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}