qt/api/qscriptengine_p.cpp

   1 /*
   2     Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
   3
   4     This library is free software; you can redistribute it and/or
   5     modify it under the terms of the GNU Library General Public
   6     License as published by the Free Software Foundation; either
   7     version 2 of the License, or (at your option) any later version.
   8
   9     This library is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12     Library General Public License for more details.
  13
  14     You should have received a copy of the GNU Library General Public License
  15     along with this library; see the file COPYING.LIB.  If not, write to
  16     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17     Boston, MA 02110-1301, USA.
  18 */
  19
  20 #include "config.h"
  21
  22 #include "qscriptengine_p.h"
  23
  24 #include "qscriptvalue_p.h"
  25
  26 /*!
  27     Constructs a default QScriptEnginePrivate object, a new global context will be created.
  28     \internal
  29 */
  30 QScriptEnginePrivate::QScriptEnginePrivate(const QScriptEngine* engine)
  31     : q_ptr(const_cast<QScriptEngine*>(engine))
  32     , m_context(JSGlobalContextCreate(0))
  33 {
  34 }
  35
  36 QScriptEnginePrivate::~QScriptEnginePrivate()
  37 {
  38     JSGlobalContextRelease(m_context);
  39 }
  40
  41 /*!
  42     Evaluates program and returns the result of the evaluation.
  43     \internal
  44 */
  45 QScriptValuePrivate* QScriptEnginePrivate::evaluate(const QString& program, const QString& fileName, int lineNumber)
  46 {
  47     JSStringRef script = QScriptConverter::toString(program);
  48     JSStringRef file = QScriptConverter::toString(fileName);
  49     JSValueRef exception;
  50     JSValueRef result = JSEvaluateScript(m_context, script, /* Global Object */ 0, file, lineNumber, &exception);
  51     if (!result)
  52         return new QScriptValuePrivate(this, exception); // returns an exception
  53     return new QScriptValuePrivate(this, result);
  54 }