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