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 22 import java.util.List; 23 24 public class MathExpr extends Expr { 25 final String mOp; 26 MathExpr(Expr left, String op, Expr right) { 27 super(left, right); 28 mOp = op; 29 } 30 31 @Override 32 protected String computeUniqueKey() { 33 return join(getLeft().getUniqueKey(), mOp, getRight().getUniqueKey()); 34 } 35 36 @Override 37 protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { 38 if ("+".equals(mOp)) { 39 // TODO we need upper casting etc. 40 if (getLeft().getResolvedType().isString() 41 || getRight().getResolvedType().isString()) { 42 return modelAnalyzer.findClass(String.class); 43 } 44 } 45 return modelAnalyzer.findCommonParentOf(getLeft().getResolvedType(), 46 getRight().getResolvedType()); 47 } 48 49 @Override 50 protected List<Dependency> constructDependencies() { 51 return constructDynamicChildrenDependencies(); 52 } 53 54 public String getOp() { 55 return mOp; 56 } 57 58 public Expr getLeft() { 59 return getChildren().get(0); 60 } 61 62 public Expr getRight() { 63 return getChildren().get(1); 64 } 65 } 66
