/// <summary>
/// Constructs instance of MSIE JavaScript engine
/// </summary>
/// <param name="settings">JavaScript engine settings</param>
/// <exception cref="MsieJavaScriptEngine.JsEngineLoadException">Failed to load a JavaScript engine.</exception>
/// <exception cref="System.NotSupportedException">Selected mode of JavaScript engine is not supported.</exception>
public MsieJsEngine(JsEngineSettings settings)
{
JsEngineMode engineMode = settings.EngineMode;
JsEngineMode processedEngineMode = engineMode;
if (engineMode == JsEngineMode.Auto)
{
if (ChakraJsRtJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.ChakraJsRt;
}
else if (ChakraActiveScriptJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.ChakraActiveScript;
}
else if (ClassicActiveScriptJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.Classic;
}
else
{
throw new JsEngineLoadException(Strings.Runtime_JsEnginesNotFound);
}
}
switch (processedEngineMode)
{
case JsEngineMode.ChakraJsRt:
_jsEngine = new ChakraJsRtJsEngine();
break;
case JsEngineMode.ChakraActiveScript:
_jsEngine = new ChakraActiveScriptJsEngine();
break;
case JsEngineMode.Classic:
_jsEngine = new ClassicActiveScriptJsEngine(settings.UseEcmaScript5Polyfill,
settings.UseJson2Library);
break;
default:
throw new NotSupportedException(
string.Format(Strings.Runtime_JsEngineModeNotSupported, processedEngineMode));
}
}
/// <summary>
/// Constructs instance of MSIE JavaScript engine
/// </summary>
/// <param name="settings">JavaScript engine settings</param>
/// <exception cref="MsieJavaScriptEngine.JsEngineLoadException">Failed to load a JavaScript engine.</exception>
/// <exception cref="System.NotSupportedException">Selected mode of JavaScript engine is not supported.</exception>
public MsieJsEngine(JsEngineSettings settings)
{
JsEngineMode engineMode = settings.EngineMode;
JsEngineMode processedEngineMode = engineMode;
if (engineMode == JsEngineMode.Auto)
{
if (ChakraEdgeJsRtJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.ChakraEdgeJsRt;
}
else if (ChakraIeJsRtJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.ChakraIeJsRt;
}
#if !NETSTANDARD1_3
else if (ChakraActiveScriptJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.ChakraActiveScript;
}
else if (ClassicActiveScriptJsEngine.IsSupported())
{
processedEngineMode = JsEngineMode.Classic;
}
#endif
else
{
throw new JsEngineLoadException(
#if NETSTANDARD1_3
NetCoreStrings.Runtime_JsEnginesNotFound
#else
NetFrameworkStrings.Runtime_JsEnginesNotFound
#endif
);
}
}
lock (_creationSynchronizer)
{
JsEngineMode previousMode = _currentMode;
switch (processedEngineMode)
{
case JsEngineMode.ChakraEdgeJsRt:
if (previousMode != JsEngineMode.ChakraIeJsRt &&
previousMode != JsEngineMode.ChakraActiveScript)
{
_jsEngine = new ChakraEdgeJsRtJsEngine(settings.EnableDebugging);
}
else if (previousMode == JsEngineMode.ChakraIeJsRt)
{
throw new JsEngineLoadException(
string.Format(
CommonStrings.Runtime_JsEnginesConflictInProcess,
JsEngineModeHelpers.GetModeName(processedEngineMode),
JsEngineModeHelpers.GetModeName(previousMode)
)
);
}
else if (previousMode == JsEngineMode.ChakraActiveScript)
{
throw new JsEngineLoadException(
string.Format(
CommonStrings.Runtime_JsEnginesConflictInProcess,
JsEngineModeHelpers.GetModeName(processedEngineMode),
JsEngineModeHelpers.GetModeName(previousMode)
)
);
}
break;
case JsEngineMode.ChakraIeJsRt:
if (previousMode != JsEngineMode.ChakraEdgeJsRt)
{
_jsEngine = new ChakraIeJsRtJsEngine(settings.EnableDebugging);
}
else
{
throw new JsEngineLoadException(
string.Format(
CommonStrings.Runtime_JsEnginesConflictInProcess,
JsEngineModeHelpers.GetModeName(processedEngineMode),
JsEngineModeHelpers.GetModeName(previousMode)
)
);
}
break;
case JsEngineMode.ChakraActiveScript:
#if !NETSTANDARD1_3
if (previousMode != JsEngineMode.ChakraEdgeJsRt)
{
_jsEngine = new ChakraActiveScriptJsEngine();
}
else
{
throw new JsEngineLoadException(
string.Format(
CommonStrings.Runtime_JsEnginesConflictInProcess,
JsEngineModeHelpers.GetModeName(processedEngineMode),
JsEngineModeHelpers.GetModeName(previousMode)
)
);
}
break;
#else
throw new NotSupportedException(
string.Format(NetCoreStrings.Runtime_JsEngineModeNotCompatibleWithNetCore, processedEngineMode));
#endif
case JsEngineMode.Classic:
#if !NETSTANDARD1_3
_jsEngine = new ClassicActiveScriptJsEngine(settings.UseEcmaScript5Polyfill,
settings.UseJson2Library);
break;
#else
throw new NotSupportedException(
string.Format(NetCoreStrings.Runtime_JsEngineModeNotCompatibleWithNetCore, processedEngineMode));
#endif
default:
throw new NotSupportedException(
string.Format(CommonStrings.Runtime_JsEngineModeNotSupported, processedEngineMode));
}
_currentMode = processedEngineMode;
}
}
