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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
commit | f8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch) | |
tree | 26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/libs/xpcom18a4/xpcom/ds/nsVariant.h | |
parent | Initial commit. (diff) | |
download | virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.tar.xz virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.zip |
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/ds/nsVariant.h')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/ds/nsVariant.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/ds/nsVariant.h b/src/libs/xpcom18a4/xpcom/ds/nsVariant.h new file mode 100644 index 00000000..393e745f --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/ds/nsVariant.h @@ -0,0 +1,203 @@ +/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is mozilla.org code. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * John Bandhauer <jband@netscape.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +/* The long avoided variant support for xpcom. */ + +#include "nsIVariant.h" +#include "nsStringFwd.h" +#include "xpt_struct.h" + +/** + * Map the nsAUTF8String, nsUTF8String classes to the nsACString and + * nsCString classes respectively for now. These defines need to be removed + * once Jag lands his nsUTF8String implementation. + */ +#define nsAUTF8String nsACString +#define nsUTF8String nsCString +#define PromiseFlatUTF8String PromiseFlatCString + +/** + * nsDiscriminatedUnion is a type that nsIVariant implementors *may* use + * to hold underlying data. It has no methods. So, its use requires no linkage + * to the xpcom module. + */ + +struct nsDiscriminatedUnion +{ + union { + PRInt8 mInt8Value; + PRInt16 mInt16Value; + PRInt32 mInt32Value; + PRInt64 mInt64Value; + PRUint8 mUint8Value; + PRUint16 mUint16Value; + PRUint32 mUint32Value; + PRUint64 mUint64Value; + float mFloatValue; + double mDoubleValue; + PRBool mBoolValue; + char mCharValue; + PRUnichar mWCharValue; + nsIID mIDValue; + nsAString* mAStringValue; + nsAUTF8String* mUTF8StringValue; + nsACString* mCStringValue; + struct { + nsISupports* mInterfaceValue; + nsIID mInterfaceID; + } iface; + struct { + nsIID mArrayInterfaceID; + void* mArrayValue; + PRUint32 mArrayCount; + PRUint16 mArrayType; + } array; + struct { + char* mStringValue; + PRUint32 mStringLength; + } str; + struct { + PRUnichar* mWStringValue; + PRUint32 mWStringLength; + } wstr; + } u; + PRUint16 mType; +}; + +/** + * nsVariant implements the generic variant support. The xpcom module registers + * a factory (see NS_VARIANT_CONTRACTID in nsIVariant.idl) that will create + * these objects. They are created 'empty' and 'writable'. + * + * nsIVariant users won't usually need to see this class. + * + * This class also has static helper methods that nsIVariant *implementors* can + * use to help them do all the 'standard' nsIVariant data conversions. + */ + +class NS_COM nsVariant : public nsIWritableVariant +{ +public: + NS_DECL_ISUPPORTS + NS_DECL_NSIVARIANT + NS_DECL_NSIWRITABLEVARIANT + + nsVariant(); + + static nsresult Initialize(nsDiscriminatedUnion* data); + static nsresult Cleanup(nsDiscriminatedUnion* data); + + static nsresult ConvertToInt8(const nsDiscriminatedUnion& data, PRUint8 *_retval); + static nsresult ConvertToInt16(const nsDiscriminatedUnion& data, PRInt16 *_retval); + static nsresult ConvertToInt32(const nsDiscriminatedUnion& data, PRInt32 *_retval); + static nsresult ConvertToInt64(const nsDiscriminatedUnion& data, PRInt64 *_retval); + static nsresult ConvertToUint8(const nsDiscriminatedUnion& data, PRUint8 *_retval); + static nsresult ConvertToUint16(const nsDiscriminatedUnion& data, PRUint16 *_retval); + static nsresult ConvertToUint32(const nsDiscriminatedUnion& data, PRUint32 *_retval); + static nsresult ConvertToUint64(const nsDiscriminatedUnion& data, PRUint64 *_retval); + static nsresult ConvertToFloat(const nsDiscriminatedUnion& data, float *_retval); + static nsresult ConvertToDouble(const nsDiscriminatedUnion& data, double *_retval); + static nsresult ConvertToBool(const nsDiscriminatedUnion& data, PRBool *_retval); + static nsresult ConvertToChar(const nsDiscriminatedUnion& data, char *_retval); + static nsresult ConvertToWChar(const nsDiscriminatedUnion& data, PRUnichar *_retval); + static nsresult ConvertToID(const nsDiscriminatedUnion& data, nsID * _retval); + static nsresult ConvertToAString(const nsDiscriminatedUnion& data, nsAString & _retval); + static nsresult ConvertToAUTF8String(const nsDiscriminatedUnion& data, nsAUTF8String & _retval); + static nsresult ConvertToACString(const nsDiscriminatedUnion& data, nsACString & _retval); + static nsresult ConvertToString(const nsDiscriminatedUnion& data, char **_retval); + static nsresult ConvertToWString(const nsDiscriminatedUnion& data, PRUnichar **_retval); + static nsresult ConvertToISupports(const nsDiscriminatedUnion& data, nsISupports **_retval); + static nsresult ConvertToInterface(const nsDiscriminatedUnion& data, nsIID * *iid, void * *iface); + static nsresult ConvertToArray(const nsDiscriminatedUnion& data, PRUint16 *type, nsIID* iid, PRUint32 *count, void * *ptr); + static nsresult ConvertToStringWithSize(const nsDiscriminatedUnion& data, PRUint32 *size, char **str); + static nsresult ConvertToWStringWithSize(const nsDiscriminatedUnion& data, PRUint32 *size, PRUnichar **str); + + static nsresult SetFromVariant(nsDiscriminatedUnion* data, nsIVariant* aValue); + + static nsresult SetFromInt8(nsDiscriminatedUnion* data, PRUint8 aValue); + static nsresult SetFromInt16(nsDiscriminatedUnion* data, PRInt16 aValue); + static nsresult SetFromInt32(nsDiscriminatedUnion* data, PRInt32 aValue); + static nsresult SetFromInt64(nsDiscriminatedUnion* data, PRInt64 aValue); + static nsresult SetFromUint8(nsDiscriminatedUnion* data, PRUint8 aValue); + static nsresult SetFromUint16(nsDiscriminatedUnion* data, PRUint16 aValue); + static nsresult SetFromUint32(nsDiscriminatedUnion* data, PRUint32 aValue); + static nsresult SetFromUint64(nsDiscriminatedUnion* data, PRUint64 aValue); + static nsresult SetFromFloat(nsDiscriminatedUnion* data, float aValue); + static nsresult SetFromDouble(nsDiscriminatedUnion* data, double aValue); + static nsresult SetFromBool(nsDiscriminatedUnion* data, PRBool aValue); + static nsresult SetFromChar(nsDiscriminatedUnion* data, char aValue); + static nsresult SetFromWChar(nsDiscriminatedUnion* data, PRUnichar aValue); + static nsresult SetFromID(nsDiscriminatedUnion* data, const nsID & aValue); + static nsresult SetFromAString(nsDiscriminatedUnion* data, const nsAString & aValue); + static nsresult SetFromAUTF8String(nsDiscriminatedUnion* data, const nsAUTF8String & aValue); + static nsresult SetFromACString(nsDiscriminatedUnion* data, const nsACString & aValue); + static nsresult SetFromString(nsDiscriminatedUnion* data, const char *aValue); + static nsresult SetFromWString(nsDiscriminatedUnion* data, const PRUnichar *aValue); + static nsresult SetFromISupports(nsDiscriminatedUnion* data, nsISupports *aValue); + static nsresult SetFromInterface(nsDiscriminatedUnion* data, const nsIID& iid, nsISupports *aValue); + static nsresult SetFromArray(nsDiscriminatedUnion* data, PRUint16 type, const nsIID* iid, PRUint32 count, void * aValue); + static nsresult SetFromStringWithSize(nsDiscriminatedUnion* data, PRUint32 size, const char *aValue); + static nsresult SetFromWStringWithSize(nsDiscriminatedUnion* data, PRUint32 size, const PRUnichar *aValue); + + static nsresult SetToVoid(nsDiscriminatedUnion* data); + static nsresult SetToEmpty(nsDiscriminatedUnion* data); + static nsresult SetToEmptyArray(nsDiscriminatedUnion* data); + +private: + ~nsVariant(); + +protected: + nsDiscriminatedUnion mData; + PRBool mWritable; +}; + +/** + * Users of nsIVariant should be using the contractID and not this CID. + * - see NS_VARIANT_CONTRACTID in nsIVariant.idl. + */ + +#define NS_VARIANT_CID \ +{ /* 0D6EA1D0-879C-11d5-90EF-0010A4E73D9A */ \ + 0xd6ea1d0, \ + 0x879c, \ + 0x11d5, \ + {0x90, 0xef, 0x0, 0x10, 0xa4, 0xe7, 0x3d, 0x9a}} + +#define NS_VARIANT_CLASSNAME "Variant" + |