1 /*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "JSJavaScriptCallFrame.h"
28
29 #if ENABLE(JAVASCRIPT_DEBUGGER)
30
31 #include "JavaScriptCallFrame.h"
32 #include <runtime/ArrayPrototype.h>
33 #include <runtime/Error.h>
34
35 using namespace JSC;
36
37 namespace WebCore {
38
evaluate(ExecState * exec)39 JSValue JSJavaScriptCallFrame::evaluate(ExecState* exec)
40 {
41 JSValue exception;
42 JSValue result = impl()->evaluate(exec->argument(0).toString(exec), exception);
43
44 if (exception)
45 throwError(exec, exception);
46
47 return result;
48 }
49
thisObject(ExecState *) const50 JSValue JSJavaScriptCallFrame::thisObject(ExecState*) const
51 {
52 return impl()->thisObject() ? JSValue(impl()->thisObject()) : jsNull();
53 }
54
type(ExecState * exec) const55 JSValue JSJavaScriptCallFrame::type(ExecState* exec) const
56 {
57 switch (impl()->type()) {
58 case DebuggerCallFrame::FunctionType:
59 return jsString(exec, UString("function"));
60 case DebuggerCallFrame::ProgramType:
61 return jsString(exec, UString("program"));
62 }
63
64 ASSERT_NOT_REACHED();
65 return jsNull();
66 }
67
scopeChain(ExecState * exec) const68 JSValue JSJavaScriptCallFrame::scopeChain(ExecState* exec) const
69 {
70 if (!impl()->scopeChain())
71 return jsNull();
72
73 ScopeChainNode* scopeChain = impl()->scopeChain();
74 ScopeChainIterator iter = scopeChain->begin();
75 ScopeChainIterator end = scopeChain->end();
76
77 // we must always have something in the scope chain
78 ASSERT(iter != end);
79
80 MarkedArgumentBuffer list;
81 do {
82 list.append(iter->get());
83 ++iter;
84 } while (iter != end);
85
86 return constructArray(exec, list);
87 }
88
scopeType(ExecState * exec)89 JSValue JSJavaScriptCallFrame::scopeType(ExecState* exec)
90 {
91 if (!impl()->scopeChain())
92 return jsUndefined();
93
94 if (!exec->argument(0).isInt32())
95 return jsUndefined();
96 int index = exec->argument(0).asInt32();
97
98 ScopeChainNode* scopeChain = impl()->scopeChain();
99 ScopeChainIterator end = scopeChain->end();
100
101 bool foundLocalScope = false;
102 for (ScopeChainIterator iter = scopeChain->begin(); iter != end; ++iter) {
103 JSObject* scope = iter->get();
104 if (scope->isActivationObject()) {
105 if (!foundLocalScope) {
106 // First activation object is local scope, each successive activation object is closure.
107 if (!index)
108 return jsJavaScriptCallFrameLOCAL_SCOPE(exec, JSValue(), Identifier());
109 foundLocalScope = true;
110 } else if (!index)
111 return jsJavaScriptCallFrameCLOSURE_SCOPE(exec, JSValue(), Identifier());
112 }
113
114 if (!index) {
115 // Last in the chain is global scope.
116 if (++iter == end)
117 return jsJavaScriptCallFrameGLOBAL_SCOPE(exec, JSValue(), Identifier());
118 return jsJavaScriptCallFrameWITH_SCOPE(exec, JSValue(), Identifier());
119 }
120
121 --index;
122 }
123 return jsUndefined();
124 }
125
126 } // namespace WebCore
127
128 #endif // ENABLE(JAVASCRIPT_DEBUGGER)
129