+package edu.berkeley.sbp.bind;
+
+import edu.berkeley.sbp.util.*;
+import edu.berkeley.sbp.*;
+import edu.berkeley.sbp.chr.*;
+import edu.berkeley.sbp.bind.*;
+import java.util.*;
+import java.lang.annotation.*;
+import java.lang.reflect.*;
+import java.io.*;
+import static edu.berkeley.sbp.util.Reflection.*;
+
+public abstract class Bindable {
+
+ public abstract String getSimpleName();
+ public abstract String toString();
+ public abstract <A extends Annotation> A getAnnotation(Class<A> c);
+ public abstract Object impose(Object[] fields);
+ public boolean isAnnotationPresent(Class<? extends Annotation> c) { return getAnnotation(c) != null; }
+
+ public abstract Annotation[][] getArgAnnotations();
+ public abstract String[] getArgNames();
+
+ public static Bindable create(Object o) {
+ if (o instanceof Class) return new BindableClass((Class)o);
+ if (o instanceof Method) return new BindableMethod((Method)o);
+ if (o instanceof Constructor) return new BindableConstructor((Constructor)o);
+ return null;
+ }
+
+ private static class BindableMethod extends Bindable {
+ private final Method _method;
+ public String toString() { return "BindableMethod["+_method+"]"; }
+ public BindableMethod(Method _method) { this._method = _method; }
+ public String getSimpleName() { return _method.getName(); }
+ public <A extends Annotation> A getAnnotation(Class<A> c) { return _method.getAnnotation(c); }
+ public Object impose(Object[] fields) { return Reflection.impose(_method, fields); }
+ public Annotation[][] getArgAnnotations() { return _method.getParameterAnnotations(); }
+ public String[] getArgNames() { return new String[_method.getParameterTypes().length]; }
+ }
+
+ private static class BindableConstructor extends Bindable {
+ private final Constructor _constructor;
+ public String toString() { return "BindableConstructor["+_constructor+"]"; }
+ public BindableConstructor(Constructor _constructor) { this._constructor = _constructor; }
+ public String getSimpleName() { return _constructor.getName(); }
+ public <A extends Annotation> A getAnnotation(Class<A> c) { return _constructor.getAnnotation(c); }
+ public Object impose(Object[] fields) { return Reflection.impose(_constructor, fields); }
+ public Annotation[][] getArgAnnotations() { return _constructor.getParameterAnnotations(); }
+ public String[] getArgNames() { return new String[_constructor.getParameterTypes().length]; }
+ }
+
+ private static class BindableClass extends Bindable {
+ private final Class _class;
+ public String toString() { return "BindableClass["+_class+"]"; }
+ public BindableClass(Class _class) { this._class = _class; }
+ public String getSimpleName() { return _class.getSimpleName(); }
+ public <A extends Annotation> A getAnnotation(Class<A> c) { return (A)_class.getAnnotation(c); }
+ public Object impose(Object[] fields) { return Reflection.impose(_class, fields); }
+ public Annotation[][] getArgAnnotations() {
+ Field[] fields = _class.getFields();
+ Annotation[][] ret = new Annotation[fields.length][];
+ for(int i=0; i<fields.length; i++)
+ ret[i] = fields[i].getAnnotations();
+ return ret;
+ }
+ public String[] getArgNames() {
+ Field[] fields = _class.getFields();
+ String[] ret = new String[fields.length];
+ for(int i=0; i<fields.length; i++)
+ ret[i] = fields[i].getName();
+ return ret;
+ }
+ }
+
+}