| /* |
| * Copyright 2007 Google Inc. |
| * |
| * 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 java.lang; |
| |
| import static javaemul.internal.InternalPreconditions.checkNotNull; |
| |
| import java.io.Serializable; |
| |
| import javaemul.internal.JsUtils; |
| |
| import jsinterop.annotations.JsMethod; |
| |
| /** |
| * Wraps native <code>boolean</code> as an object. |
| */ |
| public final class Boolean implements Comparable<Boolean>, Serializable { |
| /* |
| * TODO: figure out how to not clinit this class on direct field access. |
| */ |
| |
| // CHECKSTYLE_OFF: These have to be created somewhere. |
| public static final Boolean FALSE = new Boolean(false); |
| public static final Boolean TRUE = new Boolean(true); |
| |
| // CHECKSTYLE_ON |
| |
| public static final Class<Boolean> TYPE = boolean.class; |
| |
| public static int compare(boolean x, boolean y) { |
| return (x == y) ? 0 : (x ? 1 : -1); |
| } |
| |
| public static int hashCode(boolean value) { |
| // The Java API doc defines these magic numbers. |
| return value ? 1231 : 1237; |
| } |
| |
| public static boolean logicalAnd(boolean a, boolean b) { |
| return a && b; |
| } |
| |
| public static boolean logicalOr(boolean a, boolean b) { |
| return a || b; |
| } |
| |
| public static boolean logicalXor(boolean a, boolean b) { |
| return a ^ b; |
| } |
| |
| public static boolean parseBoolean(String s) { |
| return "true".equalsIgnoreCase(s); |
| } |
| |
| public static String toString(boolean x) { |
| return String.valueOf(x); |
| } |
| |
| public static Boolean valueOf(boolean b) { |
| return b ? TRUE : FALSE; |
| } |
| |
| public static Boolean valueOf(String s) { |
| return valueOf(parseBoolean(s)); |
| } |
| |
| public Boolean(boolean value) { |
| /* |
| * Call to $createBoolean(value) must be here so that the method is referenced and not pruned |
| * before new Boolean(value) is replaced by $createBoolean(value) by |
| * RewriteConstructorCallsForUnboxedTypes. |
| */ |
| $createBoolean(value); |
| } |
| |
| public Boolean(String s) { |
| /* |
| * Call to $createBoolean(value) must be here so that the method is referenced and not pruned |
| * before new Boolean(value) is replaced by $createBoolean(value) by |
| * RewriteConstructorCallsForUnboxedTypes. |
| */ |
| $createBoolean(s); |
| } |
| |
| public boolean booleanValue() { |
| return unsafeCast(checkNotNull(this)); |
| } |
| |
| private static native boolean unsafeCast(Object value) /*-{ |
| return value; |
| }-*/; |
| |
| @Override |
| public int compareTo(Boolean b) { |
| return compare(booleanValue(), b.booleanValue()); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| return checkNotNull(this) == o; |
| } |
| |
| @Override |
| public int hashCode() { |
| return hashCode(booleanValue()); |
| } |
| |
| @Override |
| public String toString() { |
| return toString(booleanValue()); |
| } |
| |
| // CHECKSTYLE_OFF: Utility Methods for unboxed Boolean. |
| @JsMethod(name = "$create__boolean") |
| private static Boolean $createBoolean(boolean x) { |
| return createNative(x); |
| } |
| |
| @JsMethod(name = "$create__java_lang_String") |
| private static Boolean $createBoolean(String x) { |
| return createNative(Boolean.parseBoolean(x)); |
| } |
| |
| private static native Boolean createNative(boolean x) /*-{ |
| return x; |
| }-*/; |
| |
| @JsMethod |
| private static boolean $isInstance(Object instance) { |
| return "boolean".equals(JsUtils.typeOf(instance)); |
| } |
| //CHECKSTYLE_ON: End utility methods |
| } |