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org.eclipse.compare.rangedifferencer
Interface IRangeComparator
- public interface IRangeComparator
For breaking an object to compare into a sequence of comparable entities.
It is used by RangeDifferencer to find longest sequences of
matching and non-matching ranges.
For example, to compare two text documents and find longest common sequences
of matching and non-matching lines, the implementation must break the document
into lines. getRangeCount would return the number of lines in the
document, and rangesEqual would compare a specified line given
with one in another IRangeComparator.
Clients should implement this interface; there is no standard implementation.
| Method Summary | |
int |
getRangeCount()
Returns the number of comparable entities. |
boolean |
rangesEqual(int thisIndex,
IRangeComparator other,
int otherIndex)
Returns whether the comparable entity given by the first index matches an entity specified by the other IRangeComparator and index. |
boolean |
skipRangeComparison(int length,
int maxLength,
IRangeComparator other)
Returns whether a comparison should be skipped because it would be too costly (or lengthy). |
| Method Detail |
getRangeCount
public int getRangeCount()
- Returns the number of comparable entities.
rangesEqual
public boolean rangesEqual(int thisIndex,
IRangeComparator other,
int otherIndex)
- Returns whether the comparable entity given by the first index
matches an entity specified by the other
IRangeComparatorand index.
skipRangeComparison
public boolean skipRangeComparison(int length,
int maxLength,
IRangeComparator other)
- Returns whether a comparison should be skipped because it would be too costly (or lengthy).
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