1 /* 2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.scenario.effect.compiler.tree; 27 28 import com.sun.scenario.effect.compiler.model.BaseType; 29 import com.sun.scenario.effect.compiler.model.Type; 30 31 /** 32 */ 33 public class FieldSelectExpr extends Expr { 34 35 private final Expr expr; 36 private final String fields; 37 38 FieldSelectExpr(Expr expr, String fields) { 39 super(getType(expr.getResultType(), fields)); 40 this.expr = expr; 41 this.fields = fields; 42 } 43 44 private static Type getType(Type orig, String fields) { 45 BaseType base = orig.getBaseType(); 46 int len = fields.length(); 47 for (Type type : Type.values()) { 48 if (type.getBaseType() == base && type.getNumFields() == len) { 49 return type; 50 } 51 } 52 throw new RuntimeException("Invalid type for field selection"); 53 } 54 55 public Expr getExpr() { 56 return expr; 57 } 58 59 public String getFields() { 60 return fields; 61 } 62 63 public void accept(TreeVisitor tv) { 64 tv.visitFieldSelectExpr(this); 65 } 66 }