1 /*
2 * Copyright (C) 2003, 2006, 2008 Apple Inc.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21 #include "config.h"
22 #include "ScopeChain.h"
23
24 #include "JSActivation.h"
25 #include "JSGlobalObject.h"
26 #include "JSObject.h"
27 #include "PropertyNameArray.h"
28 #include <stdio.h>
29
30 namespace JSC {
31
32 #ifndef NDEBUG
33
print() const34 void ScopeChainNode::print() const
35 {
36 ScopeChainIterator scopeEnd = end();
37 for (ScopeChainIterator scopeIter = begin(); scopeIter != scopeEnd; ++scopeIter) {
38 JSObject* o = *scopeIter;
39 PropertyNameArray propertyNames(globalObject->globalExec());
40 o->getPropertyNames(globalObject->globalExec(), propertyNames);
41 PropertyNameArray::const_iterator propEnd = propertyNames.end();
42
43 fprintf(stderr, "----- [scope %p] -----\n", o);
44 for (PropertyNameArray::const_iterator propIter = propertyNames.begin(); propIter != propEnd; propIter++) {
45 Identifier name = *propIter;
46 fprintf(stderr, "%s, ", name.ascii());
47 }
48 fprintf(stderr, "\n");
49 }
50 }
51
52 #endif
53
localDepth() const54 int ScopeChain::localDepth() const
55 {
56 int scopeDepth = 0;
57 ScopeChainIterator iter = this->begin();
58 ScopeChainIterator end = this->end();
59 while (!(*iter)->inherits(&JSActivation::info)) {
60 ++iter;
61 if (iter == end)
62 break;
63 ++scopeDepth;
64 }
65 return scopeDepth;
66 }
67
68 } // namespace JSC
69