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 CastExpr extends Expr { 26 27 final String mType; 28 29 CastExpr(String type, Expr expr) { 30 super(expr); 31 mType = type; 32 } 33 34 @Override 35 protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { 36 return modelAnalyzer.findClass(mType, getModel().getImports()); 37 } 38 39 @Override 40 protected List<Dependency> constructDependencies() { 41 final List<Dependency> dependencies = constructDynamicChildrenDependencies(); 42 for (Dependency dependency : dependencies) { 43 dependency.setMandatory(true); 44 } 45 return dependencies; 46 } 47 48 protected String computeUniqueKey() { 49 return join(mType, getCastExpr().computeUniqueKey()); 50 } 51 52 public Expr getCastExpr() { 53 return getChildren().get(0); 54 } 55 56 public String getCastType() { 57 return getResolvedType().toJavaCode(); 58 } 59 60 @Override 61 protected KCode generateCode() { 62 return new KCode() 63 .app("(") 64 .app(getCastType()) 65 .app(") (", getCastExpr().toCode()) 66 .app(")"); 67 } 68 69 @Override 70 public String getInvertibleError() { 71 return getCastExpr().getInvertibleError(); 72 } 73 74 @Override 75 public Expr generateInverse(ExprModel model, Expr value, String bindingClassName) { 76 Expr castExpr = getCastExpr(); 77 ModelClass exprType = castExpr.getResolvedType(); 78 Expr castValue = model.castExpr(exprType.toJavaCode(), value); 79 return castExpr.generateInverse(model, castValue, bindingClassName); 80 } 81 82 @Override 83 public Expr cloneToModel(ExprModel model) { 84 return model.castExpr(mType, getCastExpr().cloneToModel(model)); 85 } 86 87 @Override 88 public String toString() { 89 return "(" + mType + ") " + getCastExpr(); 90 } 91 } 92
