blob: 876d432959f1c870aabf93db3e2c1abb8a98c566 [file] [log] [blame]
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
library analyzer.exception.exception;
/**
* An exception that occurred during the analysis of one or more sources.
*/
class AnalysisException implements Exception {
/**
* The message that explains why the exception occurred.
*/
final String message;
/**
* The exception that caused this exception, or `null` if this exception was
* not caused by another exception.
*/
final CaughtException cause;
/**
* Initialize a newly created exception to have the given [message] and
* [cause].
*/
AnalysisException([this.message = 'Exception', this.cause = null]);
String toString() {
StringBuffer buffer = new StringBuffer();
buffer.write('$runtimeType: ');
buffer.writeln(message);
if (cause != null) {
buffer.write('Caused by ');
cause._writeOn(buffer);
}
return buffer.toString();
}
}
/**
* An exception that was caught and has an associated stack trace.
*/
class CaughtException implements Exception {
/**
* The exception that was caught.
*/
final Object exception;
/**
* The stack trace associated with the exception.
*/
StackTrace stackTrace;
/**
* Initialize a newly created caught exception to have the given [exception]
* and [stackTrace].
*/
CaughtException(this.exception, stackTrace) {
if (stackTrace == null) {
try {
throw this;
} catch (_, st) {
stackTrace = st;
}
}
this.stackTrace = stackTrace;
}
@override
String toString() {
StringBuffer buffer = new StringBuffer();
_writeOn(buffer);
return buffer.toString();
}
/**
* Write a textual representation of the caught exception and its associated
* stack trace.
*/
void _writeOn(StringBuffer buffer) {
if (exception is AnalysisException) {
AnalysisException analysisException = exception;
buffer.writeln(analysisException.message);
if (stackTrace != null) {
buffer.writeln(stackTrace.toString());
}
CaughtException cause = analysisException.cause;
if (cause != null) {
buffer.write('Caused by ');
cause._writeOn(buffer);
}
} else {
buffer.writeln(exception.toString());
if (stackTrace != null) {
buffer.writeln(stackTrace.toString());
}
}
}
}