Operation.OpAtom, Operation.OpBackReference, Operation.OpBOL, Operation.OpCapture, Operation.OpCharClass, Operation.OpChoice, Operation.OpEndProgram, Operation.OpEOL, Operation.OpGreedyFixed, Operation.OpNothing, Operation.OpReluctantFixed, Operation.OpRepeat, Operation.OpSequence, Operation.OpTrace, Operation.OpUnambiguousRepeat
Modifier and Type | Method and Description |
---|---|
java.lang.String |
display()
Display the operation as a regular expression, possibly in abbreviated form
|
int |
getMatchLength()
Get the length of the matches returned by this operation if they are fixed-length
|
IntIterator |
iterateMatches(REMatcher matcher,
int position)
Get an iterator returning all the matches for this operation
|
boolean |
matchesEmptyString()
Ask whether the regular expression is capable of matching a zero-length string
|
Operation |
optimize(REProgram program,
REFlags flags)
Optimize the operation
|
containsCapturingExpressions, getInitialCharacterClass, getMinimumMatchLength
public OpTrace(Operation base)
public IntIterator iterateMatches(REMatcher matcher, int position)
Operation
iterateMatches
in class Operation
matcher
- supplies the context for the matching; may be updated with information about
captured groupsposition
- the start position to seek a matchpublic int getMatchLength()
Operation
getMatchLength
in class Operation
public boolean matchesEmptyString()
Operation
matchesEmptyString
in class Operation
public Operation optimize(REProgram program, REFlags flags)
Operation
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