mirror of
https://github.com/rn10950/RetroZilla.git
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223 lines
8.8 KiB
C
223 lines
8.8 KiB
C
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* Public declarations for xptcall. */
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#ifndef xptcall_h___
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#define xptcall_h___
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#include "prtypes.h"
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#include "nscore.h"
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#include "nsISupports.h"
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#include "xpt_struct.h"
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#include "xptinfo.h"
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#include "nsIInterfaceInfo.h"
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/***************************************************************************/
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/*
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* The linkage of XPTC API functions differs depending on whether the file is
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* used within the XPTC library or not. Any source file within the XPTC
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* library should define EXPORT_XPTC_API whereas any client of the library
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* should not.
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*/
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#ifdef EXPORT_XPTC_API
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# define XPTC_PUBLIC_API(t) PR_IMPLEMENT(t)
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# define XPTC_PUBLIC_DATA(t) PR_IMPLEMENT_DATA(t)
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# define XPTC_EXPORT NS_EXPORT
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#else
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# define XPTC_PUBLIC_API(t) NS_IMPORT t
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# define XPTC_PUBLIC_DATA(t) NS_IMPORT t
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# define XPTC_EXPORT NS_IMPORT
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#endif
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#define XPTC_FRIEND_API(t) XPTC_PUBLIC_API(t)
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#define XPTC_FRIEND_DATA(t) XPTC_PUBLIC_DATA(t)
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/***************************************************************************/
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struct nsXPTCMiniVariant
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{
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// No ctors or dtors so that we can use arrays of these on the stack
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// with no penalty.
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union
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{
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PRInt8 i8;
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PRInt16 i16;
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PRInt32 i32;
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PRInt64 i64;
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PRUint8 u8;
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PRUint16 u16;
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PRUint32 u32;
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PRUint64 u64;
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float f;
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double d;
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PRBool b;
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char c;
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PRUnichar wc;
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void* p;
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} val;
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};
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struct nsXPTCVariant : public nsXPTCMiniVariant
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{
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// No ctors or dtors so that we can use arrays of these on the stack
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// with no penalty.
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// inherits 'val' here
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void* ptr;
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nsXPTType type;
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PRUint8 flags;
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enum
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{
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// these are bitflags!
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PTR_IS_DATA = 0x1, // ptr points to 'real' data in val
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VAL_IS_ALLOCD = 0x2, // val.p holds alloc'd ptr that must be freed
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VAL_IS_IFACE = 0x4, // val.p holds interface ptr that must be released
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VAL_IS_ARRAY = 0x8, // val.p holds a pointer to an array needing cleanup
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VAL_IS_DOMSTR = 0x10, // val.p holds a pointer to domstring needing cleanup
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VAL_IS_UTF8STR = 0x20, // val.p holds a pointer to utf8string needing cleanup
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VAL_IS_CSTR = 0x40 // val.p holds a pointer to cstring needing cleanup
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};
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void ClearFlags() {flags = 0;}
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void SetPtrIsData() {flags |= PTR_IS_DATA;}
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void SetValIsAllocated() {flags |= VAL_IS_ALLOCD;}
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void SetValIsInterface() {flags |= VAL_IS_IFACE;}
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void SetValIsArray() {flags |= VAL_IS_ARRAY;}
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void SetValIsDOMString() {flags |= VAL_IS_DOMSTR;}
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void SetValIsUTF8String() {flags |= VAL_IS_UTF8STR;}
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void SetValIsCString() {flags |= VAL_IS_CSTR;}
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PRBool IsPtrData() const {return 0 != (flags & PTR_IS_DATA);}
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PRBool IsValAllocated() const {return 0 != (flags & VAL_IS_ALLOCD);}
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PRBool IsValInterface() const {return 0 != (flags & VAL_IS_IFACE);}
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PRBool IsValArray() const {return 0 != (flags & VAL_IS_ARRAY);}
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PRBool IsValDOMString() const {return 0 != (flags & VAL_IS_DOMSTR);}
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PRBool IsValUTF8String() const {return 0 != (flags & VAL_IS_UTF8STR);}
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PRBool IsValCString() const {return 0 != (flags & VAL_IS_CSTR);}
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void Init(const nsXPTCMiniVariant& mv, const nsXPTType& t, PRUint8 f)
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{
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type = t;
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flags = f;
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if(f & PTR_IS_DATA)
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{
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ptr = mv.val.p;
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val.p = nsnull;
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}
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else
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{
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ptr = nsnull;
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switch(t.TagPart()) {
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case nsXPTType::T_I8: val.i8 = mv.val.i8; break;
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case nsXPTType::T_I16: val.i16 = mv.val.i16; break;
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case nsXPTType::T_I32: val.i32 = mv.val.i32; break;
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case nsXPTType::T_I64: val.i64 = mv.val.i64; break;
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case nsXPTType::T_U8: val.u8 = mv.val.u8; break;
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case nsXPTType::T_U16: val.u16 = mv.val.u16; break;
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case nsXPTType::T_U32: val.u32 = mv.val.u32; break;
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case nsXPTType::T_U64: val.u64 = mv.val.u64; break;
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case nsXPTType::T_FLOAT: val.f = mv.val.f; break;
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case nsXPTType::T_DOUBLE: val.d = mv.val.d; break;
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case nsXPTType::T_BOOL: val.b = mv.val.b; break;
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case nsXPTType::T_CHAR: val.c = mv.val.c; break;
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case nsXPTType::T_WCHAR: val.wc = mv.val.wc; break;
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case nsXPTType::T_VOID: /* fall through */
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case nsXPTType::T_IID: /* fall through */
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case nsXPTType::T_DOMSTRING: /* fall through */
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case nsXPTType::T_CHAR_STR: /* fall through */
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case nsXPTType::T_WCHAR_STR: /* fall through */
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case nsXPTType::T_INTERFACE: /* fall through */
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case nsXPTType::T_INTERFACE_IS: /* fall through */
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case nsXPTType::T_ARRAY: /* fall through */
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case nsXPTType::T_PSTRING_SIZE_IS: /* fall through */
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case nsXPTType::T_PWSTRING_SIZE_IS: /* fall through */
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case nsXPTType::T_UTF8STRING: /* fall through */
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case nsXPTType::T_CSTRING: /* fall through */
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default: val.p = mv.val.p; break;
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}
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}
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}
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};
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/***************************************************************************/
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#undef IMETHOD_VISIBILITY
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#define IMETHOD_VISIBILITY NS_VISIBILITY_DEFAULT
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class XPTC_EXPORT nsXPTCStubBase : public nsISupports
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{
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public:
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// We are going to implement this to force the compiler to generate a
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// vtbl for this class. Since this is overridden in the inheriting class
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// we expect it to never be called.
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// *This is needed by the Irix implementation.*
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
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// Include generated vtbl stub declarations.
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// These are virtual and *also* implemented by this class..
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#include "xptcstubsdecl.inc"
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// The following methods must be provided by inheritor of this class.
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// return a refcounted pointer to the InterfaceInfo for this object
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// NOTE: on some platforms this MUST not fail or we crash!
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NS_IMETHOD GetInterfaceInfo(nsIInterfaceInfo** info) = 0;
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// call this method and return result
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NS_IMETHOD CallMethod(PRUint16 methodIndex,
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const nsXPTMethodInfo* info,
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nsXPTCMiniVariant* params) = 0;
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};
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#undef IMETHOD_VISIBILITY
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#define IMETHOD_VISIBILITY NS_VISIBILITY_HIDDEN
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PR_BEGIN_EXTERN_C
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XPTC_PUBLIC_API(nsresult)
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XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex,
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PRUint32 paramCount, nsXPTCVariant* params);
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// Used to force linking of these obj for the static library into the dll
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extern void xptc_dummy();
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extern void xptc_dummy2();
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PR_END_EXTERN_C
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#endif /* xptcall_h___ */
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