org.antlr.analysis
Class Transition
java.lang.Object
org.antlr.analysis.Transition
- All Implemented Interfaces:
- java.lang.Comparable
- Direct Known Subclasses:
- RuleClosureTransition
public class Transition
- extends java.lang.Object
- implements java.lang.Comparable
A generic transition between any two state machine states. It defines
some special labels that indicate things like epsilon transitions and
that the label is actually a set of labels or a semantic predicate.
This is a one way link. It emanates from a state (usually via a list of
transitions) and has a label/target pair. I have abstracted the notion
of a Label to handle the various kinds of things it can be.
Field Summary |
Label |
label
What label must be consumed to transition to target |
State |
target
The target of this transition |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
label
public Label label
- What label must be consumed to transition to target
target
public State target
- The target of this transition
Transition
public Transition(Label label,
State target)
Transition
public Transition(int label,
State target)
isEpsilon
public boolean isEpsilon()
isAction
public boolean isAction()
isSemanticPredicate
public boolean isSemanticPredicate()
hashCode
public int hashCode()
- Overrides:
hashCode
in class java.lang.Object
equals
public boolean equals(java.lang.Object o)
- Overrides:
equals
in class java.lang.Object
compareTo
public int compareTo(java.lang.Object o)
- Specified by:
compareTo
in interface java.lang.Comparable
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object
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