ActionLabel

java.lang.Object
- org.antlr.analysis.Label
- - org.antlr.analysis.ActionLabel

All Implemented Interfaces:

java.lang.Cloneable, java.lang.Comparable<Label>
```
public class ActionLabel
extends Label
```

Field Summary

Fields
Modifier and Type Field Description

GrammarAST actionAST
- Fields inherited from class org.antlr.analysis.Label
  ACTION, DOWN, EOF, EOR_TOKEN_TYPE, EOT, EPSILON, EPSILON_STR, INVALID, label, labelSet, MAX_CHAR_VALUE, MIN_ATOM_VALUE, MIN_CHAR_VALUE, MIN_TOKEN_TYPE, NUM_FAUX_LABELS, SEMPRED, SET, UP

Constructor Summary

Constructors
Constructor Description

ActionLabel(GrammarAST actionAST)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isAction()`
`boolean`	`isEpsilon()`
`java.lang.String`	`toString()`	Predicates are lists of AST nodes from the NFA created from the grammar, but the same predicate could be cut/paste into multiple places in the grammar.
`java.lang.String`	`toString(Grammar g)`

Methods inherited from class org.antlr.analysis.Label
add, clone, compareTo, equals, getAtom, getSemanticContext, getSet, hashCode, intersect, isAtom, isSemanticPredicate, isSet, matches, matches, matches, setSet

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - actionAST
```
public GrammarAST actionAST
```
- Constructor Detail
  - ActionLabel
```
public ActionLabel(GrammarAST actionAST)
```
- Method Detail
  - isEpsilon
```
public boolean isEpsilon()
```
    Overrides:
    
    isEpsilon in class Label
  - isAction
```
public boolean isAction()
```
    Overrides:
    
    isAction in class Label
  - toString
```
public java.lang.String toString()
```
    Description copied from class: Label
    
    Predicates are lists of AST nodes from the NFA created from the grammar, but the same predicate could be cut/paste into multiple places in the grammar. I must compare the text of all the predicates to truly answer whether {p1,p2} .equals {p1,p2}. Unfortunately, I cannot rely on the AST.equals() to work properly so I must do a brute force O(n^2) nested traversal of the Set doing a String compare. At this point, Labels are not compared for equals when they are predicates, but here's the code for future use.
    
    Overrides:
    
    toString in class Label
  - toString
```
public java.lang.String toString(Grammar g)
```
    Overrides:
    
    toString in class Label