blois@google.com
18ea023a9d
Primary breaking changes are: - polymer/platform.dart is removed - Rather than platform.flush, use scheduleMicrotask(Observable.dirtyCheck) - Rather than endOfMicrotask, use either scheduleMicrotask or Future.value - Polymer.job removed, use Timer instead (and upvote bug 14414 for timer.restart if you really want the job semantics) This change is bringing up some really weird timing issues in the tests- I don't think any are inherent to the change itself but is more indicative of larger issues. BUG=13666 R=jmesserly@google.com Review URL: https://codereview.chromium.org//41293002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@29311 260f80e4-7a28-3924-810f-c04153c831b5
52 lines
1.7 KiB
Dart
52 lines
1.7 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library polymer.deserialize;
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import 'dart:convert' show JSON;
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import 'dart:mirrors' show TypeMirror;
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final _typeHandlers = () {
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// TODO(jmesserly): switch to map and symbol literal form when supported.
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var m = new Map();
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m[#dart.core.String] = (x, _) => x;
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m[#dart.core.Null] = (x, _) => x;
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m[#dart.core.DateTime] = (x, def) {
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// TODO(jmesserly): shouldn't need to try-catch here
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// See: https://code.google.com/p/dart/issues/detail?id=1878
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try {
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return DateTime.parse(x);
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} catch (e) {
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return def;
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}
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};
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m[#dart.core.bool] = (x, _) => x != 'false';
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m[#dart.core.int] =
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(x, def) => int.parse(x, onError: (_) => def);
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m[#dart.core.double] =
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(x, def) => double.parse(x, (_) => def);
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return m;
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}();
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/**
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* Convert representation of [value] based on type of [currentValue].
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*/
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Object deserializeValue(String value, Object currentValue, TypeMirror type) {
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var handler = _typeHandlers[type.qualifiedName];
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if (handler != null) return handler(value, currentValue);
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try {
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// If the string is an object, we can parse is with the JSON library.
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// include convenience replace for single-quotes. If the author omits
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// quotes altogether, parse will fail.
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return JSON.decode(value.replaceAll("'", '"'));
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// TODO(jmesserly): deserialized JSON is not assignable to most objects in
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// Dart. We should attempt to convert it appropriately.
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} catch(e) {
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// The object isn't valid JSON, return the raw value
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return value;
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}
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}
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