Package java_cup
Class parse_action_row
- java.lang.Object
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- java_cup.parse_action_row
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public class parse_action_row extends java.lang.Object
This class represents one row (corresponding to one machine state) of the parse action table.
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Field Summary
Fields Modifier and Type Field Description 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.
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Constructor Summary
Constructors Constructor Description parse_action_row()
Simple constructor.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description 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.
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Field Detail
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_size
protected static int _size
Number of columns (terminals) in every row.
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reduction_count
protected static int[] reduction_count
Table of reduction counts (reused by compute_default()).
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under_term
public parse_action[] under_term
Actual action entries for the row.
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default_reduce
public int default_reduce
Default (reduce) action for this row. -1 will represent default of error.
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Method Detail
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size
public static int size()
Number of columns (terminals) in every row.
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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).
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