- 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 int[] buildSequence(Production p) {
- Annotation[][] annotations = _ctor.getParameterAnnotations();
- int len = annotations.length;
- int ofs = 0;
- String name = _ctor.getDeclaringClass().getName();
- /*
- if (name.indexOf('$') > name.lastIndexOf('.')) {
- len--;
- ofs++;
- }
- */
- String[] names = new String[len];
- arg[] argtags = new arg[len];
- for(int i=0; i<names.length; i++)
- for(Annotation a : annotations[i+ofs])
- if (a instanceof arg)
- argtags[i+ofs] = (arg)a;
- return buildSequence(p, names, argtags);
- }
- public Object plant(Object[] fields, int[] map) {
- try {
- Class[] argTypes = _ctor.getParameterTypes();
- Object[] args = new Object[argTypes.length];
- int j = 0;
- for(int i=0; i<args.length; i++)
- if (map[i] != -1) {
- Object tgt = Reflection.lub(fields[map[i]]);
- if (argTypes[i] == String.class) tgt = stringify(tgt);
- // FUGLY
- tgt = 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 int[] buildSequence(Production p) {
- Annotation[][] annotations = _method.getParameterAnnotations();
- String[] names = new String[annotations.length];
- arg[] argtags = new arg[annotations.length];
- for(int i=0; i<names.length; i++)
- for(Annotation a : annotations[i])
- if (a instanceof arg)
- argtags[i] = (arg)a;
- int[] ret = buildSequence(p, names, argtags);
- return ret;
- }
- public Object plant(Object[] fields, int[] map) {
- try {
- Class[] argTypes = _method.getParameterTypes();
- Object[] args = new Object[argTypes.length];
- int j = 0;
- for(int i=0; i<args.length; i++)
- if (map[i] != -1) {
- Object tgt = Reflection.lub(fields[map[i]]);
- if (argTypes[i] == String.class) tgt = stringify(tgt);
- // FUGLY
- tgt = 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 Object coerce(Object o, Class c) {
- if (o==null) return null;
- if (c.isInstance(o)) return o;
- if (c == char.class) {
- return o.toString().charAt(0);
- }
- if (c.isArray() && (c.getComponentType().isInstance(o))) {
- Object[] ret = (Object[])Array.newInstance(c.getComponentType(), 1);
- ret[0] = o;
- return ret;
- }
- if (o.getClass().isArray() && c.isArray()) {
- boolean ok = true;
- for(int i=0; i<((Object[])o).length; i++) {
- Object ob = (((Object[])o)[i]);
- if (ob != null) {
- System.err.println("no hit with " + c.getComponentType().getName() + " on " + Reflection.show(((Object[])o)[i]));
- ok = false;
- }
- }
- if (ok) {
- System.err.println("hit with " + c.getComponentType().getName());
- return Array.newInstance(c.getComponentType(), ((Object[])o).length);
- }
- }
- return o;
- }
-
- public static class MG {
- //public static @tag Grammar grammar(Grammar g) { return g; }
- public static @tag("grammar") class Grammar {
- public @arg("NonTerminal") NonTerminal[] nonterminals;
- public String toString() {
- String ret = "[ ";
- for(NonTerminal nt : nonterminals) ret += nt + ", ";
- return ret + " ]";
- }
- }
- public static @nonterminal class NonTerminal extends El {
- public @arg("Word") String name;
- public @arg("RHS") Seq[][] sequences;
- }