001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.transformer.bytecode.visitor;
020
021import lucee.transformer.bytecode.BytecodeContext;
022
023import org.objectweb.asm.Label;
024import org.objectweb.asm.Opcodes;
025import org.objectweb.asm.commons.GeneratorAdapter;
026
027public final class AndVisitor {
028        private Label end;
029        private Label l2;
030        public void visitBegin() {
031                end = new Label();
032        l2 = new Label();
033        }
034        public void visitMiddle(BytecodeContext bc) {
035                bc.getAdapter().ifZCmp(Opcodes.IFEQ, end);
036
037                
038                
039        }
040        public void visitEnd(BytecodeContext bc) {
041                GeneratorAdapter adapter = bc.getAdapter();
042        adapter.ifZCmp(Opcodes.IFEQ, end);
043        adapter.push(true);
044        
045        adapter.visitJumpInsn(Opcodes.GOTO, l2);
046        adapter.visitLabel(end);
047
048        adapter.push(false);
049        adapter.visitLabel(l2);
050        }
051}