com.oracle.truffle.api.interop

Interface ForeignAccess.Factory

Enclosing class:

ForeignAccess

public static interface ForeignAccess.Factory

Interface of a factory that produces AST snippets that can access a foreign TruffleObject. A Truffle language implementation accesses a TruffleObject via a Message. The TruffleObject instance provides a ForeignAccess instance (built via ForeignAccess.create(com.oracle.truffle.api.interop.ForeignAccess.Factory)) that provides an AST snippet for a given Message. Rather than using this generic Factory, consider implementing ForeignAccess.Factory18 interface that captures the set of messages each language should implement as of Truffle version 0.18.

Since:

0.8 or earlier

Method Summary

Modifier and Type	Method and Description
CallTarget	accessMessage(Message tree) Provides an AST snippet to access a TruffleObject.
boolean	canHandle(TruffleObject obj) * Checks whether provided TruffleObject can be accessed using AST snippets produced by this ForeignAccess.Factory.

Method Detail

canHandle

boolean canHandle(TruffleObject obj)

* Checks whether provided TruffleObject can be accessed using AST snippets produced by this ForeignAccess.Factory.

Parameters:

obj - the object to check

Returns:

true, if the object can be processed

Since:

0.8 or earlier

accessMessage

CallTarget accessMessage(Message tree)

Provides an AST snippet to access a TruffleObject.

Parameters:

tree - the Message that represents the access to a TruffleObject.

Returns:

the AST snippet for accessing the TruffleObject, wrapped as a CallTarget.

Since:

0.8 or earlier