X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FRepeat.java;fp=src%2Fedu%2Fberkeley%2Fsbp%2FRepeat.java;h=0000000000000000000000000000000000000000;hp=037e67d58b06571328e674d05eb0cbe2cd8fbacb;hb=e6be1f03f79b16cd410991d7e64cfa7beab6de59;hpb=b8a597c8d1a29afc24f9b89f726d5b1a9b9aeec1 diff --git a/src/edu/berkeley/sbp/Repeat.java b/src/edu/berkeley/sbp/Repeat.java deleted file mode 100644 index 037e67d..0000000 --- a/src/edu/berkeley/sbp/Repeat.java +++ /dev/null @@ -1,53 +0,0 @@ -package edu.berkeley.sbp; -import edu.berkeley.sbp.util.*; -import edu.berkeley.sbp.*; -import edu.berkeley.sbp.*; -import java.io.*; -import java.util.*; -import java.lang.reflect.*; -import java.lang.ref.*; - -/** currently this class exports only static methods to create repetitions; there are no public instance methods or constructors */ -class Repeat extends Union { - - public Repeat(final Element e, boolean zeroOkay, boolean manyOkay, Object tag) { - this(e, zeroOkay, manyOkay, null, false, tag); } - public Repeat(final Element e, boolean zeroOkay, boolean manyOkay, final Element separator, Object tag) { - this(e, zeroOkay, manyOkay, separator, false, tag); } - protected Repeat(final Element e, boolean zeroOkay, boolean manyOkay, final Element separator, boolean maximal, Object tag) { - super(e+(!manyOkay ? "?" : (zeroOkay ? (maximal ? "**" : "*") : (maximal ? "++" : "+")))+(separator==null?"":("/"+separator)), true); - if (zeroOkay && !manyOkay) { - add(new Sequence.Constant.Empty()); - add(new Sequence.Singleton(e)); - return; - } - if (zeroOkay) { - add(new Sequence.RewritingSequence(tag, new Element[] { }, null)); - //add(new Sequence.Constant.Empty()); - // FUGLY - add(new Sequence.Singleton(Sequence.many1(e, separator, tag))); - } else { - add(new Sequence.RewritingSequence(tag, new Element[] { e }, null)); - if (separator==null) - add(new Sequence.Unwrap(new Element[] { e, Repeat.this }, tag)); - else - add(new Sequence.Unwrap(new Element[] { e, separator, Repeat.this }, tag, new boolean[] { false, true, false })); - } - } - - public static class Maximal extends Repeat { - public Maximal(final Element e, boolean zeroOkay, boolean manyOkay, final Atom separator, Object tag) { - super(e, zeroOkay, manyOkay, separator, true, tag); - if (zeroOkay && separator != null) - throw new RuntimeException("cannot create a maximal repetition of zero or more items with a separator (yet): " + this); - for(Sequence s : this) - s.follow = (Atom)separator.complement(); - } - public Maximal(final Atom e, boolean zeroOkay, boolean manyOkay, Object tag) { - super(e, zeroOkay, manyOkay, null, true, tag); - for(Sequence s : this) - s.follow = (Atom)e.complement(); - } - } - -}