DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (b66b287a2650)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
/* -*- 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 "nsStringGlue.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);

%}