weka.core.parser.java_cup
Class action_production

java.lang.Object
  extended by weka.core.parser.java_cup.production
      extended by weka.core.parser.java_cup.action_production

public class action_production
extends production

A specialized version of a production used when we split an existing production in order to remove an embedded action. Here we keep a bit of extra bookkeeping so that we know where we came from.

Version:
last updated: 11/25/95
Author:
Scott Hudson

Constructor Summary
action_production(production base, non_terminal lhs_sym, production_part[] rhs_parts, int rhs_len, java.lang.String action_str, int indexOfIntermediateResult)
          Constructor.
 
Method Summary
 production base_production()
          The production we were taken out of.
 int getIndexOfIntermediateResult()
           
 
Methods inherited from class weka.core.parser.java_cup.production
action, all, check_first_set, check_nullable, clear, equals, equals, find, first_set, hashCode, index, lhs, note_reduction_use, nullable_known, nullable, num_reductions, number, precedence_num, precedence_side, rhs_length, rhs, set_precedence_num, set_precedence_side, to_simple_string, toString
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

action_production

public action_production(production base,
                         non_terminal lhs_sym,
                         production_part[] rhs_parts,
                         int rhs_len,
                         java.lang.String action_str,
                         int indexOfIntermediateResult)
                  throws internal_error
Constructor.

Parameters:
base - the production we are being factored out of.
lhs_sym - the LHS symbol for this production.
rhs_parts - array of production parts for the RHS.
rhs_len - how much of the rhs_parts array is valid.
action_str - the trailing reduce action for this production.
indexOfIntermediateResult - the index of the result of the previous intermediate action on the stack relative to top, -1 if no previous action
Throws:
internal_error
Method Detail

getIndexOfIntermediateResult

public int getIndexOfIntermediateResult()
Returns:
the index of the result of the previous intermediate action on the stack relative to top, -1 if no previous action

base_production

public production base_production()
The production we were taken out of.