Class Modifier

Since AST Nodes are read-only, modifying an AST means copying (parts) the tree to a new tree with the nodes requiring modification being replaced. This visitor implementation aids building new AST trees by copying from exisiting and replacing modified nodes through delegation to another visitor.

Inheritance

System.Object

Visitor

Modifier

Inherited Members

Visitor.VisitAndConvert<T>(T)

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: TimeCockpit.Data.QueryLanguage.Syntax

Assembly: TimeCockpit.Data.dll

Syntax

public class Modifier : Visitor

Constructors

Modifier(Visitor)

Initializes a new instance of the Modifier class.

Declaration

public Modifier(Visitor replacementVisitor)

Parameters

Type	Name	Description
Visitor	replacementVisitor	The visitor producing replacements.

Methods

VisitAggregationFunctionCall(AggregationFunctionCall)

Visits an AggregationFunctionCall AST node.

Declaration

public override Expression VisitAggregationFunctionCall(AggregationFunctionCall aggregateFunctionCall)

Parameters

Type	Name	Description
AggregationFunctionCall	aggregateFunctionCall	The AggregateFunction call to visit.

Returns

Type	Description
Expression	Returns a new AST Node Expression if modified, or the existing aggregateFunctionCall if no modification occurred.

Overrides

Visitor.VisitAggregationFunctionCall(AggregationFunctionCall)

VisitBackReferenceSource(BackReferenceSource)

Visits a BackReferenceSource AST node.

Declaration

public override QuerySource VisitBackReferenceSource(BackReferenceSource backReferenceSource)

Parameters

Type	Name	Description
BackReferenceSource	backReferenceSource	The back reference source to visit.

Returns

Type	Description
QuerySource	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitBackReferenceSource(BackReferenceSource)

VisitBinaryExpression(BinaryExpression)

Visits a BinaryExpression.

Declaration

public override Expression VisitBinaryExpression(BinaryExpression binaryExpression)

Parameters

Type	Name	Description
BinaryExpression	binaryExpression	The binary expression to visit / modify.

Returns

Type	Description
Expression	Returns a new BinaryExpression or the existing binaryExpression parameter if no modification occurred.

Overrides

Visitor.VisitBinaryExpression(BinaryExpression)

VisitBooleanConstant(BooleanConstant)

Visits a BooleanConstant AST node.

Declaration

public override Expression VisitBooleanConstant(BooleanConstant booleanConstant)

Parameters

Type	Name	Description
BooleanConstant	booleanConstant	The null constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitBooleanConstant(BooleanConstant)

VisitDateConstant(DateConstant)

Visits a DateConstant AST node.

Declaration

public override Expression VisitDateConstant(DateConstant dateConstant)

Parameters

Type	Name	Description
DateConstant	dateConstant	The date constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitDateConstant(DateConstant)

VisitDateTimeConstant(DateTimeConstant)

Visits a DateTimeConstant AST node.

Declaration

public override Expression VisitDateTimeConstant(DateTimeConstant dateTimeConstant)

Parameters

Type	Name	Description
DateTimeConstant	dateTimeConstant	The DateTimeConstant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitDateTimeConstant(DateTimeConstant)

VisitDeadOfSource(DeadOfSource)

Calls the replacement visitor to determine if the dead of source should be replaced.

Declaration

public override QuerySource VisitDeadOfSource(DeadOfSource deadOfSource)

Parameters

Type	Name	Description
DeadOfSource	deadOfSource	The deadOfSource to check.

Returns

Type	Description
QuerySource	Returns the (possibly modified) query source.

Overrides

Visitor.VisitDeadOfSource(DeadOfSource)

VisitDecimalConstant(DecimalConstant)

Visits a DecimalConstant AST node.

Declaration

public override Expression VisitDecimalConstant(DecimalConstant decimalConstant)

Parameters

Type	Name	Description
DecimalConstant	decimalConstant	The decimal constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitDecimalConstant(DecimalConstant)

VisitEntitySource(EntitySource)

Visits a EntitySource AST Node.

Declaration

public override QuerySource VisitEntitySource(EntitySource queryTableSource)

Parameters

Type	Name	Description
EntitySource	queryTableSource	The query table source to visit.

Returns

Type	Description
QuerySource	Returns a new instance of the queryTableSource or queryTableSource itself, if no modification occurred.

Overrides

Visitor.VisitEntitySource(EntitySource)

VisitEntitySourceIncludeConditional(EntitySourceIncludeConditional)

Visits a EntitySourceIncludeConditional AST node.

Declaration

public override EntitySourceInclude VisitEntitySourceIncludeConditional(EntitySourceIncludeConditional includeConditional)

Parameters

Type	Name	Description
EntitySourceIncludeConditional	includeConditional	The conditional include to visit.

Returns

Type	Description
EntitySourceInclude	Returns a new instance of the includeConditional or includeCoditional itself, if no modification occurred.

Overrides

Visitor.VisitEntitySourceIncludeConditional(EntitySourceIncludeConditional)

VisitEntitySourceIncludeRelation(EntitySourceIncludeRelation)

Visits a EntitySourceIncludeRelation AST node.

Declaration

public override EntitySourceInclude VisitEntitySourceIncludeRelation(EntitySourceIncludeRelation includeRelation)

Parameters

Type	Name	Description
EntitySourceIncludeRelation	includeRelation	The AST node to visit.

Returns

Type	Description
EntitySourceInclude	Returns the new / unmodified instance of the EntitySourceIncludeRelation AST node.

Overrides

Visitor.VisitEntitySourceIncludeRelation(EntitySourceIncludeRelation)

VisitExplicitSet(ExplicitSet)

Visits a ExplicitSet AST node.

Declaration

public override Set VisitExplicitSet(ExplicitSet explicitSet)

Parameters

Type	Name	Description
ExplicitSet	explicitSet	The null constant to visit.

Returns

Type	Description
Set	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitExplicitSet(ExplicitSet)

VisitFunctionCall(FunctionCall)

Visits a FunctionCall AST Node.

Declaration

public override Expression VisitFunctionCall(FunctionCall functionCall)

Parameters

Type	Name	Description
FunctionCall	functionCall	The functionCall AST node to visit / possibly modify..

Returns

Type	Description
Expression	Returns a new FunctionCall or the functionCall parameter itself, if no modification occurred.

Overrides

Visitor.VisitFunctionCall(FunctionCall)

VisitGuidConstant(GuidConstant)

Visits a GuidConstant AST node.

Declaration

public override Expression VisitGuidConstant(GuidConstant guidConstant)

Parameters

Type	Name	Description
GuidConstant	guidConstant	The guid constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitGuidConstant(GuidConstant)

VisitHasChangedFunction(HasChangedFunction)

Visits a HasChangedFunction.

Declaration

public override Expression VisitHasChangedFunction(HasChangedFunction hasChangedFunction)

Parameters

Type	Name	Description
HasChangedFunction	hasChangedFunction	The HasChangedFunction to visit.

Returns

Type	Description
Expression	Returns the possibly modified expression.

Overrides

Visitor.VisitHasChangedFunction(HasChangedFunction)

VisitMemberAccess(MemberAccess)

Visits a MemberAccess AST node.

Declaration

public override Expression VisitMemberAccess(MemberAccess memberAccess)

Parameters

Type	Name	Description
MemberAccess	memberAccess	The null constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitMemberAccess(MemberAccess)

VisitMemberDeclarationForwarded(MemberDeclarationForwarded)

Visits the MemberDeclarationForwarded AST node.

Declaration

public override MemberDeclaration VisitMemberDeclarationForwarded(MemberDeclarationForwarded forwarded)

Parameters

Type	Name	Description
MemberDeclarationForwarded	forwarded	The forwarded member declaration to visit / modify.

Returns

Type	Description
MemberDeclaration	Returns a new instance of the MemberDeclarationForwarded AST node or forwarded itself, if no modification occurred.

Overrides

Visitor.VisitMemberDeclarationForwarded(MemberDeclarationForwarded)

VisitMemberDeclarationNamedExpression(MemberDeclarationNamedExpression)

Visits a MemberDeclarationNamedExpression AST node.

Declaration

public override MemberDeclaration VisitMemberDeclarationNamedExpression(MemberDeclarationNamedExpression namedExpression)

Parameters

Type	Name	Description
MemberDeclarationNamedExpression	namedExpression	The named expression to visit / modify.

Returns

Type	Description
MemberDeclaration	Returns a new MemberDeclarationNamedExpression or the namedExpression parameter if no modification occurred.

Overrides

Visitor.VisitMemberDeclarationNamedExpression(MemberDeclarationNamedExpression)

VisitMemberDeclaratorNamedIdentifier(MemberDeclarationNamedIdentifier)

Visits the MemberDeclarationNamedIdentifier AST node.

Declaration

public override MemberDeclaration VisitMemberDeclaratorNamedIdentifier(MemberDeclarationNamedIdentifier namedIdentifier)

Parameters

Type	Name	Description
MemberDeclarationNamedIdentifier	namedIdentifier	The named identifier to visit / modify.

Returns

Type	Description
MemberDeclaration	Returns a the result of the replacementVisitor call to VisitAndConvert<T>(T).

Overrides

Visitor.VisitMemberDeclaratorNamedIdentifier(MemberDeclarationNamedIdentifier)

VisitNamedSetReference(NamedSetReference)

Visits a NamedSetReference AST node.

Declaration

public override Set VisitNamedSetReference(NamedSetReference namedSetReference)

Parameters

Type	Name	Description
NamedSetReference	namedSetReference	The named set reference to visit.

Returns

Type	Description
Set	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitNamedSetReference(NamedSetReference)

VisitNull(NullConstant)

Visits a NullConstant AST node.

Declaration

public override Expression VisitNull(NullConstant nullConstant)

Parameters

Type	Name	Description
NullConstant	nullConstant	The null constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitNull(NullConstant)

VisitOrderBy(OrderBy)

Visits an OrderBy.

Declaration

public override OrderBy VisitOrderBy(OrderBy orderBy)

Parameters

Type	Name	Description
OrderBy	orderBy	The orderBy to modify / visit.

Returns

Type	Description
OrderBy	Returns a new OrderBy if modified, the existing modify otherwise.

Overrides

Visitor.VisitOrderBy(OrderBy)

VisitOrderByExpression(OrderByExpression)

Visits an orderby expression.

Declaration

public override OrderByExpression VisitOrderByExpression(OrderByExpression orderBy)

Parameters

Type	Name	Description
OrderByExpression	orderBy	The orderBy expression to visit / modify.

Returns

Type	Description
OrderByExpression	Returns a new OrderByExpression if it was modified, the existing orderBy AST node is returned otherwise.

Overrides

Visitor.VisitOrderByExpression(OrderByExpression)

VisitParameter(Parameter)

Visits a Parameter AST node.

Declaration

public override Expression VisitParameter(Parameter parameter)

Parameters

Type	Name	Description
Parameter	parameter	The null constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitParameter(Parameter)

VisitQuery(Query)

Visits a query. Calls the replacementVisitor and a modified instance of query if necessary.

Declaration

public override Query VisitQuery(Query query)

Parameters

Type	Name	Description
Query	query	The query to modify.

Returns

Type	Description
Query	Returns a new Query if it has been modified, the existing query otherwise.

Overrides

Visitor.VisitQuery(Query)

VisitQueryOptions(QueryOptions)

visits a QueryOptions AST node.

Declaration

public override QueryOptions VisitQueryOptions(QueryOptions queryOptions)

Parameters

Type	Name	Description
QueryOptions	queryOptions	The QueryOptions object to visit / modify.

Returns

Type	Description
QueryOptions	Returns the value returned by the call to VisitAndConvert<T>(T) on TimeCockpit.Data.QueryLanguage.Syntax.Modifier.replacementVisitor.

Overrides

Visitor.VisitQueryOptions(QueryOptions)

VisitSelectAlias(SelectAlias)

Calls the replacement visitor for the select alias.

Declaration

public override Select VisitSelectAlias(SelectAlias selectAlias)

Parameters

Type	Name	Description
SelectAlias	selectAlias	The select alias to modify.

Returns

Type	Description
Select	Returns a new SelectAlias, if it has been modified, or the passed selectAlias if no modification was performed.

Overrides

Visitor.VisitSelectAlias(SelectAlias)

VisitSelectNewWith(SelectNewWith)

Visits a select New With.

Declaration

public override Select VisitSelectNewWith(SelectNewWith selectNewWith)

Parameters

Type	Name	Description
SelectNewWith	selectNewWith	The select New With to visit.

Returns

Type	Description
Select	Returns a new SelectNewWith or the existing one if it has not been modified.

Overrides

Visitor.VisitSelectNewWith(SelectNewWith)

VisitSkipAndTake(SkipAndTake)

visits a SkipAndTake AST node.

Declaration

public override SkipAndTake VisitSkipAndTake(SkipAndTake skipAndTake)

Parameters

Type	Name	Description
SkipAndTake	skipAndTake	The SkipAndTake node to visit / modify.

Returns

Type	Description
SkipAndTake	Returns the value returned by VisitAndConvert<T>(T) on TimeCockpit.Data.QueryLanguage.Syntax.Modifier.replacementVisitor.

Overrides

Visitor.VisitSkipAndTake(SkipAndTake)

VisitStringConstant(StringConstant)

Visits a StringConstant AST node.

Declaration

public override Expression VisitStringConstant(StringConstant stringConstant)

Parameters

Type	Name	Description
StringConstant	stringConstant	The string constant to visit.

Returns

Type	Description
Expression	Returns the value returned by the replacement visitor.

Overrides

Visitor.VisitStringConstant(StringConstant)