93 * @since 1.6
94 */
95 @SupportedSourceVersion(RELEASE_6)
96 public class ElementScanner6<R, P> extends AbstractElementVisitor6<R, P> {
97 /**
98 * The specified default value.
99 */
100 protected final R DEFAULT_VALUE;
101
102 /**
103 * Constructor for concrete subclasses; uses {@code null} for the
104 * default value.
105 */
106 protected ElementScanner6(){
107 DEFAULT_VALUE = null;
108 }
109
110 /**
111 * Constructor for concrete subclasses; uses the argument for the
112 * default value.
113 */
114 protected ElementScanner6(R defaultValue){
115 DEFAULT_VALUE = defaultValue;
116 }
117
118 /**
119 * Iterates over the given elements and calls {@link
120 * #scan(Element, Object) scan(Element, P)} on each one. Returns
121 * the result of the last call to {@code scan} or {@code
122 * DEFAULT_VALUE} for an empty iterable.
123 *
124 * @param iterable the elements to scan
125 * @param p additional parameter
126 * @return the scan of the last element or {@code DEFAULT_VALUE} if no elements
127 */
128 public final R scan(Iterable<? extends Element> iterable, P p) {
129 R result = DEFAULT_VALUE;
130 for(Element e : iterable)
131 result = scan(e, p);
132 return result;
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93 * @since 1.6
94 */
95 @SupportedSourceVersion(RELEASE_6)
96 public class ElementScanner6<R, P> extends AbstractElementVisitor6<R, P> {
97 /**
98 * The specified default value.
99 */
100 protected final R DEFAULT_VALUE;
101
102 /**
103 * Constructor for concrete subclasses; uses {@code null} for the
104 * default value.
105 */
106 protected ElementScanner6(){
107 DEFAULT_VALUE = null;
108 }
109
110 /**
111 * Constructor for concrete subclasses; uses the argument for the
112 * default value.
113 *
114 * @param defaultValue the default value
115 */
116 protected ElementScanner6(R defaultValue){
117 DEFAULT_VALUE = defaultValue;
118 }
119
120 /**
121 * Iterates over the given elements and calls {@link
122 * #scan(Element, Object) scan(Element, P)} on each one. Returns
123 * the result of the last call to {@code scan} or {@code
124 * DEFAULT_VALUE} for an empty iterable.
125 *
126 * @param iterable the elements to scan
127 * @param p additional parameter
128 * @return the scan of the last element or {@code DEFAULT_VALUE} if no elements
129 */
130 public final R scan(Iterable<? extends Element> iterable, P p) {
131 R result = DEFAULT_VALUE;
132 for(Element e : iterable)
133 result = scan(e, p);
134 return result;
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