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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "Debugger.h"
#include "Error.h"
#include "Interpreter.h"
#include "JSFunction.h"
#include "JSGlobalObject.h"
#include "Operations.h"
#include "Parser.h"
#include "Protect.h"
namespace {
using namespace JSC;
class Recompiler : public MarkedBlock::VoidFunctor {
public:
Recompiler(Debugger*);
~Recompiler();
void operator()(JSCell*);
private:
typedef HashSet<FunctionExecutable*> FunctionExecutableSet;
typedef HashMap<SourceProvider*, ExecState*> SourceProviderMap;
Debugger* m_debugger;
FunctionExecutableSet m_functionExecutables;
SourceProviderMap m_sourceProviders;
};
inline Recompiler::Recompiler(Debugger* debugger)
: m_debugger(debugger)
{
}
inline Recompiler::~Recompiler()
{
// Call sourceParsed() after reparsing all functions because it will execute
// JavaScript in the inspector.
SourceProviderMap::const_iterator end = m_sourceProviders.end();
for (SourceProviderMap::const_iterator iter = m_sourceProviders.begin(); iter != end; ++iter)
m_debugger->sourceParsed(iter->value, iter->key, -1, String());
}
inline void Recompiler::operator()(JSCell* cell)
{
if (!cell->inherits(&JSFunction::s_info))
return;
JSFunction* function = jsCast<JSFunction*>(cell);
if (function->executable()->isHostFunction())
return;
FunctionExecutable* executable = function->jsExecutable();
// Check if the function is already in the set - if so,
// we've already retranslated it, nothing to do here.
if (!m_functionExecutables.add(executable).isNewEntry)
return;
ExecState* exec = function->scope()->globalObject()->JSGlobalObject::globalExec();
executable->clearCodeIfNotCompiling();
executable->clearUnlinkedCodeForRecompilationIfNotCompiling();
if (m_debugger == function->scope()->globalObject()->debugger())
m_sourceProviders.add(executable->source().provider(), exec);
}
} // namespace
namespace JSC {
Debugger::~Debugger()
{
HashSet<JSGlobalObject*>::iterator end = m_globalObjects.end();
for (HashSet<JSGlobalObject*>::iterator it = m_globalObjects.begin(); it != end; ++it)
(*it)->setDebugger(0);
}
void Debugger::attach(JSGlobalObject* globalObject)
{
ASSERT(!globalObject->debugger());
globalObject->setDebugger(this);
m_globalObjects.add(globalObject);
}
void Debugger::detach(JSGlobalObject* globalObject)
{
ASSERT(m_globalObjects.contains(globalObject));
m_globalObjects.remove(globalObject);
globalObject->setDebugger(0);
}
void Debugger::recompileAllJSFunctions(VM* vm)
{
// If JavaScript is running, it's not safe to recompile, since we'll end
// up throwing away code that is live on the stack.
ASSERT(!vm->dynamicGlobalObject);
if (vm->dynamicGlobalObject)
return;
Recompiler recompiler(this);
vm->heap.objectSpace().forEachLiveCell(recompiler);
}
JSValue evaluateInGlobalCallFrame(const String& script, JSValue& exception, JSGlobalObject* globalObject)
{
CallFrame* globalCallFrame = globalObject->globalExec();
VM& vm = globalObject->vm();
EvalExecutable* eval = EvalExecutable::create(globalCallFrame, vm.codeCache(), makeSource(script), false);
if (!eval) {
exception = vm.exception;
vm.exception = JSValue();
return exception;
}
JSValue result = vm.interpreter->execute(eval, globalCallFrame, globalObject, globalCallFrame->scope());
if (vm.exception) {
exception = vm.exception;
vm.exception = JSValue();
}
ASSERT(result);
return result;
}
} // namespace JSC
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