gecko/js/src/jsatominlines.h

96 lines
3.3 KiB
C

/* -*- Mode: C; tab-width: 8; 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 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
* 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 ***** */
#ifndef jsatominlines_h___
#define jsatominlines_h___
#include "jsatom.h"
#include "jsnum.h"
/*
* Convert v to an atomized string and wrap it as an id.
*/
inline JSBool
js_ValueToStringId(JSContext *cx, jsval v, jsid *idp)
{
JSString *str;
JSAtom *atom;
/*
* Optimize for the common case where v is an already-atomized string. The
* comment in jsstr.h before JSString::flatSetAtomized explains why this is
* thread-safe. The extra rooting via lastAtom (which would otherwise be
* done in js_js_AtomizeString) ensures the caller that the resulting id at
* is least weakly rooted.
*/
if (JSVAL_IS_STRING(v)) {
str = JSVAL_TO_STRING(v);
if (str->isAtomized()) {
cx->weakRoots.lastAtom = v;
*idp = ATOM_TO_JSID((JSAtom *) v);
return JS_TRUE;
}
} else {
str = js_ValueToString(cx, v);
if (!str)
return JS_FALSE;
}
atom = js_AtomizeString(cx, str, 0);
if (!atom)
return JS_FALSE;
*idp = ATOM_TO_JSID(atom);
return JS_TRUE;
}
inline JSBool
js_Int32ToId(JSContext* cx, int32 index, jsid* id)
{
if (INT_FITS_IN_JSVAL(index)) {
*id = INT_TO_JSID(index);
JS_ASSERT(INT_JSID_TO_JSVAL(*id) == INT_TO_JSVAL(index));
return JS_TRUE;
}
JSString* str = js_NumberToString(cx, index);
if (!str)
return JS_FALSE;
return js_ValueToStringId(cx, STRING_TO_JSVAL(str), id);
}
#endif /* jsatominlines_h___ */