|
1 package jfun.yan.xml;
2
3 import jfun.yan.Component;
4 import jfun.yan.SimpleComponent;
5
6
12 final class NutsContinuation implements NutsFunction {
13 private final Object  id;
14 private final String name;
15 private final Location loc;
16 private static final String [] pnames = {Constants.RESULT};
17
18 NutsContinuation(String name, Location loc, Object id) {
19 this.id = id;
20 this.loc = loc;
21 this.name = name;
22 }
23
24 public Object call(Object [] args) {
25 final Object result = args[0];
26 return new SimpleComponent(null){
27 public Object create(){
28 throw getContinuation(id, result);
29 }
30 public String toString(){
31 return name + " " + result;
32 }
33 };
34 }
35
36 public String getName() {
37 return name;
38 }
39
40 public int getParameterCount() {
41 return 1;
42 }
43
44 public Class getReturnType() {
45 return Component.class;
46 }
47
48 public String [] getParameterNames() {
49 return pnames;
50 }
51
52 public Location getLocation() {
53 return loc;
54 }
55
56 public boolean equals(Object obj) {
57 if(obj instanceof NutsContinuation){
58 final NutsContinuation other = (NutsContinuation)obj;
59 return id==other.id;
60 }
61 else return false;
62 }
63
64 public int hashCode() {
65 return System.identityHashCode(id);
66 }
67
68 public String toString() {
69 return name;
70 }
71 private static ContinuationEscapeException getContinuation(Object id, Object result){
72 final ContinuationEscapeException ex = (ContinuationEscapeException)
73 exception.get();
74 ex.clearResolutionTrace();
75 ex.setId(id);
76 ex.setResult(result);
77 return ex;
78 }
79 private static final ThreadLocal exception = new ThreadLocal (){
80 protected Object initialValue() {
81 return new ContinuationEscapeException("continuation");
82 }
83 };
84 }
85 |
Popular Tags |
Java API By Example, From Geeks To Geeks.