public void JsFunctionsThatThrowCanBeCaught()
{
var script = @"
export default () => { throw new Error('That is quite illogical, captain.'); };
";
using (var rt = BaristaRuntimeFactory.CreateRuntime())
{
using (var ctx = rt.CreateContext())
{
using (ctx.Scope())
{
var fn = ctx.EvaluateModule <JsFunction>(script);
JsScriptException ex = null;
try
{
var result = fn.Call();
}
catch (JsScriptException invokeException)
{
ex = invokeException;
}
Assert.NotNull(ex);
Assert.Equal("That is quite illogical, captain.", ex.Message);
}
}
}
}
public void JsNativeFunctionsThatThrowCanBeHandled()
{
using (var rt = BaristaRuntimeFactory.CreateRuntime())
{
using (var ctx = rt.CreateContext())
{
using (ctx.Scope())
{
var fnBoom = ctx.CreateFunction(new Action(() =>
{
throw new InvalidOperationException("A hole has been torn in the universe.");
}));
Assert.NotNull(fnBoom);
JsScriptException ex = null;
try
{
var result = fnBoom.Call();
}
catch (JsScriptException invokeException)
{
ex = invokeException;
}
Assert.NotNull(ex);
Assert.Equal("A hole has been torn in the universe.", ex.Message);
}
}
}
}
/// <summary>
/// Writes a detailed error message to the buffer
/// </summary>
/// <param name="buffer">Instance of <see cref="StringBuilder"/></param>
/// <param name="jsScriptException">JS script exception</param>
private static void WriteScriptErrorDetails(StringBuilder buffer,
JsScriptException jsScriptException)
{
if (!string.IsNullOrWhiteSpace(jsScriptException.Type))
{
buffer.AppendFormatLine("{0}: {1}", Strings.ErrorDetails_Type,
jsScriptException.Type);
}
if (!string.IsNullOrWhiteSpace(jsScriptException.DocumentName))
{
buffer.AppendFormatLine("{0}: {1}", Strings.ErrorDetails_DocumentName,
jsScriptException.DocumentName);
}
if (jsScriptException.LineNumber > 0)
{
buffer.AppendFormatLine("{0}: {1}", Strings.ErrorDetails_LineNumber,
jsScriptException.LineNumber.ToString(CultureInfo.InvariantCulture));
}
if (jsScriptException.ColumnNumber > 0)
{
buffer.AppendFormatLine("{0}: {1}", Strings.ErrorDetails_ColumnNumber,
jsScriptException.ColumnNumber.ToString(CultureInfo.InvariantCulture));
}
if (!string.IsNullOrWhiteSpace(jsScriptException.SourceFragment))
{
buffer.AppendFormatLine("{0}: {1}", Strings.ErrorDetails_SourceFragment,
jsScriptException.SourceFragment);
}
}
/// <summary>
/// Generates a detailed error message
/// </summary>
/// <param name="jsScriptException">JS script exception</param>
/// <param name="omitMessage">Flag for whether to omit message</param>
/// <returns>Detailed error message</returns>
public static string GenerateErrorDetails(JsScriptException jsScriptException,
bool omitMessage = false)
{
if (jsScriptException == null)
{
throw new ArgumentNullException(nameof(jsScriptException));
}
var stringBuilderPool = StringBuilderPool.Shared;
StringBuilder detailsBuilder = stringBuilderPool.Rent();
WriteCommonErrorDetails(detailsBuilder, jsScriptException, omitMessage);
WriteScriptErrorDetails(detailsBuilder, jsScriptException);
var jsRuntimeException = jsScriptException as JsRuntimeException;
if (jsRuntimeException != null)
{
WriteRuntimeErrorDetails(detailsBuilder, jsRuntimeException);
}
detailsBuilder.TrimEnd();
string errorDetails = detailsBuilder.ToString();
stringBuilderPool.Return(detailsBuilder);
return(errorDetails);
}
public static string Format(JsScriptException jsScriptException)
{
return(GenerateErrorDetails(jsScriptException));
}
