| /* |
| * Copyright (C) 2007 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.rop.cst; |
| |
| import com.android.dx.rop.type.Type; |
| import com.android.dx.util.Hex; |
| |
| /** |
| * Constants of type <code>CONSTANT_Integer_info</code>. |
| */ |
| public final class CstInteger |
| extends CstLiteral32 { |
| /** non-null; array of cached instances */ |
| private static final CstInteger[] cache = new CstInteger[511]; |
| |
| /** non-null; instance representing <code>-1</code> */ |
| public static final CstInteger VALUE_M1 = make(-1); |
| |
| /** non-null; instance representing <code>0</code> */ |
| public static final CstInteger VALUE_0 = make(0); |
| |
| /** non-null; instance representing <code>1</code> */ |
| public static final CstInteger VALUE_1 = make(1); |
| |
| /** non-null; instance representing <code>2</code> */ |
| public static final CstInteger VALUE_2 = make(2); |
| |
| /** non-null; instance representing <code>3</code> */ |
| public static final CstInteger VALUE_3 = make(3); |
| |
| /** non-null; instance representing <code>4</code> */ |
| public static final CstInteger VALUE_4 = make(4); |
| |
| /** non-null; instance representing <code>5</code> */ |
| public static final CstInteger VALUE_5 = make(5); |
| |
| /** |
| * Makes an instance for the given value. This may (but does not |
| * necessarily) return an already-allocated instance. |
| * |
| * @param value the <code>int</code> value |
| * @return non-null; the appropriate instance |
| */ |
| public static CstInteger make(int value) { |
| /* |
| * Note: No need to synchronize, since we don't make any sort |
| * of guarantee about ==, and it's okay to overwrite existing |
| * entries too. |
| */ |
| int idx = (value & 0x7fffffff) % cache.length; |
| CstInteger obj = cache[idx]; |
| |
| if ((obj != null) && (obj.getValue() == value)) { |
| return obj; |
| } |
| |
| obj = new CstInteger(value); |
| cache[idx] = obj; |
| return obj; |
| } |
| |
| /** |
| * Constructs an instance. This constructor is private; use {@link #make}. |
| * |
| * @param value the <code>int</code> value |
| */ |
| private CstInteger(int value) { |
| super(value); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String toString() { |
| int value = getIntBits(); |
| return "int{0x" + Hex.u4(value) + " / " + value + '}'; |
| } |
| |
| /** {@inheritDoc} */ |
| public Type getType() { |
| return Type.INT; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String typeName() { |
| return "int"; |
| } |
| |
| /** {@inheritDoc} */ |
| public String toHuman() { |
| return Integer.toString(getIntBits()); |
| } |
| |
| /** |
| * Gets the <code>int</code> value. |
| * |
| * @return the value |
| */ |
| public int getValue() { |
| return getIntBits(); |
| } |
| } |