Index: lib/protobuf/runtime/ImmutableList.dart |
diff --git a/lib/protobuf/runtime/ImmutableList.dart b/lib/protobuf/runtime/ImmutableList.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..57a4492caf8a90f2178f6df4f0076cd96f88407c |
--- /dev/null |
+++ b/lib/protobuf/runtime/ImmutableList.dart |
@@ -0,0 +1,151 @@ |
+// 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. |
+ |
+/* |
+ * This is a wrapper around a fixed-length list with modifications disabled. |
+ */ |
+class ImmutableList<T> implements List<T>, Hashable { |
+ List<T> _wrappedList; |
+ int _memoizedHashCode = -1; |
+ |
+ static List _EMPTY; |
+ static ImmutableList get EMPTY() { |
+ if (_EMPTY == null) { |
+ _EMPTY = new ImmutableList.from([]); |
+ } |
+ return _EMPTY; |
+ } |
+ |
+ ImmutableList.from(List<T> list) { |
+ _wrappedList = new List(list.length); |
+ _wrappedList.setRange(0, list.length, list); |
+ } |
+ |
+ bool operator ==(Object o) { |
+ if (o is! ImmutableList){ |
+ return false; |
+ } |
+ ImmutableList oil = o; |
+ if (length != oil.length) { |
+ return false; |
+ } |
+ |
+ for (int i = 0; i < length; i++) { |
+ if (this[i] != oil[i]) { |
+ return false; |
+ } |
+ } |
+ return true; |
+ } |
+ |
+ int hashCode() { |
+ if (_memoizedHashCode == -1) { |
+ _memoizedHashCode = 13 * length; |
+ for (var entry in this) { |
+ if (entry is Hashable) { |
+ _memoizedHashCode = (19 * _memoizedHashCode) + entry.hashCode; |
+ } |
+ } |
+ } |
+ return _memoizedHashCode; |
+ } |
+ |
+ T operator [](int index) => _wrappedList[index]; |
+ |
+ List<T> getRange(int start, int length) => |
+ _wrappedList.getRange(start, length); |
+ |
+ int indexOf(T element, [int start = 0]) => |
+ _wrappedList.indexOf(element, start); |
+ |
+ Iterator<T> iterator() => _wrappedList.iterator(); |
+ |
+ T last() => this[length - 1]; |
+ |
+ int lastIndexOf(T element, [int start = null]) => |
+ _wrappedList.lastIndexOf(element, start); |
+ |
+ int get length() => _wrappedList.length; |
+ |
+ String toString() { |
+ return "ImmutableList"; |
+ } |
+ |
+ void operator []=(int index, T value) { |
+ throw const UnsupportedOperationException( |
+ "Cannot modify an immutable list"); |
+ } |
+ |
+ void copyFrom(List src, int srcStart, int dstStart, int count) { |
+ throw const UnsupportedOperationException( |
+ "Cannot modify an immutable list"); |
+ } |
+ |
+ void setRange(int start, int length, List<T> from, [int startFrom = 0]) { |
+ throw const UnsupportedOperationException( |
+ "Cannot modify an immutable list"); |
+ } |
+ |
+ void removeRange(int start, int length) { |
+ throw const UnsupportedOperationException( |
+ "Cannot remove range of an immutable list"); |
+ } |
+ |
+ void insertRange(int start, int length, [T initialValue = null]) { |
+ throw const UnsupportedOperationException( |
+ "Cannot insert range in an immutable list"); |
+ } |
+ |
+ void sort(int compare(T a, T b)) { |
+ throw const UnsupportedOperationException( |
+ "Cannot modify an immutable list"); |
+ } |
+ |
+ void add(T element) { |
+ throw const UnsupportedOperationException( |
+ "Cannot add to an immutable list"); |
+ } |
+ |
+ void addLast(T element) { |
+ add(element); |
+ } |
+ |
+ void addAll(Collection<T> elements) { |
+ throw const UnsupportedOperationException( |
+ "Cannot add to an immutable list"); |
+ } |
+ |
+ void clear() { |
+ throw const UnsupportedOperationException( |
+ "Cannot clear an immutable list"); |
+ } |
+ |
+ void set length(int length) { |
+ throw const UnsupportedOperationException( |
+ "Cannot change the length of an immutable list"); |
+ } |
+ |
+ T removeLast() { |
+ throw const UnsupportedOperationException( |
+ "Cannot remove in a non-extendable list"); |
+ } |
+ |
+ /** |
+ * Collection interface. |
+ */ |
+ |
+ void forEach(f(T element)) => _wrappedList.forEach(f); |
+ |
+ Collection<T> filter(bool f(T element)) => _wrappedList.filter(f); |
+ |
+ bool every(bool f(T element)) => _wrappedList.every(f); |
+ |
+ bool some(bool f(T element)) => _wrappedList.some(f); |
+ |
+ bool isEmpty() => _wrappedList.isEmpty(); |
+ |
+ Collection map(f(T element)) { |
+ throw "not implemented"; |
+ } |
+} |