| // Copyright (c) 2013, 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 barback.build_result; |
| |
| import 'errors.dart'; |
| import 'utils.dart'; |
| |
| /// An event indicating that the cascade has finished building all assets. |
| /// |
| /// A build can end either in success or failure. If there were no errors during |
| /// the build, it's considered to be a success; any errors render it a failure, |
| /// although individual assets may still have built successfully. |
| class BuildResult { |
| // TODO(rnystrom): Revise how to track error results. Errors can come from |
| // both logs and exceptions. Accumulating them is likely slow and a waste of |
| // memory. If we do want to accumulate them, we should at least unify them |
| // in a single collection (probably of log entries). |
| /// All errors that were thrown during the build. |
| final Set<BarbackException> errors; |
| |
| /// `true` if the build succeeded. |
| bool get succeeded => errors.isEmpty; |
| |
| BuildResult(Iterable<BarbackException> errors) |
| : errors = flattenAggregateExceptions(errors).toSet(); |
| |
| /// Creates a build result indicating a successful build. |
| /// |
| /// This equivalent to a build result with no errors. |
| BuildResult.success() |
| : this([]); |
| |
| /// Creates a single [BuildResult] that contains all of the errors of |
| /// [results]. |
| factory BuildResult.aggregate(Iterable<BuildResult> results) { |
| var errors = unionAll(results.map((result) => result.errors)); |
| return new BuildResult(errors); |
| } |
| |
| String toString() { |
| if (succeeded) return "success"; |
| |
| return "errors:\n" + errors.map((error) { |
| var stackTrace = null; |
| if (error is TransformerException || error is AssetLoadException) { |
| stackTrace = error.stackTrace.terse; |
| } |
| |
| var msg = new StringBuffer(); |
| msg.write(prefixLines(error.toString())); |
| if (stackTrace != null) { |
| msg.write("\n\n"); |
| msg.write("Stack chain:\n"); |
| msg.write(prefixLines(stackTrace.toString())); |
| } |
| return msg.toString(); |
| }).join("\n\n"); |
| } |
| } |