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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/lang/reflect/ParameterizedType.java | |
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Diffstat (limited to 'libjava/classpath/java/lang/reflect/ParameterizedType.java')
-rw-r--r-- | libjava/classpath/java/lang/reflect/ParameterizedType.java | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/libjava/classpath/java/lang/reflect/ParameterizedType.java b/libjava/classpath/java/lang/reflect/ParameterizedType.java new file mode 100644 index 000000000..7a8a7b4e7 --- /dev/null +++ b/libjava/classpath/java/lang/reflect/ParameterizedType.java @@ -0,0 +1,122 @@ +/* ParameterizedType.java -- Represents parameterized types e.g. List<String> + Copyright (C) 2004, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.lang.reflect; + +/** + * <p> + * Represents a type which is parameterized over one or more other + * types. For example, <code>List<Integer></code> is a parameterized + * type, with <code>List</code> parameterized over the type + * <code>Integer</code>. + * </p> + * <p> + * Instances of this classes are created as needed, during reflection. + * On creating a parameterized type, <code>p</code>, the + * <code>GenericTypeDeclaration</code> corresponding to <code>p</code> + * is created and resolved. Each type argument of <code>p</code> + * is then created recursively; details of this process are availble + * in the documentation of <code>TypeVariable</code>. This creation + * process only happens once; repetition has no effect. + * </p> + * <p> + * Implementors of this interface must implement an appropriate + * <code>equals()</code> method. This method should equate any + * two instances of the implementing class that have the same + * <code>GenericTypeDeclaration</code> and <code>Type</code> + * parameters. + * + * @author Tom Tromey (tromey@redhat.com) + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @see GenericDeclaration + * @see TypeVariable + * @since 1.5 + */ +public interface ParameterizedType + extends Type +{ + + /** + * <p> + * Returns an array of <code>Type</code> objects, which gives + * the parameters of this type. + * </p> + * <p> + * <strong>Note</code>: the returned array may be empty. This + * occurs if the supposed <code>ParameterizedType</code> is simply + * a normal type wrapped inside a parameterized type. + * </p> + * + * @return an array of <code>Type</code>s, representing the arguments + * of this type. + * @throws TypeNotPresentException if any of the types referred to by + * the parameters of this type do not actually exist. + * @throws MalformedParameterizedTypeException if any of the types + * refer to a type which can not be instantiated. + */ + Type[] getActualTypeArguments(); + + /** + * Returns the type of which this type is a member. For example, + * in <code>Top<String>.Bottom<Integer></code>, + * <code>Bottom<Integer></code> is a member of + * <code>Top<String></code>, and so the latter is returned + * by this method. Calling this method on top-level types (such as + * <code>Top<String></code>) returns null. + * + * @return the type which owns this type. + * @throws TypeNotPresentException if the owner type referred to by + * this type do not actually exist. + * @throws MalformedParameterizedTypeException if the owner type + * referred to by this type can not be instantiated. + */ + Type getOwnerType(); + + /** + * Returns a version of this type without parameters, which corresponds + * to the class or interface which declared the type. For example, + * the raw type corresponding to <code>List<Double></code> + * is <code>List</code>, which was declared by the <code>List</code> + * class. + * + * @return the raw variant of this type (i.e. the type without + * parameters). + */ + Type getRawType(); + +} |