Index: pkg/matcher/lib/src/util.dart |
diff --git a/pkg/matcher/lib/src/util.dart b/pkg/matcher/lib/src/util.dart |
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index 0000000000000000000000000000000000000000..08cba77eb49ddf6da3d9598019c1118df0e57e7b |
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+// 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); |
+ } |
+} |