Class ReactiveExpressionServices

Provides a set of services for expression tree manipulation in reactive processing implementations.

Inheritance

System.Object

ReactiveExpressionServices

Implements

IReactiveExpressionServices

Namespace: Reaqtor

Assembly: Reaqtor.Shared.Core.dll

Syntax

public class ReactiveExpressionServices : Object, IReactiveExpressionServices

Constructors

ReactiveExpressionServices(Type)

Creates a new expression service provider instance.

Declaration

public ReactiveExpressionServices(Type reactiveClientInterfaceType)

Parameters

Type	Name	Description
System.Type	reactiveClientInterfaceType	Interface type of the IReactiveClient variant used to obtain reactive resources.

Methods

Funcletize(Expression)

Locally evaluates any unsupported constructs in the expression (such as closures, disallowed methods, etc.) by turning them into funclet expressions. This rewrite gets called prior to further rewrite stages that normalize the expression tree.

Declaration

protected virtual Expression Funcletize(Expression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	expression	Expression tree to scan for constructs that need to be funcletized.

Returns

Type	Description
System.Linq.Expressions.Expression	Expression with unsupported constructs rewritten into funclets.

GetKnownResourceInvocation(Uri, MemberInfo, Expression, IEnumerable<Expression>, Type)

Gets an expression representing the invocation of a known resource.

Declaration

protected virtual Expression GetKnownResourceInvocation(Uri knownResourceUri, MemberInfo member, Expression instance, IEnumerable<Expression> arguments, Type returnType)

Parameters

Type	Name	Description
System.Uri	knownResourceUri	URI of the known resource.
System.Reflection.MemberInfo	member	Member annotated with the KnownResource attribute, targeted by this rewrite.
System.Linq.Expressions.Expression	instance	Instance to invoke the member on (if any).
System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression>	arguments	Arguments to pass to the member invocation (if any).
System.Type	returnType	Return type of the known resource expression.

Returns

Type	Description
System.Linq.Expressions.Expression	Expression representing the invocation of a known resource.

GetNamedExpression(Type, Uri)

Gets an expression representing a named resource.

Declaration

public virtual Expression GetNamedExpression(Type type, Uri uri)

Parameters

Type	Name	Description
System.Type	type	Type of the resource.
System.Uri	uri	Name of the resource.

Returns

Type	Description
System.Linq.Expressions.Expression	Expression representing the named resource.

Normalize(Expression)

Normalizes the specified expression. This method is typically used to process expressions prior to further processing by a service.

Declaration

public virtual Expression Normalize(Expression expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	expression	Expression to normalize.

Returns

Type	Description
System.Linq.Expressions.Expression	Normalized expression.

RegisterObject(Object, Expression)

Registers an association of an object to its expression representation.

Declaration

public virtual void RegisterObject(object value, Expression expression)

Parameters

Type	Name	Description
System.Object	value	Object to associate with an expression representation.
System.Linq.Expressions.Expression	expression	Expression representation of the object.

TryGetName(Expression, out Uri)

Tries to extract the name of a resource from its expression representation.

Declaration

public virtual bool TryGetName(Expression expression, out Uri uri)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression	expression	Expression to extract a name from.
System.Uri	uri	Name of the resource, if found.

Returns

Type	Description
System.Boolean	true if the expression represents a named resource; otherwise, false.

TryGetObject(Object, out Expression)

Tries to find an association of the specified object to an expression representation.

Declaration

public virtual bool TryGetObject(object value, out Expression expression)

Parameters

Type	Name	Description
System.Object	value	Object to find an associated expression representation for.
System.Linq.Expressions.Expression	expression	Expression representation of the object, if found.

Returns

Type	Description
System.Boolean	true if an association was found; otherwise, false.

Implements

IReactiveExpressionServices