| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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 org.apache.royale.linter.rules; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.royale.compiler.problems.CompilerProblem; |
| import org.apache.royale.compiler.problems.ICompilerProblem; |
| import org.apache.royale.compiler.tree.ASTNodeID; |
| import org.apache.royale.compiler.tree.as.IASNode; |
| import org.apache.royale.compiler.tree.as.IClassNode; |
| import org.apache.royale.compiler.tree.as.IPackageNode; |
| import org.apache.royale.compiler.tree.as.IScopedNode; |
| import org.apache.royale.compiler.tree.as.ITypeNode; |
| import org.apache.royale.compiler.tree.as.IVariableNode; |
| import org.apache.royale.linter.LinterRule; |
| import org.apache.royale.linter.NodeVisitor; |
| import org.apache.royale.linter.TokenQuery; |
| import org.apache.royale.linter.problems.ILinterProblem; |
| |
| public class LocalVarShadowsFieldRule extends LinterRule { |
| @Override |
| public Map<ASTNodeID, NodeVisitor> getNodeVisitors() { |
| Map<ASTNodeID, NodeVisitor> result = new HashMap<>(); |
| result.put(ASTNodeID.VariableID, (node, tokenQuery, problems) -> { |
| checkVariableNode((IVariableNode) node, tokenQuery, problems); |
| }); |
| return result; |
| } |
| |
| private void checkVariableNode(IVariableNode variableNode, TokenQuery tokenQuery, Collection<ICompilerProblem> problems) { |
| IScopedNode containingScope = variableNode.getContainingScope(); |
| if (containingScope == null) { |
| return; |
| } |
| IASNode possibleType = containingScope.getParent(); |
| if (possibleType instanceof ITypeNode || possibleType instanceof IPackageNode) { |
| return; |
| } |
| IClassNode containingClass = (IClassNode) variableNode.getAncestorOfType(IClassNode.class); |
| if (containingClass == null) { |
| return; |
| } |
| IScopedNode classScope = containingClass.getScopedNode(); |
| for(int i = 0; i < classScope.getChildCount(); i++) { |
| IASNode child = classScope.getChild(i); |
| if (child instanceof IVariableNode) { |
| IVariableNode childVar = (IVariableNode) child; |
| if (variableNode.getName().equals(childVar.getName())) { |
| problems.add(new LocalVarShadowsFieldLinterProblem(variableNode, containingClass)); |
| return; |
| } |
| } |
| } |
| } |
| |
| public static class LocalVarShadowsFieldLinterProblem extends CompilerProblem implements ILinterProblem { |
| public static final String DESCRIPTION = "Local variable '${varName}' has the same name as field in class '${className}'"; |
| |
| public LocalVarShadowsFieldLinterProblem(IVariableNode variableNode, IClassNode classNode) |
| { |
| super(variableNode.getNameExpressionNode()); |
| varName = variableNode.getName(); |
| className = classNode.getName(); |
| } |
| |
| public String varName; |
| public String className; |
| } |
| } |