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[sbp.git]
/
src
/
edu
/
berkeley
/
sbp
/
Tree.java
diff --git
a/src/edu/berkeley/sbp/Tree.java
b/src/edu/berkeley/sbp/Tree.java
index
e7f2ef7
..
6b295a5
100644
(file)
--- a/
src/edu/berkeley/sbp/Tree.java
+++ b/
src/edu/berkeley/sbp/Tree.java
@@
-30,6
+30,13
@@
public class Tree<T> extends PrintableTree<Tree<T>> implements Iterable<Tree<T>>
this.children = children2;
}
this.children = children2;
}
+ /** since Tree instances are immutable, we can cache this to make pretty-printing MUCH faster */
+ public String toString() {
+ if (toString!=null) return toString;
+ return toString = super.toString();
+ }
+ private String toString = null;
+
protected String headToString() { return head==null?null:head.toString(); }
protected String headToJava() { return head==null?null:StringUtil.toJavaString(head+""); }
}
protected String headToString() { return head==null?null:head.toString(); }
protected String headToJava() { return head==null?null:StringUtil.toJavaString(head+""); }
}