+++ /dev/null
-
-package java_cup;
-
-import java.util.Enumeration;
-
-/** This class represents the complete "reduce-goto" table of the parser.
- * It has one row for each state in the parse machines, and a column for
- * each terminal symbol. Each entry contains a state number to shift to
- * as the last step of a reduce.
- *
- * @see java_cup.parse_reduce_row
- * @version last updated: 11/25/95
- * @author Scott Hudson
- */
-public class parse_reduce_table {
-
- /*-----------------------------------------------------------*/
- /*--- Constructor(s) ----------------------------------------*/
- /*-----------------------------------------------------------*/
-
- /** Simple constructor. Note: all terminals, non-terminals, and productions
- * must already have been entered, and the viable prefix recognizer should
- * have been constructed before this is called.
- */
- public parse_reduce_table()
- {
- /* determine how many states we are working with */
- _num_states = lalr_state.number();
-
- /* allocate the array and fill it in with empty rows */
- under_state = new parse_reduce_row[_num_states];
- for (int i=0; i<_num_states; i++)
- under_state[i] = new parse_reduce_row();
- }
-
-
- /*-----------------------------------------------------------*/
- /*--- (Access to) Instance Variables ------------------------*/
- /*-----------------------------------------------------------*/
-
- /** How many rows/states in the machine/table. */
- protected int _num_states;
-
- /** How many rows/states in the machine/table. */
- public int num_states() {return _num_states;}
-
- /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
-
- /** Actual array of rows, one per state */
- public parse_reduce_row[] under_state;
-
- /*-----------------------------------------------------------*/
- /*--- General Methods ---------------------------------------*/
- /*-----------------------------------------------------------*/
-
- /** Convert to a string. */
- public String toString()
- {
- String result;
- lalr_state goto_st;
- int cnt;
-
- result = "-------- REDUCE_TABLE --------\n";
- for (int row = 0; row < num_states(); row++)
- {
- result += "From state #" + row + "\n";
- cnt = 0;
- for (int col = 0; col < under_state[row].size(); col++)
- {
- /* pull out the table entry */
- goto_st = under_state[row].under_non_term[col];
-
- /* if it has action in it, print it */
- if (goto_st != null)
- {
- result += " [non term " + col + "->";
- result += "state " + goto_st.index() + "]";
-
- /* end the line after the 3rd one */
- cnt++;
- if (cnt == 3)
- {
- result += "\n";
- cnt = 0;
- }
- }
- }
- /* finish the line if we haven't just done that */
- if (cnt != 0) result += "\n";
- }
- result += "-----------------------------";
-
- return result;
- }
-
- /*-----------------------------------------------------------*/
-
-}
-