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 "WTFThreadData.h"
  33 #include <stdio.h>
  34
  35 namespace JSC {
  36
  37 Completion checkSyntax(ExecState* exec, const SourceCode& source)
  38 {
  39     JSLock lock(exec);
  40     ASSERT(exec->globalData().identifierTable == wtfThreadData().currentIdentifierTable());
  41
  42     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  43     JSObject* error = program->checkSyntax(exec);
  44     if (error)
  45         return Completion(Throw, error);
  46
  47     return Completion(Normal);
  48 }
  49
  50 Completion evaluate(ExecState* exec, ScopeChainNode* scopeChain, const SourceCode& source, JSValue thisValue)
  51 {
  52     JSLock lock(exec);
  53     ASSERT(exec->globalData().identifierTable == wtfThreadData().currentIdentifierTable());
  54
  55     ProgramExecutable* program = ProgramExecutable::create(exec, source);
  56     if (!program) {
  57         JSValue exception = exec->globalData().exception;
  58         exec->globalData().exception = JSValue();
  59         return Completion(Throw, exception);
  60     }
  61
  62     JSObject* thisObj = (!thisValue || thisValue.isUndefinedOrNull()) ? exec->dynamicGlobalObject() : thisValue.toObject(exec);
  63
  64     JSValue result = exec->interpreter()->execute(program, exec, scopeChain, thisObj);
  65
  66     if (exec->hadException()) {
  67         JSValue exception = exec->exception();
  68         exec->clearException();
  69
  70         ComplType exceptionType = Throw;
  71         if (exception.isObject())
  72             exceptionType = asObject(exception)->exceptionType();
  73         return Completion(exceptionType, exception);
  74     }
  75     return Completion(Normal, result);
  76 }
  77
  78 } // namespace JSC