java_cup

Class action_production

java.lang.Object

java_cup.production

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

Field Summary

Fields

Modifier and Type	Field and Description
protected production	_base_production The production we were taken out of.

Fields inherited from class java_cup.production

_action, _all, _first_set, _index, _lhs, _nullable, _nullable_known, _num_reductions, _rhs, _rhs_assoc, _rhs_length, _rhs_prec, next_index

Constructor Summary

Constructors

Constructor and Description
action_production(production base, non_terminal lhs_sym, production_part[] rhs_parts, int rhs_len, String action_str, int indexOfIntermediateResult) Constructor.

Method Summary

Modifier and Type	Method and Description
production	base_production() The production we were taken out of.
int	getIndexOfIntermediateResult()

Methods inherited from class java_cup.production

action, all, check_first_set, check_nullable, clear, declare_labels, equals, equals, find, first_set, hashCode, index, is_id_char, is_id_start, lhs, make_declaration, merge_adjacent_actions, note_reduction_use, nullable_known, nullable, num_reductions, number, precedence_num, precedence_side, remove_embedded_actions, rhs_length, rhs, set_precedence_num, set_precedence_side, strip_trailing_action, to_simple_string, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_base_production

protected production _base_production

The production we were taken out of.

Constructor Detail

action_production

public action_production(production base,
                         non_terminal lhs_sym,
                         production_part[] rhs_parts,
                         int rhs_len,
                         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.