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
Constructor and Description |
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OpCapture(Operation childOp,
int group) |
Modifier and Type | Method and Description |
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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 int groupNr
public Operation childOp
public OpCapture(Operation childOp, int group)
public int getMatchLength()
Operation
getMatchLength
in class Operation
public boolean matchesEmptyString()
Operation
matchesEmptyString
in class Operation
public Operation optimize(REProgram program, REFlags flags)
Operation
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 matchCopyright (c) 2004-2018 Saxonica Limited. All rights reserved.