home *** CD-ROM | disk | FTP | other *** search
- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** 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 Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998-1999
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * 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 ***** */
- #include "nsISupports.idl"
-
- %{C++
- #include "nsAString.h"
- #include "nsCOMPtr.h"
- %}
-
- /*
- * Should this really be scriptable? Using atoms from script or proxies
- * could be dangerous since double-wrapping could lead to loss of
- * pointer identity.
- */
-
- [scriptable, uuid(3d1b15b0-93b4-11d1-895b-006008911b81)]
- interface nsIAtom : nsISupports
- {
- /**
- * Get the Unicode or UTF8 value for the string
- */
- AString toString();
- AUTF8String toUTF8String();
-
- /**
- * Return a pointer to a zero terminated UTF8 string.
- */
- [noscript] void getUTF8String([shared, retval] out string aResult);
-
- /**
- * Compare the atom to a specific string value
- * Note that this will NEVER return/throw an error condition.
- */
- boolean equals(in AString aString);
-
- boolean equalsUTF8(in AUTF8String aString);
-
- %{C++
- // note this is NOT virtual so this won't muck with the vtable!
- inline PRBool Equals(const nsAString& s) {
- PRBool result;
- Equals(s, &result);
- return result;
- }
-
- inline PRBool EqualsUTF8(const nsACString& s) {
- PRBool result;
- EqualsUTF8(s, &result);
- return result;
- }
- %}
-
- };
-
-
- %{C++
- /*
- * The three forms of NS_NewAtom and do_GetAtom (for use with
- * |nsCOMPtr<nsIAtom>|) return the atom for the string given. At any
- * given time there will always be one atom representing a given string.
- * Atoms are intended to make string comparison cheaper by simplifying
- * it to pointer equality. A pointer to the atom that does not own a
- * reference is not guaranteed to be valid.
- *
- * The three forms of NS_NewPermanentAtom and do_GetPermanentAtom return
- * the atom for the given string and ensure that the atom is permanent.
- * An atom that is permanent will exist (occupy space at a specific
- * location in memory) until XPCOM is shut down. The advantage of
- * permanent atoms is that they do not need to maintain a reference
- * count, which requires locking and hurts performance.
- */
-
-
- /**
- * Find an atom that matches the given UTF-8 string.
- * The string is assumed to be zero terminated.
- */
- extern NS_COM nsIAtom* NS_NewAtom(const char* aUTF8String);
- extern NS_COM nsIAtom* NS_NewPermanentAtom(const char* aUTF8String);
-
- inline already_AddRefed<nsIAtom> do_GetAtom(const char* aUTF8String)
- { return NS_NewAtom(aUTF8String); }
- inline already_AddRefed<nsIAtom> do_GetPermanentAtom(const char* aUTF8String)
- { return NS_NewPermanentAtom(aUTF8String); }
-
- /**
- * Find an atom that matches the given UTF-8 string.
- */
- extern NS_COM nsIAtom* NS_NewAtom(const nsACString& aUTF8String);
- extern NS_COM nsIAtom* NS_NewPermanentAtom(const nsACString& aUTF8String);
-
- inline already_AddRefed<nsIAtom> do_GetAtom(const nsACString& aUTF8String)
- { return NS_NewAtom(aUTF8String); }
- inline already_AddRefed<nsIAtom> do_GetPermanentAtom(const nsACString& aUTF8String)
- { return NS_NewPermanentAtom(aUTF8String); }
-
- /**
- * Find an atom that matches the given UTF-16 string.
- * The string is assumed to be zero terminated.
- */
- extern NS_COM nsIAtom* NS_NewAtom(const PRUnichar* aUTF16String);
- extern NS_COM nsIAtom* NS_NewPermanentAtom(const PRUnichar* aUTF16String);
-
- inline already_AddRefed<nsIAtom> do_GetAtom(const PRUnichar* aUTF16String)
- { return NS_NewAtom(aUTF16String); }
- inline already_AddRefed<nsIAtom> do_GetPermanentAtom(const PRUnichar* aUTF16String)
- { return NS_NewPermanentAtom(aUTF16String); }
-
- /**
- * Find an atom that matches the given UTF-16 string.
- */
- extern NS_COM nsIAtom* NS_NewAtom(const nsAString& aUTF16String);
- extern NS_COM nsIAtom* NS_NewPermanentAtom(const nsAString& aUTF16String);
-
- inline already_AddRefed<nsIAtom> do_GetAtom(const nsAString& aUTF16String)
- { return NS_NewAtom(aUTF16String); }
- inline already_AddRefed<nsIAtom> do_GetPermanentAtom(const nsAString& aUTF16String)
- { return NS_NewPermanentAtom(aUTF16String); }
-
- /**
- * Return a count of the total number of atoms currently
- * alive in the system.
- */
- extern NS_COM nsrefcnt NS_GetNumberOfAtoms(void);
-
- %}
-