84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
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// MethodHelp.h -- Helpers for class methods
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// (c) Copyright Schlumberger Technology Corp., unpublished work, created
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// 1999. This computer program includes Confidential, Proprietary
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// Information and is a Trade Secret of Schlumberger Technology Corp. All
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// use, disclosure, and/or reproduction is prohibited unless authorized
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// in writing. All Rights Reserved.
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#if !defined(SLBCCI_METHODHELP_H)
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#define SLBCCI_METHODHELP_H
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// Note: This file should only be included by the CCI, not directly
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// by the client.
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namespace cci
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{
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// Similar to std:unary_function, AccessorMethod and ModifierMethod
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// help build templates dealing with method accessors and modifiers.
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template<class T, class C>
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struct AccessorMethod
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{
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typedef void ArgumentType;
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typedef T ResultType;
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typedef ResultType (C::*AccessorPtr)(ArgumentType) const;
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};
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template<class T, class C>
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struct ModifierMethod
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{
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typedef T const &ArgumentType;
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typedef void ResultType;
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typedef ResultType (C::*ModifierPtr)(ArgumentType);
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};
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// MemberAccessType and MemberModifierType are conceptually
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// equivalent to the C++ member function functors series
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// (e.g. std::mem_ref_fun_t) except they deal with invoking the
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// requested routine without a return (MemberModifierType).
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// MemberAccessType is like std::mem_ref_fun_t but included here
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// to contract MemberModifierType.
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template<class T, class C>
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class MemberAccessorType
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: public AccessorMethod<T, C>
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{
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public:
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explicit
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MemberAccessorType(AccessorPtr ap)
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: m_ap(ap)
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{}
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ResultType
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operator()(C &rObject) const
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{
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return (rObject.*m_ap)();
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}
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private:
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AccessorMethod<T, C>::AccessorPtr m_ap;
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};
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template<class T, class C>
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class MemberModifierType
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: public ModifierMethod<T, C>
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{
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public:
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explicit
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MemberModifierType(ModifierPtr mp)
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: m_mp(mp)
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{};
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ResultType
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operator()(C &rObject, ArgumentType Arg) const
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{
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(rObject.*m_mp)(Arg);
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}
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private:
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ModifierMethod<T, C>::ModifierPtr m_mp;
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};
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} // namespace cci
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#endif // SLBCCI_METHODHELP_H
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