1 package edu.berkeley.sbp.bind;
3 import edu.berkeley.sbp.util.*;
4 import edu.berkeley.sbp.*;
5 import edu.berkeley.sbp.chr.*;
6 import edu.berkeley.sbp.bind.*;
8 import java.lang.annotation.*;
9 import java.lang.reflect.*;
11 import static edu.berkeley.sbp.util.Reflection.*;
13 public abstract class Bindable {
15 public abstract String getSimpleName();
16 public abstract String toString();
17 public abstract <A extends Annotation> A getAnnotation(Class<A> c);
18 public abstract Object impose(Object[] fields);
19 public boolean isAnnotationPresent(Class<? extends Annotation> c) { return getAnnotation(c) != null; }
21 public abstract Annotation[][] getArgAnnotations();
22 public abstract String[] getArgNames();
24 public static Bindable create(Object o) {
25 if (o instanceof Class) return new BindableClass((Class)o);
26 if (o instanceof Method) return new BindableMethod((Method)o);
27 if (o instanceof Constructor) return new BindableConstructor((Constructor)o);
31 private static class BindableMethod extends Bindable {
32 private final Method _method;
33 public String toString() { return "BindableMethod["+_method+"]"; }
34 public BindableMethod(Method _method) { this._method = _method; }
35 public String getSimpleName() { return _method.getName(); }
36 public <A extends Annotation> A getAnnotation(Class<A> c) { return _method.getAnnotation(c); }
37 public Object impose(Object[] fields) { return Reflection.impose(_method, fields); }
38 public Annotation[][] getArgAnnotations() { return _method.getParameterAnnotations(); }
39 public String[] getArgNames() { return new String[_method.getParameterTypes().length]; }
42 private static class BindableConstructor extends Bindable {
43 private final Constructor _constructor;
44 public String toString() { return "BindableConstructor["+_constructor+"]"; }
45 public BindableConstructor(Constructor _constructor) { this._constructor = _constructor; }
46 public String getSimpleName() { return _constructor.getName(); }
47 public <A extends Annotation> A getAnnotation(Class<A> c) { return _constructor.getAnnotation(c); }
48 public Object impose(Object[] fields) { return Reflection.impose(_constructor, fields); }
49 public Annotation[][] getArgAnnotations() { return _constructor.getParameterAnnotations(); }
50 public String[] getArgNames() { return new String[_constructor.getParameterTypes().length]; }
53 private static class BindableClass extends Bindable {
54 private final Class _class;
55 public String toString() { return "BindableClass["+_class+"]"; }
56 public BindableClass(Class _class) { this._class = _class; }
57 public String getSimpleName() { return _class.getSimpleName(); }
58 public <A extends Annotation> A getAnnotation(Class<A> c) { return (A)_class.getAnnotation(c); }
59 public Object impose(Object[] fields) { return Reflection.impose(_class, fields); }
60 public Annotation[][] getArgAnnotations() {
61 Field[] fields = _class.getFields();
62 Annotation[][] ret = new Annotation[fields.length][];
63 for(int i=0; i<fields.length; i++)
64 ret[i] = fields[i].getAnnotations();
67 public String[] getArgNames() {
68 Field[] fields = _class.getFields();
69 String[] ret = new String[fields.length];
70 for(int i=0; i<fields.length; i++)
71 ret[i] = fields[i].getName();