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1 package jfun.yan.xml;
2
3
4
5 import java.util.ArrayList  ;
6 import java.util.Set ;
7
8 final class Import implements LocationAware{
9 private final Filter filter;
10 private final Module importee;
11 private final String prefix;
12 private final Location loc;
13 private final String [] keys;
14 Import(String prefix, Filter filter, Module parent,
15 final Location loc) {
16 this.prefix = prefix;
17 this.filter = filter;
18 this.importee = parent;
19 this.loc = loc;
20 this.keys = findKeys();
21 }
22 String [] getKeys(){
23 return keys;
24 }
25 Module getImported(){
26 return importee;
27 }
28 private String [] findKeys(){
29 final String [] exported = importee.getExports();
30 final StringPredicate pred = filter.getPredicate();
31 final ArrayList buf = new ArrayList (exported.length);
32 for(int i=0; i<exported.length; i++){
33 final String key = exported[i];
34 if(pred.isString(key)){
35 buf.add(key);
36 }
37 }
38 final String [] ret = new String [buf.size()];
39 buf.toArray(ret);
40 return ret;
41 }
42 Filter getFilter() {
43 return filter;
44 }
45
46 String getPrefix(){
47 return prefix;
48 }
49 public Location getLocation(){
50 return loc;
51 }
52 private Registry filter(final Registry reg){
53 final Set set = MyUtil.getNameSet(keys);
55 return new Registry(){
56 public void put(String key, Object obj, Location loc){
57 if(set.contains(key)){
58 reg.put(prefix+key, obj, loc);
59 }
60 }
61 };
62 }
63 void register(Registry reg){
64 importee.register(filter(reg));
65 }
66 }
67 |
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