runtime/Completion.cpp

   1 /*
   2  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2003, 2007 Apple Inc.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library 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  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #include "config.h"
  24 #include "Completion.h"
  25
  26 #include "CallFrame.h"
  27 #include "JSGlobalObject.h"
  28 #include "JSLock.h"
  29 #include "Interpreter.h"
  30 #include "Parser.h"
  31 #include "Debugger.h"
  32 #include <stdio.h>
  33
  34 namespace JSC {
  35
  36 Completion checkSyntax(ExecState* exec, const SourceCode& source)
  37 {
  38     JSLock lock(exec);
  39     ASSERT(exec->globalData().identifierTable == currentIdentifierTable());
  40
  41     RefPtr<ProgramExecutable> program = ProgramExecutable::create(exec, source);
  42     JSObject* error = program->checkSyntax(exec);
  43     if (error)
  44         return Completion(Throw, error);
  45
  46     return Completion(Normal);
  47 }
  48
  49 Completion evaluate(ExecState* exec, ScopeChain& scopeChain, const SourceCode& source, JSValue thisValue)
  50 {
  51     JSLock lock(exec);
  52     ASSERT(exec->globalData().identifierTable == currentIdentifierTable());
  53
  54     RefPtr<ProgramExecutable> program = ProgramExecutable::create(exec, source);
  55     JSObject* error = program->compile(exec, scopeChain.node());
  56     if (error)
  57         return Completion(Throw, error);
  58
  59     JSObject* thisObj = (!thisValue || thisValue.isUndefinedOrNull()) ? exec->dynamicGlobalObject() : thisValue.toObject(exec);
  60
  61     JSValue exception;
  62     JSValue result = exec->interpreter()->execute(program.get(), exec, scopeChain.node(), thisObj, &exception);
  63
  64     if (exception) {
  65         if (exception.isObject() && asObject(exception)->isWatchdogException())
  66             return Completion(Interrupted, exception);
  67         return Completion(Throw, exception);
  68     }
  69     return Completion(Normal, result);
  70 }
  71
  72 } // namespace JSC