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 17package android.databinding.tool.expr; 18 19import android.databinding.tool.reflection.ModelAnalyzer; 20import android.databinding.tool.reflection.ModelClass; 21import android.databinding.tool.writer.KCode; 22 23import java.util.ArrayList; 24import java.util.List; 25 26public class BuiltInVariableExpr extends IdentifierExpr { 27 private final String mAccessCode; 28 29 BuiltInVariableExpr(String name, String type, String accessCode) { 30 super(name); 31 super.setUserDefinedType(type); 32 this.mAccessCode = accessCode; 33 } 34 35 @Override 36 public boolean isDynamic() { 37 return false; 38 } 39 40 @Override 41 protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { 42 ModelClass modelClass = super.resolveType(modelAnalyzer); 43 return modelClass; 44 } 45 46 @Override 47 protected List<Dependency> constructDependencies() { 48 return new ArrayList<Dependency>(); 49 } 50 51 @Override 52 protected KCode generateCode(boolean expand) { 53 if (mAccessCode == null) { 54 return new KCode().app(mName); 55 } else { 56 return new KCode().app(mAccessCode); 57 } 58 } 59 60 public boolean isDeclared() { 61 return false; 62 } 63 64 @Override 65 public String getInvertibleError() { 66 return "Built-in variables may not be the target of two-way binding"; 67 } 68} 69