-! Copyright (C) 2004, 2009 Slava Pestov.
+! Copyright (C) 2004, 2010 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
-USING: kernel io effects namespaces sequences quotations vocabs
-vocabs.loader generic words stack-checker.backend stack-checker.state
+USING: accessors kernel io effects namespaces sequences
+quotations vocabs vocabs.loader generic words
+stack-checker.backend stack-checker.state
stack-checker.known-words stack-checker.transforms
stack-checker.errors stack-checker.inlining
stack-checker.visitor.dummy ;
IN: stack-checker
-GENERIC: infer ( quot -- effect )
-
-M: callable infer ( quot -- effect )
- [ infer-quot-here ] with-infer drop ;
+: infer ( quot -- effect )
+ dup callable?
+ [ [ infer-quot-here ] with-infer drop ]
+ [ drop ( -- x ) ] if ;
: infer. ( quot -- )
- #! Safe to call from inference transforms.
+ ! Safe to call from inference transforms.
infer effect>string print ;
+
+M: callable stack-effect infer ;