| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * 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 com.android.jack.dx.io.instructions; |
| |
| import java.io.EOFException; |
| |
| /** |
| * Implementation of {@code CodeInput} that reads from a {@code short[]}. |
| */ |
| public final class ShortArrayCodeInput extends BaseCodeCursor implements CodeInput { |
| /** source array to read from */ |
| private final short[] array; |
| |
| /** |
| * Constructs an instance. |
| */ |
| public ShortArrayCodeInput(short[] array) { |
| if (array == null) { |
| throw new NullPointerException("array == null"); |
| } |
| |
| this.array = array; |
| } |
| |
| /** @inheritDoc */ |
| @Override |
| public boolean hasMore() { |
| return cursor() < array.length; |
| } |
| |
| /** @inheritDoc */ |
| @Override |
| public int read() throws EOFException { |
| try { |
| int value = array[cursor()]; |
| advance(1); |
| return value & 0xffff; |
| } catch (ArrayIndexOutOfBoundsException ex) { |
| throw new EOFException(); |
| } |
| } |
| |
| /** @inheritDoc */ |
| @Override |
| public int readInt() throws EOFException { |
| int short0 = read(); |
| int short1 = read(); |
| |
| return short0 | (short1 << 16); |
| } |
| |
| /** @inheritDoc */ |
| @Override |
| public long readLong() throws EOFException { |
| long short0 = read(); |
| long short1 = read(); |
| long short2 = read(); |
| long short3 = read(); |
| |
| return short0 | (short1 << 16) | (short2 << 32) | (short3 << 48); |
| } |
| } |