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 17 package com.android.dx.rop.cst; 18 19 import com.android.dx.rop.type.Type; 20 21 /** 22 * Constants of type {@code boolean}. 23 */ 24 public final class CstBoolean 25 extends CstLiteral32 { 26 /** {@code non-null;} instance representing {@code false} */ 27 public static final CstBoolean VALUE_FALSE = new CstBoolean(false); 28 29 /** {@code non-null;} instance representing {@code true} */ 30 public static final CstBoolean VALUE_TRUE = new CstBoolean(true); 31 32 /** 33 * Makes an instance for the given value. This will return an 34 * already-allocated instance. 35 * 36 * @param value the {@code boolean} value 37 * @return {@code non-null;} the appropriate instance 38 */ make(boolean value)39 public static CstBoolean make(boolean value) { 40 return value ? VALUE_TRUE : VALUE_FALSE; 41 } 42 43 /** 44 * Makes an instance for the given {@code int} value. This 45 * will return an already-allocated instance. 46 * 47 * @param value must be either {@code 0} or {@code 1} 48 * @return {@code non-null;} the appropriate instance 49 */ make(int value)50 public static CstBoolean make(int value) { 51 if (value == 0) { 52 return VALUE_FALSE; 53 } else if (value == 1) { 54 return VALUE_TRUE; 55 } else { 56 throw new IllegalArgumentException("bogus value: " + value); 57 } 58 } 59 60 /** 61 * Constructs an instance. This constructor is private; use {@link #make}. 62 * 63 * @param value the {@code boolean} value 64 */ CstBoolean(boolean value)65 private CstBoolean(boolean value) { 66 super(value ? 1 : 0); 67 } 68 69 /** {@inheritDoc} */ 70 @Override toString()71 public String toString() { 72 return getValue() ? "boolean{true}" : "boolean{false}"; 73 } 74 75 /** {@inheritDoc} */ getType()76 public Type getType() { 77 return Type.BOOLEAN; 78 } 79 80 /** {@inheritDoc} */ 81 @Override typeName()82 public String typeName() { 83 return "boolean"; 84 } 85 86 /** {@inheritDoc} */ toHuman()87 public String toHuman() { 88 return getValue() ? "true" : "false"; 89 } 90 91 /** 92 * Gets the {@code boolean} value. 93 * 94 * @return the value 95 */ getValue()96 public boolean getValue() { 97 return (getIntBits() == 0) ? false : true; 98 } 99 } 100