Package java_cup

Class parse_action_table

  • public class parse_action_table
extends java.lang.Object
    This class represents the complete "action" table of the parser. It has one row for each state in the parse machine, and a column for each terminal symbol. Each entry in the table represents a shift, reduce, or an error.
    Version:
    last updated: 11/25/95
    Author:
    Scott Hudson
    See Also:
    parse_action, parse_action_row

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected int _num_states
      How many rows/states are in the machine/table.
      parse_action_row[] under_state
      Actual array of rows, one per state.

    • Constructor Summary

      Constructors 
      Constructor Description
      parse_action_table()
      Simple constructor.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void check_reductions()
      Check the table to ensure that all productions have been reduced.
      int num_states()
      How many rows/states are in the machine/table.
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • _num_states

        protected int _num_states
        How many rows/states are in the machine/table.

      • under_state

        public parse_action_row[] under_state
        Actual array of rows, one per state.

    • Constructor Detail

      • parse_action_table

        public parse_action_table()
        Simple constructor. All terminals, non-terminals, and productions must already have been entered, and the viable prefix recognizer should have been constructed before this is called.

    • Method Detail

      • num_states

        public int num_states()
        How many rows/states are in the machine/table.

      • check_reductions

        public void check_reductions()
                      throws internal_error
        Check the table to ensure that all productions have been reduced. Issue a warning message (to System.err) for each production that is never reduced.
        Throws:
        internal_error

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object