/// <summary>
/// Initializes a new instance of the <see cref="LayoutScriptException"/> class.
/// </summary>
/// <typeparam name="T">The type of <see cref="LayoutScriptException"/> to create.</typeparam>
/// <param name="layout">The <see cref="LayoutScript"/> that caused the exception.</param>
/// <param name="innerException">The <see cref="Exception"/> that caused this exception.</param>
/// <param name="srcElem">The <see cref="ISourceEntity"/> that caused the exception.</param>
/// <param name="msg">A message that describes the error.</param>
/// <returns>The new <see cref="LayoutScriptException"/> instance.</returns>
internal static T Create <T>(LayoutScript layout, Exception innerException, ISourceEntity srcElem, string msg)
where T : LayoutScriptException
{
string detailedMsg = BuildDetailedMessage(msg, innerException, layout, srcElem);
return(CreateException <T>(layout, msg, detailedMsg, innerException, srcElem));
}
/// <typeparam name="T">The type of <see cref="LayoutScriptException"/> to create.</typeparam>
/// <param name="layout">The <see cref="LayoutScript"/> whose XML data caused the exception.</param>
/// <param name="msg">A brief message that describes the error.</param>
/// <param name="detailedMsg">A detailed message that describes the error.</param>
/// <param name="innerException">The <see cref="Exception"/> that caused this exception.</param>
/// <param name="srcElem">The <see cref="ISourceEntity"/> that caused the exception.</param>
/// <returns></returns>
private static T CreateException <T>(
LayoutScript layout, string msg, string detailedMsg, Exception innerException, ISourceEntity srcElem)
where T : LayoutScriptException
{
if (srcElem != null && srcElem.LineNumber > 0 && srcElem.LinePosition > 0)
{
msg += string.Format(" Line {0}, position {1}.", srcElem.LineNumber, srcElem.LinePosition);
}
T ex = (T)Activator.CreateInstance(
typeof(T),
BindingFlags.NonPublic | BindingFlags.Instance,
null,
new object[] { msg, innerException },
CultureInfo.InvariantCulture);
ex.LayoutFile = layout;
if (!string.IsNullOrWhiteSpace(detailedMsg))
{
ex.DetailedMessage = detailedMsg;
}
if (srcElem != null)
{
ex.LineNumber = srcElem.LineNumber;
ex.LinePosition = srcElem.LinePosition;
}
return(ex);
}
/// <summary>
/// Initializes a new instance of the <see cref="LayoutScriptException"/> class.
/// </summary>
/// <typeparam name="T">The type of <see cref="LayoutScriptException"/> to create.</typeparam>
/// <param name="layout">The <see cref="LayoutScript"/> that caused the exception.</param>
/// <param name="srcElem">The <see cref="ISourceEntity"/> that caused the exception.</param>
/// <param name="msgFmt">A composite format string for the message that describes the error.</param>
/// <param name="fmtArgs">An object array that contains zero or more objects to format.</param>
/// <returns>The new <see cref="LayoutScriptException"/> instance.</returns>
internal static T Create <T>(LayoutScript layout, ISourceEntity srcElem, string msgFmt, params object[] fmtArgs)
where T : LayoutScriptException
{
string msg;
string detailedMsg;
msg = string.Format(msgFmt, fmtArgs);
detailedMsg = BuildDetailedMessage(msg, null, layout, srcElem);
return(CreateException <T>(layout, msg, detailedMsg, null, srcElem));
}
/// <summary>
/// Creates a descriptive and easy-to-read error message.
/// </summary>
/// <param name="exceptionMessage">A message describing the error.</param>
/// <param name="innerException">The <see cref="Exception"/> that caused the error.</param>
/// <param name="layout">The <see cref="LayoutScript"/> that caused the error.</param>
/// /// <param name="srcElem">The <see cref="ISourceEntity"/> that caused the error.</param>
/// <returns>The newly-created error message.</returns>
private static string BuildDetailedMessage(
string exceptionMessage, Exception innerException, LayoutScript layout, ISourceEntity srcElem)
{
if (exceptionMessage == null)
{
exceptionMessage = "";
}
exceptionMessage = exceptionMessage.Trim();
bool hasExceptionMessage = !string.IsNullOrEmpty(exceptionMessage);
bool hasInnerException = innerException != null;
bool hasLayout = layout != null;
bool hasPath = hasLayout && layout.SourcePath != null;
bool hasLineInfo = srcElem != null && srcElem.LineNumber > 0 && srcElem.LinePosition > 0;
string msg = "";
if (hasExceptionMessage)
{
msg = exceptionMessage;
}
if (hasInnerException)
{
msg += Environment.NewLine + "Caused by:";
msg += Environment.NewLine + " " + innerException.GetType().Name + ": ";
msg += innerException.Message.Replace(Environment.NewLine, Environment.NewLine + " ");
}
if (hasLayout && hasPath)
{
msg += Environment.NewLine + "In Layout:";
if (hasPath)
{
msg += Environment.NewLine + " Path: " + layout.SourcePath;
}
}
if (hasLineInfo)
{
msg += Environment.NewLine + "Occurred at:";
msg += Environment.NewLine + " Line: " + srcElem.LineNumber;
msg += Environment.NewLine + " Position: " + srcElem.LinePosition;
}
return(msg);
}
/// <summary>
/// Executes a <see cref="LayoutScript"/> on the binary data.
/// <param name="script">The layout script to run.</param>
/// <param name="scriptOutputWriter">A <see cref="TextWriter"/> to which
/// textual output from the script will be written.</param>
/// </summary>
public void RunLayoutScript(LayoutScript script, TextWriter scriptOutputWriter)
{
LayoutInterpreter interpreter = new LayoutInterpreter(script, scriptOutputWriter);
interpreter.Execute(fileStructure.Symbol, this);
}
/// <summary>
/// Executes a <see cref="LayoutScript"/> on the binary data.
/// Any textual output from the script will be written to
/// <see cref="Console.Out"/>.
/// <param name="script">The layout script to run.</param>
/// </summary>
public void RunLayoutScript(LayoutScript script)
{
RunLayoutScript(script, Console.Out);
}
