private bool TryGetErrorProperty <T>(JavaScriptValueSafeHandle error, string propertyName, out T value)
{
JsErrorCode innerError;
innerError = LibChakraCore.JsCreatePropertyId(propertyName, (ulong)propertyName.Length, out JavaScriptPropertyIdSafeHandle propertyHandle);
innerError = LibChakraCore.JsHasProperty(error, propertyHandle, out bool hasProperty);
if (hasProperty == true)
{
innerError = LibChakraCore.JsGetProperty(error, propertyHandle, out JavaScriptValueSafeHandle propertyValue);
innerError = LibChakraCore.JsGetValueType(propertyValue, out JsValueType propertyType);
switch (propertyType)
{
case JsValueType.Number:
innerError = LibChakraCore.JsNumberToDouble(propertyValue, out double doubleValue);
value = (T)Convert.ChangeType(doubleValue, typeof(T));
return(true);
case JsValueType.String:
var strValue = Helpers.GetStringUtf8(propertyValue, releaseHandle: true);
value = (T)Convert.ChangeType(strValue, typeof(T));
return(true);
default:
value = default(T);
return(false);
}
}
value = default(T);
return(false);
}
/// <summary>
/// Initializes a new instance of the <see cref="JsScriptException"/> class.
/// </summary>
/// <param name="code">The error code returned.</param>
/// <param name="error">The JavaScript error object.</param>
/// <param name="message">The error message.</param>
public JsScriptException(JsErrorCode code, JavaScriptValueSafeHandle error, string message) :
base(code, message)
{
m_error = error;
m_message = message;
//Don't use our helper errors class in order to prevent recursive errors.
JsErrorCode innerError;
//Get the error object type
innerError = LibChakraCore.JsGetValueType(error, out JsValueType errorType);
switch (errorType)
{
case JsValueType.Object:
if (TryGetErrorProperty(error, ColumnNumberPropertyName, out int metadataColumnValue))
{
ColumnNumber = metadataColumnValue;
}
if (TryGetErrorProperty(error, LineNumberPropertyName, out int metadataLineValue))
{
LineNumber = metadataLineValue;
}
if (TryGetErrorProperty(error, "source", out string metadataScriptSourceValue))
{
ScriptSource = metadataScriptSourceValue;
}
if (TryGetErrorProperty(error, "url", out string metadataUrlValue))
{
Name = metadataUrlValue;
}
break;
case JsValueType.Error:
//Get the message of the Script Error.
if (TryGetErrorProperty(error, MessagePropertyName, out string errrorMessageValue))
{
m_message = errrorMessageValue;
}
if (TryGetErrorProperty(error, ColumnNumberPropertyName, out int errorColumnValue))
{
ColumnNumber = errorColumnValue;
}
if (TryGetErrorProperty(error, LineNumberPropertyName, out int errorLineValue))
{
LineNumber = errorLineValue;
}
if (TryGetErrorProperty(error, NamePropertyName, out string errorNameValue))
{
Name = errorNameValue;
}
break;
case JsValueType.String:
m_message = Helpers.GetStringUtf8(error);
break;
}
}
