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package javax.lang.model.util;


import java.util.List;
import javax.lang.model.element.*;

import javax.lang.model.type.TypeMirror;
import static javax.lang.model.SourceVersion.*;
import javax.lang.model.SourceVersion;
import javax.annotation.processing.SupportedSourceVersion;

A simple visitor for annotation values with default behavior appropriate for the RELEASE_6 source version. Visit methods call defaultAction passing their arguments to defaultAction's corresponding parameters. 
 Methods in this class may be overridden subject to their general contract. Note that annotating methods in concrete subclasses with @Override will help ensure that methods are overridden as intended. 
 WARNING: The AnnotationValueVisitor interface implemented by this class may have methods added to it in the future to accommodate new, currently unknown, language structures added to future versions of the Java™ programming language. Therefore, methods whose names begin with "visit" may be added to this class in the future; to avoid incompatibilities, classes which extend this class should not declare any instance methods with names beginning with "visit". 
When such a new visit method is added, the default implementation in this class will be to call the visitUnknown method. A new simple annotation value visitor class will also be introduced to correspond to the new language level; this visitor will have different default behavior for the visit method in question. When the new visitor is introduced, all or portions of this visitor may be deprecated. 
Author:
Joseph D. Darcy, Scott Seligman, Peter von der Ahé
Type parameters:
<R> – the return type of this visitor's methods
<P> – the type of the additional parameter to this visitor's methods.
See Also:
SimpleAnnotationValueVisitor7
SimpleAnnotationValueVisitor8
SimpleAnnotationValueVisitor9
Since:
1.6/**
 * A simple visitor for annotation values with default behavior
 * appropriate for the {@link SourceVersion#RELEASE_6 RELEASE_6}
 * source version.  Visit methods call {@link
 * #defaultAction} passing their arguments to {@code defaultAction}'s
 * corresponding parameters.
 *
 * <p> Methods in this class may be overridden subject to their
 * general contract.  Note that annotating methods in concrete
 * subclasses with {@link java.lang.Override @Override} will help
 * ensure that methods are overridden as intended.
 *
 * <p> <b>WARNING:</b> The {@code AnnotationValueVisitor} interface
 * implemented by this class may have methods added to it in the
 * future to accommodate new, currently unknown, language structures
 * added to future versions of the Java&trade; programming language.
 * Therefore, methods whose names begin with {@code "visit"} may be
 * added to this class in the future; to avoid incompatibilities,
 * classes which extend this class should not declare any instance
 * methods with names beginning with {@code "visit"}.
 *
 * <p>When such a new visit method is added, the default
 * implementation in this class will be to call the {@link
 * #visitUnknown visitUnknown} method.  A new simple annotation
 * value visitor class will also be introduced to correspond to the
 * new language level; this visitor will have different default
 * behavior for the visit method in question.  When the new visitor is
 * introduced, all or portions of this visitor may be deprecated.
 *
 * @param <R> the return type of this visitor's methods
 * @param <P> the type of the additional parameter to this visitor's methods.
 *
 * @author Joseph D. Darcy
 * @author Scott Seligman
 * @author Peter von der Ah&eacute;
 *
 * @see SimpleAnnotationValueVisitor7
 * @see SimpleAnnotationValueVisitor8
 * @see SimpleAnnotationValueVisitor9
 * @since 1.6
 */
@SupportedSourceVersion(RELEASE_6)
public class SimpleAnnotationValueVisitor6<R, P>
    extends AbstractAnnotationValueVisitor6<R, P> {

    
Default value to be returned; 
defaultAction returns this value unless the method is overridden. /**
     * Default value to be returned; {@link #defaultAction
     * defaultAction} returns this value unless the method is
     * overridden.
     */
    protected final R DEFAULT_VALUE;

    
Constructor for concrete subclasses; uses null for the default value. 
Deprecated:
Release 6 is obsolete; update to a visitor for a newer
release level./**
     * Constructor for concrete subclasses; uses {@code null} for the
     * default value.
     * @deprecated Release 6 is obsolete; update to a visitor for a newer
     * release level.
     */
    @Deprecated(since="9")
    protected SimpleAnnotationValueVisitor6() {
        super();
        DEFAULT_VALUE = null;
    }

    
Constructor for concrete subclasses; uses the argument for the
default value.
Params:
defaultValue – the value to assign to SimpleAnnotationValueVisitor6<R,P>.DEFAULT_VALUE
Deprecated:
Release 6 is obsolete; update to a visitor for a newer
release level./**
     * Constructor for concrete subclasses; uses the argument for the
     * default value.
     *
     * @param defaultValue the value to assign to {@link #DEFAULT_VALUE}
     * @deprecated Release 6 is obsolete; update to a visitor for a newer
     * release level.
     */
    @Deprecated(since="9")
    protected SimpleAnnotationValueVisitor6(R defaultValue) {
        super();
        DEFAULT_VALUE = defaultValue;
    }

    
The default action for visit methods.
Params:
o – the value of the annotation
p – a visitor-specified parameter
Implementation Requirements:
The implementation in this class just returns SimpleAnnotationValueVisitor6<R,P>.DEFAULT_VALUE; subclasses will commonly override this method.
Returns:
DEFAULT_VALUE unless overridden/**
     * The default action for visit methods.
     *
     * @implSpec The implementation in this class just returns {@link
     * #DEFAULT_VALUE}; subclasses will commonly override this method.
     *
     * @param o the value of the annotation
     * @param p a visitor-specified parameter
     * @return {@code DEFAULT_VALUE} unless overridden
     */
    protected R defaultAction(Object o, P p) {
        return DEFAULT_VALUE;
    }

    
{@inheritDoc}
Params:
b – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param b {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitBoolean(boolean b, P p) {
        return defaultAction(b, p);
    }

    
{@inheritDoc}
Params:
b – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param b {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitByte(byte b, P p) {
        return defaultAction(b, p);
    }

    
{@inheritDoc}
Params:
c – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param c {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitChar(char c, P p) {
        return defaultAction(c, p);
    }

    
{@inheritDoc}
Params:
d – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     *
     * @param d {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitDouble(double d, P p) {
        return defaultAction(d, p);
    }

    
{@inheritDoc}
Params:
f – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     *
     * @param f {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitFloat(float f, P p) {
        return defaultAction(f, p);
    }

    
{@inheritDoc}
Params:
i – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param i {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitInt(int i, P p) {
        return defaultAction(i, p);
    }

    
{@inheritDoc}
Params:
i – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param i {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitLong(long i, P p) {
        return defaultAction(i, p);
    }

    
{@inheritDoc}
Params:
s – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param s {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitShort(short s, P p) {
        return defaultAction(s, p);
    }

    
{@inheritDoc}
Params:
s – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param s {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitString(String s, P p) {
        return defaultAction(s, p);
    }

    
{@inheritDoc}
Params:
t – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param t {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitType(TypeMirror t, P p) {
        return defaultAction(t, p);
    }

    
{@inheritDoc}
Params:
c – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param c {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitEnumConstant(VariableElement c, P p) {
        return defaultAction(c, p);
    }

    
{@inheritDoc}
Params:
a – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param a {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitAnnotation(AnnotationMirror a, P p) {
        return defaultAction(a, p);
    }

    
{@inheritDoc}
Params:
vals – {@inheritDoc}
p – {@inheritDoc}
Implementation Requirements:
This implementation calls defaultAction.
Returns:
 the result of defaultAction/**
     * {@inheritDoc}
     *
     * @implSpec This implementation calls {@code defaultAction}.
     *
     * @param vals {@inheritDoc}
     * @param p {@inheritDoc}
     * @return  the result of {@code defaultAction}
     */
    public R visitArray(List<? extends AnnotationValue> vals, P p) {
        return defaultAction(vals, p);
    }
}