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 implements ToJava {
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();
23 public abstract Class[] getArgTypes();
25 public static Bindable create(Object o) {
26 if (o instanceof Class) return new BindableClass((Class)o);
27 if (o instanceof Method) return new BindableMethod((Method)o);
28 if (o instanceof Constructor) return new BindableConstructor((Constructor)o);
32 public Binding createBinding() {
33 return new Binding() {
34 public Object invoke(Object[] o) {
39 public Binding createBinding(final int[] map) {
40 return new Binding() {
41 public Object invoke(Object[] o) {
43 for(int i=0; i<map.length; i++) max = Math.max(map[i], max);
44 Object[] o2 = new Object[max+1];
45 for(int i=0; i<o.length; i++) o2[map[i]] = o[i];
51 private static class BindableMethod extends Bindable {
52 private final Method _method;
53 public String toString() { return "BindableMethod["+_method+"]"; }
54 public BindableMethod(Method _method) { this._method = _method; }
55 public String getSimpleName() { return _method.getName(); }
56 public <A extends Annotation> A getAnnotation(Class<A> c) { return _method.getAnnotation(c); }
57 public Object impose(Object[] fields) { return Reflection.impose(_method, fields); }
58 public Annotation[][] getArgAnnotations() { return _method.getParameterAnnotations(); }
59 public String[] getArgNames() { return new String[_method.getParameterTypes().length]; }
60 public Class[] getArgTypes() { return _method.getParameterTypes(); }
61 public void toJava(StringBuffer sb) {
62 sb.append("Bindable.create(");
63 sb.append(_method.getDeclaringClass().getName().replace('$','.'));
64 sb.append(".class.getMethod(\"");
65 sb.append(_method.getName());
67 appendClassArray(sb, _method.getParameterTypes());
72 private static class BindableConstructor extends Bindable {
73 private final Constructor _constructor;
74 public String toString() { return "BindableConstructor["+_constructor+"]"; }
75 public BindableConstructor(Constructor _constructor) { this._constructor = _constructor; }
76 public String getSimpleName() { return _constructor.getDeclaringClass().getSimpleName(); }
77 public <A extends Annotation> A getAnnotation(Class<A> c) { return _constructor.getAnnotation(c); }
78 public Object impose(Object[] fields) { return Reflection.impose(_constructor, fields); }
79 public Annotation[][] getArgAnnotations() { return _constructor.getParameterAnnotations(); }
80 public String[] getArgNames() { return new String[_constructor.getParameterTypes().length]; }
81 public Class[] getArgTypes() { return _constructor.getParameterTypes(); }
82 public void toJava(StringBuffer sb) {
83 sb.append("Bindable.create(");
84 sb.append(_constructor.getDeclaringClass().getName().replace('$','.'));
85 sb.append(".class.getConstructor(");
86 appendClassArray(sb, _constructor.getParameterTypes());
91 private static class BindableClass extends Bindable {
92 private final Class _class;
93 public String toString() { return "BindableClass["+_class+"]"; }
94 public BindableClass(Class _class) { this._class = _class; }
95 public String getSimpleName() { return _class.getSimpleName(); }
96 public <A extends Annotation> A getAnnotation(Class<A> c) { return (A)_class.getAnnotation(c); }
97 public Object impose(Object[] fields) { return Reflection.impose(_class, fields); }
98 public Annotation[][] getArgAnnotations() {
99 Field[] fields = _class.getFields();
100 Annotation[][] ret = new Annotation[fields.length][];
101 for(int i=0; i<fields.length; i++)
102 ret[i] = fields[i].getAnnotations();
105 public String[] getArgNames() {
106 Field[] fields = _class.getFields();
107 String[] ret = new String[fields.length];
108 for(int i=0; i<fields.length; i++)
109 ret[i] = fields[i].getName();
112 public Class[] getArgTypes() {
113 Field[] fields = _class.getFields();
114 Class[] ret = new Class[fields.length];
115 for(int i=0; i<fields.length; i++)
116 ret[i] = fields[i].getType();
119 public void toJava(StringBuffer sb) {
120 sb.append("Bindable.create(");
121 sb.append(_class.getName().replace('$','.'));
122 sb.append(".class)");
127 private static void appendClassArray(StringBuffer sb, Class[] c) {
128 sb.append("new Class[] {");
129 for(int i=0; i<c.length; i++) {
130 sb.append(makeClass(c[i]));
138 private static String makeClass(Class c) {
139 if (!c.isArray()) return c.getName().replace('$','.');
140 return makeClass(c.getComponentType())+"[]";