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symbol_set
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SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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java_cup</FONT>
<BR>
Class symbol_set</H2>
<PRE>
java.lang.Object
<IMG SRC="../resources/inherit.gif" ALT="extended by "><B>java_cup.symbol_set</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>symbol_set</B><DT>extends java.lang.Object</DL>
</PRE>
<P>
This class represents a set of symbols and provides a series of
set operations to manipulate them.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>last updated: 11/25/95</DD>
<DT><B>Author:</B></DT>
<DD>Scott Hudson</DD>
<DT><B>See Also:</B><DD><A HREF="../java_cup/symbol.html" title="class in java_cup"><CODE>symbol</CODE></A></DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
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<CODE>protected java.util.Hashtable</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#_all">_all</A></B></CODE>
<BR>
A hash table to hold the set.</TD>
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<TD><CODE><B><A HREF="../java_cup/symbol_set.html#symbol_set()">symbol_set</A></B>()</CODE>
<BR>
Constructor for an empty set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#symbol_set(java_cup.symbol_set)">symbol_set</A></B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</CODE>
<BR>
Constructor for cloning from another set.</TD>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#add(java_cup.symbol_set)">add</A></B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</CODE>
<BR>
Add (union) in a complete set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#add(java_cup.symbol)">add</A></B>(<A HREF="../java_cup/symbol.html" title="class in java_cup">symbol</A> sym)</CODE>
<BR>
Add a single symbol to the set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.util.Enumeration</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#all()">all</A></B>()</CODE>
<BR>
Access to all elements of the set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#contains(java_cup.symbol)">contains</A></B>(<A HREF="../java_cup/symbol.html" title="class in java_cup">symbol</A> sym)</CODE>
<BR>
Determine if the set contains a particular symbol.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object other)</CODE>
<BR>
Generic equality comparison.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#equals(java_cup.symbol_set)">equals</A></B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</CODE>
<BR>
Equality comparison.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#hashCode()">hashCode</A></B>()</CODE>
<BR>
Compute a hash code.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#is_subset_of(java_cup.symbol_set)">is_subset_of</A></B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</CODE>
<BR>
Determine if this set is an (improper) subset of another.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#is_superset_of(java_cup.symbol_set)">is_superset_of</A></B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</CODE>
<BR>
Determine if this set is an (improper) superset of another.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#not_null(java.lang.Object)">not_null</A></B>(java.lang.Object obj)</CODE>
<BR>
Helper function to test for a null object and throw an exception
if one is found.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#remove(java_cup.symbol_set)">remove</A></B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</CODE>
<BR>
Remove (set subtract) a complete set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#remove(java_cup.symbol)">remove</A></B>(<A HREF="../java_cup/symbol.html" title="class in java_cup">symbol</A> sym)</CODE>
<BR>
Remove a single symbol if it is in the set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#size()">size</A></B>()</CODE>
<BR>
size of the set</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../java_cup/symbol_set.html#toString()">toString</A></B>()</CODE>
<BR>
Convert to a string.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
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<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="_all"><!-- --></A><H3>
_all</H3>
<PRE>
protected java.util.Hashtable <B>_all</B></PRE>
<DL>
<DD>A hash table to hold the set. Symbols are keyed using their name string.
<P>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="symbol_set()"><!-- --></A><H3>
symbol_set</H3>
<PRE>
public <B>symbol_set</B>()</PRE>
<DL>
<DD>Constructor for an empty set.
<P>
</DL>
<HR>
<A NAME="symbol_set(java_cup.symbol_set)"><!-- --></A><H3>
symbol_set</H3>
<PRE>
public <B>symbol_set</B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Constructor for cloning from another set.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - the set we are cloning from.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="all()"><!-- --></A><H3>
all</H3>
<PRE>
public java.util.Enumeration <B>all</B>()</PRE>
<DL>
<DD>Access to all elements of the set.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="size()"><!-- --></A><H3>
size</H3>
<PRE>
public int <B>size</B>()</PRE>
<DL>
<DD>size of the set
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="not_null(java.lang.Object)"><!-- --></A><H3>
not_null</H3>
<PRE>
protected void <B>not_null</B>(java.lang.Object obj)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Helper function to test for a null object and throw an exception
if one is found.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>obj</CODE> - the object we are testing.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="contains(java_cup.symbol)"><!-- --></A><H3>
contains</H3>
<PRE>
public boolean <B>contains</B>(<A HREF="../java_cup/symbol.html" title="class in java_cup">symbol</A> sym)</PRE>
<DL>
<DD>Determine if the set contains a particular symbol.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sym</CODE> - the symbol we are looking for.</DL>
</DD>
</DL>
<HR>
<A NAME="is_subset_of(java_cup.symbol_set)"><!-- --></A><H3>
is_subset_of</H3>
<PRE>
public boolean <B>is_subset_of</B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Determine if this set is an (improper) subset of another.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - the set we are testing against.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="is_superset_of(java_cup.symbol_set)"><!-- --></A><H3>
is_superset_of</H3>
<PRE>
public boolean <B>is_superset_of</B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Determine if this set is an (improper) superset of another.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - the set we are are testing against.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="add(java_cup.symbol)"><!-- --></A><H3>
add</H3>
<PRE>
public boolean <B>add</B>(<A HREF="../java_cup/symbol.html" title="class in java_cup">symbol</A> sym)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Add a single symbol to the set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sym</CODE> - the symbol we are adding.
<DT><B>Returns:</B><DD>true if this changes the set.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="remove(java_cup.symbol)"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>(<A HREF="../java_cup/symbol.html" title="class in java_cup">symbol</A> sym)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Remove a single symbol if it is in the set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sym</CODE> - the symbol we are removing.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="add(java_cup.symbol_set)"><!-- --></A><H3>
add</H3>
<PRE>
public boolean <B>add</B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Add (union) in a complete set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - the set we are adding in.
<DT><B>Returns:</B><DD>true if this changes the set.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="remove(java_cup.symbol_set)"><!-- --></A><H3>
remove</H3>
<PRE>
public void <B>remove</B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)
throws <A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></PRE>
<DL>
<DD>Remove (set subtract) a complete set.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - the set we are removing.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../java_cup/internal_error.html" title="class in java_cup">internal_error</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="equals(java_cup.symbol_set)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="../java_cup/symbol_set.html" title="class in java_cup">symbol_set</A> other)</PRE>
<DL>
<DD>Equality comparison.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object other)</PRE>
<DL>
<DD>Generic equality comparison.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Compute a hash code.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>hashCode</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Convert to a string.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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