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sdk/compiler/lib/implementation/bool.js
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dgrove@google.com 977977e6ea Initial checkin.
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9 260f80e4-7a28-3924-810f-c04153c831b5
2011-10-05 05:00:35 +00:00

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JavaScript

// Copyright (c) 2011, 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.
/**
* Extend the Boolean prototype with members expected in dart.
*
* TODO(jimhug): Add verification to ! and truth tests
*/
Boolean.$instanceOf = function(obj) {
return typeof obj == 'boolean' || obj instanceof Boolean;
};
function native_BoolImplementation_EQ(other) {
if (typeof other == 'boolean') {
return this == other;
} else if (other instanceof Boolean) {
// Must convert other to a primitive for value equality to work
return this == Boolean(other);
} else {
return false;
}
}
function native_BoolImplementation_toString() {
return (this == true) ? "true" : "false";
}