| /* |
| * Copyright 2010 Google Inc. |
| * |
| * 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 com.google.gwt.editor.rebind.model; |
| |
| import com.google.web.bindery.autobean.shared.ValueCodex; |
| import com.google.gwt.core.ext.typeinfo.JArrayType; |
| import com.google.gwt.core.ext.typeinfo.JClassType; |
| import com.google.gwt.core.ext.typeinfo.JParameterizedType; |
| import com.google.gwt.core.ext.typeinfo.JType; |
| import com.google.gwt.core.ext.typeinfo.TypeOracle; |
| |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Utility class for common model methods. |
| */ |
| public class ModelUtils { |
| |
| static final Set<String> VALUE_TYPE_NAMES; |
| |
| static { |
| Set<Class<?>> valueTypes = ValueCodex.getAllValueTypes(); |
| Set<String> names = new HashSet<String>(valueTypes.size()); |
| for (Class<?> clazz : valueTypes) { |
| names.add(clazz.getName()); |
| } |
| VALUE_TYPE_NAMES = Collections.unmodifiableSet(names); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <T extends JType> T ensureBaseType(T maybeParameterized) { |
| if (maybeParameterized.isArray() != null) { |
| JArrayType array = maybeParameterized.isArray(); |
| return (T) array.getOracle().getArrayType( |
| ensureBaseType(array.getComponentType())); |
| } |
| if (maybeParameterized.isTypeParameter() != null) { |
| return (T) maybeParameterized.isTypeParameter().getBaseType(); |
| } |
| if (maybeParameterized.isParameterized() != null) { |
| return (T) maybeParameterized.isParameterized().getBaseType(); |
| } |
| if (maybeParameterized.isRawType() != null) { |
| return (T) maybeParameterized.isRawType().getBaseType(); |
| } |
| if (maybeParameterized.isWildcard() != null) { |
| return (T) maybeParameterized.isWildcard().getBaseType(); |
| } |
| return maybeParameterized; |
| } |
| |
| public static JClassType[] findParameterizationOf(JClassType intfType, |
| JClassType subType) { |
| assert intfType.isAssignableFrom(subType) : subType.getParameterizedQualifiedSourceName() |
| + " is not assignable to " |
| + subType.getParameterizedQualifiedSourceName(); |
| |
| for (JClassType supertype : subType.getFlattenedSupertypeHierarchy()) { |
| JParameterizedType parameterized = supertype.isParameterized(); |
| if (parameterized != null) { |
| // Found the desired supertype |
| if (intfType.equals(parameterized.getBaseType())) { |
| return parameterized.getTypeArgs(); |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Given a JType, return the binary name of the class that is most proximately |
| * assignable to the type. This method will resolve type parameters as well as |
| * wildcard types. |
| */ |
| public static String getQualifiedBaseBinaryName(JType type) { |
| return ensureBaseType(type).getErasedType().getQualifiedBinaryName(); |
| } |
| |
| /** |
| * Given a JType, return the source name of the class that is most proximately |
| * assignable to the type. This method will resolve type parameters as well as |
| * wildcard types. |
| */ |
| public static String getQualifiedBaseSourceName(JType type) { |
| return ensureBaseType(type).getErasedType().getQualifiedSourceName(); |
| } |
| |
| public static boolean isValueType(TypeOracle oracle, JType type) { |
| JClassType classType = type.isClassOrInterface(); |
| if (classType == null) { |
| return true; |
| } |
| if (type.isEnum() != null) { |
| return true; |
| } |
| |
| for (String valueType : VALUE_TYPE_NAMES) { |
| JClassType found = oracle.findType(valueType); |
| // null check to accommodate limited mock CompilationStates |
| if (found != null && found.equals(classType)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private ModelUtils() { |
| } |
| } |