001    package railo.transformer.bytecode.op;
002    
003    import org.objectweb.asm.Label;
004    import org.objectweb.asm.Opcodes;
005    import org.objectweb.asm.Type;
006    import org.objectweb.asm.commons.GeneratorAdapter;
007    
008    import railo.transformer.bytecode.BytecodeContext;
009    import railo.transformer.bytecode.BytecodeException;
010    import railo.transformer.bytecode.cast.CastBoolean;
011    import railo.transformer.bytecode.expression.ExprBoolean;
012    import railo.transformer.bytecode.expression.Expression;
013    import railo.transformer.bytecode.expression.ExpressionBase;
014    import railo.transformer.bytecode.util.ExpressionUtil;
015    import railo.transformer.bytecode.util.Types;
016    
017    public final class OpContional extends ExpressionBase {
018    
019        private ExprBoolean cont;
020        private Expression left;
021        private Expression right;
022    
023        /**
024         *
025         * @see railo.transformer.bytecode.expression.ExpressionBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter, int)
026         */
027        public Type _writeOut(BytecodeContext bc, int mode) throws BytecodeException {
028            GeneratorAdapter adapter = bc.getAdapter();
029            
030            
031            Label yes = new Label();
032            Label end = new Label();
033            
034            // cont
035            ExpressionUtil.visitLine(bc, cont.getLine());
036            cont.writeOut(bc, MODE_VALUE);
037            adapter.visitJumpInsn(Opcodes.IFEQ, yes);
038            
039            // left
040            ExpressionUtil.visitLine(bc, left.getLine());
041            left.writeOut(bc, MODE_REF);
042            adapter.visitJumpInsn(Opcodes.GOTO, end);
043            
044            // right
045            ExpressionUtil.visitLine(bc, right.getLine());
046            adapter.visitLabel(yes);
047            right.writeOut(bc, MODE_REF);
048            adapter.visitLabel(end);
049            
050            return Types.OBJECT;
051            
052        }
053        
054    
055        
056        
057        
058        
059        
060        private OpContional(Expression cont, Expression left, Expression right) {
061            super(cont.getLine());
062            this.cont=CastBoolean.toExprBoolean(cont);
063            this.left=left;  
064            this.right=right;  
065        }
066        
067    
068        public static Expression toExpr(Expression cont, Expression left, Expression right) {
069            return new OpContional(cont,left,right);
070        }
071        
072    
073        /* *
074         * @see railo.transformer.bytecode.expression.Expression#getType()
075         * /
076        public int getType() {
077            return Types._BOOLEAN;
078        }*/
079    }
080