java_cup
Class parse_action_row
java.lang.Object
|
+--java_cup.parse_action_row
- public class parse_action_row
- extends java.lang.Object
This class represents one row (corresponding to one machine state) of the
parse action table.
Field Summary |
protected static int |
_size
Number of columns (terminals) in every row. |
int |
default_reduce
Default (reduce) action for this row. |
protected static int[] |
reduction_count
Table of reduction counts (reused by compute_default()). |
parse_action[] |
under_term
Actual action entries for the row. |
Method Summary |
void |
compute_default()
Compute the default (reduce) action for this row and store it in
default_reduce. |
static int |
size()
Number of columns (terminals) in every row. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
_size
protected static int _size
- Number of columns (terminals) in every row.
reduction_count
protected static int[] reduction_count
- Table of reduction counts (reused by compute_default()).
under_term
public parse_action[] under_term
- Actual action entries for the row.
default_reduce
public int default_reduce
- Default (reduce) action for this row. -1 will represent default
of error.
parse_action_row
public parse_action_row()
- Simple constructor. Note: this should not be used until the number of
terminals in the grammar has been established.
size
public static int size()
- Number of columns (terminals) in every row.
compute_default
public void compute_default()
- Compute the default (reduce) action for this row and store it in
default_reduce. In the case of non-zero default we will have the
effect of replacing all errors by that reduction. This may cause
us to do erroneous reduces, but will never cause us to shift past
the point of the error and never cause an incorrect parse. -1 will
be used to encode the fact that no reduction can be used as a
default (in which case error will be used).