BranchTrackingVisitor (SonarSource Analyzers Regex Parsing Commons 2.1.0.1111 API)

java.lang.Object
- org.sonarsource.analyzer.commons.regex.ast.RegexBaseVisitor
- - org.sonarsource.analyzer.commons.regex.helpers.BranchTrackingVisitor

All Implemented Interfaces:

RegexVisitor

Direct Known Subclasses:

FailingLookaheadFinder, PossessiveQuantifierContinuationFinder
```
public class BranchTrackingVisitor
extends RegexBaseVisitor
```
The BranchTrackingVisitor saves the nearest enclosing branching construct as it traverses the tree. This helps to track node predecessors, which is useful to avoid cycles during Automaton evaluation.

Constructor Summary

Constructors
Constructor Description

BranchTrackingVisitor()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IndexRange`	`getPredecessorsRangeOf(RegexTree tree)`	Return the range containing all predecessors of the node.
`void`	`visitDisjunction(DisjunctionTree tree)`
`void`	`visitRepetition(RepetitionTree tree)`

Methods inherited from class org.sonarsource.analyzer.commons.regex.ast.RegexBaseVisitor
after, backslash, before, supportsAnyOfFeatures, visit, visit, visitAtomicGroup, visitBackReference, visitBoundary, visitCapturingGroup, visitCharacter, visitCharacterClass, visitCharacterClassIntersection, visitCharacterClassUnion, visitCharacterRange, visitConditionalSubpattern, visitDot, visitEscapedCharacterClass, visitGroup, visitInCharClass, visitLookAround, visitMiscEscapeSequence, visitNonCapturingGroup, visitSequence

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - BranchTrackingVisitor
```
public BranchTrackingVisitor()
```
- Method Detail
  - visitDisjunction
```
public void visitDisjunction(DisjunctionTree tree)
```
    Specified by:
    
    visitDisjunction in interface RegexVisitor
    
    Overrides:
    
    visitDisjunction in class RegexBaseVisitor
  - visitRepetition
```
public void visitRepetition(RepetitionTree tree)
```
    Specified by:
    
    visitRepetition in interface RegexVisitor
    
    Overrides:
    
    visitRepetition in class RegexBaseVisitor
  - getPredecessorsRangeOf
```
public IndexRange getPredecessorsRangeOf(RegexTree tree)
```
    Return the range containing all predecessors of the node. If all paths from a node lead to another, then the former is a predecessor of the latter
    
    Parameters:
    
    tree - a node
    
    Returns:
    
    IndexRange for all the node's predecessors