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/*
* Copyright (C) 2014-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSJavaScriptCallFrame.h"
#include "DebuggerScope.h"
#include "Error.h"
#include "IdentifierInlines.h"
#include "JSCInlines.h"
#include "JSJavaScriptCallFramePrototype.h"
#include "ObjectConstructor.h"
using namespace JSC;
namespace Inspector {
const ClassInfo JSJavaScriptCallFrame::s_info = { "JavaScriptCallFrame", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSJavaScriptCallFrame) };
JSJavaScriptCallFrame::JSJavaScriptCallFrame(VM& vm, Structure* structure, Ref<JavaScriptCallFrame>&& impl)
: JSDestructibleObject(vm, structure)
, m_impl(&impl.leakRef())
{
}
void JSJavaScriptCallFrame::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(vm, info()));
}
JSObject* JSJavaScriptCallFrame::createPrototype(VM& vm, JSGlobalObject* globalObject)
{
return JSJavaScriptCallFramePrototype::create(vm, globalObject, JSJavaScriptCallFramePrototype::createStructure(vm, globalObject, globalObject->objectPrototype()));
}
void JSJavaScriptCallFrame::destroy(JSC::JSCell* cell)
{
JSJavaScriptCallFrame* thisObject = static_cast<JSJavaScriptCallFrame*>(cell);
thisObject->JSJavaScriptCallFrame::~JSJavaScriptCallFrame();
}
void JSJavaScriptCallFrame::releaseImpl()
{
if (auto impl = std::exchange(m_impl, nullptr))
impl->deref();
}
JSJavaScriptCallFrame::~JSJavaScriptCallFrame()
{
releaseImpl();
}
JSValue JSJavaScriptCallFrame::evaluateWithScopeExtension(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue scriptValue = exec->argument(0);
if (!scriptValue.isString())
return throwTypeError(exec, scope, "JSJavaScriptCallFrame.evaluateWithScopeExtension first argument must be a string."_s);
String script = asString(scriptValue)->value(exec);
RETURN_IF_EXCEPTION(scope, JSValue());
NakedPtr<Exception> exception;
JSObject* scopeExtension = exec->argument(1).getObject();
JSValue result = impl().evaluateWithScopeExtension(script, scopeExtension, exception);
if (exception)
throwException(exec, scope, exception);
return result;
}
static JSValue valueForScopeType(DebuggerScope* scope)
{
if (scope->isCatchScope())
return jsNumber(JSJavaScriptCallFrame::CATCH_SCOPE);
if (scope->isFunctionNameScope())
return jsNumber(JSJavaScriptCallFrame::FUNCTION_NAME_SCOPE);
if (scope->isWithScope())
return jsNumber(JSJavaScriptCallFrame::WITH_SCOPE);
if (scope->isNestedLexicalScope())
return jsNumber(JSJavaScriptCallFrame::NESTED_LEXICAL_SCOPE);
if (scope->isGlobalLexicalEnvironment())
return jsNumber(JSJavaScriptCallFrame::GLOBAL_LEXICAL_ENVIRONMENT_SCOPE);
if (scope->isGlobalScope())
return jsNumber(JSJavaScriptCallFrame::GLOBAL_SCOPE);
ASSERT(scope->isClosureScope());
return jsNumber(JSJavaScriptCallFrame::CLOSURE_SCOPE);
}
static JSValue valueForScopeLocation(ExecState* exec, const DebuggerLocation& location)
{
if (location.sourceID == noSourceID)
return jsNull();
// Debugger.Location protocol object.
VM& vm = exec->vm();
JSObject* result = constructEmptyObject(exec);
result->putDirect(vm, Identifier::fromString(vm, "scriptId"), jsString(vm, String::number(location.sourceID)));
result->putDirect(vm, Identifier::fromString(vm, "lineNumber"), jsNumber(location.line));
result->putDirect(vm, Identifier::fromString(vm, "columnNumber"), jsNumber(location.column));
return result;
}
JSValue JSJavaScriptCallFrame::scopeDescriptions(ExecState* exec)
{
VM& vm = exec->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
DebuggerScope* scopeChain = impl().scopeChain();
if (!scopeChain)
return jsUndefined();
int index = 0;
JSArray* array = constructEmptyArray(exec, nullptr);
DebuggerScope::iterator end = scopeChain->end();
for (DebuggerScope::iterator iter = scopeChain->begin(); iter != end; ++iter) {
DebuggerScope* scope = iter.get();
JSObject* description = constructEmptyObject(exec);
description->putDirect(vm, Identifier::fromString(vm, "type"), valueForScopeType(scope));
description->putDirect(vm, Identifier::fromString(vm, "name"), jsString(vm, scope->name()));
description->putDirect(vm, Identifier::fromString(vm, "location"), valueForScopeLocation(exec, scope->location()));
array->putDirectIndex(exec, index++, description);
RETURN_IF_EXCEPTION(throwScope, JSValue());
}
return array;
}
JSValue JSJavaScriptCallFrame::caller(ExecState* exec) const
{
return toJS(exec, globalObject(exec->vm()), impl().caller());
}
JSValue JSJavaScriptCallFrame::sourceID(ExecState*) const
{
return jsNumber(impl().sourceID());
}
JSValue JSJavaScriptCallFrame::line(ExecState*) const
{
return jsNumber(impl().line());
}
JSValue JSJavaScriptCallFrame::column(ExecState*) const
{
return jsNumber(impl().column());
}
JSValue JSJavaScriptCallFrame::functionName(ExecState* exec) const
{
return jsString(exec->vm(), impl().functionName());
}
JSValue JSJavaScriptCallFrame::scopeChain(ExecState* exec) const
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
if (!impl().scopeChain())
return jsNull();
DebuggerScope* scopeChain = impl().scopeChain();
DebuggerScope::iterator iter = scopeChain->begin();
DebuggerScope::iterator end = scopeChain->end();
// We must always have something in the scope chain.
ASSERT(iter != end);
MarkedArgumentBuffer list;
do {
list.append(iter.get());
++iter;
} while (iter != end);
if (UNLIKELY(list.hasOverflowed())) {
throwOutOfMemoryError(exec, scope);
return { };
}
return constructArray(exec, nullptr, globalObject(vm), list);
}
JSValue JSJavaScriptCallFrame::thisObject(ExecState*) const
{
return impl().thisValue();
}
JSValue JSJavaScriptCallFrame::isTailDeleted(JSC::ExecState*) const
{
return jsBoolean(impl().isTailDeleted());
}
JSValue JSJavaScriptCallFrame::type(ExecState* exec) const
{
VM& vm = exec->vm();
switch (impl().type()) {
case DebuggerCallFrame::FunctionType:
return jsNontrivialString(vm, "function"_s);
case DebuggerCallFrame::ProgramType:
return jsNontrivialString(vm, "program"_s);
}
ASSERT_NOT_REACHED();
return jsNull();
}
JSValue toJS(ExecState* exec, JSGlobalObject* globalObject, JavaScriptCallFrame* impl)
{
if (!impl)
return jsNull();
VM& vm = exec->vm();
JSObject* prototype = JSJavaScriptCallFrame::createPrototype(vm, globalObject);
Structure* structure = JSJavaScriptCallFrame::createStructure(vm, globalObject, prototype);
JSJavaScriptCallFrame* javaScriptCallFrame = JSJavaScriptCallFrame::create(vm, structure, *impl);
return javaScriptCallFrame;
}
} // namespace Inspector