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() { return new SimpleBinding(); }
33 public Binding createBinding(final int[] map) { return new SimpleBinding(map); }
34 public Binding createBinding(final int[] map, Object prepend) { return new SimpleBinding(map, prepend); }
36 public class SimpleBinding implements Binding, ToJava {
37 private int[] map = null;
38 private Object prepend = null;
39 public SimpleBinding() { }
40 public SimpleBinding(int[] map) { this.map = map; }
41 public SimpleBinding(int[] map, Object prepend) { this.map = map; this.prepend = prepend; }
43 public Object invoke(Object[] o) {
44 if (map==null) return impose(o);
46 for(int i=0; i<map.length; i++) max = Math.max(map[i], max);
47 Object[] o2 = new Object[max+1];
48 for(int i=0; i<o.length; i++) o2[map[i]+(prepend==null?0:1)] = o[i];
49 if (prepend != null) o2[0] = prepend;
53 public void toJava(StringBuffer sb) {
54 Bindable.this.toJava(sb);
55 sb.append(".createBinding(");
57 sb.append("new int[] {");
58 for(int i=0; i<map.length; i++) {
60 if (i<map.length-1) sb.append(",");
69 private static class BindableMethod extends Bindable {
70 private final Method _method;
71 public String toString() { return "BindableMethod["+_method+"]"; }
72 public BindableMethod(Method _method) { this._method = _method; }
73 public String getSimpleName() { return _method.getName(); }
74 public <A extends Annotation> A getAnnotation(Class<A> c) { return _method.getAnnotation(c); }
75 public Object impose(Object[] fields) { return Reflection.impose(_method, fields); }
76 public Annotation[][] getArgAnnotations() { return _method.getParameterAnnotations(); }
77 public String[] getArgNames() { return new String[_method.getParameterTypes().length]; }
78 public Class[] getArgTypes() { return _method.getParameterTypes(); }
79 public void toJava(StringBuffer sb) {
80 sb.append("Bindable.create(");
81 sb.append(_method.getDeclaringClass().getName().replace('$','.'));
82 sb.append(".class.getMethod(\"");
83 sb.append(_method.getName());
85 appendClassArray(sb, _method.getParameterTypes());
90 private static class BindableConstructor extends Bindable {
91 private final Constructor _constructor;
92 public String toString() { return "BindableConstructor["+_constructor+"]"; }
93 public BindableConstructor(Constructor _constructor) { this._constructor = _constructor; }
94 public String getSimpleName() { return _constructor.getDeclaringClass().getSimpleName(); }
95 public <A extends Annotation> A getAnnotation(Class<A> c) { return _constructor.getAnnotation(c); }
96 public Object impose(Object[] fields) { return Reflection.impose(_constructor, fields); }
97 public Annotation[][] getArgAnnotations() { return _constructor.getParameterAnnotations(); }
98 public String[] getArgNames() { return new String[_constructor.getParameterTypes().length]; }
99 public Class[] getArgTypes() { return _constructor.getParameterTypes(); }
100 public void toJava(StringBuffer sb) {
101 sb.append("Bindable.create(");
102 sb.append(_constructor.getDeclaringClass().getName().replace('$','.'));
103 sb.append(".class.getConstructor(");
104 appendClassArray(sb, _constructor.getParameterTypes());
109 private static class BindableClass extends Bindable {
110 private final Class _class;
111 public String toString() { return "BindableClass["+_class+"]"; }
112 public BindableClass(Class _class) { this._class = _class; }
113 public String getSimpleName() { return _class.getSimpleName(); }
114 public <A extends Annotation> A getAnnotation(Class<A> c) { return (A)_class.getAnnotation(c); }
115 public Object impose(Object[] fields) { return Reflection.impose(_class, fields); }
116 public Annotation[][] getArgAnnotations() {
117 Field[] fields = _class.getFields();
118 Annotation[][] ret = new Annotation[fields.length][];
119 for(int i=0; i<fields.length; i++)
120 ret[i] = fields[i].getAnnotations();
123 public String[] getArgNames() {
124 Field[] fields = _class.getFields();
125 String[] ret = new String[fields.length];
126 for(int i=0; i<fields.length; i++)
127 ret[i] = fields[i].getName();
130 public Class[] getArgTypes() {
131 Field[] fields = _class.getFields();
132 Class[] ret = new Class[fields.length];
133 for(int i=0; i<fields.length; i++)
134 ret[i] = fields[i].getType();
137 public void toJava(StringBuffer sb) {
138 sb.append("Bindable.create(");
139 sb.append(_class.getName().replace('$','.'));
140 sb.append(".class)");
145 private static void appendClassArray(StringBuffer sb, Class[] c) {
146 sb.append("new Class[] {");
147 for(int i=0; i<c.length; i++) {
148 sb.append(makeClass(c[i]));
156 private static String makeClass(Class c) {
157 if (!c.isArray()) return c.getName().replace('$','.');
158 return makeClass(c.getComponentType())+"[]";