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1 package jfun.yan.xml.nuts.optional;
2
3 import java.lang.reflect.Array  ;
4 import java.util.Iterator ;
5 import java.util.List ;
6
7 import jfun.util.Misc;
8 import jfun.yan.Binder;
9 import jfun.yan.Component;
10 import jfun.yan.Creator;
11 import jfun.yan.xml.NutsUtils;
12 import jfun.yan.xml.nuts.DelegatingNut;
13
14
22 public class WithArgumentsNut extends DelegatingNut {
23 private Component args;
24
25 public Component getArgs() {
26 checkMandatory("args", args);
27 return args;
28 }
29
30 public void setArgs(Component args) {
31 this.args = args;
32 }
33
34 public Component eval(){
35 final Component a = getArgs();
36 final Component cc = getMandatory();
37
38 Component result = a.bind(new Binder(){
39 public Creator bind(Object v) throws Throwable {
40 if(v==null) return cc;
41 if(v.getClass().isArray()){
42 final int sz = Array.getLength(v);
43 final Component[] cargs = new Component[sz];
44 if(v instanceof Object []){
45 final Object [] arr = (Object [])v;
46 for(int i=0; i<cargs.length; i++){
47 cargs[i] = NutsUtils.asComponent(arr[i]);
48 }
49 }
50 else{
51 for(int i=0; i<cargs.length; i++){
52 cargs[i] = NutsUtils.asComponent(Array.get(v, i));
53 }
54 }
55 return cc.withArguments(cargs);
56 }
57 else if(v instanceof List ){
58 final List list = (List )v;
59 final int sz = list.size();
60 final Component[] cargs = new Component[sz];
61 int i=0;
62 for(Iterator it=list.iterator(); it.hasNext(); i++){
63 cargs[i] = NutsUtils.asComponent(it.next());
64 }
65 return cc.withArguments(cargs);
66 }
67 else{
68 throw raise(Misc.getTypeName(v.getClass())+
69 " cannot be used as argument list");
70 }
71 }
72 });
73 final Class type = cc.getType();
74 if(type!=null)
75 result = cast(type, result);
76 return result;
77 }
78
79 }
80 |
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