X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FSequence.java;h=e09ff720a3cab47f5356130662b5b04ef164bf91;hp=e5e984f4e95b307c10b60b61e0c67e5aac07bab1;hb=b205c5ee125119b0372328b70e8a66164df18fd0;hpb=c48a9498daf7604e41cf4aea7f6f7110388fd659

diff --git a/src/edu/berkeley/sbp/Sequence.java b/src/edu/berkeley/sbp/Sequence.java
index e5e984f..e09ff72 100644
--- a/src/edu/berkeley/sbp/Sequence.java
+++ b/src/edu/berkeley/sbp/Sequence.java
@@ -18,6 +18,7 @@ public abstract class Sequence extends Element implements Iterable<Element> {
         for(Sequence s : needs) { ret.needs.add(s); s.needed.add(ret); }
         for(Sequence s : hates) { ret.hates.add(s); s.hated.add(ret); }
         ret.follow = follow;
+        ret.lame = lame;
         return ret;
     }
 
@@ -38,7 +39,8 @@ public abstract class Sequence extends Element implements Iterable<Element> {
      *  after matching the sequence, create the specified output tree
      *  @param tag   the tag for the output tree
      *  @param e     the elements to match
-     *  @param drops only elements of <tt>e</tt> whose corresponding <tt>boolean</tt> in <tt>drops</tt> is <i>false</i> will be included in the output tree
+     *  @param drops only elements of <tt>e</tt> whose corresponding <tt>boolean</tt> in <tt>drops</tt>
+     *               is <i>false</i> will be included in the output tree
      **/
     public static Sequence rewritingSequence(Object tag, Element[] e, Object[] labs, boolean[] drops) {
         return new RewritingSequence(tag, e, labs, drops); }
@@ -49,7 +51,8 @@ public abstract class Sequence extends Element implements Iterable<Element> {
     public final Topology follow() { return follow==null ? null : Atom.toAtom(follow); }
 
     Topology toAtom() {
-        if (elements.length!=1) throw new RuntimeException("cannot invoke toAtom() on a Sequence with " + elements.length + " elements: " + this);
+        if (elements.length!=1)
+            throw new RuntimeException("cannot invoke toAtom() on a Sequence with " + elements.length + " elements: " + this);
         return Atom.toAtom(elements[0]);
     }
 
@@ -59,9 +62,9 @@ public abstract class Sequence extends Element implements Iterable<Element> {
     protected final Element[] elements;
 
     final HashSet<Sequence> needed = new HashSet<Sequence>();
-    final HashSet<Sequence> hated = new HashSet<Sequence>();
-    final HashSet<Sequence> needs = new HashSet<Sequence>();
-    final HashSet<Sequence> hates = new HashSet<Sequence>();
+    final HashSet<Sequence> hated  = new HashSet<Sequence>();
+    final HashSet<Sequence> needs  = new HashSet<Sequence>();
+    final HashSet<Sequence> hates  = new HashSet<Sequence>();
     public boolean           lame  = false;
 
     final Position          firstp;
@@ -133,7 +136,7 @@ public abstract class Sequence extends Element implements Iterable<Element> {
                 if (holder[i]==null) throw new Error("bad " + i);
             }
             Forest<T> ret = Sequence.this.postReduce(loc, holder, this);
-            for(int k=0; k<pos; k++) holder[k] = null; // to help GC
+            //for(int k=0; k<pos; k++) holder[k] = null; // to help GC
             return ret;
         }
 
@@ -255,30 +258,37 @@ public abstract class Sequence extends Element implements Iterable<Element> {
     // Repeat //////////////////////////////////////////////////////////////////////////////
 
     /** repeat zero or one times */
-    public  static Repeat maybe(Element e)                             { return new Repeat(e, true, false, null, null); }
-    public  static Repeat maybe(Element e, Object tag)                 { return new Repeat(e, true, false, null, tag); }
+    public  static Element maybe(Element e)                             { return new Repeat(e, true, false, null, null); }
+    public  static Element maybe(Element e, Object tag)                 { return new Repeat(e, true, false, null, tag); }
     /** repeat zero or more times */
-    public  static Repeat many0(Element e)                             { return new Repeat(e, true, true, null, null); }
-    public  static Repeat many0(Element e, Object tag)                 { return new Repeat(e, true, true, null, tag); }
+    public  static Element many0(Element e)                             { return new Repeat(e, true, true, null, null); }
+    public  static Element many0(Element e, Object tag)                 { return new Repeat(e, true, true, null, tag); }
     /** repeat zero or more times, separated by <tt>sep</tt> */
-    public  static Repeat many0(Element e, Element sep)                { return new Repeat(e, true, true, sep, null); }
-    public  static Repeat many0(Element e, Element sep, Object tag)    { return new Repeat(e, true, true, sep, tag); }
+    public  static Element many0(Element e, Element sep)                { return new Repeat(e, true, true, sep, null); }
+    public  static Element many0(Element e, Element sep, Object tag)    { return new Repeat(e, true, true, sep, tag); }
     /** repeat one or more times */
-    public  static Repeat many1(Element e)                             { return new Repeat(e, false, true, null, null); }
-    public  static Repeat many1(Element e, Object tag)                 { return new Repeat(e, false, true, null, tag); }
+    public  static Element many1(Element e)                             { return new Repeat(e, false, true, null, null); }
+    public  static Element many1(Element e, Object tag)                 { return new Repeat(e, false, true, null, tag); }
     /** repeat one or more times, separated by <tt>sep</tt> */
-    public  static Repeat many1(Element e, Element sep)                { return new Repeat(e, false, true, sep, null); }
-    public  static Repeat many1(Element e, Element sep, Object tag)    { return new Repeat(e, false, true, sep, tag); }
+    public  static Element many1(Element e, Element sep)                { return new Repeat(e, false, true, sep, null); }
+    public  static Element many1(Element e, Element sep, Object tag)    { return new Repeat(e, false, true, sep, tag); }
 
     /** repeat zero or more times, matching a maximal sequence of atoms */
-    public  static Repeat maximal0(Atom e)                             { return new Repeat.Maximal(e, true, true, null); }
-    public  static Repeat maximal0(Atom e, Object tag)                 { return new Repeat.Maximal(e, true, true, tag); }
+    public  static Element maximal0(Atom e)                             { return new Repeat.Maximal(e, true, true, null); }
+    public  static Element maximal0(Atom e, Object tag)                 { return new Repeat.Maximal(e, true, true, tag); }
     /** repeat one or more times, matching a maximal sequence of atoms */
-    public  static Repeat maximal1(Atom e)                             { return new Repeat.Maximal(e, false, true, null); }
-    public  static Repeat maximal1(Atom e, Object tag)                 { return new Repeat.Maximal(e, false, true, tag); }
+    public  static Element maximal1(Atom e)                             { return new Repeat.Maximal(e, false, true, null); }
+    public  static Element maximal1(Atom e, Object tag)                 { return new Repeat.Maximal(e, false, true, tag); }
     /** repeat one or more times, separated by an atom <tt>sep</tt>, matching a maximal sequence */
-    public  static Repeat maximal1(Element e, Atom sep)                { return new Repeat.Maximal(e, false, true, sep, null); }
-    public  static Repeat maximal1(Element e, Atom sep, Object tag)    { return new Repeat.Maximal(e, false, true, sep, tag); }
-
-
+    public  static Element maximal1(Element e, Atom sep)                { return new Repeat.Maximal(e, false, true, sep, null); }
+    public  static Element maximal1(Element e, Atom sep, Object tag)    { return new Repeat.Maximal(e, false, true, sep, tag); }
+
+    public  static Element repeatMaximal(Atom e, boolean zero, boolean many, Object tag) {
+        return new Repeat.Maximal(e, zero, many, tag); }
+    public  static Element repeatMaximal(Element e, boolean zero, boolean many, Atom sep, Object tag) {
+        return new Repeat.Maximal(e, zero, many, sep, tag); }
+    public  static Element repeat(Element e, boolean zero, boolean many, Object tag) {
+        return new Repeat(e, zero, many, tag); }
+    public  static Element repeat(Element e, boolean zero, boolean many, Element sep, Object tag) {
+        return new Repeat(e, zero, many, sep, tag); }
 }