this.sep = sep;
}
public Element build(MetaGrammar.Context cx) { return cx.get(name); }
+ public void build(MetaGrammar.Context cx, Union u) {
+ if (!rep) { super.build(cx, u); return; }
+ HashSet<Sequence> bad2 = new HashSet<Sequence>();
+
+ Union urep = new Union();
+ urep.add(Sequence.empty);
+ urep.add(Sequence.singleton(new Element[] { cx.get(sep), u }, 1));
+
+ for(int i=0; i<sequences.length; i++) {
+ Seq[] group = sequences[i];
+ Union u2 = new Union();
+ if (sequences.length==1) u2 = u;
+ for(int j=0; j<group.length; j++) {
+ Union u3 = new Union();
+ group[j].build(cx, u3, false);
+ Sequence s = Sequence.unwrap(new Element[] { u3, urep },
+ cx.rm.repeatTag(),
+ new boolean[] { false, false });
+ u2.add(s);
+ }
+ if (sequences.length==1) break;
+ Sequence seq = Sequence.singleton(u2);
+ for(Sequence s : bad2) {
+ s.lame = true;
+ seq = seq.not(s);
+ }
+ u.add(seq);
+ bad2.add(Sequence.singleton(u2));
+ }
+ }
}
public static @bind.as("=") NonTerminal go(@bind.arg String name, @bind.arg Seq[][] sequences) { return new NonTerminal(name, sequences, true); }
public static @bind.as("=") NonTerminal go(@bind.arg String name, @bind.arg String sep, @bind.arg Seq[][] sequences) {
El follow;
String tag = null;
boolean lame;
+ public void append(El e) {
+ El[] elements = new El[this.elements.length+1];
+ System.arraycopy(this.elements, 0, elements, 0, this.elements.length);
+ this.elements = elements;
+ elements[elements.length-1] = e;
+ }
public Seq(El e) { this(new El[] { e }); }
public Seq(El[] elements) { this.elements = elements; }
public Seq tag(String tag) { this.tag = tag; return this; }