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.StandardFactory interface that captures the set of standard messages each language should implement.

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