/// <summary>
/// Filters a error location items
/// </summary>
/// <param name="errorLocationItems">An array of <see cref="ErrorLocationItem"/> instances</param>
private static ErrorLocationItem[] FilterErrorLocationItems(ErrorLocationItem[] errorLocationItems)
{
if (errorLocationItems.Length == 0)
{
return(errorLocationItems);
}
int excessErrorLocationItemIndex = 0;
foreach (ErrorLocationItem item in errorLocationItems)
{
string documentName = item.DocumentName;
string functionName = item.FunctionName;
if (documentName == "vm.js" ||
documentName == GENERATED_FUNCTION_CALL_FILE_NAME ||
(documentName == "anonymous" && functionName == "callFunction"))
{
break;
}
excessErrorLocationItemIndex++;
}
var processedErrorLocationItems = new ErrorLocationItem[excessErrorLocationItemIndex];
Array.Copy(errorLocationItems, processedErrorLocationItems, excessErrorLocationItemIndex);
return(processedErrorLocationItems);
}
/// <summary>
/// Parses a string representation of the script error location to produce an array of
/// <see cref="ErrorLocationItem"/> instances
/// </summary>
/// <param name="errorLocation">String representation of the script error location</param>
/// <returns>An array of <see cref="ErrorLocationItem"/> instances</returns>
public static ErrorLocationItem[] ParseErrorLocation(string errorLocation)
{
if (string.IsNullOrWhiteSpace(errorLocation))
{
return(new ErrorLocationItem[0]);
}
var errorLocationItems = new List <ErrorLocationItem>();
string[] lines = errorLocation.SplitToLines();
int lineCount = lines.Length;
for (int lineIndex = 0; lineIndex < lineCount; lineIndex++)
{
string line = lines[lineIndex];
if (line.Length == 0)
{
continue;
}
Match lineMatch = _errorLocationLineRegex.Match(line);
if (lineMatch.Success)
{
GroupCollection lineGroups = lineMatch.Groups;
Group lineNumberGroup = lineGroups["lineNumber"];
Group columnNumberGroup = lineGroups["columnNumber"];
var errorLocationItem = new ErrorLocationItem
{
FunctionName = lineGroups["functionName"].Value,
DocumentName = lineGroups["documentName"].Value,
LineNumber = lineNumberGroup.Success ? int.Parse(lineNumberGroup.Value) : 0,
ColumnNumber = columnNumberGroup.Success ? int.Parse(columnNumberGroup.Value) : 0,
SourceFragment = lineGroups["sourceFragment"].Value
};
errorLocationItems.Add(errorLocationItem);
}
else
{
Debug.WriteLine(string.Format(CoreStrings.Runtime_InvalidErrorLocationLineFormat, line));
return(new ErrorLocationItem[0]);
}
}
return(errorLocationItems.ToArray());
}
private static WrapperException WrapScriptEngineException(OriginalException originalException)
{
WrapperException wrapperException;
string message = originalException.Message;
string messageWithErrorLocation = originalException.ErrorDetails;
string description = message;
string type = string.Empty;
string documentName = string.Empty;
int lineNumber = 0;
int columnNumber = 0;
string callStack = string.Empty;
string sourceFragment = string.Empty;
if (originalException.IsFatal)
{
if (message == "The V8 runtime has exceeded its memory limit")
{
wrapperException = new WrapperRuntimeException(message, EngineName, EngineVersion,
originalException);
}
else
{
wrapperException = new WrapperFatalException(message, EngineName, EngineVersion,
originalException);
}
}
else
{
Match messageWithTypeMatch = _errorMessageWithTypeRegex.Match(message);
if (messageWithTypeMatch.Success)
{
GroupCollection messageWithTypeGroups = messageWithTypeMatch.Groups;
type = messageWithTypeGroups["type"].Value;
description = messageWithTypeGroups["description"].Value;
var errorLocationItems = new ErrorLocationItem[0];
if (message.Length < messageWithErrorLocation.Length)
{
string errorLocation = messageWithErrorLocation
.TrimStart(message)
.TrimStart(new char[] { '\n', '\r' })
;
errorLocationItems = JsErrorHelpers.ParseErrorLocation(errorLocation);
if (errorLocationItems.Length > 0)
{
ErrorLocationItem firstErrorLocationItem = errorLocationItems[0];
documentName = firstErrorLocationItem.DocumentName;
lineNumber = firstErrorLocationItem.LineNumber;
columnNumber = firstErrorLocationItem.ColumnNumber;
string sourceLine = firstErrorLocationItem.SourceFragment;
sourceFragment = TextHelpers.GetTextFragmentFromLine(sourceLine, columnNumber);
firstErrorLocationItem.SourceFragment = sourceFragment;
}
}
WrapperScriptException wrapperScriptException;
if (type == JsErrorType.Syntax)
{
message = JsErrorHelpers.GenerateScriptErrorMessage(type, description, documentName,
lineNumber, columnNumber, sourceFragment);
wrapperScriptException = new WrapperCompilationException(message, EngineName, EngineVersion,
originalException);
}
else
{
callStack = JsErrorHelpers.StringifyErrorLocationItems(errorLocationItems, true);
string callStackWithSourceFragment = JsErrorHelpers.StringifyErrorLocationItems(
errorLocationItems);
message = JsErrorHelpers.GenerateScriptErrorMessage(type, description,
callStackWithSourceFragment);
wrapperScriptException = new WrapperRuntimeException(message, EngineName, EngineVersion,
originalException)
{
CallStack = callStack
};
}
wrapperScriptException.Type = type;
wrapperScriptException.DocumentName = documentName;
wrapperScriptException.LineNumber = lineNumber;
wrapperScriptException.ColumnNumber = columnNumber;
wrapperScriptException.SourceFragment = sourceFragment;
wrapperException = wrapperScriptException;
}
else
{
wrapperException = new WrapperException(message, EngineName, EngineVersion,
originalException);
}
}
wrapperException.Description = description;
return(wrapperException);
}
private WrapperException WrapInvocationException(InvocationException originalException)
{
WrapperException wrapperException;
string message = originalException.Message;
string description = string.Empty;
if (_timeoutErrorMessage.IsMatch(message))
{
message = CoreStrings.Runtime_ScriptTimeoutExceeded;
description = message;
var wrapperTimeoutException = new WrapperTimeoutException(message, EngineName, _engineVersion,
originalException)
{
Description = description
};
return(wrapperTimeoutException);
}
string documentName = string.Empty;
int lineNumber = 0;
int columnNumber = 0;
string sourceLine = string.Empty;
Match detailsMatch = _errorDetailsRegex.Match(message);
int detailsLength = 0;
if (detailsMatch.Success)
{
GroupCollection detailsGroups = detailsMatch.Groups;
description = detailsGroups["description"].Value;
documentName = detailsGroups["documentName"].Success ?
detailsGroups["documentName"].Value : string.Empty;
lineNumber = detailsGroups["lineNumber"].Success ?
int.Parse(detailsGroups["lineNumber"].Value) : 0;
columnNumber = NodeJsErrorHelpers.GetColumnCountFromLine(detailsGroups["pointer"].Value);
sourceLine = detailsGroups["sourceLine"].Value;
detailsLength = detailsMatch.Length;
}
message = detailsLength > 0 ? message.Substring(detailsLength) : message;
Match messageWithTypeMatch = _errorMessageWithTypeRegex.Match(message);
if (messageWithTypeMatch.Success)
{
GroupCollection messageWithTypeGroups = messageWithTypeMatch.Groups;
string type = messageWithTypeGroups["type"].Value;
description = messageWithTypeGroups["description"].Value;
string sourceFragment = TextHelpers.GetTextFragmentFromLine(sourceLine, columnNumber);
WrapperScriptException wrapperScriptException;
if (type == JsErrorType.Syntax)
{
message = JsErrorHelpers.GenerateScriptErrorMessage(type, description, documentName,
lineNumber, columnNumber, sourceFragment);
wrapperScriptException = new WrapperCompilationException(message, EngineName, _engineVersion,
originalException);
}
else if (type == "UsageError")
{
wrapperException = new WrapperUsageException(description, EngineName, _engineVersion,
originalException);
wrapperException.Description = description;
return(wrapperException);
}
else
{
var errorLocationItems = new ErrorLocationItem[0];
int messageLength = message.Length;
int messageWithTypeLength = messageWithTypeMatch.Length;
if (messageWithTypeLength < messageLength)
{
string errorLocation = message.Substring(messageWithTypeLength);
errorLocationItems = NodeJsErrorHelpers.ParseErrorLocation(errorLocation);
errorLocationItems = FilterErrorLocationItems(errorLocationItems);
if (errorLocationItems.Length > 0)
{
ErrorLocationItem firstErrorLocationItem = errorLocationItems[0];
documentName = firstErrorLocationItem.DocumentName;
lineNumber = firstErrorLocationItem.LineNumber;
columnNumber = firstErrorLocationItem.ColumnNumber;
firstErrorLocationItem.SourceFragment = sourceFragment;
}
}
string callStack = JsErrorHelpers.StringifyErrorLocationItems(errorLocationItems, true);
string callStackWithSourceFragment = JsErrorHelpers.StringifyErrorLocationItems(
errorLocationItems);
message = JsErrorHelpers.GenerateScriptErrorMessage(type, description,
callStackWithSourceFragment);
wrapperScriptException = new WrapperRuntimeException(message, EngineName, _engineVersion,
originalException)
{
CallStack = callStack
};
}
wrapperScriptException.Type = type;
wrapperScriptException.DocumentName = documentName;
wrapperScriptException.LineNumber = lineNumber;
wrapperScriptException.ColumnNumber = columnNumber;
wrapperScriptException.SourceFragment = sourceFragment;
wrapperException = wrapperScriptException;
}
else
{
wrapperException = new WrapperException(message, EngineName, _engineVersion,
originalException);
}
wrapperException.Description = description;
return(wrapperException);
}
