com.sun.msv.verifier.regexp
Class AttributePicker

java.lang.Object
  |
  +--com.sun.msv.verifier.regexp.AttributePicker

All Implemented Interfaces:

ExpressionVisitorExpression

public class AttributePicker

extends Object

implements ExpressionVisitorExpression

removes all unnecessary expressions and creates an expression that consists of required attributes and choices only.

For example, <choice> <element /> <attribute /> </choice> will be converted to <empty /> because no attribute is required. But <choice> <attribute /> <attribute /> </choice> will remain the same because one or the other is required. this method also removes SequenceExp. <sequence> <attribute name="A" /> <attribute name="B" /> </sequence> will be converted to <attribute name="A" /> This function object is used only for error recovery. Resulting expressions always consist only of <choice>s and <attribute>s.

Author:

Kohsuke KAWAGUCHI

Constructor Summary

AttributePicker(ExpressionPool pool)

Method Summary

Expression	onAnyString()
Expression	onAttribute(AttributeExp exp)
Expression	onChoice(ChoiceExp exp)
Expression	onConcur(ConcurExp exp)
Expression	onElement(ElementExp exp)
Expression	onEpsilon()
Expression	onInterleave(InterleaveExp exp)
Expression	onKey(KeyExp exp)
Expression	onList(ListExp exp)
Expression	onMixed(MixedExp exp)
Expression	onNullSet()
Expression	onOneOrMore(OneOrMoreExp exp)
Expression	onOther(OtherExp exp)
Expression	onRef(ReferenceExp exp)
Expression	onSequence(SequenceExp exp)
Expression	onTypedString(TypedStringExp exp)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AttributePicker

public AttributePicker(ExpressionPool pool)

Method Detail

onElement

public Expression onElement(ElementExp exp)

Specified by:

onElement in interface ExpressionVisitorExpression

onMixed

public Expression onMixed(MixedExp exp)

Specified by:

onMixed in interface ExpressionVisitorExpression

onAnyString

public Expression onAnyString()

Specified by:

onAnyString in interface ExpressionVisitorExpression

onEpsilon

public Expression onEpsilon()

Specified by:

onEpsilon in interface ExpressionVisitorExpression

onNullSet

public Expression onNullSet()

Specified by:

onNullSet in interface ExpressionVisitorExpression

onRef

public Expression onRef(ReferenceExp exp)

Specified by:

onRef in interface ExpressionVisitorExpression

onOther

public Expression onOther(OtherExp exp)

Specified by:

onOther in interface ExpressionVisitorExpression

onTypedString

public Expression onTypedString(TypedStringExp exp)

Specified by:

onTypedString in interface ExpressionVisitorExpression

onList

public Expression onList(ListExp exp)

Specified by:

onList in interface ExpressionVisitorExpression

onKey

public Expression onKey(KeyExp exp)

Specified by:

onKey in interface ExpressionVisitorExpression

onAttribute

public Expression onAttribute(AttributeExp exp)

Specified by:

onAttribute in interface ExpressionVisitorExpression

onOneOrMore

public Expression onOneOrMore(OneOrMoreExp exp)

Specified by:

onOneOrMore in interface ExpressionVisitorExpression

onSequence

public Expression onSequence(SequenceExp exp)

Specified by:

onSequence in interface ExpressionVisitorExpression

onInterleave

public Expression onInterleave(InterleaveExp exp)

Specified by:

onInterleave in interface ExpressionVisitorExpression

onConcur

public Expression onConcur(ConcurExp exp)

Specified by:

onConcur in interface ExpressionVisitorExpression

onChoice

public Expression onChoice(ChoiceExp exp)

Specified by:

onChoice in interface ExpressionVisitorExpression