LL1OptionalBlock

org.antlr.v4.codegen.model

Class LL1OptionalBlock

java.lang.Object
- org.antlr.v4.codegen.model.OutputModelObject
- - org.antlr.v4.codegen.model.SrcOp
  - - org.antlr.v4.codegen.model.RuleElement
    - - org.antlr.v4.codegen.model.Choice
      - org.antlr.v4.codegen.model.LL1Choice
        
        org.antlr.v4.codegen.model.LL1AltBlock
        
        org.antlr.v4.codegen.model.LL1OptionalBlock

```
public class LL1OptionalBlock
extends LL1AltBlock
```
An optional block is just an alternative block where the last alternative is epsilon. The analysis takes care of adding to the empty alternative. (A | B | C)?

Field Summary
- Fields inherited from class org.antlr.v4.codegen.model.LL1Choice
  altLook, error
- Fields inherited from class org.antlr.v4.codegen.model.Choice
  alts, decision, label, preamble
- Fields inherited from class org.antlr.v4.codegen.model.RuleElement
  stateNumber
- Fields inherited from class org.antlr.v4.codegen.model.SrcOp
  enclosingBlock, enclosingRuleRunction, uniqueID
- Fields inherited from class org.antlr.v4.codegen.model.OutputModelObject
  ast, factory

Constructor Summary

Constructors

Constructor and Description
`LL1OptionalBlock(OutputModelFactory factory, GrammarAST blkAST, List<CodeBlockForAlt> alts)`

Method Summary
- Methods inherited from class org.antlr.v4.codegen.model.Choice
  addCodeForLookaheadTempVar, addPreambleOp, getAltLookaheadAsStringLists, getThrowNoViableAlt
- Methods inherited from class org.antlr.v4.codegen.model.SrcOp
  getContextName, getOuterMostAltCodeBlock
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LL1OptionalBlock

public LL1OptionalBlock(OutputModelFactory factory,
                        GrammarAST blkAST,
                        List<CodeBlockForAlt> alts)