js/src/jsscriptinlines.h

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * vim: set ts=8 sw=4 et tw=79 ft=cpp:
   3  *
   4  * ***** BEGIN LICENSE BLOCK *****
   5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   6  *
   7  * The contents of this file are subject to the Mozilla Public License Version
   8  * 1.1 (the "License"); you may not use this file except in compliance with
   9  * the License. You may obtain a copy of the License at
  10  * http://www.mozilla.org/MPL/
  11  *
  12  * Software distributed under the License is distributed on an "AS IS" basis,
  13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  14  * for the specific language governing rights and limitations under the
  15  * License.
  16  *
  17  * The Original Code is SpiderMonkey JavaScript engine.
  18  *
  19  * The Initial Developer of the Original Code is
  20  * Mozilla Corporation.
  21  * Portions created by the Initial Developer are Copyright (C) 2009
  22  * the Initial Developer. All Rights Reserved.
  23  *
  24  * Contributor(s):
  25  *   Jason Orendorff <jorendorff@mozilla.com>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
  29  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  30  * in which case the provisions of the GPL or the LGPL are applicable instead
  31  * of those above. If you wish to allow use of your version of this file only
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  34  * decision by deleting the provisions above and replace them with the notice
  35  * and other provisions required by the GPL or the LGPL. If you do not delete
  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #ifndef jsscriptinlines_h___
  42 #define jsscriptinlines_h___
  43
  44 #include "jsfun.h"
  45 #include "jsopcode.h"
  46 #include "jsregexp.h"
  47 #include "jsscript.h"
  48
  49 inline JSFunction *
  50 JSScript::getFunction(size_t index)
  51 {
  52     JSObject *funobj = getObject(index);
  53     JS_ASSERT(funobj->isFunction());
  54     JS_ASSERT(funobj == (JSObject *) funobj->getPrivate());
  55     JSFunction *fun = (JSFunction *) funobj;
  56     JS_ASSERT(FUN_INTERPRETED(fun));
  57     return fun;
  58 }
  59
  60 inline JSObject *
  61 JSScript::getRegExp(size_t index)
  62 {
  63     JSObjectArray *arr = regexps();
  64     JS_ASSERT((uint32) index < arr->length);
  65     JSObject *obj = arr->vector[index];
  66     JS_ASSERT(obj->getClass() == &js_RegExpClass);
  67     return obj;
  68 }
  69
  70 inline bool
  71 JSScript::isEmpty() const
  72 {
  73     if (this == emptyScript())
  74         return true;
  75
  76     if (length <= 3) {
  77         jsbytecode *pc = code;
  78
  79         if (JSOp(*pc) == JSOP_TRACE)
  80             ++pc;
  81         if (noScriptRval && JSOp(*pc) == JSOP_FALSE)
  82             ++pc;
  83         if (JSOp(*pc) == JSOP_STOP)
  84             return true;
  85     }
  86     return false;
  87 }
  88
  89 #endif /* jsscriptinlines_h___ */