//----------------------------------------------------
// The following code was generated by CUP v0.10j
// Fri Sep 17 22:30:04 GMT-06:00 2004
//----------------------------------------------------
package Example;
import java_cup.runtime.*;
/** CUP v0.10j generated parser.
* @version Fri Sep 17 22:30:04 GMT-06:00 2004
*/
public class parser extends java_cup.runtime.lr_parser {
/** Default constructor. */
public parser() {super();}
/** Constructor which sets the default scanner. */
public parser(java_cup.runtime.Scanner s) {super(s);}
/** Production table. */
protected static final short _production_table[][] =
unpackFromStrings(new String[] {
"\000\011\000\002\003\004\000\002\002\004\000\002\003" +
"\003\000\002\006\002\000\002\004\005\000\002\005\003" +
"\000\002\005\005\000\002\005\005\000\002\005\005" });
/** Access to production table. */
public short[][] production_table() {return _production_table;}
/** Parse-action table. */
protected static final short[][] _action_table =
unpackFromStrings(new String[] {
"\000\020\000\006\007\010\011\005\001\002\000\010\002" +
"\uffff\007\uffff\011\uffff\001\002\000\012\004\ufffc\005\ufffc" +
"\006\ufffc\010\ufffc\001\002\000\010\002\022\007\010\011" +
"\005\001\002\000\010\004\ufffe\005\013\006\014\001\002" +
"\000\006\007\010\011\005\001\002\000\010\005\013\006" +
"\014\010\012\001\002\000\012\004\ufff9\005\ufff9\006\ufff9" +
"\010\ufff9\001\002\000\006\007\010\011\005\001\002\000" +
"\006\007\010\011\005\001\002\000\012\004\ufffa\005\ufffa" +
"\006\ufffa\010\ufffa\001\002\000\012\004\ufffb\005\ufffb\006" +
"\014\010\ufffb\001\002\000\004\004\020\001\002\000\010" +
"\002\ufffd\007\ufffd\011\ufffd\001\002\000\010\002\001\007" +
"\001\011\001\001\002\000\004\002\000\001\002" });
/** Access to parse-action table. */
public short[][] action_table() {return _action_table;}
/** reduce_goto table. */
protected static final short[][] _reduce_table =
unpackFromStrings(new String[] {
"\000\020\000\010\003\005\004\003\005\006\001\001\000" +
"\002\001\001\000\002\001\001\000\006\004\020\005\006" +
"\001\001\000\004\006\016\001\001\000\004\005\010\001" +
"\001\000\002\001\001\000\002\001\001\000\004\005\015" +
"\001\001\000\004\005\014\001\001\000\002\001\001\000" +
"\002\001\001\000\002\001\001\000\002\001\001\000\002" +
"\001\001\000\002\001\001" });
/** Access to reduce_goto table. */
public short[][] reduce_table() {return _reduce_table;}
/** Instance of action encapsulation class. */
protected CUP$parser$actions action_obj;
/** Action encapsulation object initializer. */
protected void init_actions()
{
action_obj = new CUP$parser$actions(this);
}
/** Invoke a user supplied parse action. */
public java_cup.runtime.Symbol do_action(
int act_num,
java_cup.runtime.lr_parser parser,
java.util.Stack stack,
int top)
throws java.lang.Exception
{
/* call code in generated class */
return action_obj.CUP$parser$do_action(act_num, parser, stack, top);
}
/** Indicates start state. */
public int start_state() {return 0;}
/** Indicates start production. */
public int start_production() {return 1;}
/** EOF Symbol index. */
public int EOF_sym() {return 0;}
/** error Symbol index. */
public int error_sym() {return 1;}
public static void main(String args[]) throws Exception {
new parser(new Yylex(System.in)).parse();
}
}
/** Cup generated class to encapsulate user supplied action code.*/
class CUP$parser$actions {
private final parser parser;
/** Constructor */
CUP$parser$actions(parser parser) {
this.parser = parser;
}
/** Method with the actual generated action code. */
public final java_cup.runtime.Symbol CUP$parser$do_action(
int CUP$parser$act_num,
java_cup.runtime.lr_parser CUP$parser$parser,
java.util.Stack CUP$parser$stack,
int CUP$parser$top)
throws java.lang.Exception
{
/* Symbol object for return from actions */
java_cup.runtime.Symbol CUP$parser$result;
/* select the action based on the action number */
switch (CUP$parser$act_num)
{
/*. . . . . . . . . . . . . . . . . . . .*/
case 8: // expr ::= LPAREN expr RPAREN
{
Integer RESULT = null;
int eleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-1)).left;
int eright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-1)).right;
Integer e = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-1)).value;
RESULT=e;
CUP$parser$result = new java_cup.runtime.Symbol(3/*expr*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 7: // expr ::= expr TIMES expr
{
Integer RESULT = null;
int lleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left;
int lright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).right;
Integer l = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-2)).value;
int rleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).left;
int rright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right;
Integer r = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-0)).value;
RESULT=new Integer(l.intValue() * r.intValue());
CUP$parser$result = new java_cup.runtime.Symbol(3/*expr*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 6: // expr ::= expr PLUS expr
{
Integer RESULT = null;
int lleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left;
int lright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).right;
Integer l = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-2)).value;
int rleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).left;
int rright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right;
Integer r = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-0)).value;
RESULT=new Integer(l.intValue() + r.intValue());
CUP$parser$result = new java_cup.runtime.Symbol(3/*expr*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 5: // expr ::= NUMBER
{
Integer RESULT = null;
int nleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).left;
int nright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right;
Integer n = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-0)).value;
RESULT=n;
CUP$parser$result = new java_cup.runtime.Symbol(3/*expr*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 4: // expr_part ::= expr NT$0 SEMI
{
Object RESULT = null;
// propagate RESULT from NT$0
if ( ((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-1)).value != null )
RESULT = (Object) ((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-1)).value;
int eleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left;
int eright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).right;
Integer e = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-2)).value;
CUP$parser$result = new java_cup.runtime.Symbol(2/*expr_part*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-2)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 3: // NT$0 ::=
{
Object RESULT = null;
int eleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).left;
int eright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right;
Integer e = (Integer)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-0)).value;
System.out.println(" = "+e+";");
CUP$parser$result = new java_cup.runtime.Symbol(4/*NT$0*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 2: // expr_list ::= expr_part
{
Object RESULT = null;
CUP$parser$result = new java_cup.runtime.Symbol(1/*expr_list*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 1: // $START ::= expr_list EOF
{
Object RESULT = null;
int start_valleft = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-1)).left;
int start_valright = ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-1)).right;
Object start_val = (Object)((java_cup.runtime.Symbol) CUP$parser$stack.elementAt(CUP$parser$top-1)).value;
RESULT = start_val;
CUP$parser$result = new java_cup.runtime.Symbol(0/*$START*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-1)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
/* ACCEPT */
CUP$parser$parser.done_parsing();
return CUP$parser$result;
/*. . . . . . . . . . . . . . . . . . . .*/
case 0: // expr_list ::= expr_list expr_part
{
Object RESULT = null;
CUP$parser$result = new java_cup.runtime.Symbol(1/*expr_list*/, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-1)).left, ((java_cup.runtime.Symbol)CUP$parser$stack.elementAt(CUP$parser$top-0)).right, RESULT);
}
return CUP$parser$result;
/* . . . . . .*/
default:
throw new Exception(
"Invalid action number found in internal parse table");
}
}
}