Konstantin Shcheglov
c90ca298ed
R=brianwilkerson@google.com Change-Id: I1498c70c1c9d7cd43760ca2c620a3fb819a0c823 Reviewed-on: https://dart-review.googlesource.com/47903 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
100 lines
2.5 KiB
Dart
100 lines
2.5 KiB
Dart
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library analyzer.exception.exception;
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/**
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* An exception that occurred during the analysis of one or more sources.
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*/
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class AnalysisException implements Exception {
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/**
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* The message that explains why the exception occurred.
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*/
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final String message;
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/**
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* The exception that caused this exception, or `null` if this exception was
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* not caused by another exception.
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*/
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final CaughtException cause;
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/**
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* Initialize a newly created exception to have the given [message] and
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* [cause].
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*/
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AnalysisException([this.message = 'Exception', this.cause = null]);
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String toString() {
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StringBuffer buffer = new StringBuffer();
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buffer.write('$runtimeType: ');
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buffer.writeln(message);
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if (cause != null) {
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buffer.write('Caused by ');
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cause._writeOn(buffer);
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}
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return buffer.toString();
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}
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}
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/**
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* An exception that was caught and has an associated stack trace.
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*/
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class CaughtException implements Exception {
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/**
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* The exception that was caught.
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*/
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final Object exception;
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/**
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* The stack trace associated with the exception.
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*/
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StackTrace stackTrace;
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/**
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* Initialize a newly created caught exception to have the given [exception]
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* and [stackTrace].
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*/
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CaughtException(this.exception, stackTrace) {
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if (stackTrace == null) {
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try {
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throw this;
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} catch (_, st) {
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stackTrace = st;
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}
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}
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this.stackTrace = stackTrace;
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}
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@override
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String toString() {
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StringBuffer buffer = new StringBuffer();
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_writeOn(buffer);
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return buffer.toString();
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}
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/**
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* Write a textual representation of the caught exception and its associated
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* stack trace.
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*/
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void _writeOn(StringBuffer buffer) {
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if (exception is AnalysisException) {
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AnalysisException analysisException = exception;
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buffer.writeln(analysisException.message);
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if (stackTrace != null) {
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buffer.writeln(stackTrace.toString());
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}
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CaughtException cause = analysisException.cause;
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if (cause != null) {
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buffer.write('Caused by ');
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cause._writeOn(buffer);
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}
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} else {
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buffer.writeln(exception.toString());
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if (stackTrace != null) {
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buffer.writeln(stackTrace.toString());
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}
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}
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}
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}
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