debugger/Debugger.cpp

   1 /*
   2  *  Copyright (C) 2008 Apple Inc. All rights reserved.
   3  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   4  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #include "config.h"
  23 #include "Debugger.h"
  24
  25 #include "CollectorHeapIterator.h"
  26 #include "Error.h"
  27 #include "Interpreter.h"
  28 #include "JSFunction.h"
  29 #include "JSGlobalObject.h"
  30 #include "Parser.h"
  31 #include "Protect.h"
  32
  33 namespace JSC {
  34
  35 Debugger::~Debugger()
  36 {
  37     HashSet<JSGlobalObject*>::iterator end = m_globalObjects.end();
  38     for (HashSet<JSGlobalObject*>::iterator it = m_globalObjects.begin(); it != end; ++it)
  39         (*it)->setDebugger(0);
  40 }
  41
  42 void Debugger::attach(JSGlobalObject* globalObject)
  43 {
  44     ASSERT(!globalObject->debugger());
  45     globalObject->setDebugger(this);
  46     m_globalObjects.add(globalObject);
  47 }
  48
  49 void Debugger::detach(JSGlobalObject* globalObject)
  50 {
  51     ASSERT(m_globalObjects.contains(globalObject));
  52     m_globalObjects.remove(globalObject);
  53     globalObject->setDebugger(0);
  54 }
  55
  56 void Debugger::recompileAllJSFunctions(JSGlobalData* globalData)
  57 {
  58     // If JavaScript is running, it's not safe to recompile, since we'll end
  59     // up throwing away code that is live on the stack.
  60     ASSERT(!globalData->dynamicGlobalObject);
  61     if (globalData->dynamicGlobalObject)
  62         return;
  63
  64     typedef HashSet<FunctionExecutable*> FunctionExecutableSet;
  65     typedef HashMap<SourceProvider*, ExecState*> SourceProviderMap;
  66
  67     FunctionExecutableSet functionExecutables;
  68     SourceProviderMap sourceProviders;
  69
  70     LiveObjectIterator it = globalData->heap.primaryHeapBegin();
  71     LiveObjectIterator heapEnd = globalData->heap.primaryHeapEnd();
  72     for ( ; it != heapEnd; ++it) {
  73         if (!(*it)->inherits(&JSFunction::info))
  74             continue;
  75
  76         JSFunction* function = asFunction(*it);
  77         if (function->executable()->isHostFunction())
  78             continue;
  79
  80         FunctionExecutable* executable = function->jsExecutable();
  81
  82         // Check if the function is already in the set - if so,
  83         // we've already retranslated it, nothing to do here.
  84         if (!functionExecutables.add(executable).second)
  85             continue;
  86
  87         ExecState* exec = function->scope().globalObject()->JSGlobalObject::globalExec();
  88         executable->recompile(exec);
  89         if (function->scope().globalObject()->debugger() == this)
  90             sourceProviders.add(executable->source().provider(), exec);
  91     }
  92
  93     // Call sourceParsed() after reparsing all functions because it will execute
  94     // JavaScript in the inspector.
  95     SourceProviderMap::const_iterator end = sourceProviders.end();
  96     for (SourceProviderMap::const_iterator iter = sourceProviders.begin(); iter != end; ++iter)
  97         sourceParsed(iter->second, SourceCode(iter->first), -1, 0);
  98 }
  99
 100 JSValue evaluateInGlobalCallFrame(const UString& script, JSValue& exception, JSGlobalObject* globalObject)
 101 {
 102     CallFrame* globalCallFrame = globalObject->globalExec();
 103
 104     RefPtr<EvalExecutable> eval = EvalExecutable::create(globalCallFrame, makeSource(script));
 105     JSObject* error = eval->compile(globalCallFrame, globalCallFrame->scopeChain());
 106     if (error)
 107         return error;
 108
 109     return globalObject->globalData()->interpreter->execute(eval.get(), globalCallFrame, globalObject, globalCallFrame->scopeChain(), &exception);
 110 }
 111
 112 } // namespace JSC