com.android.dx.io.instructions.ShortArrayCodeInput Maven / Gradle / Ivy
/*
* 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.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 */
public boolean hasMore() {
return cursor() < array.length;
}
/** @inheritDoc */
public int read() throws EOFException {
try {
int value = array[cursor()];
advance(1);
return value & 0xffff;
} catch (ArrayIndexOutOfBoundsException ex) {
throw new EOFException();
}
}
/** @inheritDoc */
public int readInt() throws EOFException {
int short0 = read();
int short1 = read();
return short0 | (short1 << 16);
}
/** @inheritDoc */
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);
}
}