| /* |
| * Copyright 2008 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 com.google.gwt.dev.jjs.ast; |
| |
| import com.google.gwt.dev.jjs.SourceInfo; |
| import com.google.gwt.dev.jjs.SourceOrigin; |
| |
| /** |
| * Java literal expression that evaluates to a Long. |
| */ |
| public class JLongLiteral extends JValueLiteral { |
| |
| public static final JLongLiteral ZERO = new JLongLiteral(SourceOrigin.UNKNOWN, 0L); |
| |
| public static JLongLiteral get(long value) { |
| return (value == 0) ? ZERO : new JLongLiteral(SourceOrigin.UNKNOWN, value); |
| } |
| |
| private final long value; |
| |
| public JLongLiteral(SourceInfo sourceInfo, long value) { |
| super(sourceInfo); |
| this.value = value; |
| } |
| |
| @Override |
| public JValueLiteral cloneFrom(JValueLiteral value) { |
| Object valueObj = value.getValueObj(); |
| if (valueObj instanceof Character) { |
| Character character = (Character) valueObj; |
| return new JLongLiteral(value.getSourceInfo(), character.charValue()); |
| } else if (valueObj instanceof Number) { |
| Number number = (Number) valueObj; |
| return new JLongLiteral(value.getSourceInfo(), number.longValue()); |
| } |
| return null; |
| } |
| |
| public JType getType() { |
| return JPrimitiveType.LONG; |
| } |
| |
| public long getValue() { |
| return value; |
| } |
| |
| @Override |
| public Object getValueObj() { |
| return Long.valueOf(value); |
| } |
| |
| public void traverse(JVisitor visitor, Context ctx) { |
| if (visitor.visit(this, ctx)) { |
| } |
| visitor.endVisit(this, ctx); |
| } |
| |
| private Object readResolve() { |
| return (value == 0L) ? ZERO : this; |
| } |
| } |