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15 package jfun.yan;
16
17 import jfun.util.SerializableMethod;
18 import jfun.yan.function.Function;
19
20
28 final class FloatingMethodFunction implements Function {
29 private final Class  type;
30 private final SerializableMethod mtd;
31 public boolean isConcrete(){
32 return false;
33 }
34 FloatingMethodFunction(final Class type,
35 final java.lang.reflect.Method mtd) {
36 this.type = type;
37 this.mtd = new SerializableMethod(mtd);
38 }
39 public Class getReturnType() {
40 return mtd.getMethod().getReturnType();
41 }
42 public Class [] getParameterTypes() {
43 final Class [] ptypes = mtd.getMethod().getParameterTypes();
44 final Class [] r = new Class [ptypes.length+1];
45 r[0] = type;
46 for(int i=1; i<r.length;i++){
47 r[i] = ptypes[i-1];
48 }
49 return r;
50 }
51 public Object call(Object [] args) throws Throwable {
52 final Object [] nargs = new Object [args.length-1];
53 for(int i=0; i<nargs.length; i++){
54 nargs[i] = args[i+1];
55 }
56 try{
57 return mtd.getMethod().invoke(args[0], nargs);
58 }
59 catch(java.lang.reflect.InvocationTargetException e){
60 throw Utils.wrapInvocationException(e);
61 }
62 }
63
64 public boolean equals(Object obj) {
65 if(obj instanceof FloatingMethodFunction){
66 final FloatingMethodFunction other = (FloatingMethodFunction)obj;
67 return type.equals(other.type) && mtd.equals(other.mtd);
68 }
69 else return false;
70 }
71 public int hashCode() {
72 return type.hashCode()*31+mtd.hashCode();
73 }
74 public String toString() {
75 return jfun.util.Misc.getTypeName(type)
76 + "::" + mtd.getMethod().getName()
77 + jfun.util.StringUtils.listString("(",",",")",
78 mtd.getMethod().getParameterTypes());
79 }
80 public String getName(){
81 return mtd.getMethod().getName();
82 }
83 }
84 |
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