Mercurial > jdk8-mips64-public > langtools / file revision

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  * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code 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

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 package javax.lang.model.element;

 import java.util.List;

 import javax.lang.model.type.*;

 import javax.lang.model.util.*;

 /**

  * Represents a class or interface program element.  Provides access

  * to information about the type and its members.  Note that an enum

  * type is a kind of class and an annotation type is a kind of

  * interface.

  *

  * <p> <a name="ELEM_VS_TYPE"></a>

  * While a {@code TypeElement} represents a class or interface

  * <i>element</i>, a {@link DeclaredType} represents a class

  * or interface <i>type</i>, the latter being a use

  * (or <i>invocation</i>) of the former.

  * The distinction is most apparent with generic types,

  * for which a single element can define a whole

  * family of types.  For example, the element

  * {@code java.util.Set} corresponds to the parameterized types

  * {@code java.util.Set<String>} and {@code java.util.Set<Number>}

  * (and many others), and to the raw type {@code java.util.Set}.

  *

  * <p> Each method of this interface that returns a list of elements

  * will return them in the order that is natural for the underlying

  * source of program information.  For example, if the underlying

  * source of information is Java source code, then the elements will be

  * returned in source code order.

  *

  * @author Joseph D. Darcy

  * @author Scott Seligman

  * @author Peter von der Ahé

  * @see DeclaredType

  * @since 1.6

  */

 public interface TypeElement extends Element, Parameterizable, QualifiedNameable {

     /**

      * {@inheritDoc}

      *

      * <p> Note that as a particular instance of the {@linkplain

      * javax.lang.model.element general accuracy requirements} and the

      * ordering behavior required of this interface, the list of

      * enclosed elements will be returned in the natural order for the

      * originating source of information about the type.  For example,

      * if the information about the type is originating from a source

      * file, the elements will be returned in source code order.

      * (However, in that case the the ordering of synthesized

      * elements, such as a default constructor, is not specified.)

      *

      * @return the enclosed elements in proper order, or an empty list if none

      */

     List<? extends Element> getEnclosedElements();

     /**

      * Returns the <i>nesting kind</i> of this type element.

      *

      * @return the nesting kind of this type element

      */

     NestingKind getNestingKind();

     /**

      * Returns the fully qualified name of this type element.

      * More precisely, it returns the <i>canonical</i> name.

      * For local and anonymous classes, which do not have canonical names,

      * an empty name is returned.

      *

      * <p>The name of a generic type does not include any reference

      * to its formal type parameters.

      * For example, the fully qualified name of the interface

      * {@code java.util.Set<E>} is "{@code java.util.Set}".

      * Nested types use "{@code .}" as a separator, as in

      * "{@code java.util.Map.Entry}".

      *

      * @return the fully qualified name of this class or interface, or

      * an empty name if none

      *

      * @see Elements#getBinaryName

      * @jls3 6.7 Fully Qualified Names and Canonical Names

      */

     Name getQualifiedName();

     /**

      * Returns the simple name of this type element.

      *

      * For an anonymous class, an empty name is returned.

      *

      * @return the simple name of this class or interface,

      * an empty name for an anonymous class

      *

      */

     @Override

     Name getSimpleName();

     /**

      * Returns the direct superclass of this type element.

      * If this type element represents an interface or the class

      * {@code java.lang.Object}, then a {@link NoType}

      * with kind {@link TypeKind#NONE NONE} is returned.

      *

      * @return the direct superclass, or a {@code NoType} if there is none

      */

     TypeMirror getSuperclass();

     /**

      * Returns the interface types directly implemented by this class

      * or extended by this interface.

      *

      * @return the interface types directly implemented by this class

      * or extended by this interface, or an empty list if there are none

      */

     List<? extends TypeMirror> getInterfaces();

     /**

      * Returns the formal type parameters of this type element

      * in declaration order.

      *

      * @return the formal type parameters, or an empty list

      * if there are none

      */

     List<? extends TypeParameterElement> getTypeParameters();

     /**

      * Returns the package of a top-level type and returns the

      * immediately lexically enclosing element for a {@linkplain

      * NestingKind#isNested nested} type.

      *

      * @return the package of a top-level type, the immediately

      * lexically enclosing element for a nested type

      */

     @Override

     Element getEnclosingElement();

 }