--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/com/sun/java_cup/internal/runtime/Symbol.java	Thu Apr 12 08:38:26 2012 -0700
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.java_cup.internal.runtime;
+
+/**
+ * Defines the Symbol class, which is used to represent all terminals
+ * and nonterminals while parsing.  The lexer should pass CUP Symbols
+ * and CUP returns a Symbol.
+ *
+ * @author  Frank Flannery
+ */
+
+/* ****************************************************************
+  Class Symbol
+  what the parser expects to receive from the lexer.
+  the token is identified as follows:
+  sym:    the symbol type
+  parse_state: the parse state.
+  value:  is the lexical value of type Object
+  left :  is the left position in the original input file
+  right:  is the right position in the original input file
+******************************************************************/
+
+public class Symbol {
+
+/*******************************
+  Constructor for l,r values
+ *******************************/
+
+  public Symbol(int id, int l, int r, Object o) {
+    this(id);
+    left = l;
+    right = r;
+    value = o;
+  }
+
+/*******************************
+  Constructor for no l,r values
+********************************/
+
+  public Symbol(int id, Object o) {
+    this(id);
+    left = -1;
+    right = -1;
+    value = o;
+  }
+
+/*****************************
+  Constructor for no value
+  ***************************/
+
+  public Symbol(int sym_num, int l, int r) {
+    sym = sym_num;
+    left = l;
+    right = r;
+    value = null;
+  }
+
+/***********************************
+  Constructor for no value or l,r
+***********************************/
+
+  public Symbol(int sym_num) {
+    this(sym_num, -1);
+    left = -1;
+    right = -1;
+    value = null;
+  }
+
+/***********************************
+  Constructor to give a start state
+***********************************/
+  public Symbol(int sym_num, int state)
+    {
+      sym = sym_num;
+      parse_state = state;
+    }
+
+/*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** The symbol number of the terminal or non terminal being represented */
+  public int sym;
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** The parse state to be recorded on the parse stack with this symbol.
+   *  This field is for the convenience of the parser and shouldn't be
+   *  modified except by the parser.
+   */
+  public int parse_state;
+  /** This allows us to catch some errors caused by scanners recycling
+   *  symbols.  For the use of the parser only. [CSA, 23-Jul-1999] */
+  boolean used_by_parser = false;
+
+/*******************************
+  The data passed to parser
+ *******************************/
+
+  public int left, right;
+  public Object value;
+
+  /*****************************
+    Printing this token out. (Override for pretty-print).
+    ****************************/
+  public String toString() { return "#"+sym; }
+}