CstChar.java revision 9dbd802c8c96c3a66873bc600bc7d1374a1d08e5
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.dx.rop.cst; 18 19import com.android.dx.rop.type.Type; 20import com.android.dx.util.Hex; 21 22/** 23 * Constants of type {@code char}. 24 */ 25public final class CstChar 26 extends CstLiteral32 { 27 /** {@code non-null;} the value {@code 0} as an instance of this class */ 28 public static final CstChar VALUE_0 = make((char) 0); 29 30 /** 31 * Makes an instance for the given value. This may (but does not 32 * necessarily) return an already-allocated instance. 33 * 34 * @param value the {@code char} value 35 */ 36 public static CstChar make(char value) { 37 return new CstChar(value); 38 } 39 40 /** 41 * Makes an instance for the given {@code int} value. This 42 * may (but does not necessarily) return an already-allocated 43 * instance. 44 * 45 * @param value the value, which must be in range for a {@code char} 46 * @return {@code non-null;} the appropriate instance 47 */ 48 public static CstChar make(int value) { 49 char cast = (char) value; 50 51 if (cast != value) { 52 throw new IllegalArgumentException("bogus char value: " + 53 value); 54 } 55 56 return make(cast); 57 } 58 59 /** 60 * Constructs an instance. This constructor is private; use {@link #make}. 61 * 62 * @param value the {@code char} value 63 */ 64 private CstChar(char value) { 65 super(value); 66 } 67 68 /** {@inheritDoc} */ 69 @Override 70 public String toString() { 71 int value = getIntBits(); 72 return "char{0x" + Hex.u2(value) + " / " + value + '}'; 73 } 74 75 /** {@inheritDoc} */ 76 @Override 77 public Type getType() { 78 return Type.CHAR; 79 } 80 81 /** {@inheritDoc} */ 82 @Override 83 public String typeName() { 84 return "char"; 85 } 86 87 /** {@inheritDoc} */ 88 @Override 89 public String toHuman() { 90 return Integer.toString(getIntBits()); 91 } 92 93 /** 94 * Gets the {@code char} value. 95 * 96 * @return the value 97 */ 98 public char getValue() { 99 return (char) getIntBits(); 100 } 101} 102