checkpoint

[sbp.git] / src / edu / berkeley / sbp / misc / Demo.java

diff --git a/src/edu/berkeley/sbp/misc/Demo.java b/src/edu/berkeley/sbp/misc/Demo.java
index 359f715..5aa2224 100644 (file)
--- a/src/edu/berkeley/sbp/misc/Demo.java
+++ b/src/edu/berkeley/sbp/misc/Demo.java
@@ -180,10 +180,18 @@ public class Demo {
     }
 
     public static abstract class Target {
-        public abstract String getName();
-        public abstract tag getTag();
-        public abstract nonterminal getNonTerminal();
         public abstract int[] buildSequence(Production p);
+        private Reflection.Bindable _bindable;
+        public Target(Reflection.Bindable b) { this._bindable = b; }
+
+        public String getName() { return _bindable.getSimpleName(); }
+        public tag getTag() { return (tag)_bindable.getAnnotation(tag.class); }
+        public nonterminal getNonTerminal() { return (nonterminal)_bindable.getAnnotation(nonterminal.class); }
+        public String toString() { return _bindable.getSimpleName(); }
+        public Object plant(Object[] fields) { return _bindable.impose(fields); }
+        public boolean isRaw() { return _bindable.isAnnotationPresent(raw.class); }
+        public Object invokeRaw(Iterable<Tree<Object>> t) { return _bindable.impose(new Object[] { t }); }
+
         public boolean isCompatible(Production p) {
             tag t = getTag();
             if (t != null &&
@@ -199,6 +207,7 @@ public class Demo {
 
             return false;
         }
+
         public int[] buildSequence(Production p, String[] names, arg[] argtags) {
             int argTagged = 0;
             for(int i=0; i<argtags.length; i++)
@@ -221,11 +230,10 @@ public class Demo {
             }
         }
         public Sequence makeSequence(Production p) {
-            return Sequence.rewritingSequence(new TargetReducer(p, buildSequence(p), "reducer-"+this), p.elements, p.labels, p.drops);
+            return Sequence.rewritingSequence(new TargetReducer(p, buildSequence(p), "reducer-"+this),
+                                              p.elements, p.labels, p.drops);
         }
-        public abstract Object plant(Object[] fields);
-        public boolean isRaw() { return false; }
-        public Object invokeRaw(Iterable<Tree<Object>> t) { return null; }
+
         public class TargetReducer implements Tree.TreeFunctor<Object,Object> {
             private Production p;
             private int[] map;
@@ -262,11 +270,7 @@ public class Demo {
 
     public static class TargetClass extends Target {
         public final Class _class;
-        public TargetClass(Class _class) { this._class = _class; }
-        public String getName() { return _class.getSimpleName(); }
-        public tag getTag() { return (tag)_class.getAnnotation(tag.class); }
-        public nonterminal getNonTerminal() { return (nonterminal)_class.getAnnotation(nonterminal.class); }
-        public String toString() { return _class.getSimpleName(); }
+        public TargetClass(Class _class) { super(Reflection.Bindable.create(_class)); this._class = _class; }
         public int[] buildSequence(Production p) {
             Field[]  f       = _class.getDeclaredFields();
             String[] names   = new String[f.length];
@@ -282,19 +286,11 @@ public class Demo {
                     return new TargetConstructor(c).buildSequence(p);
             return null;
         }
-        public Object plant(Object[] fields) {
-            return Reflection.impose(_class, fields);
-        }
-        
     }
 
     public static class TargetConstructor extends Target {
         public final Constructor _ctor;
-        public TargetConstructor(Constructor _ctor) { this._ctor = _ctor; }
-        public String getName() { return _ctor.getName(); }
-        public tag getTag() { return (tag)_ctor.getAnnotation(tag.class); }
-        public nonterminal getNonTerminal() { return (nonterminal)_ctor.getAnnotation(nonterminal.class); }
-        public String toString() { return _ctor.getName(); }
+        public TargetConstructor(Constructor _ctor) { super(Reflection.Bindable.create(_ctor)); this._ctor = _ctor; }
         public int[] buildSequence(Production p) {
             Annotation[][] annotations = _ctor.getParameterAnnotations();
             int len = annotations.length;
@@ -314,32 +310,10 @@ public class Demo {
                         argtags[i+ofs] = (arg)a;
             return buildSequence(p, names, argtags);
         }
-        public Object plant(Object[] fields) {
-            try {
-                Class[] argTypes = _ctor.getParameterTypes();
-                Object[] args = new Object[argTypes.length];
-                int j = 0;
-                for(int i=0; i<args.length; i++) {
-                    Object tgt = Reflection.lub(fields[i]);
-                    if (argTypes[i] == String.class) tgt = Reflection.stringify(tgt);
-                    // FUGLY
-                    tgt = Reflection.coerce(tgt, argTypes[i]);
-                    System.err.println("setting a " + argTypes[i].getName() + " to " + Reflection.show(tgt));
-                    args[i] = tgt;
-                }
-                return _ctor.newInstance(args);
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
-        }
     }
     public static class TargetMethod extends Target {
         public final Method _method;
-        public TargetMethod(Method _method) { this._method = _method; }
-        public String getName() { return _method.getName(); }
-        public String toString() { return _method.getName(); }
-        public tag getTag() { return (tag)_method.getAnnotation(tag.class); }
-        public nonterminal getNonTerminal() { return (nonterminal)_method.getAnnotation(nonterminal.class); }
+        public TargetMethod(Method _method) { super(Reflection.Bindable.create(_method)); this._method = _method; }
         public int[] buildSequence(Production p) {
             Annotation[][] annotations = _method.getParameterAnnotations();
             String[] names   = new String[annotations.length];
@@ -351,33 +325,6 @@ public class Demo {
             int[] ret = buildSequence(p, names, argtags);
             return ret;
         }
-        public boolean isRaw() { return _method.isAnnotationPresent(raw.class); }
-        public Object invokeRaw(Iterable<Tree<Object>> t) {
-            try {
-                return _method.invoke(null, new Object[] { t });
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
-        }
-        public Object plant(Object[] fields) {
-            try {
-                Class[] argTypes = _method.getParameterTypes();
-                Object[] args = new Object[argTypes.length];
-                int j = 0;
-                for(int i=0; i<args.length; i++) {
-                    Object tgt = Reflection.lub(fields[i]);
-                    if (argTypes[i] == String.class) tgt = Reflection.stringify(tgt);
-                    // FUGLY
-                    tgt = Reflection.coerce(tgt, argTypes[i]);
-                    System.err.println("setting a " + argTypes[i].getName() + " to " + Reflection.show(tgt));
-                    args[i] = tgt;
-                }
-                System.err.println("invoking " + _method + " with " + Reflection.show(args));
-                return _method.invoke(null, args);
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
-        }
     }
 
     public static Union cached = null;