Mercurial > jdk8-mips64-public > nashorn / file comparison

comparison: src/jdk/nashorn/internal/runtime/ListAdapter.java

src/jdk/nashorn/internal/runtime/ListAdapter.java

changeset 1394
07f32a26bc1e
parent 1384
b8deeb25baec
child 1490
d85f981c8cf8
equal deleted inserted replaced
1393:dcbf5e2121e3 1394:07f32a26bc1e
50 * array, while in Java {@code Deque} they operate on the front of the queue and as such the Java dequeue 50 * array, while in Java {@code Deque} they operate on the front of the queue and as such the Java dequeue
51 * {@link #push(Object)} and {@link #pop()} operations will translate to {@code unshift} and {@code shift} script 51 * {@link #push(Object)} and {@link #pop()} operations will translate to {@code unshift} and {@code shift} script
52 * operations respectively, while {@link #addLast(Object)} and {@link #removeLast()} will translate to {@code push} and 52 * operations respectively, while {@link #addLast(Object)} and {@link #removeLast()} will translate to {@code push} and
53 * {@code pop}. 53 * {@code pop}.
54 */ 54 */
55 public final class ListAdapter extends AbstractList<Object> implements RandomAccess, Deque<Object> { 55 public class ListAdapter extends AbstractList<Object> implements RandomAccess, Deque<Object> {
56 // Invoker creator for methods that add to the start or end of the list: PUSH and UNSHIFT. Takes fn, this, and value, returns void. 56 // Invoker creator for methods that add to the start or end of the list: PUSH and UNSHIFT. Takes fn, this, and value, returns void.
57 private static final Callable<MethodHandle> ADD_INVOKER_CREATOR = invokerCreator(void.class, Object.class, JSObject.class, Object.class); 57 private static final Callable<MethodHandle> ADD_INVOKER_CREATOR = invokerCreator(void.class, Object.class, JSObject.class, Object.class);
58 58
59 // PUSH adds to the start of the list 59 // PUSH adds to the start of the list
60 private static final Object PUSH = new Object(); 60 private static final Object PUSH = new Object();
76 // SPLICE can also be used to remove values from the middle of the list. 76 // SPLICE can also be used to remove values from the middle of the list.
77 private static final Object SPLICE_REMOVE = new Object(); 77 private static final Object SPLICE_REMOVE = new Object();
78 private static final Callable<MethodHandle> SPLICE_REMOVE_INVOKER_CREATOR = invokerCreator(void.class, Object.class, JSObject.class, int.class, int.class); 78 private static final Callable<MethodHandle> SPLICE_REMOVE_INVOKER_CREATOR = invokerCreator(void.class, Object.class, JSObject.class, int.class, int.class);
79 79
80 /** wrapped object */ 80 /** wrapped object */
81 private final JSObject obj; 81 final JSObject obj;
82 private final Global global; 82 private final Global global;
83 83
84 // allow subclasses only in this package 84 // allow subclasses only in this package
85 ListAdapter(final JSObject obj) { 85 ListAdapter(final JSObject obj, final Global global) {
86 if (global == null) {
87 throw new IllegalStateException(ECMAErrors.getMessage("list.adapter.null.global"));
88 }
89
86 this.obj = obj; 90 this.obj = obj;
87 this.global = getGlobalNonNull(); 91 this.global = global;
88 }
89
90 private static Global getGlobalNonNull() {
91 final Global global = Context.getGlobal();
92 if (global != null) {
93 return global;
94 }
95 throw new IllegalStateException(ECMAErrors.getMessage("list.adapter.null.global"));
96 } 92 }
97 93
98 /** 94 /**
99 * Factory to create a ListAdapter for a given script object. 95 * Factory to create a ListAdapter for a given script object.
100 * 96 *
101 * @param obj script object to wrap as a ListAdapter 97 * @param obj script object to wrap as a ListAdapter
102 * @return A ListAdapter wrapper object 98 * @return A ListAdapter wrapper object
103 */ 99 */
104 public static ListAdapter create(final Object obj) { 100 public static ListAdapter create(final Object obj) {
105 return new ListAdapter(getJSObject(obj)); 101 final Global global = Context.getGlobal();
106 } 102 return new ListAdapter(getJSObject(obj, global), global);
107 103 }
108 private static JSObject getJSObject(final Object obj) { 104
105 private static JSObject getJSObject(final Object obj, final Global global) {
109 if (obj instanceof ScriptObject) { 106 if (obj instanceof ScriptObject) {
110 return (JSObject)ScriptObjectMirror.wrap(obj, Context.getGlobal()); 107 return (JSObject)ScriptObjectMirror.wrap(obj, global);
111 } else if (obj instanceof JSObject) { 108 } else if (obj instanceof JSObject) {
112 return (JSObject)obj; 109 return (JSObject)obj;
113 } 110 }
114 throw new IllegalArgumentException("ScriptObject or JSObject expected"); 111 throw new IllegalArgumentException("ScriptObject or JSObject expected");
115 } 112 }

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