| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.databinding.tool.expr; |
| |
| import android.databinding.tool.reflection.ModelAnalyzer; |
| import android.databinding.tool.reflection.ModelClass; |
| |
| import java.util.List; |
| |
| public class BracketExpr extends Expr { |
| |
| public static enum BracketAccessor { |
| ARRAY, |
| LIST, |
| MAP, |
| } |
| |
| private BracketAccessor mAccessor; |
| |
| BracketExpr(Expr target, Expr arg) { |
| super(target, arg); |
| } |
| |
| @Override |
| protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) { |
| ModelClass targetType = getTarget().getResolvedType(); |
| if (targetType.isArray()) { |
| mAccessor = BracketAccessor.ARRAY; |
| } else if (targetType.isList()) { |
| mAccessor = BracketAccessor.LIST; |
| } else if (targetType.isMap()) { |
| mAccessor = BracketAccessor.MAP; |
| } else { |
| throw new IllegalArgumentException("Cannot determine variable type used in [] " + |
| "expression. Cast the value to List, Map, " + |
| "or array. Type detected: " + targetType.toJavaCode()); |
| } |
| return targetType.getComponentType(); |
| } |
| |
| @Override |
| protected List<Dependency> constructDependencies() { |
| return constructDynamicChildrenDependencies(); |
| } |
| |
| protected String computeUniqueKey() { |
| return join(getTarget().computeUniqueKey(), "$", getArg().computeUniqueKey(), "$"); |
| } |
| |
| public Expr getTarget() { |
| return getChildren().get(0); |
| } |
| |
| public Expr getArg() { |
| return getChildren().get(1); |
| } |
| |
| public BracketAccessor getAccessor() { |
| return mAccessor; |
| } |
| |
| public boolean argCastsInteger() { |
| return Object.class.equals(getArg().getResolvedType()); |
| } |
| } |