diff options
Diffstat (limited to 'plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/util/ListStack.java')
-rw-r--r-- | plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/util/ListStack.java | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/util/ListStack.java b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/util/ListStack.java new file mode 100644 index 000000000000..19c2416c44de --- /dev/null +++ b/plugins/java-decompiler/engine/src/org/jetbrains/java/decompiler/util/ListStack.java @@ -0,0 +1,93 @@ +/* + * Copyright 2000-2014 JetBrains s.r.o. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.jetbrains.java.decompiler.util; + +import java.util.ArrayList; + +public class ListStack<T> extends ArrayList<T> { + + protected int pointer = 0; + + public ListStack() { + super(); + } + + public ListStack(ArrayList<T> list) { + super(list); + } + + public ListStack<T> clone() { + ListStack<T> newstack = new ListStack<T>(this); + newstack.pointer = this.pointer; + return newstack; + } + + public T push(T item) { + this.add(item); + pointer++; + return item; + } + + public T pop() { + pointer--; + T o = this.get(pointer); + this.remove(pointer); + return o; + } + + public T pop(int count) { + T o = null; + for (int i = count; i > 0; i--) { + o = this.pop(); + } + return o; + } + + public void remove() { + pointer--; + this.remove(pointer); + } + + public void removeMultiple(int count) { + while (count > 0) { + pointer--; + this.remove(pointer); + count--; + } + } + + public boolean empty() { + return (pointer == 0); + } + + public int getPointer() { + return pointer; + } + + public T getByOffset(int offset) { + return this.get(pointer + offset); + } + + public void insertByOffset(int offset, T item) { + this.add(pointer + offset, item); + pointer++; + } + + public void clear() { + super.clear(); + pointer = 0; + } +} |