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namespace Unity.UIWidgets.foundation { |
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public delegate void UIWidgetsExceptionHandler(UIWidgetsErrorDetails details); |
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public delegate void InformationCollector(StringBuilder information); |
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public delegate IEnumerable<DiagnosticsNode> DiagnosticPropertiesTransformer(IEnumerable<DiagnosticsNode> properties); |
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public delegate IEnumerable<DiagnosticsNode> InformationCollector(); |
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internal abstract class _ErrorDiagnostic : DiagnosticsProperty<List<object>> { |
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internal _ErrorDiagnostic( |
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String message, |
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DiagnosticsTreeStyle style = DiagnosticsTreeStyle.flat, |
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DiagnosticLevel level = DiagnosticLevel.info |
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) : base( |
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name: null, |
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value: new List<object>() {message}, |
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showName: false, |
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showSeparator: false, |
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defaultValue: null, |
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style: style, |
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level: level) { |
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D.assert(message != null); |
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} |
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internal _ErrorDiagnostic( |
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List<object> messageParts, |
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DiagnosticsTreeStyle style = DiagnosticsTreeStyle.flat, |
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DiagnosticLevel level = DiagnosticLevel.info |
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) : base( |
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name: null, |
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value: messageParts, |
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showName: false, |
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showSeparator: false, |
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defaultValue: null, |
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style: style, |
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level: level) { |
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D.assert(messageParts != null); |
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} |
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protected override string valueToString(TextTreeConfiguration parentConfiguration = null) { |
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return string.Join("", value); |
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} |
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} |
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internal class ErrorDescription : _ErrorDiagnostic { |
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public ErrorDescription(string message) : base(message, level: DiagnosticLevel.info) { |
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} |
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public ErrorDescription(List<object> messageParts) : base(messageParts, level: DiagnosticLevel.info) { |
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} |
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} |
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internal class ErrorSummary : _ErrorDiagnostic { |
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public ErrorSummary(string message) : base(message, level: DiagnosticLevel.summary) { |
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} |
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public ErrorSummary(List<object> messageParts) : base(messageParts, level: DiagnosticLevel.summary) { |
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} |
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} |
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internal class ErrorHint : _ErrorDiagnostic { |
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public ErrorHint(string message) : base(message, level: DiagnosticLevel.hint) { |
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} |
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public ErrorHint(List<object> messageParts) : base(messageParts, level: DiagnosticLevel.hint) { |
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} |
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} |
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public class ErrorSpacer : DiagnosticsProperty<object> { |
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public ErrorSpacer() : base( |
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} |
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} |
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public class UIWidgetsErrorDetails { |
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public class UIWidgetsErrorDetails : Diagnosticable { |
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string context = null, |
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DiagnosticsNode context = null, |
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IterableFilter<string> stackFilter = null, |
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InformationCollector informationCollector = null, |
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bool silent = false |
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this.silent = silent; |
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} |
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public static readonly List<DiagnosticPropertiesTransformer> propertiesTransformers = |
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new List<DiagnosticPropertiesTransformer>(); |
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public readonly string context; |
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public readonly DiagnosticsNode context; |
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public readonly bool silent; |
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public string exceptionAsString() { |
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return longMessage; |
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} |
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public override string ToString() { |
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var buffer = new StringBuilder(); |
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if (library.isNotEmpty() || context.isNotEmpty()) { |
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if (library.isNotEmpty()) { |
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buffer.AppendFormat("Error caught by {0}", library); |
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if (context.isNotEmpty()) { |
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buffer.Append(", "); |
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} |
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Diagnosticable _exceptionToDiagnosticable() { |
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return null; |
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} |
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public DiagnosticsNode summary { |
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get { |
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string formatException() { |
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return exceptionAsString().Split('\n')[0].TrimStart(); |
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else { |
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buffer.Append("Exception "); |
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if (foundation_.kReleaseMode) { |
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return DiagnosticsNode.message(formatException()); |
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if (context.isNotEmpty()) { |
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buffer.AppendFormat("thrown {0}", context); |
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Diagnosticable diagnosticable = _exceptionToDiagnosticable(); |
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DiagnosticsNode summary = null; |
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if (diagnosticable != null) { |
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DiagnosticPropertiesBuilder builder = new DiagnosticPropertiesBuilder(); |
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debugFillProperties(builder); |
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summary = builder.properties.First((DiagnosticsNode node) => node.level == DiagnosticLevel.summary); |
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buffer.Append(". "); |
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return summary ?? new ErrorSummary(formatException()); |
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} |
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} |
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public override void debugFillProperties(DiagnosticPropertiesBuilder properties) { |
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base.debugFillProperties(properties); |
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DiagnosticsNode verb = context != null |
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? new ErrorDescription($"thrown {new ErrorDescription($" {context}")}") |
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: new ErrorDescription(""); |
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Diagnosticable diagnosticable = _exceptionToDiagnosticable(); |
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if (exception is NullReferenceException) { |
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properties.add(new ErrorDescription($"The null value was {verb}.")); |
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buffer.Append("An error was caught. "); |
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DiagnosticsNode errorName; |
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errorName = new ErrorDescription($"{exception.GetType()}"); |
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properties.add(new ErrorDescription($"The following {errorName} was {verb}:")); |
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if (diagnosticable != null) { |
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diagnosticable.debugFillProperties(properties); |
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} |
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else { |
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string prefix = $"{exception.GetType()}"; |
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string message = exceptionAsString(); |
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if (message.StartsWith(prefix)) { |
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message = message.Substring(prefix.Length); |
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} |
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properties.add(new ErrorSummary(message)); |
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} |
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buffer.AppendLine(exceptionAsString()); |
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informationCollector(buffer); |
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properties.add(new ErrorSpacer()); |
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foreach (var diagnosticsNode in informationCollector()) { |
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properties.add(diagnosticsNode); |
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} |
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} |
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if (exception.StackTrace != null) { |
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IEnumerable<string> stackLines = exception.StackTrace.TrimEnd().Split('\n'); |
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if (stackFilter != null) { |
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stackLines = stackFilter(stackLines); |
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public override string toStringShort() { |
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return library != null ? $"Exception caught by {library}" : "Exception caught"; |
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} |
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public override string toString(DiagnosticLevel minLevel = DiagnosticLevel.info) { |
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return toDiagnosticsNode(style: DiagnosticsTreeStyle.error).toStringDeep(minLevel: minLevel); |
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} |
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public override DiagnosticsNode toDiagnosticsNode(string name = null, |
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DiagnosticsTreeStyle style = DiagnosticsTreeStyle.sparse) { |
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return new _UIWIdgetsErrorDetailsNode( |
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name: name, |
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value: this, |
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style: style |
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); |
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} |
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} |
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internal class _UIWIdgetsErrorDetailsNode : DiagnosticableNode<UIWidgetsErrorDetails> { |
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public _UIWIdgetsErrorDetailsNode( |
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string name, |
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UIWidgetsErrorDetails value, |
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DiagnosticsTreeStyle style |
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) : base( |
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name: name, |
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value: value, |
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style: style |
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) { |
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D.assert(value != null); |
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} |
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new DiagnosticPropertiesBuilder builder { |
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get { |
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DiagnosticPropertiesBuilder builder = base.builder; |
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if (builder == null) { |
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return null; |
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else { |
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stackLines = UIWidgetsError.defaultStackFilter(stackLines); |
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IEnumerable<DiagnosticsNode> properties = builder.properties; |
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foreach (DiagnosticPropertiesTransformer transformer in UIWidgetsErrorDetails.propertiesTransformers) { |
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properties = transformer(properties); |
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buffer.Append(string.Join("\n", stackLines.ToArray())); |
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return new DiagnosticPropertiesBuilder(properties.ToList()); |
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return buffer.ToString().TrimEnd(); |
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public UIWidgetsError(string message) : base(message) { |
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public UIWidgetsError(string message) { |
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string[] lines = message.Split('\n'); |
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diagnostics = new List<DiagnosticsNode>() { |
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new ErrorSummary(lines[0]) |
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}; |
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for (var i = 1; i < lines.Length; i++) { |
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diagnostics.Add(new ErrorDescription(lines[i])); |
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} |
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} |
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public UIWidgetsError(List<DiagnosticsNode> diagnostics) { |
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this.diagnostics = diagnostics; |
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D.assert(diagnostics != null && diagnostics.isNotEmpty(), () => new UIWidgetsError(new List<DiagnosticsNode>() {new ErrorSummary("Empty FlutterError")}).ToString()); |
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D.assert(diagnostics.first().level == DiagnosticLevel.summary, |
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() => new UIWidgetsError(new List<DiagnosticsNode>() { |
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new ErrorSummary("UIWidgetsError is missing a summary."), |
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new ErrorDescription("All UIWidgetsError objects should start with a short (one line) " + |
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"summary description of the problem that was detected."), |
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new DiagnosticsProperty<UIWidgetsError>("Malformed", this, expandableValue: true, showSeparator: false, style : DiagnosticsTreeStyle.whitespace), |
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new ErrorDescription( |
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"\nThis error should still help you solve your problem, " + |
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"however please also report this malformed error in the " + |
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"framework by filing a bug on GitHub:\n" + |
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" https://https://github.com/Unity-Technologies/com.unity.uiwidgets" |
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) |
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}).ToString()); |
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D.assert(() => { |
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IEnumerable<DiagnosticsNode> summaries = |
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diagnostics.Where((DiagnosticsNode node) => node.level == DiagnosticLevel.summary); |
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if (summaries.Count() > 1) { |
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return false; |
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} |
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return true; |
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}, () => { |
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IEnumerable<DiagnosticsNode> summaries = |
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diagnostics.Where((DiagnosticsNode node) => node.level == DiagnosticLevel.summary); |
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List<DiagnosticsNode> message = new List<DiagnosticsNode>() { |
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new ErrorSummary("UIWidgetsError contained multiple error summaries."), |
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new ErrorDescription( |
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"All UIWidgetsError objects should have only a single short " + |
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"(one line) summary description of the problem that was " + |
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"detected." |
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), |
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new DiagnosticsProperty<UIWidgetsError>("Malformed", this, expandableValue: true, showSeparator: false, style : DiagnosticsTreeStyle.whitespace) |
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}; |
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int i = 0; |
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foreach (DiagnosticsNode summary in summaries) { |
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message.Add(new DiagnosticsProperty<DiagnosticsNode>($"Summary {i}", summary, expandableValue : true)); |
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i += 1; |
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} |
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message.Add(new ErrorDescription( |
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"\nThis error should still help you solve your problem, " + |
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"however please also report this malformed error in the " + |
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"framework by filing a bug on GitHub:\n" + |
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" https://https://github.com/Unity-Technologies/com.unity.uiwidgets" |
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)); |
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return new UIWidgetsError(message).ToString(); |
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}); |
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public readonly List<DiagnosticsNode> diagnostics; |
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public override string Message => ToString(); |
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static int _errorCount = 0; |
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public static void resetErrorCount() { |
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_errorCount = 0; |
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} |
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const int wrapWidth = 100; |
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public static void dumpErrorToConsole(UIWidgetsErrorDetails details) { |
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dumpErrorToConsole(details, forceReport: false); |
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} |
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return; |
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} |
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D.logError(details.ToString(), details.exception); |
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if (_errorCount == 0 || forceReport) { |
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D.logError(new TextTreeRenderer( |
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wrapWidth: wrapWidth, |
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wrapWidthProperties: wrapWidth, |
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maxDescendentsTruncatableNode: 5).render( |
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details.toDiagnosticsNode(style: DiagnosticsTreeStyle.error)).TrimEnd(), details.exception); |
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} |
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D.logError($"Another exception was thrown: ${details.summary}"); |
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_errorCount += 1; |
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} |
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public static IEnumerable<string> defaultStackFilter(IEnumerable<string> frames) { |
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public static void reportError(UIWidgetsErrorDetails details) { |
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D.assert(details != null); |
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D.assert(details.exception != null); |
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if (onError != null) { |
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onError(details); |
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public void debugFillProperties(DiagnosticPropertiesBuilder properties) { |
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foreach (var diagnosticsNode in diagnostics) |
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{ |
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properties.add(diagnosticsNode); |
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} |
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internal abstract class _ErrorDiagnostic : DiagnosticsProperty<List<object>> { |
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/// This constructor provides a reliable hook for a kernel transformer to find
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/// error messages that need to be rewritten to include object references for
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/// interactive display of errors.
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internal _ErrorDiagnostic( |
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String message, |
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DiagnosticsTreeStyle style = DiagnosticsTreeStyle.sparse, // DiagnosticsTreeStyle.flat
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DiagnosticLevel level = DiagnosticLevel.info |
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) : base( |
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name: null, |
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value: new List<object>() {message}, |
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showName: false, |
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showSeparator: false, |
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defaultValue: null, |
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style: style, |
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level: level) { |
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D.assert(message != null); |
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} |
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public string toStringShort() => "UIWidgetsError"; |
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/// In debug builds, a kernel transformer rewrites calls to the default
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/// constructors for [ErrorSummary], [ErrorDetails], and [ErrorHint] to use
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/// this constructor.
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//
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// ```dart
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// _ErrorDiagnostic('Element $element must be $color')
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// ```
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// Desugars to:
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// ```dart
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// _ErrorDiagnostic.fromParts(<Object>['Element ', element, ' must be ', color])
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// ```
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//
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// Slightly more complex case:
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// ```dart
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// _ErrorDiagnostic('Element ${element.runtimeType} must be $color')
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// ```
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// Desugars to:
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//```dart
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// _ErrorDiagnostic.fromParts(<Object>[
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// 'Element ',
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// DiagnosticsProperty(null, element, description: element.runtimeType?.toString()),
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// ' must be ',
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// color,
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// ])
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// ```
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internal _ErrorDiagnostic( |
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List<object> messageParts, |
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DiagnosticsTreeStyle style = DiagnosticsTreeStyle.sparse, |
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DiagnosticLevel level = DiagnosticLevel.info |
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) : base( |
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name: null, |
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value: messageParts, |
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showName: false, |
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showSeparator: false, |
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defaultValue: null, |
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style: style, |
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level: level) { |
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D.assert(messageParts != null); |
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public override string ToString() { |
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TextTreeRenderer renderer = new TextTreeRenderer(wrapWidth: 400000000); |
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return string.Join("\n", diagnostics.Select((DiagnosticsNode node) => renderer.render(node).TrimEnd())); |
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protected override string valueToString(TextTreeConfiguration parentConfiguration = null) { |
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return String.Join("", value); |
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} |
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} |
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internal class ErrorDescription : _ErrorDiagnostic { |
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/// A lint enforces that this constructor can only be called with a string
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/// literal to match the limitations of the Dart Kernel transformer that
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/// optionally extracts out objects referenced using string interpolation in
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/// the message passed in.
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///
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/// The message will display with the same text regardless of whether the
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/// kernel transformer is used. The kernel transformer is required so that
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/// debugging tools can provide interactive displays of objects described by
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/// the error.
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public ErrorDescription(string message) : base(message, level: DiagnosticLevel.info) { |
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} |
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/// Calls to the default constructor may be rewritten to use this constructor
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/// in debug mode using a kernel transformer.
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// ignore: unused_element
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public ErrorDescription(List<object> messageParts) : base(messageParts, level: DiagnosticLevel.info) { |
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public static void reportError(UIWidgetsErrorDetails details) { |
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D.assert(details != null); |
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D.assert(details.exception != null); |
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|
if (onError != null) { |
|
|
|
onError(details); |
|
|
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
} |
xingweizhu
4 年前