checkpoint

[sbp.git] / src / edu / berkeley / sbp / Repeat.java

diff --git a/src/edu/berkeley/sbp/Repeat.java b/src/edu/berkeley/sbp/Repeat.java
deleted file mode 100644 (file)
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();
-        }
-    }
-
-}