public class ChoiceState extends ExpressionWithChildState
Modifier and Type | Field and Description |
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protected boolean |
allowEmptyChoice |
exp
Constructor and Description |
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ChoiceState() |
ChoiceState(boolean allowEmptyChoice) |
Modifier and Type | Method and Description |
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protected Expression |
castExpression(Expression exp,
Expression child)
combines half-made expression and newly found child expression into the expression.
|
protected Expression |
initialExpression()
sets initial pattern
|
annealExpression, createChildState, defaultExpression, makeExpression, onEndChild, startSelf
endSelf
endDocument, endElement, isGrammarElement, startElement
_assert, callInterceptExpression, characters, endPrefixMapping, getBaseURI, getLocation, getParentState, getStartTag, ignorableWhitespace, init, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping
public ChoiceState()
public ChoiceState(boolean allowEmptyChoice)
protected Expression initialExpression()
ExpressionWithChildState
initialExpression
in class ExpressionWithChildState
protected Expression castExpression(Expression exp, Expression child)
ExpressionWithChildState
Say this container has three child expression exp1,exp2, and exp3. Then, the expression of this state will be made by the following method invocations.
annealExpression( castExpression( castExpression( castExpression(null,exp1), exp2), exp3 ) )
castExpression
in class ExpressionWithChildState