File Doc Category Size Date Package
parse_action.java API Doc Java SE 5 API 2826 Fri Aug 26 14:54:54 BST 2005 com.sun.java_cup.internal

parse_action

java.lang.Object

public class parse_action extends Object

This class serves as the base class for entries in a parse action table. Full entries will either be SHIFT(state_num), REDUCE(production), NONASSOC, or ERROR. Objects of this base class will default to ERROR, while the other three types will be represented by subclasses.

see: com.sun.java_cup.internal.reduce_action
see: com.sun.java_cup.internal.shift_action
version: last updated: 7/2/96
author: Frank Flannery

Fields Summary
public static final int
ERROR
Constant for action type -- error action.
public static final int
SHIFT
Constant for action type -- shift action.
public static final int
REDUCE
Constants for action type -- reduce action.
public static final int
NONASSOC
Constants for action type -- reduce action.
Constructors Summary
public parse_action()
Simple constructor.
/* nothing to do in the base class */
Methods Summary
public boolean equals(com.sun.java_cup.internal.parse_action other)
Equality test.
/* we match all error actions */ return other != null && other.kind() == ERROR;
public boolean equals(java.lang.Object other)
Generic equality test.
if (other instanceof parse_action) return equals((parse_action)other); else return false;
public int hashCode()
Compute a hash code.
/* all objects of this class hash together */ return 0xCafe123;
public int kind()
Quick access to the type -- base class defaults to error.
/*-----------------------------------------------------------*/ /*--- General Methods ---------------------------------------*/ /*-----------------------------------------------------------*/ return ERROR;
public java.lang.String toString()
Convert to string.
return "ERROR";