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237 lines
6.5 KiB
C++
237 lines
6.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsCom_h__
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#define nsCom_h__
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/*
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* API Import/Export macros
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*/
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#ifdef _IMPL_NS_COM
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#ifdef XP_PC
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#define NS_COM _declspec(dllexport)
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#elif defined(XP_MAC)
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#define NS_COM __declspec(export)
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#elif defined(MOZ_STRIP_NOT_EXPORTED)
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#define NS_COM __attribute__ ((dllexport))
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#else /* !XP_PC */
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#define NS_COM
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#endif /* !XP_PC */
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#else /* !_IMPL_NS_COM */
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#ifdef XP_PC
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#define NS_COM _declspec(dllimport)
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#else /* !XP_PC */
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#define NS_COM
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#endif /* !XP_PC */
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#endif /* !_IMPL_NS_COM */
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/*
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* DLL Export macro
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*/
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#if defined(XP_PC)
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#define NS_EXPORT _declspec(dllexport)
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#define NS_EXPORT_(type) type _declspec(dllexport) __stdcall
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#define NS_IMETHOD_(type) virtual type __stdcall
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#define NS_IMETHOD virtual nsresult __stdcall
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#define NS_IMETHODIMP_(type) type __stdcall
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#define NS_IMETHODIMP nsresult __stdcall
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#define NS_METHOD_(type) type __stdcall
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#define NS_METHOD nsresult __stdcall
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#define NS_CALLBACK_(_type, _name) _type (__stdcall * _name)
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#define NS_CALLBACK(_name) nsresult (__stdcall * _name)
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#elif defined(XP_MAC)
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#define NS_EXPORT __declspec(export)
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#define NS_EXPORT_(type) __declspec(export) type
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#define NS_IMETHOD_(type) virtual type
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#define NS_IMETHOD virtual nsresult
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#define NS_IMETHODIMP_(type) type
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#define NS_IMETHODIMP nsresult
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#define NS_METHOD_(type) type
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#define NS_METHOD nsresult
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#define NS_CALLBACK_(_type, _name) _type (* _name)
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#define NS_CALLBACK(_name) nsresult (* _name)
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#else /* !XP_PC && !XP_MAC */
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#if defined(MOZ_STRIP_NOT_EXPORTED)
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#define NS_EXPORT __attribute__ ((dllexport))
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#define NS_EXPORT_(type) __attribute__ ((dllexport)) type
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#else
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#define NS_EXPORT
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#define NS_EXPORT_(type) type
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#endif
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#define NS_IMETHOD_(type) virtual type
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#define NS_IMETHOD virtual nsresult
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#define NS_IMETHODIMP_(type) type
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#define NS_IMETHODIMP nsresult
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#define NS_METHOD_(type) type
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#define NS_METHOD nsresult
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#define NS_CALLBACK_(_type, _name) _type (* _name)
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#define NS_CALLBACK(_name) nsresult (* _name)
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#endif /* !XP_PC */
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/* use these functions to associate get/set methods with a
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C++ member variable
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*/
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#define NS_METHOD_GETTER(_method, _type, _member) \
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_method(_type* aResult) \
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{\
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if (!aResult) return NS_ERROR_NULL_POINTER; \
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*aResult = _member; \
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return NS_OK; \
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}
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#define NS_METHOD_SETTER(_method, _type, _member) \
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_method(_type aResult) \
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{ \
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_member = aResult; \
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return NS_OK; \
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}
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/*
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* special for strings to get/set char* strings
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* using PL_strdup and PR_FREEIF
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*/
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#define NS_METHOD_GETTER_STR(_method,_member) \
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_method(char* *aString)\
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{\
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if (!aString) return NS_ERROR_NULL_POINTER; \
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*aString = PL_strdup(_member); \
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return NS_OK; \
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}
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#define NS_METHOD_SETTER_STR(_method, _member) \
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_method(const char *aString)\
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{\
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PR_FREEIF(_member);\
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if (aString) _member = PL_strdup(aString); \
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else _member = nsnull;\
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return NS_OK; \
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}
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/* Getter/Setter macros.
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Usage:
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NS_IMPL_[CLASS_]GETTER[_<type>](method, [type,] member);
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NS_IMPL_[CLASS_]SETTER[_<type>](method, [type,] member);
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NS_IMPL_[CLASS_]GETSET[_<type>]([class, ]postfix, [type,] member);
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where:
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CLASS_ - implementation is inside a class definition
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(otherwise the class name is needed)
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Do NOT use in publicly exported header files, because
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the implementation may be included many times over.
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Instead, use the non-CLASS_ version.
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_<type> - For more complex (STR, IFACE) data types
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(otherwise the simple data type is needed)
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method - name of the method, such as GetWidth or SetColor
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type - simple data type if required
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member - class member variable such as m_width or mColor
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class - the class name, such as Window or MyObject
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postfix - Method part after Get/Set such as "Width" for "GetWidth"
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Example:
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class Window {
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public:
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NS_IMPL_CLASS_GETSET(Width, int, m_width);
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NS_IMPL_CLASS_GETTER_STR(GetColor, m_color);
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NS_IMETHOD SetColor(char *color);
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private:
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int m_width; // read/write
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char *m_color; // readonly
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};
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// defined outside of class
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NS_IMPL_SETTER_STR(Window::GetColor, m_color);
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Questions/Comments to alecf@netscape.com
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*/
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/*
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* Getter/Setter implementation within a class definition
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*/
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/* simple data types */
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#define NS_IMPL_CLASS_GETTER(_method, _type, _member) \
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NS_IMETHOD NS_METHOD_GETTER(_method, _type, _member)
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#define NS_IMPL_CLASS_SETTER(_method, _type, _member) \
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NS_IMETHOD NS_METHOD_SETTER(_method, _type, _member)
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#define NS_IMPL_CLASS_GETSET(_postfix, _type, _member) \
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NS_IMPL_CLASS_GETTER(Get##_postfix, _type, _member) \
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NS_IMPL_CLASS_SETTER(Set##_postfix, _type, _member)
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/* strings */
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#define NS_IMPL_CLASS_GETTER_STR(_method, _member) \
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NS_IMETHOD NS_METHOD_GETTER_STR(_method, _member)
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#define NS_IMPL_CLASS_SETTER_STR(_method, _member) \
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NS_IMETHOD NS_METHOD_SETTER_STR(_method, _member)
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#define NS_IMPL_CLASS_GETSET_STR(_postfix, _member) \
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NS_IMPL_CLASS_GETTER_STR(Get##_postfix, _member) \
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NS_IMPL_CLASS_SETTER_STR(Set##_postfix, _member)
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/* Getter/Setter implementation outside of a class definition */
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/* simple data types */
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#define NS_IMPL_GETTER(_method, _type, _member) \
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NS_IMETHODIMP NS_METHOD_GETTER(_method, _type, _member)
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#define NS_IMPL_SETTER(_method, _type, _member) \
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NS_IMETHODIMP NS_METHOD_SETTER(_method, _type, _member)
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#define NS_IMPL_GETSET(_class, _postfix, _type, _member) \
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NS_IMPL_GETTER(_class::Get##_postfix, _type, _member) \
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NS_IMPL_SETTER(_class::Set##_postfix, _type, _member)
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/* strings */
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#define NS_IMPL_GETTER_STR(_method, _member) \
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NS_IMETHODIMP NS_METHOD_GETTER_STR(_method, _member)
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#define NS_IMPL_SETTER_STR(_method, _member) \
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NS_IMETHODIMP NS_METHOD_SETTER_STR(_method, _member)
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#define NS_IMPL_GETSET_STR(_class, _postfix, _member) \
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NS_IMPL_GETTER_STR(_class::Get##_postfix, _member) \
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NS_IMPL_SETTER_STR(_class::Set##_postfix, _member)
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#endif
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