1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/emul/src/main/java/java/lang/reflect/TypeVariable.java Wed Jan 23 20:16:48 2013 +0100
1.3 @@ -0,0 +1,89 @@
1.4 +/*
1.5 + * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package java.lang.reflect;
1.30 +
1.31 +/**
1.32 + * TypeVariable is the common superinterface for type variables of kinds.
1.33 + * A type variable is created the first time it is needed by a reflective
1.34 + * method, as specified in this package. If a type variable t is referenced
1.35 + * by a type (i.e, class, interface or annotation type) T, and T is declared
1.36 + * by the nth enclosing class of T (see JLS 8.1.2), then the creation of t
1.37 + * requires the resolution (see JVMS 5) of the ith enclosing class of T,
1.38 + * for i = 0 to n, inclusive. Creating a type variable must not cause the
1.39 + * creation of its bounds. Repeated creation of a type variable has no effect.
1.40 + *
1.41 + * <p>Multiple objects may be instantiated at run-time to
1.42 + * represent a given type variable. Even though a type variable is
1.43 + * created only once, this does not imply any requirement to cache
1.44 + * instances representing the type variable. However, all instances
1.45 + * representing a type variable must be equal() to each other.
1.46 + * As a consequence, users of type variables must not rely on the identity
1.47 + * of instances of classes implementing this interface.
1.48 + *
1.49 + * @param <D> the type of generic declaration that declared the
1.50 + * underlying type variable.
1.51 + *
1.52 + * @since 1.5
1.53 + */
1.54 +public interface TypeVariable<D extends GenericDeclaration> extends Type {
1.55 + /**
1.56 + * Returns an array of {@code Type} objects representing the
1.57 + * upper bound(s) of this type variable. Note that if no upper bound is
1.58 + * explicitly declared, the upper bound is {@code Object}.
1.59 + *
1.60 + * <p>For each upper bound B: <ul> <li>if B is a parameterized
1.61 + * type or a type variable, it is created, (see {@link
1.62 + * java.lang.reflect.ParameterizedType ParameterizedType} for the
1.63 + * details of the creation process for parameterized types).
1.64 + * <li>Otherwise, B is resolved. </ul>
1.65 + *
1.66 + * @throws TypeNotPresentException if any of the
1.67 + * bounds refers to a non-existent type declaration
1.68 + * @throws MalformedParameterizedTypeException if any of the
1.69 + * bounds refer to a parameterized type that cannot be instantiated
1.70 + * for any reason
1.71 + * @return an array of {@code Type}s representing the upper
1.72 + * bound(s) of this type variable
1.73 + */
1.74 + Type[] getBounds();
1.75 +
1.76 + /**
1.77 + * Returns the {@code GenericDeclaration} object representing the
1.78 + * generic declaration declared this type variable.
1.79 + *
1.80 + * @return the generic declaration declared for this type variable.
1.81 + *
1.82 + * @since 1.5
1.83 + */
1.84 + D getGenericDeclaration();
1.85 +
1.86 + /**
1.87 + * Returns the name of this type variable, as it occurs in the source code.
1.88 + *
1.89 + * @return the name of this type variable, as it appears in the source code
1.90 + */
1.91 + String getName();
1.92 +}