| /* |
| * 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.codehaus.groovy.transform; |
| |
| import groovy.transform.IndexedProperty; |
| import org.codehaus.groovy.ast.ASTNode; |
| import org.codehaus.groovy.ast.AnnotatedNode; |
| import org.codehaus.groovy.ast.AnnotationNode; |
| import org.codehaus.groovy.ast.ClassHelper; |
| import org.codehaus.groovy.ast.ClassNode; |
| import org.codehaus.groovy.ast.FieldNode; |
| import org.codehaus.groovy.ast.Parameter; |
| import org.codehaus.groovy.ast.stmt.BlockStatement; |
| import org.codehaus.groovy.control.CompilePhase; |
| import org.codehaus.groovy.control.SourceUnit; |
| |
| import java.util.List; |
| |
| import static org.apache.groovy.ast.tools.ClassNodeUtils.addGeneratedMethod; |
| import static org.apache.groovy.util.BeanUtils.capitalize; |
| import static org.codehaus.groovy.ast.ClassHelper.make; |
| import static org.codehaus.groovy.ast.ClassHelper.makeWithoutCaching; |
| import static org.codehaus.groovy.ast.tools.GeneralUtils.assignS; |
| import static org.codehaus.groovy.ast.tools.GeneralUtils.indexX; |
| import static org.codehaus.groovy.ast.tools.GeneralUtils.params; |
| import static org.codehaus.groovy.ast.tools.GeneralUtils.stmt; |
| import static org.codehaus.groovy.ast.tools.GeneralUtils.varX; |
| |
| /** |
| * Handles generation of code for the {@code @}IndexedProperty annotation. |
| */ |
| @GroovyASTTransformation(phase = CompilePhase.CANONICALIZATION) |
| public class IndexedPropertyASTTransformation extends AbstractASTTransformation { |
| |
| private static final Class MY_CLASS = IndexedProperty.class; |
| private static final ClassNode MY_TYPE = make(MY_CLASS); |
| private static final String MY_TYPE_NAME = "@" + MY_TYPE.getNameWithoutPackage(); |
| private static final ClassNode LIST_TYPE = makeWithoutCaching(List.class, false); |
| |
| public void visit(ASTNode[] nodes, SourceUnit source) { |
| init(nodes, source); |
| AnnotatedNode parent = (AnnotatedNode) nodes[1]; |
| AnnotationNode node = (AnnotationNode) nodes[0]; |
| if (!MY_TYPE.equals(node.getClassNode())) return; |
| |
| if (parent instanceof FieldNode) { |
| FieldNode fNode = (FieldNode) parent; |
| ClassNode cNode = fNode.getDeclaringClass(); |
| if (cNode.getProperty(fNode.getName()) == null) { |
| addError("Error during " + MY_TYPE_NAME + " processing. Field '" + fNode.getName() + |
| "' doesn't appear to be a property; incorrect visibility?", fNode); |
| return; |
| } |
| ClassNode fType = fNode.getType(); |
| if (fType.isArray()) { |
| addArraySetter(fNode); |
| addArrayGetter(fNode); |
| } else if (fType.isDerivedFrom(LIST_TYPE)) { |
| addListSetter(fNode); |
| addListGetter(fNode); |
| } else { |
| addError("Error during " + MY_TYPE_NAME + " processing. Non-Indexable property '" + fNode.getName() + |
| "' found. Type must be array or list but found " + fType.getName(), fNode); |
| } |
| } |
| } |
| |
| private static void addListGetter(FieldNode fNode) { |
| addGetter(fNode, getComponentTypeForList(fNode.getType())); |
| } |
| |
| private static void addListSetter(FieldNode fNode) { |
| addSetter(fNode, getComponentTypeForList(fNode.getType())); |
| } |
| |
| private static void addArrayGetter(FieldNode fNode) { |
| addGetter(fNode, fNode.getType().getComponentType()); |
| } |
| |
| private static void addArraySetter(FieldNode fNode) { |
| addSetter(fNode, fNode.getType().getComponentType()); |
| } |
| |
| private static void addGetter(FieldNode fNode, ClassNode componentType) { |
| ClassNode cNode = fNode.getDeclaringClass(); |
| BlockStatement body = new BlockStatement(); |
| Parameter[] params = new Parameter[1]; |
| params[0] = new Parameter(ClassHelper.int_TYPE, "index"); |
| body.addStatement(stmt(indexX(varX(fNode), varX(params[0])))); |
| addGeneratedMethod(cNode, makeName(fNode, "get"), getModifiers(fNode), componentType, params, null, body); |
| } |
| |
| private static void addSetter(FieldNode fNode, ClassNode componentType) { |
| ClassNode cNode = fNode.getDeclaringClass(); |
| BlockStatement body = new BlockStatement(); |
| Parameter[] theParams = params( |
| new Parameter(ClassHelper.int_TYPE, "index"), |
| new Parameter(componentType, "value")); |
| body.addStatement(assignS(indexX(varX(fNode), varX(theParams[0])), varX(theParams[1]))); |
| addGeneratedMethod(cNode, makeName(fNode, "set"), getModifiers(fNode), ClassHelper.VOID_TYPE, theParams, null, body); |
| } |
| |
| private static ClassNode getComponentTypeForList(ClassNode fType) { |
| if (fType.isUsingGenerics() && fType.getGenericsTypes().length == 1) { |
| return fType.getGenericsTypes()[0].getType(); |
| } else { |
| return ClassHelper.OBJECT_TYPE; |
| } |
| } |
| |
| private static int getModifiers(FieldNode fNode) { |
| int mods = ACC_PUBLIC; |
| if (fNode.isStatic()) mods |= ACC_STATIC; |
| return mods; |
| } |
| |
| private static String makeName(FieldNode fNode, String prefix) { |
| return prefix + capitalize(fNode.getName()); |
| } |
| } |