src/edu/berkeley/sbp/misc/MetaGrammar.java

   1 package edu.berkeley.sbp.misc;
   2 import edu.berkeley.sbp.util.*;
   3 import edu.berkeley.sbp.*;
   4 import java.util.*;
   5 import java.io.*;
   6
   7 public class MetaGrammar extends ReflectiveWalker {
   8
   9     public static Union make() throws Exception {
  10         return ((MetaGrammar)new MetaGrammar().walk(meta)).done();
  11     }
  12     public String toString() {
  13         StringBuffer ret = new StringBuffer();
  14         for(Union u : nt.values()) u.toString(ret);
  15         return ret.toString();
  16     }
  17
  18     // FIXME
  19     private static HashSet<Union> dropAll = new HashSet<Union>();
  20
  21     // Statics //////////////////////////////////////////////////////////////////////////////
  22
  23     private static final Union SELF = new Union("()");
  24
  25     public static Union epsilon = new Union("()");
  26     static { epsilon.add(Sequence.empty); }
  27
  28     // MetaGrammar //////////////////////////////////////////////////////////////////////////////
  29
  30     public Object      _star_(Element r)                                              { return new Rep(r, null, false, true); }
  31     public Element     _leftbracket_(Object o, Object[] args)                         { return rangex(o==null || !(o instanceof Character) ? null : o, args); }
  32     public Union       _colon__colon__equals_(String s, PreSequence[][] p)            { return nonTerminalZ(s, p); }
  33     public Union       _bang__colon__colon__equals_(String s, PreSequence[][] p)      { return nonTerminalZ(s, p, true); }
  34     public Union       _colon__colon__equals_(boolean q, String s, PreSequence[][] p) { return nonTerminalZ(s, p, q); }
  35     public Element     _leftparen__rightparen_()                                      { return epsilon; }
  36     public Element     epsilon(Object o, Object b)                                    { return epsilon; }
  37     public Element     _rightparen_(Object e)                                         { return SELF; }
  38
  39     public PreSequence _amp_(PreSequence p, Object[] o) {
  40         p.needs.add(new PreSequence(o, null, true));
  41         return p;
  42     }
  43     public PreSequence _amp__tilde_(PreSequence p, Object[] o) {
  44         p.hates.add(new PreSequence(o, null, true));
  45         return p;
  46     }
  47
  48     public Element     _bang_(Element r)                       { return r; }
  49     public Object      care(String s)                          { return new MyLift(s); }
  50     //public Element     _backtick_(Element r)                   { return new Unwrap(r); }
  51     //public Element     _hash_(Element e)                       { return e; }
  52     //public Element     _hash_(Element e)                       { return _plus__plus_(e); }
  53
  54     public PreSequence[] alternatives(PreSequence[] s) { return s; }
  55
  56     public Range       _minus_(Character a, Character b)   { return b==null ? new Range(a.charValue(), true) : new Range(a.charValue(), b.charValue()); }
  57     public Object  _leftparen_(PreSequence[][] p) { return nonTerminalZ(p); }
  58     public Union       nonTerminalY(String s) { return nonTerminalX(s, false, false); }
  59     public Union nonTerminalX(String s, boolean synthetic, boolean dropAll) {
  60         Union n = s.equals(startSymbol) ? g : nt.get(s);
  61         if (n == null) nt.put(s, n = new Union(s, synthetic));
  62         if (dropAll) this.dropAll.add(n);
  63         return n;
  64     }
  65     public Union       nonTerminalZ(PreSequence[][] p)           { return nonTerminalX("anon"+(anon++), p, false, false); }
  66     public Union       nonTerminalZ(String s, PreSequence[][] p) { return nonTerminalX(s, p, false, false); }
  67     public Union       nonTerminalZ(String s, PreSequence[][] p, boolean q) { return nonTerminalX(s, p, false, q); }
  68     public Object  _backslash__leftbrace_(String s)      { return SELF; }
  69     public Object  _leftbrace_(String s)                 { return SELF; }
  70     public Object _plus_(final Element r) { return new Rep(r, null, false, false); }
  71     public Object[] _slash_(Object[] o, Object sep) {
  72         if (o.length <= 1) return o;
  73         Object[] ret = new Object[o.length * 2 - 1];
  74         for(int i=0; i<o.length; i++) {
  75             Object oi = o[i];
  76             ret[i*2]   = oi;
  77             if (i*2+1<ret.length) ret[i*2+1] = new MyDrop(sep);
  78         }
  79         return ret;
  80     }
  81     //public Element _tilde__slash__tilde_(final Element r) { return Repeat.maximal(r); }
  82     public Object _plus__slash_(final Element r, Object s) {
  83         if (s instanceof String) s = CharToken.string((String)s);
  84         return new Rep(r, (Element)s, false, false);
  85     }
  86     public Object _dollar__dollar_(final Element r, Object s) {
  87         if (s instanceof String) s = CharToken.string((String)s);
  88         return new Rep(r, (Element)s, false, false);
  89     }
  90     public Object _star__slash_(final Element r, Object s) {
  91         if (s instanceof String) s = CharToken.string((String)s);
  92         return new Rep(r, (Element)s, false, true);
  93     }
  94     public Object _percent__percent_(final Element r, Object s) {
  95         if (s instanceof String) s = CharToken.string((String)s);
  96         return new Rep(r, (Element)s, false, true);
  97     }
  98     //public Element _star__slash_(final Element r, Element s) { return Repeat.many0(r, s); }
  99     public Object _star__star_(final Element r) { return new Rep(r, null, true, true); }
 100     public Object _plus__plus_(final Element r) { return new Rep(r, null, true, false); }
 101     public Element _question_(final Element r) { return Repeat.maybe(r); }
 102     public MetaGrammar gram(Object o, MetaGrammar g, Object o2) { return g; }
 103     public MetaGrammar  grammar(Object[] o) { return this; }
 104     public MetaGrammar grammar(Object o, Union[] u, Object x) { return this; }
 105     public char    _backslash_n() { return '\n'; }
 106     public char    _backslash_r() { return '\r'; }
 107     public String  literal(String s) { return s; }
 108     //public Element  literal(String s)    { return CharToken.string(s); }
 109
 110     public Range     range0(char a)         { return new Range(a, a); }
 111     public Range     range0(char a, char b) { return new Range(a, b); }
 112     public Range     range1(char a, char b) { return new Range(a, b); }
 113     public Element   rangex(Range[] rr) { return range("~", rr); }
 114     public Element   range(Range[] rr) { return range(null, rr); }
 115     public Element   range(Object o, Range[] rr) {
 116         Range.Set ret = !"~".equals(o+"") ? new Range.Set() : new Range.Set(new Range(true, true));
 117         if (rr != null)
 118             for(Range r : rr)
 119                 if (!"~".equals(o+"")) ret.add(r);
 120                 else                   ret.remove(r);
 121         return CharToken.set(ret);
 122     }
 123     public Element rangex(Object o, Object[] r) {
 124         Range.Set ret = o==null ? new Range.Set() : new Range.Set(new Range(true, true));
 125         if (r != null)
 126             for(Object aa : r) {
 127                 Range range =
 128                     aa instanceof Range
 129                     ? (Range)aa
 130                     : aa instanceof Character
 131                     ? new Range(((Character)aa).charValue())
 132                     : new Range(((String)aa).charAt(0));
 133                 if (o==null) ret.add(range);
 134                 else         ret.remove(range);
 135             }
 136         return CharToken.set(ret);
 137     }
 138
 139     public String sify(Object arg) {
 140         if (arg==null) return "";
 141         if (arg instanceof String) return (String)arg;
 142         Object[] args = (Object[])arg;
 143         while(true) {
 144             args = Reflection.lub(args);
 145             if (args instanceof String[]) {
 146                 StringBuffer ret = new StringBuffer();
 147                 for(String s : ((String[])args)) ret.append(s);
 148                 return ret.toString();
 149             }
 150             if (args instanceof Character[]) break;
 151             if (!(args instanceof Object[])) break;
 152             args = (Object[])args[0];
 153         }
 154         if (args instanceof Character[]) {
 155             char[] c = new char[args.length];
 156             for(int i=0; i<c.length; i++) c[i] = ((Character)args[i]).charValue();
 157             String s = new String(c, 0, c.length);
 158             return s;
 159         }
 160         return (String)args[0];
 161     }
 162
 163
 164     ////////////////////////////////////////////////////////////////////////////////
 165
 166     private Union g;
 167     private HashMap<String,Union> nt;
 168     private int anon = 0;
 169     private Element dws;
 170     private String startSymbol;
 171
 172     public MetaGrammar() { this("s"); }
 173     public MetaGrammar(String s) { done(s); }
 174     public Union done() { return done("s"); }
 175     public Union done(String str) {
 176         Union ret = g;
 177         g = new Union(str);
 178         startSymbol = str;
 179         nt = new HashMap<String,Union>();
 180         nt.put(str, g);
 181         this.dws = Repeat.maximal(Repeat.many0(nonTerminalY("w")));
 182         return ret;
 183     }
 184
 185     public Union nonTerminalX(String str, PreSequence[][] s, boolean synthetic, boolean dropAll) {
 186         Union n = nonTerminalX(str, synthetic, dropAll);
 187         if (s == null || s.length==0) { n.add(Sequence.empty); return n; }
 188         HashSet<Sequence> seqs = new HashSet<Sequence>();
 189         for(int i=0; i<s.length; i++) {
 190             if (s[i]==null) continue;
 191             HashSet<Sequence> temp = new HashSet<Sequence>();
 192             for(PreSequence pre : s[i]) {
 193                 pre.hatess.addAll(seqs);
 194                 Sequence seq = pre.buildSequence(n, false, dropAll);
 195                 temp.add(seq);
 196                 //for(Sequence dom : seqs) seq.hates.add(dom);
 197                 n.add(seq);
 198             }
 199             seqs.addAll(temp);
 200         }
 201         return n;
 202     }
 203
 204     public String stringify(String s) { return StringUtil.unescapify(s); }
 205     public char unescape(char x, char c) { return unescape(c); }
 206     public char unescape(char c) { return StringUtil.unescapify("\\"+c).charAt(0); }
 207     public PreSequence sequence(Object[] o) { return new PreSequence(o, null); }
 208
 209     public static class PreBrace {
 210         public final Object[] o;
 211         public PreBrace(Object[] o) { this.o = o; }
 212     }
 213
 214     public PreSequence _equals__greater_(Object[] o, String s) { return new PreSequence(o, s); }
 215     public PreSequence wrap(Object[] o) { return new PreSequence(o, ""); }
 216     public PreSequence mwrap(Object[] o) { return new PreSequence(o, ""); }
 217     public PreSequence rewrite(Object[] o) { return new PreSequence(o, null); }
 218     public PreSequence rewrite(Object[] o, Object o2) {
 219         Object[] o3 = new Object[o.length + 1];
 220         System.arraycopy(o, 0, o3, 0, o.length);
 221         o3[o3.length-1] = o2;
 222         return rewrite(o3);
 223     }
 224
 225     public static class Rep {
 226         private final Element e;
 227         private final Element s;
 228         private final boolean maximal;
 229         private final boolean zero;
 230         public Rep(Element e, Element s, boolean maximal, boolean zero) { this.e = e; this.s = s; this.zero = zero; this.maximal = maximal;}
 231         public Element build() {
 232             Element sep = s;
 233             Element ret = zero ? Repeat.many0(e, sep) :  Repeat.many1(e, sep);
 234             return maximal ? Repeat.maximal(ret) : ret;
 235         }
 236     }
 237
 238     public static class PreSequence {
 239         public final HashSet<PreSequence> needs  = new HashSet<PreSequence>();
 240         public final HashSet<PreSequence> hates  = new HashSet<PreSequence>();
 241         public final HashSet<Sequence> hatess = new HashSet<Sequence>();
 242         public /*final*/ String tag;
 243         public final Object[] o;
 244         public final boolean keeper;
 245
 246         public PreSequence(Object[] o, String tag) { this(o, tag, false); }
 247         public PreSequence(Object[] o, String tag, boolean keeper) { this.o = o; this.tag = tag; this.keeper = keeper; }
 248         boolean[] drops = null;
 249         public Element[] expand(Union u, HashSet<Sequence> set) {
 250             if (o==null) return new Element[0];
 251             Element[] o2 = new Element[o.length];
 252             drops = new boolean[o.length];
 253             int j = 0;
 254             for(int i=0; i<o.length; i++) {
 255                 Object oi = o[i];
 256                 if (oi instanceof MyDrop)      { oi = ((MyDrop)oi).o; drops[j] = true; }
 257                 if      (oi instanceof PreSequence) o2[j] = ((PreSequence)oi).buildUnion();
 258                 else if (oi==SELF)                  o2[j] = u.new Subset("(("+u+"))", set);
 259                 else if (oi instanceof MyLift)      { o2[j] = CharToken.string(tag = ((MyLift)oi).s); drops[j] = true; }
 260                 else if (oi instanceof String)      { o2[j] = CharToken.string(      ((String)oi)  ); drops[j] = true; }
 261                 else if (oi instanceof Rep)         o2[j] = ((Rep)oi).build();
 262                 else                                  o2[j] = (Element)oi;
 263
 264                 if (dropAll.contains(o2[j])) drops[j] = true;
 265
 266                 o2[j] = o2[j];
 267                 j++;
 268             }
 269             return o2;
 270         }
 271         public Union    buildUnion() {
 272             Union u = new Union("???");
 273             u.add(buildSequence(u));
 274             return u;
 275         }
 276         public Sequence buildSequence(Union u) { return buildSequence(u, false, false); }
 277         public Sequence buildSequence(Union u, boolean lame, boolean dropAll) {
 278
 279             HashSet<Sequence> and = new HashSet<Sequence>();
 280             HashSet<Sequence> not = new HashSet<Sequence>();
 281             for(PreSequence p : needs) {
 282                 Sequence ps = p.buildSequence(u, true, dropAll);
 283                 u.add(ps);
 284                 and.add(ps);
 285             }
 286             for(Sequence p : hatess) not.add(p);
 287             for(PreSequence p : hates) {
 288                 Sequence ps = p.buildSequence(u, true, dropAll);
 289                 u.add(ps);
 290                 not.add(ps);
 291             }
 292
 293             HashSet<Sequence> set = new HashSet<Sequence>();
 294             Element[] expansion = expand(u, set);
 295             boolean keeper = this.keeper;
 296             Sequence ret = dropAll || lame || keeper ? Sequence.drop(expansion, and, not, lame) : null;
 297             if (ret==null && tag!=null) {
 298                 for(int i=0; i<expansion.length; i++) expansion[i] = expansion[i];
 299                 ret = Sequence.rewritingSequence(tag, expansion, drops, and, not);
 300             }
 301             if (ret==null) {
 302                 int idx = -1;
 303                 for(int i=0; i<expansion.length; i++) {
 304                     if (!drops[i]) idx = i;
 305                     else expansion[i] = expansion[i];
 306                 }
 307                 ret = idx==-1 ? Sequence.drop(expansion, and, not, false) : Sequence.singleton(expansion, idx, and, not);
 308             }
 309             set.add(ret);
 310             return ret;
 311         }
 312     }
 313
 314     public static void main(String[] args) throws Exception {
 315         if (args.length != 2) {
 316             System.err.println("usage: java " + MetaGrammar.class.getName() + " grammarfile.g com.yourdomain.package.ClassName");
 317             System.exit(-1);
 318         }
 319
 320         String className   = args[1].substring(args[1].lastIndexOf('.')+1);
 321         String packageName = args[1].substring(0, args[1].lastIndexOf('.'));
 322         String fileName    = packageName.replace('.', '/') + "/" + className + ".java";
 323
 324         BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));
 325         StringBuffer out = new StringBuffer();
 326
 327         boolean skip = false;
 328         for(String s = br.readLine(); s != null; s = br.readLine()) {
 329             if (s.indexOf("DO NOT EDIT STUFF BELOW: IT IS AUTOMATICALLY GENERATED") != -1 && s.indexOf("\"")==-1) skip = true;
 330             if (s.indexOf("DO NOT EDIT STUFF ABOVE: IT IS AUTOMATICALLY GENERATED") != -1 && s.indexOf("\"")==-1) break;
 331             if (!skip) out.append(s+"\n");
 332         }
 333
 334         out.append("\n        // DO NOT EDIT STUFF BELOW: IT IS AUTOMATICALLY GENERATED\n");
 335         new Parser(MetaGrammar.make(), CharToken.top()).parse1(new CharToken.Stream(new InputStreamReader(new FileInputStream(args[0])))).toJava(out);
 336         out.append("\n        // DO NOT EDIT STUFF ABOVE: IT IS AUTOMATICALLY GENERATED\n");
 337
 338         for(String s = br.readLine(); s != null; s = br.readLine()) out.append(s+"\n");
 339         br.close();
 340
 341         OutputStream os = new FileOutputStream(fileName);
 342         PrintWriter p = new PrintWriter(new OutputStreamWriter(os));
 343         p.println(out.toString());
 344         p.flush();
 345         os.close();
 346     }
 347
 348     public static class MyLift {
 349         public final String s;
 350         public MyLift(String s) { this.s = s; }
 351     }
 352     public static class MyDrop {
 353         public final Object o;
 354         public MyDrop(Object o) { this.o = o; }
 355     }
 356
 357     public static final Tree meta =
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369         // DO NOT EDIT STUFF BELOW: IT IS AUTOMATICALLY GENERATED
 370         new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }),
 371                                             new Tree(null, "grammar", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { })})}),
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 419                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "r", new Tree[] { }),
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 421                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "a", new Tree[] { }),
 422                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "t", new Tree[] { }),
 423                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "i", new Tree[] { }),
 424                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "v", new Tree[] { }),
 425                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "e", new Tree[] { }),
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 431                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "r", new Tree[] { }),
 432                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "d", new Tree[] { })})})}),
 433                                                                                                                                                                                                                                                                                                                                                                                   new Tree(null, "care", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "!", new Tree[] { }),
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 435                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             new Tree(null, ":", new Tree[] { }),
 436                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             new Tree(null, "=", new Tree[] { })})})}),
 437                                                                                                                                                                                                                                                                                                                                                                                   new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "a", new Tree[] { }),
 438                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "l", new Tree[] { }),
 439                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "t", new Tree[] { }),
 440                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "e", new Tree[] { }),
 441                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "r", new Tree[] { }),
 442                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "n", new Tree[] { }),
 443                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "a", new Tree[] { }),
 444                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "t", new Tree[] { }),
 445                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "i", new Tree[] { }),
 446                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "v", new Tree[] { }),
 447                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "e", new Tree[] { }),
 448                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     new Tree(null, "s", new Tree[] { })})})})}),
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 450                                                                                                                                                                                                                                                                                                                                                                                                                                                                   new Tree(null, "s", new Tree[] { })})})})})})})})})}),
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 452                                                                                                                                                                                                                               new Tree(null, "l", new Tree[] { }),
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 454                                                                                                                                                                                                                               new Tree(null, "e", new Tree[] { }),
 455                                                                                                                                                                                                                               new Tree(null, "r", new Tree[] { }),
 456                                                                                                                                                                                                                               new Tree(null, "n", new Tree[] { }),
 457                                                                                                                                                                                                                               new Tree(null, "a", new Tree[] { }),
 458                                                                                                                                                                                                                               new Tree(null, "t", new Tree[] { }),
 459                                                                                                                                                                                                                               new Tree(null, "i", new Tree[] { }),
 460                                                                                                                                                                                                                               new Tree(null, "v", new Tree[] { }),
 461                                                                                                                                                                                                                               new Tree(null, "e", new Tree[] { }),
 462                                                                                                                                                                                                                               new Tree(null, "s", new Tree[] { })})}),
 463                                                                                                                                                         new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "$$", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "e", new Tree[] { }),
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 465                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      new Tree(null, "u", new Tree[] { }),
 466                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      new Tree(null, "i", new Tree[] { }),
 467                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      new Tree(null, "A", new Tree[] { }),
 468                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      new Tree(null, "l", new Tree[] { }),
 469                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      new Tree(null, "t", new Tree[] { })})})}),
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 472                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              new Tree(null, "literal", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, ">", new Tree[] { })})})}),
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 476                                                                                                                                                                                                                               new Tree(null, "q", new Tree[] { }),
 477                                                                                                                                                                                                                               new Tree(null, "u", new Tree[] { }),
 478                                                                                                                                                                                                                               new Tree(null, "i", new Tree[] { }),
 479                                                                                                                                                                                                                               new Tree(null, "A", new Tree[] { }),
 480                                                                                                                                                                                                                               new Tree(null, "l", new Tree[] { }),
 481                                                                                                                                                                                                                               new Tree(null, "t", new Tree[] { })})}),
 482                                                                                                                                                         new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "$$", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "c", new Tree[] { }),
 483                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "o", new Tree[] { }),
 484                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "n", new Tree[] { }),
 485                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "j", new Tree[] { }),
 486                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "u", new Tree[] { }),
 487                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "n", new Tree[] { }),
 488                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "c", new Tree[] { }),
 489                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "t", new Tree[] { }),
 490                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "s", new Tree[] { })})})}),
 491                                                                                                                                                                                                                                                                                                                                                                               new Tree(null, "(", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }),
 492                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           new Tree(null, "s", new Tree[] { })})})}),
 493                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         new Tree(null, "literal", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "|", new Tree[] { })})})}),
 494                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }),
 495                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           new Tree(null, "s", new Tree[] { })})})})})})})})})})})}),
 496                                                                                                                                                                                                                                                                                                           new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "a", new Tree[] { }),
 497                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "l", new Tree[] { }),
 498                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "t", new Tree[] { }),
 499                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "e", new Tree[] { }),
 500                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "r", new Tree[] { }),
 501                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "n", new Tree[] { }),
 502                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "a", new Tree[] { }),
 503                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "t", new Tree[] { }),
 504                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "i", new Tree[] { }),
 505                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "v", new Tree[] { }),
 506                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "e", new Tree[] { }),
 507                                                                                                                                                                                                                                                                                                                                                                                 new Tree(null, "s", new Tree[] { })})})})})})})}),
 508                                                                                                                      new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }),
 509                                                                                                                                                                                                                               new Tree(null, "e", new Tree[] { }),
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 935         new Tree(null, "n", new Tree[] { })})})})}),
 936         new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "\n", new Tree[] { })})})}),
 937         new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "literal", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "\\", new Tree[] { }),
 938         new Tree(null, "r", new Tree[] { })})})})}),
 939         new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "\r", new Tree[] { })})})}),
 940         new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "literal", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "\\", new Tree[] { })})})}),
 941         new Tree(null, "range", new Tree[] { new Tree(null, "~", new Tree[] { }),
 942         new Tree(null, null, new Tree[] { new Tree(null, "range0", new Tree[] { new Tree(null, "n", new Tree[] { })}),
 943         new Tree(null, "range0", new Tree[] { new Tree(null, "r", new Tree[] { })})})})})})})})})})})}),
 944         new Tree(null, null, new Tree[] { })})
 945         // DO NOT EDIT STUFF ABOVE: IT IS AUTOMATICALLY GENERATED
 946         ;
 947 }
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960