Fri, 30 Nov 2012 15:14:48 +0000
8002099: Add support for intersection types in cast expression
Summary: Add parser and type-checking support for intersection types in cast expressions
Reviewed-by: jjg
duke@1 | 1 | /* |
jjg@1359 | 2 | * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javadoc; |
duke@1 | 27 | |
duke@1 | 28 | import com.sun.javadoc.*; |
duke@1 | 29 | |
duke@1 | 30 | import com.sun.tools.javac.code.Symbol.ClassSymbol; |
duke@1 | 31 | import com.sun.tools.javac.code.Type; |
duke@1 | 32 | import com.sun.tools.javac.code.Type.ClassType; |
duke@1 | 33 | |
jjg@1374 | 34 | import static com.sun.tools.javac.code.TypeTag.CLASS; |
duke@1 | 35 | |
duke@1 | 36 | |
duke@1 | 37 | /** |
duke@1 | 38 | * Implementation of <code>ParameterizedType</code>, which |
duke@1 | 39 | * represents an invocation of a generic class or interface. |
duke@1 | 40 | * |
jjg@1359 | 41 | * <p><b>This is NOT part of any supported API. |
jjg@1359 | 42 | * If you write code that depends on this, you do so at your own risk. |
jjg@1359 | 43 | * This code and its internal interfaces are subject to change or |
jjg@1359 | 44 | * deletion without notice.</b> |
jjg@1359 | 45 | * |
duke@1 | 46 | * @author Scott Seligman |
duke@1 | 47 | * @since 1.5 |
duke@1 | 48 | */ |
duke@1 | 49 | public class ParameterizedTypeImpl |
duke@1 | 50 | extends AbstractTypeImpl implements ParameterizedType { |
duke@1 | 51 | |
duke@1 | 52 | ParameterizedTypeImpl(DocEnv env, Type type) { |
duke@1 | 53 | super(env, type); |
duke@1 | 54 | } |
duke@1 | 55 | |
duke@1 | 56 | /** |
duke@1 | 57 | * Return the generic class or interface that declared this type. |
duke@1 | 58 | */ |
jjg@910 | 59 | @Override |
duke@1 | 60 | public ClassDoc asClassDoc() { |
duke@1 | 61 | return env.getClassDoc((ClassSymbol)type.tsym); |
duke@1 | 62 | } |
duke@1 | 63 | |
duke@1 | 64 | /** |
duke@1 | 65 | * Return the actual type arguments of this type. |
duke@1 | 66 | */ |
duke@1 | 67 | public com.sun.javadoc.Type[] typeArguments() { |
duke@1 | 68 | return TypeMaker.getTypes(env, type.getTypeArguments()); |
duke@1 | 69 | } |
duke@1 | 70 | |
duke@1 | 71 | /** |
duke@1 | 72 | * Return the class type that is a direct supertype of this one. |
duke@1 | 73 | * Return null if this is an interface type. |
duke@1 | 74 | */ |
duke@1 | 75 | public com.sun.javadoc.Type superclassType() { |
duke@1 | 76 | if (asClassDoc().isInterface()) { |
duke@1 | 77 | return null; |
duke@1 | 78 | } |
duke@1 | 79 | Type sup = env.types.supertype(type); |
duke@1 | 80 | return TypeMaker.getType(env, |
duke@1 | 81 | (sup != type) ? sup : env.syms.objectType); |
duke@1 | 82 | } |
duke@1 | 83 | |
duke@1 | 84 | /** |
duke@1 | 85 | * Return the interface types directly implemented by or extended by this |
duke@1 | 86 | * parameterized type. |
duke@1 | 87 | * Return an empty array if there are no interfaces. |
duke@1 | 88 | */ |
duke@1 | 89 | public com.sun.javadoc.Type[] interfaceTypes() { |
duke@1 | 90 | return TypeMaker.getTypes(env, env.types.interfaces(type)); |
duke@1 | 91 | } |
duke@1 | 92 | |
duke@1 | 93 | /** |
duke@1 | 94 | * Return the type that contains this type as a member. |
duke@1 | 95 | * Return null is this is a top-level type. |
duke@1 | 96 | */ |
duke@1 | 97 | public com.sun.javadoc.Type containingType() { |
jjg@1374 | 98 | if (type.getEnclosingType().hasTag(CLASS)) { |
duke@1 | 99 | // This is the type of an inner class. |
duke@1 | 100 | return TypeMaker.getType(env, type.getEnclosingType()); |
duke@1 | 101 | } |
duke@1 | 102 | ClassSymbol enclosing = type.tsym.owner.enclClass(); |
duke@1 | 103 | if (enclosing != null) { |
duke@1 | 104 | // Nested but not inner. Return the ClassDoc of the enclosing |
duke@1 | 105 | // class or interface. |
duke@1 | 106 | // See java.lang.reflect.ParameterizedType.getOwnerType(). |
duke@1 | 107 | return env.getClassDoc(enclosing); |
duke@1 | 108 | } |
duke@1 | 109 | return null; |
duke@1 | 110 | } |
duke@1 | 111 | |
duke@1 | 112 | |
duke@1 | 113 | // Asking for the "name" of a parameterized type doesn't exactly make |
duke@1 | 114 | // sense. It's a type expression. Return the name of its generic |
duke@1 | 115 | // type. |
jjg@910 | 116 | @Override |
duke@1 | 117 | public String typeName() { |
duke@1 | 118 | return TypeMaker.getTypeName(type, false); |
duke@1 | 119 | } |
duke@1 | 120 | |
jjg@910 | 121 | @Override |
duke@1 | 122 | public ParameterizedType asParameterizedType() { |
duke@1 | 123 | return this; |
duke@1 | 124 | } |
duke@1 | 125 | |
jjg@910 | 126 | @Override |
duke@1 | 127 | public String toString() { |
duke@1 | 128 | return parameterizedTypeToString(env, (ClassType)type, true); |
duke@1 | 129 | } |
duke@1 | 130 | |
duke@1 | 131 | static String parameterizedTypeToString(DocEnv env, ClassType cl, |
duke@1 | 132 | boolean full) { |
duke@1 | 133 | if (env.legacyDoclet) { |
duke@1 | 134 | return TypeMaker.getTypeName(cl, full); |
duke@1 | 135 | } |
jjg@910 | 136 | StringBuilder s = new StringBuilder(); |
jjg@1374 | 137 | if (!(cl.getEnclosingType().hasTag(CLASS))) { // if not an inner class... |
duke@1 | 138 | s.append(TypeMaker.getTypeName(cl, full)); |
duke@1 | 139 | } else { |
duke@1 | 140 | ClassType encl = (ClassType)cl.getEnclosingType(); |
duke@1 | 141 | s.append(parameterizedTypeToString(env, encl, full)) |
duke@1 | 142 | .append('.') |
duke@1 | 143 | .append(cl.tsym.name.toString()); |
duke@1 | 144 | } |
duke@1 | 145 | s.append(TypeMaker.typeArgumentsString(env, cl, full)); |
duke@1 | 146 | return s.toString(); |
duke@1 | 147 | } |
duke@1 | 148 | } |