1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.databinding.tool.expr; 18 19 import android.databinding.tool.reflection.ModelAnalyzer; 20 import android.databinding.tool.reflection.ModelClass; 21 import android.databinding.tool.writer.KCode; 22 23 import java.util.List; 24 25 public class BitShiftExpr extends Expr { 26 final String mOp; 27 BitShiftExpr(Expr left, String op, Expr right) { 28 super(left, right); 29 mOp = op; 30 } 31 32 @Override 33 protected String computeUniqueKey() { 34 return join(getLeft().getUniqueKey(), mOp, getRight().getUniqueKey()); 35 } 36 37 @Override 38 protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { 39 return getLeft().getResolvedType(); 40 } 41 42 @Override 43 protected List<Dependency> constructDependencies() { 44 return constructDynamicChildrenDependencies(); 45 } 46 47 public String getOp() { 48 return mOp; 49 } 50 51 public Expr getLeft() { 52 return getChildren().get(0); 53 } 54 55 public Expr getRight() { 56 return getChildren().get(1); 57 } 58 59 @Override 60 protected KCode generateCode() { 61 return new KCode() 62 .app("", getLeft().toCode()) 63 .app(getOp()) 64 .app("", getRight().toCode()); 65 } 66 67 @Override 68 public Expr cloneToModel(ExprModel model) { 69 return model.bitshift(getLeft().cloneToModel(model), mOp, getRight().cloneToModel(model)); 70 } 71 72 @Override 73 public String getInvertibleError() { 74 return "Bit shift operators cannot be inverted in two-way binding"; 75 } 76 77 @Override 78 public String toString() { 79 return getLeft().toString() + ' ' + mOp + ' ' + getRight().toString(); 80 } 81 } 82