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; 025 026public final class ConditionVisitor { 027 028 private Label end; 029 private Label endIf; 030 031 public void visitBefore() { 032 end = new Label(); 033 } 034 035 public void visitWhenBeforeExpr() {} 036 037 public void visitWhenAfterExprBeforeBody(BytecodeContext bc){ 038 endIf = new Label(); 039 bc.getAdapter().ifZCmp(Opcodes.IFEQ, endIf); 040 } 041 042 public void visitWhenAfterBody(BytecodeContext bc) { 043 bc.getAdapter().visitJumpInsn(Opcodes.GOTO, end); 044 bc.getAdapter().visitLabel(endIf); 045 } 046 047 public void visitOtherviseBeforeBody(){} 048 049 public void visitOtherviseAfterBody() {} 050 051 public void visitAfter(BytecodeContext bc) { 052 bc.getAdapter().visitLabel(end); 053 } 054 055}