org.antlr.analysis
Class ActionLabel
java.lang.Object
org.antlr.analysis.Label
org.antlr.analysis.ActionLabel
- All Implemented Interfaces:
- java.lang.Cloneable, java.lang.Comparable
public class ActionLabel
- extends Label
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 |
Method Summary |
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 |
actionAST
public GrammarAST actionAST
ActionLabel
public ActionLabel(GrammarAST actionAST)
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
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