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

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

parse_action_table()
Simple constructor.

Method Summary

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.
String
toString()

Field Details

_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 Details

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 Details

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.

num_states

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

toString

public String toString()