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.statement; 020 021import java.io.PrintStream; 022 023import lucee.transformer.bytecode.BytecodeContext; 024import lucee.transformer.bytecode.BytecodeException; 025import lucee.transformer.bytecode.Position; 026import lucee.transformer.bytecode.expression.Expression; 027import lucee.transformer.bytecode.util.Types; 028 029import org.objectweb.asm.Type; 030import org.objectweb.asm.commons.GeneratorAdapter; 031import org.objectweb.asm.commons.Method; 032 033public final class SystemOut extends StatementBaseNoFinal { 034 035 036 // void println (Object) 037 private final static Method METHOD_PRINTLN = new Method("println", 038 Types.VOID, 039 new Type[]{Types.OBJECT}); 040 041 Expression expr; 042 043 /** 044 * constructor of the class 045 * @param expr 046 * @param line 047 */ 048 public SystemOut(Expression expr, Position start,Position end) { 049 super(start,end); 050 this.expr=expr; 051 } 052 053 /** 054 * @see lucee.transformer.bytecode.statement.StatementBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter) 055 */ 056 public void _writeOut(BytecodeContext bc) throws BytecodeException { 057 GeneratorAdapter adapter = bc.getAdapter(); 058 adapter.getStatic(Type.getType(System.class),"out",Type.getType(PrintStream.class)); 059 expr.writeOut(bc,Expression.MODE_REF); 060 adapter.invokeVirtual(Type.getType(PrintStream.class),METHOD_PRINTLN); 061 } 062}