Package com.javacc.core

Class 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

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 Details

EmptyExpansion

public EmptyExpansion()

Method Details

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