| // 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 matcher.util; |
| |
| import 'core_matchers.dart'; |
| import 'interfaces.dart'; |
| |
| /// Useful utility for nesting match states. |
| void addStateInfo(Map matchState, Map values) { |
| var innerState = new Map.from(matchState); |
| matchState.clear(); |
| matchState['state'] = innerState; |
| matchState.addAll(values); |
| } |
| |
| /// Takes an argument and returns an equivalent [Matcher]. |
| /// |
| /// If the argument is already a matcher this does nothing, |
| /// else if the argument is a function, it generates a predicate |
| /// function matcher, else it generates an equals matcher. |
| Matcher wrapMatcher(x) { |
| if (x is Matcher) { |
| return x; |
| } else if (x is Function) { |
| return predicate(x); |
| } else { |
| return equals(x); |
| } |
| } |