169 lines
6.5 KiB
Java
Executable File
169 lines
6.5 KiB
Java
Executable File
/*
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* @(#)Declaration.java 1.6 04/07/16
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*
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* Copyright (c) 2004, Sun Microsystems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Sun Microsystems, Inc. nor the names of
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* its contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.sun.mirror.declaration;
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import java.lang.annotation.Annotation;
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import java.util.Collection;
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import com.sun.mirror.type.*;
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import com.sun.mirror.util.*;
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/**
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* Represents the declaration of a program element such as a package,
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* class, or method. Each declaration represents a static, language-level
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* construct (and not, for example, a runtime construct of the virtual
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* machine), and typically corresponds one-to-one with a particular
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* fragment of source code.
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* <p/>
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* <p> Declarations should be compared using the {@link #equals(Object)}
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* method. There is no guarantee that any particular declaration will
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* always be represented by the same object.
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*
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* @author Joseph D. Darcy
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* @author Scott Seligman
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* @version 1.6 04/07/16
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* @see Declarations
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* @see TypeMirror
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* @since 1.5
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*/
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public interface Declaration {
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/**
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* Tests whether an object represents the same declaration as this.
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*
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* @param obj the object to be compared with this declaration
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* @return <tt>true</tt> if the specified object represents the same
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* declaration as this
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*/
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boolean equals(Object obj);
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/**
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* Returns the text of the documentation ("javadoc") comment of
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* this declaration.
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*
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* @return the documentation comment of this declaration, or <tt>null</tt>
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* if there is none
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*/
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String getDocComment();
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/**
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* Returns the annotations that are directly present on this declaration.
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*
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* @return the annotations directly present on this declaration;
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* an empty collection if there are none
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*/
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Collection<AnnotationMirror> getAnnotationMirrors();
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/**
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* Returns the annotation of this declaration having the specified
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* type. The annotation may be either inherited or directly
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* present on this declaration.
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* <p/>
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* <p> The annotation returned by this method could contain an element
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* whose value is of type <tt>Class</tt>.
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* This value cannot be returned directly: information necessary to
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* locate and load a class (such as the class loader to use) is
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* not available, and the class might not be loadable at all.
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* Attempting to read a <tt>Class</tt> object by invoking the relevant
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* method on the returned annotation
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* will result in a {@link MirroredTypeException},
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* from which the corresponding {@link TypeMirror} may be extracted.
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* Similarly, attempting to read a <tt>Class[]</tt>-valued element
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* will result in a {@link MirroredTypesException}.
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* <p/>
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* <blockquote>
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* <i>Note:</i> This method is unlike
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* others in this and related interfaces. It operates on run-time
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* reflective information -- representations of annotation types
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* currently loaded into the VM -- rather than on the mirrored
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* representations defined by and used throughout these
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* interfaces. It is intended for callers that are written to
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* operate on a known, fixed set of annotation types.
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* </blockquote>
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*
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* @param <A> the annotation type
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* @param annotationType the <tt>Class</tt> object corresponding to
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* the annotation type
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* @return the annotation of this declaration having the specified type
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* @see #getAnnotationMirrors()
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*/
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<A extends Annotation> A getAnnotation(Class<A> annotationType);
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/**
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* Returns the modifiers of this declaration, excluding annotations.
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* Implicit modifiers, such as the <tt>public</tt> and <tt>static</tt>
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* modifiers of interface members, are included.
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*
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* @return the modifiers of this declaration in undefined order;
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* an empty collection if there are none
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*/
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Collection<Modifier> getModifiers();
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/**
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* Returns the simple (unqualified) name of this declaration.
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* The name of a generic type does not include any reference
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* to its formal type parameters.
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* For example, the simple name of the interface declaration
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* {@code java.util.Set<E>} is <tt>"Set"</tt>.
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* If this declaration represents the empty package, an empty
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* string is returned.
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* If it represents a constructor, the simple name of its
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* declaring class is returned.
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*
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* @return the simple name of this declaration
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*/
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String getSimpleName();
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/**
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* Returns the source position of the beginning of this declaration.
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* Returns <tt>null</tt> if the position is unknown or not applicable.
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* <p/>
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* <p> This source position is intended for use in providing
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* diagnostics, and indicates only approximately where a declaration
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* begins.
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*
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* @return the source position of the beginning of this declaration,
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* or null if the position is unknown or not applicable
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*/
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SourcePosition getPosition();
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/**
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* Applies a visitor to this declaration.
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*
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* @param v the visitor operating on this declaration
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*/
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void accept(DeclarationVisitor v);
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}
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