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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.reflect.generics.factory; | ||
| 27 | |||
| 28 | import java.lang.reflect.Array; | ||
| 29 | import java.lang.reflect.Constructor; | ||
| 30 | import java.lang.reflect.GenericDeclaration; | ||
| 31 | import java.lang.reflect.Method; | ||
| 32 | import java.lang.reflect.ParameterizedType; | ||
| 33 | import java.lang.reflect.Type; | ||
| 34 | import java.lang.reflect.TypeVariable; | ||
| 35 | import java.lang.reflect.WildcardType; | ||
| 36 | |||
| 37 | |||
| 38 | import sun.reflect.generics.reflectiveObjects.*; | ||
| 39 | import sun.reflect.generics.scope.Scope; | ||
| 40 | import sun.reflect.generics.tree.FieldTypeSignature; | ||
| 41 | |||
| 42 | |||
| 43 | /** | ||
| 44 | * Factory for reflective generic type objects for use by | ||
| 45 | * core reflection (java.lang.reflect). | ||
| 46 | */ | ||
| 47 | public class CoreReflectionFactory implements GenericsFactory { | ||
| 48 | private GenericDeclaration decl; | ||
| 49 | private Scope scope; | ||
| 50 | |||
| 51 | private CoreReflectionFactory(GenericDeclaration d, Scope s) { | ||
| 52 | decl = d; | ||
| 53 | scope = s; | ||
| 54 | } | ||
| 55 | |||
| 56 | private GenericDeclaration getDecl(){ return decl;} | ||
| 57 | |||
| 58 | private Scope getScope(){ return scope;} | ||
| 59 | |||
| 60 | |||
| 61 | private ClassLoader getDeclsLoader() { | ||
| 62 | if (decl instanceof Class) {return ((Class) decl).getClassLoader();} | ||
| 63 | if (decl instanceof Method) { | ||
| 64 | return ((Method) decl).getDeclaringClass().getClassLoader(); | ||
| 65 | } | ||
| 66 | assert decl instanceof Constructor : "Constructor expected"; | ||
| 67 | return ((Constructor) decl).getDeclaringClass().getClassLoader(); | ||
| 68 | |||
| 69 | } | ||
| 70 | |||
| 71 | /** | ||
| 72 | * Factory for this class. Returns an instance of | ||
| 73 | * <tt>CoreReflectionFactory</tt> for the declaration and scope | ||
| 74 | * provided. | ||
| 75 | * This factory will produce reflective objects of the appropriate | ||
| 76 | * kind. Classes produced will be those that would be loaded by the | ||
| 77 | * defining class loader of the declaration <tt>d</tt> (if <tt>d</tt> | ||
| 78 | * is a type declaration, or by the defining loader of the declaring | ||
| 79 | * class of <tt>d</tt> otherwise. | ||
| 80 | * <p> Type variables will be created or lookup as necessary in the | ||
| 81 | * scope <tt> s</tt>. | ||
| 82 | * @param d - the generic declaration (class, interface, method or | ||
| 83 | * constructor) that thsi factory services | ||
| 84 | * @param s the scope in which the factory will allocate and search for | ||
| 85 | * type variables | ||
| 86 | * @return an instance of <tt>CoreReflectionFactory</tt> | ||
| 87 | */ | ||
| 88 | public static CoreReflectionFactory make(GenericDeclaration d, Scope s) { | ||
| 89 | return new CoreReflectionFactory(d, s); | ||
| 90 | } | ||
| 91 | |||
| 92 | public TypeVariable<?> makeTypeVariable(String name, | ||
| 93 | FieldTypeSignature[] bounds){ | ||
| 94 | return TypeVariableImpl.make(getDecl(), name, bounds, this); | ||
| 95 | } | ||
| 96 | |||
| 97 | public WildcardType makeWildcard(FieldTypeSignature[] ubs, | ||
| 98 | FieldTypeSignature[] lbs) { | ||
| 99 | return WildcardTypeImpl.make(ubs, lbs, this); | ||
| 100 | } | ||
| 101 | |||
| 102 | public ParameterizedType makeParameterizedType(Type declaration, | ||
| 103 | Type[] typeArgs, | ||
| 104 | Type owner) { | ||
| 105 | return ParameterizedTypeImpl.make((Class<?>) declaration, | ||
| 106 | typeArgs, owner); | ||
| 107 | } | ||
| 108 | |||
| 109 | public TypeVariable<?> findTypeVariable(String name){ | ||
| 110 | return getScope().lookup(name); | ||
| 111 | } | ||
| 112 | |||
| 113 | public Type makeNamedType(String name){ | ||
| 114 | try {return Class.forName(name, false, // don't initialize | ||
| 115 | getDeclsLoader());} | ||
| 116 | catch (ClassNotFoundException c) { | ||
| 117 | throw new TypeNotPresentException(name, c); | ||
| 118 | } | ||
| 119 | } | ||
| 120 | |||
| 121 | public Type makeArrayType(Type componentType){ | ||
| 122 | if (componentType instanceof Class<?>) | ||
| 123 | return Array.newInstance((Class<?>) componentType, 0).getClass(); | ||
| 124 | else | ||
| 125 | return GenericArrayTypeImpl.make(componentType); | ||
| 126 | } | ||
| 127 | |||
| 128 | public Type makeByte(){return byte.class;} | ||
| 129 | public Type makeBool(){return boolean.class;} | ||
| 130 | public Type makeShort(){return short.class;} | ||
| 131 | public Type makeChar(){return char.class;} | ||
| 132 | public Type makeInt(){return int.class;} | ||
| 133 | public Type makeLong(){return long.class;} | ||
| 134 | public Type makeFloat(){return float.class;} | ||
| 135 | public Type makeDouble(){return double.class;} | ||
| 136 | |||
| 137 | public Type makeVoid(){return void.class;} | ||
| 138 | } | ||