java_cup

Class parse_action_table

java.lang.Object

java_cup.parse_action_table

public class parse_action_table
extends 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 and 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 and Description
parse_action_table() Simple constructor.

Method Summary

Modifier and Type	Method and 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.
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 String toString()

Overrides:

toString in class Object