| 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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| 2 | /* ***** BEGIN LICENSE BLOCK *****
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| 3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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| 4 | *
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| 5 | * The contents of this file are subject to the Mozilla Public License Version
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| 6 | * 1.1 (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | * http://www.mozilla.org/MPL/
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| 9 | *
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| 10 | * Software distributed under the License is distributed on an "AS IS" basis,
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| 11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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| 12 | * for the specific language governing rights and limitations under the
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| 13 | * License.
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| 14 | *
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| 15 | * The Original Code is mozilla.org code.
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| 16 | *
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| 17 | * The Initial Developer of the Original Code is
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| 18 | * Netscape Communications Corporation.
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| 19 | * Portions created by the Initial Developer are Copyright (C) 1999
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| 20 | * the Initial Developer. All Rights Reserved.
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| 21 | *
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| 22 | * Contributor(s):
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| 23 | *
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| 24 | * Alternatively, the contents of this file may be used under the terms of
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| 25 | * either of the GNU General Public License Version 2 or later (the "GPL"),
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| 26 | * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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| 27 | * in which case the provisions of the GPL or the LGPL are applicable instead
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| 28 | * of those above. If you wish to allow use of your version of this file only
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| 29 | * under the terms of either the GPL or the LGPL, and not to allow others to
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| 30 | * use your version of this file under the terms of the MPL, indicate your
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| 31 | * decision by deleting the provisions above and replace them with the notice
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| 32 | * and other provisions required by the GPL or the LGPL. If you do not delete
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| 33 | * the provisions above, a recipient may use your version of this file under
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| 34 | * the terms of any one of the MPL, the GPL or the LGPL.
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| 35 | *
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| 36 | * ***** END LICENSE BLOCK ***** */
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| 37 |
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| 38 | /* Public declarations for xptcall. */
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| 39 |
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| 40 | #ifndef xptcall_h___
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| 41 | #define xptcall_h___
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| 42 |
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| 43 | #include "prtypes.h"
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| 44 | #include "nscore.h"
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| 45 | #include "nsISupports.h"
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| 46 | #include "xpt_struct.h"
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| 47 | #include "xptinfo.h"
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| 48 | #include "nsIInterfaceInfo.h"
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| 49 |
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| 50 | #ifdef VBOX_WITH_XPCOM_NAMESPACE_CLEANUP
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| 51 | #define XPTC_InvokeByIndex VBoxNsxpXPTC_InvokeByIndex
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| 52 | #endif /* VBOX_WITH_XPCOM_NAMESPACE_CLEANUP */
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| 53 |
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| 54 | /***************************************************************************/
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| 55 | /*
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| 56 | * The linkage of XPTC API functions differs depending on whether the file is
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| 57 | * used within the XPTC library or not. Any source file within the XPTC
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| 58 | * library should define EXPORT_XPTC_API whereas any client of the library
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| 59 | * should not.
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| 60 | */
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| 61 | #ifdef EXPORT_XPTC_API
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| 62 | #define XPTC_PUBLIC_API(t) PR_IMPLEMENT(t)
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| 63 | #define XPTC_PUBLIC_DATA(t) PR_IMPLEMENT_DATA(t)
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| 64 | #if defined(_WIN32)
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| 65 | # define XPTC_EXPORT __declspec(dllexport)
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| 66 | #elif defined(XP_OS2) && defined(__declspec)
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| 67 | # define XPTC_EXPORT __declspec(dllexport)
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| 68 | #elif defined(XP_OS2_VACPP)
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| 69 | # define XPTC_EXPORT extern
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| 70 | #else
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| 71 | # ifdef VBOX_HAVE_VISIBILITY_HIDDEN
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| 72 | # define XPTC_EXPORT __attribute__((visibility("default")))
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| 73 | # else
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| 74 | # define XPTC_EXPORT
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| 75 | # endif
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| 76 | #endif
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| 77 | #else
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| 78 | #if defined(_WIN32)
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| 79 | # define XPTC_PUBLIC_API(t) __declspec(dllimport) t
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| 80 | # define XPTC_PUBLIC_DATA(t) __declspec(dllimport) t
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| 81 | # define XPTC_EXPORT __declspec(dllimport)
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| 82 | #elif defined(XP_OS2) && defined(__declspec)
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| 83 | # define XPTC_PUBLIC_API(t) __declspec(dllimport) t
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| 84 | # define XPTC_PUBLIC_DATA(t) __declspec(dllimport) t
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| 85 | # define XPTC_EXPORT __declspec(dllimport)
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| 86 | #elif defined(XP_OS2_VACPP)
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| 87 | # define XPTC_PUBLIC_API(t) extern t
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| 88 | # define XPTC_PUBLIC_DATA(t) extern t
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| 89 | # define XPTC_EXPORT extern
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| 90 | #else
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| 91 | # define XPTC_PUBLIC_API(t) PR_IMPLEMENT(t)
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| 92 | # define XPTC_PUBLIC_DATA(t) t
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| 93 | # define XPTC_EXPORT
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| 94 | #endif
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| 95 | #endif
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| 96 | #define XPTC_FRIEND_API(t) XPTC_PUBLIC_API(t)
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| 97 | #define XPTC_FRIEND_DATA(t) XPTC_PUBLIC_DATA(t)
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| 98 | /***************************************************************************/
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| 99 |
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| 100 | struct nsXPTCMiniVariant
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| 101 | {
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| 102 | // No ctors or dtors so that we can use arrays of these on the stack
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| 103 | // with no penalty.
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| 104 | union
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| 105 | {
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| 106 | PRInt8 i8;
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| 107 | PRInt16 i16;
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| 108 | PRInt32 i32;
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| 109 | PRInt64 i64;
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| 110 | PRUint8 u8;
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| 111 | PRUint16 u16;
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| 112 | PRUint32 u32;
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| 113 | PRUint64 u64;
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| 114 | float f;
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| 115 | double d;
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| 116 | PRBool b;
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| 117 | char c;
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| 118 | PRUnichar wc;
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| 119 | void* p;
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| 120 | } val;
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| 121 | };
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| 122 |
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| 123 | struct nsXPTCVariant : public nsXPTCMiniVariant
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| 124 | {
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| 125 | // No ctors or dtors so that we can use arrays of these on the stack
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| 126 | // with no penalty.
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| 127 |
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| 128 | // inherits 'val' here
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| 129 | void* ptr;
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| 130 | nsXPTType type;
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| 131 | PRUint8 flags;
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| 132 |
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| 133 | enum
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| 134 | {
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| 135 | // these are bitflags!
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| 136 | PTR_IS_DATA = 0x1, // ptr points to 'real' data in val
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| 137 | VAL_IS_ALLOCD = 0x2, // val.p holds alloc'd ptr that must be freed
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| 138 | VAL_IS_IFACE = 0x4, // val.p holds interface ptr that must be released
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| 139 | VAL_IS_ARRAY = 0x8, // val.p holds a pointer to an array needing cleanup
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| 140 | VAL_IS_DOMSTR = 0x10, // val.p holds a pointer to domstring needing cleanup
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| 141 | VAL_IS_UTF8STR = 0x20, // val.p holds a pointer to utf8string needing cleanup
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| 142 | VAL_IS_CSTR = 0x40 // val.p holds a pointer to cstring needing cleanup
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| 143 | };
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| 144 |
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| 145 | /* VBox: Added to prevent -Wclass-memaccess warnings (nsXPTType has a constructor) in python/src/VariantUtils.cpp */
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| 146 | nsXPTCVariant() : ptr(NULL), flags(0)
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| 147 | {
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| 148 | val.p = NULL;
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| 149 | type.flags = 0; /* stupid nsXPTType constructor only do random bytes (documented) */
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| 150 | }
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| 151 |
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| 152 | void ClearFlags() {flags = 0;}
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| 153 | void SetPtrIsData() {flags |= PTR_IS_DATA;}
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| 154 | void SetValIsAllocated() {flags |= VAL_IS_ALLOCD;}
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| 155 | void SetValIsInterface() {flags |= VAL_IS_IFACE;}
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| 156 | void SetValIsArray() {flags |= VAL_IS_ARRAY;}
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| 157 | void SetValIsDOMString() {flags |= VAL_IS_DOMSTR;}
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| 158 | void SetValIsUTF8String() {flags |= VAL_IS_UTF8STR;}
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| 159 | void SetValIsCString() {flags |= VAL_IS_CSTR;}
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| 160 |
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| 161 | PRBool IsPtrData() const {return 0 != (flags & PTR_IS_DATA);}
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| 162 | PRBool IsValAllocated() const {return 0 != (flags & VAL_IS_ALLOCD);}
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| 163 | PRBool IsValInterface() const {return 0 != (flags & VAL_IS_IFACE);}
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| 164 | PRBool IsValArray() const {return 0 != (flags & VAL_IS_ARRAY);}
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| 165 | PRBool IsValDOMString() const {return 0 != (flags & VAL_IS_DOMSTR);}
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| 166 | PRBool IsValUTF8String() const {return 0 != (flags & VAL_IS_UTF8STR);}
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| 167 | PRBool IsValCString() const {return 0 != (flags & VAL_IS_CSTR);}
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| 168 | #ifdef VBOX
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| 169 | PRBool MustFreeVal() const {return 0 != (flags & ( VAL_IS_ALLOCD
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| 170 | | VAL_IS_IFACE
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| 171 | | VAL_IS_DOMSTR
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| 172 | | VAL_IS_UTF8STR
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| 173 | | VAL_IS_CSTR)); }
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| 174 | #endif
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| 175 |
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| 176 | void Init(const nsXPTCMiniVariant& mv, const nsXPTType& t, PRUint8 f)
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| 177 | {
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| 178 | type = t;
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| 179 | flags = f;
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| 180 |
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| 181 | if(f & PTR_IS_DATA)
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| 182 | {
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| 183 | ptr = mv.val.p;
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| 184 | val.p = nsnull;
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| 185 | }
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| 186 | else
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| 187 | {
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| 188 | ptr = nsnull;
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| 189 | switch(t.TagPart()) {
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| 190 | case nsXPTType::T_I8: val.i8 = mv.val.i8; break;
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| 191 | case nsXPTType::T_I16: val.i16 = mv.val.i16; break;
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| 192 | case nsXPTType::T_I32: val.i32 = mv.val.i32; break;
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| 193 | case nsXPTType::T_I64: val.i64 = mv.val.i64; break;
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| 194 | case nsXPTType::T_U8: val.u8 = mv.val.u8; break;
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| 195 | case nsXPTType::T_U16: val.u16 = mv.val.u16; break;
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| 196 | case nsXPTType::T_U32: val.u32 = mv.val.u32; break;
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| 197 | case nsXPTType::T_U64: val.u64 = mv.val.u64; break;
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| 198 | case nsXPTType::T_FLOAT: val.f = mv.val.f; break;
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| 199 | case nsXPTType::T_DOUBLE: val.d = mv.val.d; break;
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| 200 | case nsXPTType::T_BOOL: val.b = mv.val.b; break;
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| 201 | case nsXPTType::T_CHAR: val.c = mv.val.c; break;
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| 202 | case nsXPTType::T_WCHAR: val.wc = mv.val.wc; break;
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| 203 | case nsXPTType::T_VOID: /* fall through */
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| 204 | case nsXPTType::T_IID: /* fall through */
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| 205 | case nsXPTType::T_DOMSTRING: /* fall through */
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| 206 | case nsXPTType::T_CHAR_STR: /* fall through */
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| 207 | case nsXPTType::T_WCHAR_STR: /* fall through */
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| 208 | case nsXPTType::T_INTERFACE: /* fall through */
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| 209 | case nsXPTType::T_INTERFACE_IS: /* fall through */
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| 210 | case nsXPTType::T_ARRAY: /* fall through */
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| 211 | case nsXPTType::T_PSTRING_SIZE_IS: /* fall through */
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| 212 | case nsXPTType::T_PWSTRING_SIZE_IS: /* fall through */
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| 213 | case nsXPTType::T_UTF8STRING: /* fall through */
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| 214 | case nsXPTType::T_CSTRING: /* fall through */
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| 215 | default: val.p = mv.val.p; break;
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| 216 | }
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| 217 | }
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| 218 | }
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| 219 | };
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| 220 |
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| 221 | /***************************************************************************/
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| 222 |
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| 223 | #undef IMETHOD_VISIBILITY
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| 224 | #define IMETHOD_VISIBILITY NS_VISIBILITY_DEFAULT
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| 225 |
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| 226 | class XPTC_EXPORT nsXPTCStubBase : public nsISupports
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| 227 | {
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| 228 | public:
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| 229 | // We are going to implement this to force the compiler to generate a
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| 230 | // vtbl for this class. Since this is overridden in the inheriting class
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| 231 | // we expect it to never be called.
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| 232 | // *This is needed by the Irix implementation.*
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| 233 | NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
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| 234 |
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| 235 | // Implement dummy constructor, destructor to workaround Solaris gcc 4.8.2
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| 236 | // linking issue (see @bugref{5838}).
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| 237 | nsXPTCStubBase() {}
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| 238 | ~nsXPTCStubBase() {}
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| 239 |
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| 240 | // Include generated vtbl stub declarations.
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| 241 | // These are virtual and *also* implemented by this class..
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| 242 | #include "xptcstubsdecl.inc"
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| 243 |
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| 244 | // The following methods must be provided by inheritor of this class.
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| 245 |
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| 246 | // return a refcounted pointer to the InterfaceInfo for this object
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| 247 | // NOTE: on some platforms this MUST not fail or we crash!
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| 248 | NS_IMETHOD GetInterfaceInfo(nsIInterfaceInfo** info) = 0;
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| 249 |
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| 250 | // call this method and return result
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| 251 | NS_IMETHOD CallMethod(PRUint16 methodIndex,
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| 252 | const nsXPTMethodInfo* info,
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| 253 | nsXPTCMiniVariant* params) = 0;
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| 254 | };
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| 255 |
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| 256 | #undef IMETHOD_VISIBILITY
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| 257 | #define IMETHOD_VISIBILITY NS_VISIBILITY_HIDDEN
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| 258 |
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| 259 | PR_BEGIN_EXTERN_C
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| 260 |
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| 261 | XPTC_PUBLIC_API(nsresult)
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| 262 | XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex,
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| 263 | PRUint32 paramCount, nsXPTCVariant* params);
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| 264 |
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| 265 | // Used to force linking of these obj for the static library into the dll
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| 266 | extern void xptc_dummy();
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| 267 | extern void xptc_dummy2();
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| 268 |
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| 269 | PR_END_EXTERN_C
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| 270 |
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| 271 | #endif /* xptcall_h___ */
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