+
+ 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 int[] buildSequence(Production p) {
+ Field[] f = _class.getDeclaredFields();
+ String[] names = new String[f.length];
+ arg[] argtags = new arg[f.length];
+ for(int i=0; i<f.length; i++) {
+ names[i] = f[i].getName();
+ argtags[i] = f[i].getAnnotation(arg.class);
+ }
+ int[] ret = buildSequence(p, names, argtags);
+ if (ret!=null) return ret;
+ for(Constructor c : _class.getConstructors())
+ if (new TargetConstructor(c).buildSequence(p)!=null)
+ return new TargetConstructor(c).buildSequence(p);
+ return null;
+ }
+ public Object plant(Object[] fields, int[] map) {
+ try {
+ Object ret = _class.newInstance();
+ Field[] f = _class.getFields();
+ int j = 0;
+ for(int i=0; i<f.length; i++)
+ if (map[i] != -1) {
+ Object tgt = Reflection.lub(fields[map[i]]);
+ if (f[i].getType() == String.class) tgt = stringify(tgt);
+ // FUGLY
+ tgt = coerce(tgt, f[i].getType());
+ System.err.println("setting a " + f[i].getType().getName() + " to " + Reflection.show(tgt));
+ f[i].set(ret, tgt);
+ }
+ return ret;
+ } catch (Exception e) {
+ e.printStackTrace();
+ throw new RuntimeException(e);
+ }
+ }
+ }
+
+ public static String stringify(Object o) {
+ if (o==null) return "";
+ if (!(o instanceof Object[])) return o.toString();
+ Object[] arr = (Object[])o;
+ StringBuffer ret = new StringBuffer();
+ for(int i=0; i<arr.length; i++)
+ ret.append(arr[i]);
+ return ret.toString();
+ }
+
+ 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;
+ }
+ 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 @nonterminal 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;
+ }
+
+ public static @tag void range(char c) { }
+ public static class Range extends El {
+ public @tag("range") Range(char only) { first = only; last = only; }
+ public @tag("-") Range(char first, char last) { this.first = first; this.last = last; }
+ public char first;
+ public char last;
+ }
+ public static class El { }
+ public static /*abstract*/ @nonterminal("Sequence") class Seq extends El { }
+ public static @tag("&") Seq and(Sequence s, El[] elements) { return new Seq(); }
+ public static @tag("&~") Seq andnot(Sequence s, El[] elements) { return new Seq(); }
+ public static @tag Seq ps(El[] elements) { return new Seq(); }
+ public static @tag Seq psx(Seq s) { return s; }
+ public static @tag("::") Seq tag(String tagname, Seq seq) { return new Seq(); }
+ public static @tag(":") void colon(String s, El e) { }
+ public static @tag(")") void close(String foo) { }
+ public static @tag("/") Seq slash(Seq s, El e) { return new Seq(); }
+ public static @tag("->") Seq arrow(Seq s, El e) { return new Seq(); }
+
+ public static @tag("nonTerminal") class NonTerminalReference extends El { public @arg String nonTerminal; }
+ public static @tag("literal") class StringLiteral extends El { public @arg String string; }
+ public static @tag("()") class Epsilon extends El { }
+ public static @tag("{") class Tree extends El { public @arg Seq body; }
+ public static class CharClass extends El { public @tag("[") CharClass(Range[] ranges) { } }
+
+ public static @tag("++") void plusmax(El e) { }
+ public static @tag("+") void plus(El e) { }
+ public static @tag("++/") void plusmaxfollow(El e, El sep) { }
+ public static @tag("+/") void plusfollow(El e, El sep) { }
+ public static @tag("**") void starmax(El e) { }
+ public static @tag("*") void star(El e) { }
+ public static @tag("**/") void starmaxfollow(El e, El sep) { }
+ public static @tag("*/") void starfollow(El e, El sep) { }
+ public static @tag("!") void bang(El e) { }
+ public static @tag("?") void question(El e) { }
+ public static @tag("^") void caret(String s) { }
+ public static @tag("~") void tilde(El e) { }
+ public static @tag("^^") void doublecaret(El e) { }
+ public static @tag("(") void subexpression(Seq[][] rhs) { }
+
+ public static @nonterminal("Word") String word(String s) { return null; }
+ public static @nonterminal("Quoted") String quoted(String s) { return null; }
+ public static @nonterminal("escaped") String c(char c) { return null; }
+ public static @tag("\"\"") String emptystring() { return null; }
+ public static @tag("\r") String lf() { return null; }
+ public static @tag("\n") String cr() { return null; }
+ }
+