-#include <security_utilities/utilities.h>
-#include <security_utilities/debugging.h>
-
-
-namespace Security {
-
-
-//
-// A GenericValue can represent any (one) type. Note the template assignment
-// that works *only* for the type it actually represents. Note particularly that
-// no automatic conversions are made (other than to subclass).
-//
-class GenericValue {
-public:
-    virtual ~GenericValue();
-    
-    template <class V>
-    void operator = (const V &value);
-};
-
-
-//
-// A TypedValue is a particular typed instance of a GenericValue
-//
-template <class Value>
-class TypedValue : public GenericValue {
-public:
-    TypedValue() : mValue() { }
-    TypedValue(const Value &v) : mValue(v) { }
-    Value &value()                                     { return mValue; }
-    operator Value &()                         { return mValue; }
-    void operator = (const Value &value) { mValue = value; }
-    
-private:
-    Value mValue;
-};
-
-
-//
-// The polymorphic assignment access method
-//
-template <class Value>
-void GenericValue::operator = (const Value &value)
-{ safer_cast<TypedValue<Value> &>(*this) = value; }
-
-
-}      // end namespace Security
-
-
-#endif //_H_TYPEDVALUE