EmptyExpansion

java.lang.Object
- com.javacc.parser.BaseNode
- - com.javacc.core.Expansion
  - - com.javacc.core.EmptyExpansion

All Implemented Interfaces:

JavaCCConstants, Node, freemarker.template.TemplateHashModel, freemarker.template.TemplateModel, freemarker.template.TemplateNodeModel, freemarker.template.TemplateScalarModel, Comparable<Node>

Direct Known Subclasses:

Assertion, CodeBlock, Failure, UncacheTokens
```
public abstract class EmptyExpansion
extends Expansion
```
A convenience base class for defining empty expansions, i.e. that do not consume any tokens.

Nested Class Summary
- Nested classes/interfaces inherited from interface com.javacc.parser.JavaCCConstants
  JavaCCConstants.LexicalState, JavaCCConstants.TokenType
- Nested classes/interfaces inherited from interface com.javacc.parser.Node
  Node.Visitor
- Nested classes/interfaces inherited from interface freemarker.template.TemplateModel
  freemarker.template.TemplateModel.InvalidExpressionModel, freemarker.template.TemplateModel.JavaNull

Field Summary
- Fields inherited from class com.javacc.core.Expansion
  firstSet
- Fields inherited from class com.javacc.parser.BaseNode
  children, parent
- Fields inherited from interface com.javacc.parser.JavaCCConstants
  BUF_SIZE
- Fields inherited from interface freemarker.template.TemplateModel
  INVALID_EXPRESSION, JAVA_NULL, NOTHING
- Fields inherited from interface freemarker.template.TemplateScalarModel
  EMPTY_STRING

Constructor Summary

Constructors
Constructor Description

EmptyExpansion()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`TokenSet`	`getFinalSet()`
`TokenSet`	`getFirstSet()`
`int`	`getMaximumSize()`
`int`	`getMinimumSize()`
`boolean`	`getRequiresScanAhead()`
`boolean`	`getSpecifiesLexicalStateSwitch()`
`boolean`	`isPossiblyEmpty()`

Methods inherited from class com.javacc.core.Expansion
beginsSequence, getContainingProduction, getCustomErrorRecoveryBlock, getFinalSetSize, getFinalSetVarName, getFirstSetVarName, getFollowingExpansion, getFollowSet, getFollowSetVarName, getHasExplicitLookahead, getHasExplicitNumericalLookahead, getHasFullFollowSet, getHasGlobalSemanticActions, getHasImplicitSyntacticLookahead, getHasInnerScanLimit, getHasLookBehind, getHasScanLimit, getHasSemanticLookahead, getHasSeparateSyntacticLookahead, getHasTokenActivation, getIndex, getIsRegexp, getLabel, getLookahead, getLookaheadAmount, getLookaheadExpansion, getLookBehind, getNestedExpansion, getNonSuperfluousParent, getPredicateMethodName, getRecoverMethodName, getRecoverToMethodName, getRequiresPredicateMethod, getRequiresRecoverMethod, getScanLimitPlus, getScanRoutineName, getSemanticLookahead, getSpecifiedLexicalState, getTokenActivation, getTreeNodeBehavior, getUpToExpansion, isAlwaysSuccessful, isAtChoicePoint, isBeforeLexicalStateSwitch, isInsideLookahead, isNegated, isScanLimit, isSingleToken, isTolerantParsing, setCustomErrorRecoveryBlock, setLabel, setScanLimit, setScanLimitPlus, setTolerantParsing, setTreeNodeBehavior, superfluousParentheses, toString

Methods inherited from class com.javacc.parser.BaseNode
addChild, addChild, children, clearChildren, get, getAsString, getBeginOffset, getChild, getChildCount, getChildNodes, getEndOffset, getGrammar, getInnerText, getLiteralText, getNodeName, getNodeNamespace, getNodeType, getParent, getParentNode, getSimpleName, getTokenSource, hasKeyWord, isEmpty, isUnparsed, prepend, removeChild, setBeginOffset, setChild, setEndOffset, setGrammar, setListClass, setParent, setTokenSource, setUnparsed

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

Methods inherited from interface com.javacc.parser.Node
appendChild, children, childrenOfType, close, compareTo, copyLocationInfo, copyLocationInfo, descendants, descendants, descendants, descendants, descendantsOfType, dump, dump, firstAncestorOfType, firstChildOfType, firstChildOfType, firstChildOfType, firstDescendantOfType, firstDescendantOfType, getAllTokens, getBeginColumn, getBeginLine, getEndColumn, getEndLine, getFirstChild, getFirstToken, getInputSource, getLastChild, getLastToken, getLocation, getRealTokens, getRoot, getSource, getTokenType, hasChildNodes, indexOf, iterator, nextSibling, open, prependChild, previousSibling, removeChild, replace, replaceChild

- Constructor Detail
  - EmptyExpansion
```
public EmptyExpansion()
```
- Method Detail
  - getRequiresScanAhead
```
public boolean getRequiresScanAhead()
```
    Overrides:
    
    getRequiresScanAhead in class Expansion
  - isPossiblyEmpty
```
public boolean isPossiblyEmpty()
```
    Specified by:
    
    isPossiblyEmpty in class Expansion
    
    Returns:
    
    Can this expansion be matched by the empty string.
  - getFirstSet
```
public TokenSet getFirstSet()
```
    Specified by:
    
    getFirstSet in class Expansion
  - getFinalSet
```
public TokenSet getFinalSet()
```
    Specified by:
    
    getFinalSet in class Expansion
  - getMinimumSize
```
public int getMinimumSize()
```
    Specified by:
    
    getMinimumSize in class Expansion
    
    Returns:
    
    the minimum number of tokens that this expansion consumes.
  - getMaximumSize
```
public int getMaximumSize()
```
    Specified by:
    
    getMaximumSize in class Expansion
    
    Returns:
    
    the maximum number of tokens that this expansion consumes.
  - getSpecifiesLexicalStateSwitch
```
public boolean getSpecifiesLexicalStateSwitch()
```
    Overrides:
    
    getSpecifiesLexicalStateSwitch in class Expansion