86 lines
3.3 KiB
Dart
86 lines
3.3 KiB
Dart
/*
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* This file is part of the Protevus Platform.
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*
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* (C) Protevus <developers@protevus.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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import 'package:protevus_runtime/runtime.dart';
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const String _listPrefix = "List<";
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const String _mapPrefix = "Map<String,";
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T cast<T>(dynamic input) {
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try {
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var typeString = T.toString();
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if (typeString.endsWith('?')) {
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if (input == null) {
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return null as T;
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} else {
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typeString = typeString.substring(0, typeString.length - 1);
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}
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}
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if (typeString.startsWith(_listPrefix)) {
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if (input is! List) {
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throw TypeError();
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}
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if (typeString.startsWith("List<int>")) {
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return List<int>.from(input) as T;
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} else if (typeString.startsWith("List<num>")) {
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return List<num>.from(input) as T;
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} else if (typeString.startsWith("List<double>")) {
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return List<double>.from(input) as T;
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} else if (typeString.startsWith("List<String>")) {
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return List<String>.from(input) as T;
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} else if (typeString.startsWith("List<bool>")) {
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return List<bool>.from(input) as T;
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} else if (typeString.startsWith("List<int?>")) {
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return List<int?>.from(input) as T;
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} else if (typeString.startsWith("List<num?>")) {
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return List<num?>.from(input) as T;
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} else if (typeString.startsWith("List<double?>")) {
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return List<double?>.from(input) as T;
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} else if (typeString.startsWith("List<String?>")) {
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return List<String?>.from(input) as T;
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} else if (typeString.startsWith("List<bool?>")) {
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return List<bool?>.from(input) as T;
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} else if (typeString.startsWith("List<Map<String, dynamic>>")) {
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return List<Map<String, dynamic>>.from(input) as T;
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}
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} else if (typeString.startsWith(_mapPrefix)) {
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if (input is! Map) {
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throw TypeError();
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}
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final inputMap = input as Map<String, dynamic>;
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if (typeString.startsWith("Map<String, int>")) {
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return Map<String, int>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, num>")) {
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return Map<String, num>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, double>")) {
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return Map<String, double>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, String>")) {
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return Map<String, String>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, bool>")) {
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return Map<String, bool>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, int?>")) {
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return Map<String, int?>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, num?>")) {
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return Map<String, num?>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, double?>")) {
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return Map<String, double?>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, String?>")) {
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return Map<String, String?>.from(inputMap) as T;
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} else if (typeString.startsWith("Map<String, bool?>")) {
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return Map<String, bool?>.from(inputMap) as T;
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}
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}
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return input as T;
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} on TypeError {
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throw TypeCoercionException(T, input.runtimeType);
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}
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}
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