C# Class Microsoft.Scripting.Actions.MemberTracker

Represents a logical member of a type. The member could either be real concrete member on a type or an extension member. This seperates the "physical" members that .NET knows exist on types from the members that logically exist on a type. It also provides other abstractions above the level of .NET reflection such as MemberGroups and NamespaceTracker's. It also provides a wrapper around the reflection APIs which cannot be extended from partial trust.

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Public Methods

Method	Description
BindToInstance ( DynamicMetaObject instance ) : MemberTracker	Binds the member tracker to the specified instance rturning a new member tracker if binding is possible. If binding is not possible the existing member tracker will be returned. For example binding to a static field results in returning the original MemberTracker. Binding to an instance field results in a new BoundMemberTracker which will get GetBoundValue/SetBoundValue to pass the instance through.
FromMemberInfo ( MemberInfo member ) : MemberTracker
FromMemberInfo ( MemberInfo member, Type extending ) : MemberTracker
GetBoundError ( ActionBinder binder, DynamicMetaObject instance ) : ErrorInfo	Returns the error associated with accessing this member via a bound instance. A null return value indicates that the default error message should be provided by the caller.
GetError ( ActionBinder binder ) : ErrorInfo	Returns the error associated with getting the value. A null return value indicates that the default error message should be provided by the caller.
GetValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type ) : DynamicMetaObject	Gets the expression that creates the value. Returns null if it's an error to get the value. The caller can then call GetErrorForGet to get the correct error Expression (or null if they should provide a default).
SetValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value ) : DynamicMetaObject	Gets an expression that assigns a value to the left hand side. Returns null if it's an error to assign to. The caller can then call GetErrorForSet to get the correct error Expression (or null if a default error should be provided).
SetValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value, DynamicMetaObject errorSuggestion ) : DynamicMetaObject	Gets an expression that assigns a value to the left hand side. Returns null if it's an error to assign to. The caller can then call GetErrorForSet to get the correct error Expression (or null if a default error should be provided).

Protected Methods

Method	Description
GetBoundValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject instance ) : DynamicMetaObject	Helper for getting values that have been bound. Called from BoundMemberTracker. Custom member trackers can override this to provide their own behaviors when bound to an instance.
SetBoundValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value, DynamicMetaObject instance ) : DynamicMetaObject	Helper for setting values that have been bound. Called from BoundMemberTracker. Custom member trackers can override this to provide their own behaviors when bound to an instance.
SetBoundValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value, DynamicMetaObject instance, DynamicMetaObject errorSuggestion ) : DynamicMetaObject	Helper for setting values that have been bound. Called from BoundMemberTracker. Custom member trackers can override this to provide their own behaviors when bound to an instance.

Private Methods

Method	Description
Call ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder ) : DynamicMetaObject
MemberTracker ( ) : System

Method Details

BindToInstance() public method

Binds the member tracker to the specified instance rturning a new member tracker if binding is possible. If binding is not possible the existing member tracker will be returned. For example binding to a static field results in returning the original MemberTracker. Binding to an instance field results in a new BoundMemberTracker which will get GetBoundValue/SetBoundValue to pass the instance through.

public BindToInstance ( DynamicMetaObject instance ) : MemberTracker
instance	System.Dynamic.DynamicMetaObject
return	MemberTracker

FromMemberInfo() public static method

public static FromMemberInfo ( MemberInfo member ) : MemberTracker
member	System.Reflection.MemberInfo
return	MemberTracker

FromMemberInfo() public static method

public static FromMemberInfo ( MemberInfo member, Type extending ) : MemberTracker
member	System.Reflection.MemberInfo
extending	System.Type
return	MemberTracker

GetBoundError() public method

Returns the error associated with accessing this member via a bound instance. A null return value indicates that the default error message should be provided by the caller.

public GetBoundError ( ActionBinder binder, DynamicMetaObject instance ) : ErrorInfo
binder	ActionBinder
instance	System.Dynamic.DynamicMetaObject
return	ErrorInfo

GetBoundValue() protected method

Helper for getting values that have been bound. Called from BoundMemberTracker. Custom member trackers can override this to provide their own behaviors when bound to an instance.

protected GetBoundValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject instance ) : DynamicMetaObject
resolverFactory	Microsoft.Scripting.Actions.Calls.OverloadResolverFactory
binder	ActionBinder
type	System.Type
instance	System.Dynamic.DynamicMetaObject
return	System.Dynamic.DynamicMetaObject

GetError() public method

Returns the error associated with getting the value. A null return value indicates that the default error message should be provided by the caller.

public GetError ( ActionBinder binder ) : ErrorInfo
binder	ActionBinder
return	ErrorInfo

GetValue() public method

Gets the expression that creates the value. Returns null if it's an error to get the value. The caller can then call GetErrorForGet to get the correct error Expression (or null if they should provide a default).

public GetValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type ) : DynamicMetaObject
resolverFactory	Microsoft.Scripting.Actions.Calls.OverloadResolverFactory
binder	ActionBinder
type	System.Type
return	System.Dynamic.DynamicMetaObject

SetBoundValue() protected method

Helper for setting values that have been bound. Called from BoundMemberTracker. Custom member trackers can override this to provide their own behaviors when bound to an instance.

protected SetBoundValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value, DynamicMetaObject instance ) : DynamicMetaObject
resolverFactory	Microsoft.Scripting.Actions.Calls.OverloadResolverFactory
binder	ActionBinder
type	System.Type
value	System.Dynamic.DynamicMetaObject
instance	System.Dynamic.DynamicMetaObject
return	System.Dynamic.DynamicMetaObject

SetBoundValue() protected method

Helper for setting values that have been bound. Called from BoundMemberTracker. Custom member trackers can override this to provide their own behaviors when bound to an instance.

protected SetBoundValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value, DynamicMetaObject instance, DynamicMetaObject errorSuggestion ) : DynamicMetaObject
resolverFactory	Microsoft.Scripting.Actions.Calls.OverloadResolverFactory
binder	ActionBinder
type	System.Type
value	System.Dynamic.DynamicMetaObject
instance	System.Dynamic.DynamicMetaObject
errorSuggestion	System.Dynamic.DynamicMetaObject
return	System.Dynamic.DynamicMetaObject

SetValue() public method

Gets an expression that assigns a value to the left hand side. Returns null if it's an error to assign to. The caller can then call GetErrorForSet to get the correct error Expression (or null if a default error should be provided).

public SetValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value ) : DynamicMetaObject
resolverFactory	Microsoft.Scripting.Actions.Calls.OverloadResolverFactory
binder	ActionBinder
type	System.Type
value	System.Dynamic.DynamicMetaObject
return	System.Dynamic.DynamicMetaObject

SetValue() public method

public SetValue ( Microsoft.Scripting.Actions.Calls.OverloadResolverFactory resolverFactory, ActionBinder binder, Type type, DynamicMetaObject value, DynamicMetaObject errorSuggestion ) : DynamicMetaObject
resolverFactory	Microsoft.Scripting.Actions.Calls.OverloadResolverFactory
binder	ActionBinder
type	System.Type
value	System.Dynamic.DynamicMetaObject
errorSuggestion	System.Dynamic.DynamicMetaObject
return	System.Dynamic.DynamicMetaObject