Class ExpressionVisitor<TExpression>

Base class for expression visitors that rewrite an expression tree into a target type.

Inheritance

System.Object

ExpressionVisitor<TExpression>

ExpressionVisitor<TExpression, TLambdaExpression, TParameterExpression, TNewExpression, TElementInit, TMemberBinding, TMemberAssignment, TMemberListBinding, TMemberMemberBinding, TCatchBlock, TSwitchCase, TLabelTarget>

PartialExpressionVisitor<TExpression>

Namespace: System.Linq.CompilerServices

Assembly: Nuqleon.Linq.CompilerServices.dll

Syntax

public abstract class ExpressionVisitor<TExpression> : Object

Type Parameters

Name	Description
TExpression	Target type for expressions.

Constructors

ExpressionVisitor()

Declaration

protected ExpressionVisitor()

Methods

Visit(Expression)

Visits the specified expression and rewrites it to the target expression type.

Declaration

public virtual TExpression Visit(Expression node)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

Visit<T>(ReadOnlyCollection<T>)

Visits the collection of expression nodes and rewrites them to the target expression type.

Declaration

protected ReadOnlyCollection<TExpression> Visit<T>(ReadOnlyCollection<T> nodes)
    where T : Expression

Parameters

Type	Name	Description
System.Collections.ObjectModel.ReadOnlyCollection<T>	nodes	Expression nodes to rewrite.

Returns

Type	Description
System.Collections.ObjectModel.ReadOnlyCollection<TExpression>	Collection of rewritten expression nodes.

Type Parameters

Name	Description
T	Type of the expressions to rewrite. This type should derive from Expression.

VisitAndConvert<TStronglyTypedResult>(Expression)

Visits the specified expression and rewrites it to the specified target expression type.

Declaration

protected TStronglyTypedResult VisitAndConvert<TStronglyTypedResult>(Expression node)
    where TStronglyTypedResult : TExpression

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	node	Expression to visit.

Returns

Type	Description
TStronglyTypedResult	Result of visiting the expression.

Type Parameters

Name	Description
TStronglyTypedResult	Type of the result of the rewrite. This type should derive from TExpression.

VisitAndConvert<T, TStronglyTypedResult>(ReadOnlyCollection<T>)

Visits the collection of expression nodes and rewrites them to the specified target expression type.

Declaration

protected ReadOnlyCollection<TStronglyTypedResult> VisitAndConvert<T, TStronglyTypedResult>(ReadOnlyCollection<T> nodes)
    where T : Expression where TStronglyTypedResult : TExpression

Parameters

Type	Name	Description
System.Collections.ObjectModel.ReadOnlyCollection<T>	nodes	Expression nodes to rewrite.

Returns

Type	Description
System.Collections.ObjectModel.ReadOnlyCollection<TStronglyTypedResult>	Collection of rewritten expression nodes.

Type Parameters

Name	Description
T	Type of the expressions to rewrite. This type should derive from Expression.
TStronglyTypedResult	Type of the results of the rewrite. This type should derive from TExpression.

VisitBinary(BinaryExpression)

Visits the children of the BinaryExpression.

Declaration

protected abstract TExpression VisitBinary(BinaryExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.BinaryExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitBlock(BlockExpression)

Visits the children of the BlockExpression.

Declaration

protected abstract TExpression VisitBlock(BlockExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.BlockExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitConditional(ConditionalExpression)

Visits the children of the ConditionalExpression.

Declaration

protected abstract TExpression VisitConditional(ConditionalExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.ConditionalExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitConstant(ConstantExpression)

Visits the children of the ConstantExpression.

Declaration

protected abstract TExpression VisitConstant(ConstantExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.ConstantExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitDebugInfo(DebugInfoExpression)

Visits the children of the DebugInfoExpression.

Declaration

protected abstract TExpression VisitDebugInfo(DebugInfoExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.DebugInfoExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitDefault(DefaultExpression)

Visits the children of the DefaultExpression.

Declaration

protected abstract TExpression VisitDefault(DefaultExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.DefaultExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitDynamic(DynamicExpression)

Visits the children of the DynamicExpression.

Declaration

protected abstract TExpression VisitDynamic(DynamicExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.DynamicExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitExtension(Expression)

Visits the children of the extension expression node.

Declaration

protected abstract TExpression VisitExtension(Expression node)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitGoto(GotoExpression)

Visits the children of the GotoExpression.

Declaration

protected abstract TExpression VisitGoto(GotoExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.GotoExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitIfNotNull<T, TResult>(T, Func<T, TResult>)

Visits the specified node using the specified visitor function if it's not null.

Declaration

protected static TResult VisitIfNotNull<T, TResult>(T node, Func<T, TResult> nodeVisitor)

Parameters

Type	Name	Description
T	node	Node to visit.
System.Func<T, TResult>	nodeVisitor	Visitor function to apply to the node.

Returns

Type	Description
TResult	Result of applying the visitor function to the node.

Type Parameters

Name	Description
T	Type of the node to visit.
TResult	Type of the result of visiting the node.

VisitIndex(IndexExpression)

Visits the children of the IndexExpression.

Declaration

protected abstract TExpression VisitIndex(IndexExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.IndexExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitInvocation(InvocationExpression)

Visits the children of the InvocationExpression.

Declaration

protected abstract TExpression VisitInvocation(InvocationExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.InvocationExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitLabel(LabelExpression)

Visits the children of the LabelExpression.

Declaration

protected abstract TExpression VisitLabel(LabelExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.LabelExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitLambda<T>(Expression<T>)

Visits the children of the LambdaExpression.

Declaration

protected abstract TExpression VisitLambda<T>(Expression<T> node)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression<T>	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

Type Parameters

Name	Description
T	The type of the delegate.

VisitListInit(ListInitExpression)

Visits the children of the ListInitExpression.

Declaration

protected abstract TExpression VisitListInit(ListInitExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.ListInitExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitLoop(LoopExpression)

Visits the children of the LoopExpression.

Declaration

protected abstract TExpression VisitLoop(LoopExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.LoopExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitMember(MemberExpression)

Visits the children of the MemberExpression.

Declaration

protected abstract TExpression VisitMember(MemberExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.MemberExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitMemberInit(MemberInitExpression)

Visits the children of the MemberInitExpression.

Declaration

protected abstract TExpression VisitMemberInit(MemberInitExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.MemberInitExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitMethodCall(MethodCallExpression)

Visits the children of the MethodCallExpression.

Declaration

protected abstract TExpression VisitMethodCall(MethodCallExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.MethodCallExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitNew(NewExpression)

Visits the children of the NewExpression.

Declaration

protected abstract TExpression VisitNew(NewExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.NewExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitNewArray(NewArrayExpression)

Visits the children of the NewArrayExpression.

Declaration

protected abstract TExpression VisitNewArray(NewArrayExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.NewArrayExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitParameter(ParameterExpression)

Visits the children of the ParameterExpression.

Declaration

protected abstract TExpression VisitParameter(ParameterExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.ParameterExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitRuntimeVariables(RuntimeVariablesExpression)

Visits the children of the RuntimeVariablesExpression.

Declaration

protected abstract TExpression VisitRuntimeVariables(RuntimeVariablesExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.RuntimeVariablesExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitSwitch(SwitchExpression)

Visits the children of the SwitchExpression.

Declaration

protected abstract TExpression VisitSwitch(SwitchExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.SwitchExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitTry(TryExpression)

Visits the children of the TryExpression.

Declaration

protected abstract TExpression VisitTry(TryExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.TryExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitTypeBinary(TypeBinaryExpression)

Visits the children of the TypeBinaryExpression.

Declaration

protected abstract TExpression VisitTypeBinary(TypeBinaryExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.TypeBinaryExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.

VisitUnary(UnaryExpression)

Visits the children of the UnaryExpression.

Declaration

protected abstract TExpression VisitUnary(UnaryExpression node)

Parameters

Type	Name	Description
System.Linq.Expressions.UnaryExpression	node	Expression to visit.

Returns

Type	Description
TExpression	Result of visiting the expression.