-! Copyright (C) 2008, 2009 Slava Pestov.
+! Copyright (C) 2008, 2010 Slava Pestov, Doug Coleman.
! See http://factorcode.org/license.txt for BSD license.
-USING: alien alien.c-types arrays assocs effects grouping kernel
-parser sequences splitting words fry locals lexer namespaces ;
+USING: accessors alien alien.c-types alien.parser
+alien.libraries arrays assocs classes combinators
+combinators.short-circuit compiler.units effects grouping
+kernel parser sequences splitting words fry locals lexer
+namespaces summary math vocabs.parser ;
IN: alien.parser
+: parse-c-type-name ( name -- word )
+ dup search [ ] [ no-word ] ?if ;
+
+: parse-array-type ( name -- dims c-type )
+ "[" split unclip
+ [ [ "]" ?tail drop parse-word ] map ] dip ;
+
+: (parse-c-type) ( string -- type )
+ {
+ { [ dup "void" = ] [ drop void ] }
+ { [ CHAR: ] over member? ] [ parse-array-type parse-c-type-name prefix ] }
+ { [ dup search ] [ parse-c-type-name ] }
+ { [ "**" ?tail ] [ drop void* ] }
+ { [ "*" ?tail ] [ parse-c-type-name resolve-pointer-type ] }
+ [ dup search [ ] [ no-word ] ?if ]
+ } cond ;
+
+: valid-c-type? ( c-type -- ? )
+ { [ array? ] [ c-type-name? ] [ void? ] } 1|| ;
+
+: parse-c-type ( string -- type )
+ (parse-c-type) dup valid-c-type? [ no-c-type ] unless ;
+
+: scan-c-type ( -- c-type )
+ scan dup "{" =
+ [ drop \ } parse-until >array ]
+ [ parse-c-type ] if ;
+
+: reset-c-type ( word -- )
+ dup "struct-size" word-prop
+ [ dup [ forget-class ] [ { "struct-size" } reset-props ] bi ] when
+ {
+ "c-type"
+ "pointer-c-type"
+ "callback-effect"
+ "callback-library"
+ } reset-props ;
+
+: CREATE-C-TYPE ( -- word )
+ scan current-vocab create {
+ [ fake-definition ]
+ [ set-word ]
+ [ reset-c-type ]
+ [ ]
+ } cleave ;
+
+: normalize-c-arg ( type name -- type' name' )
+ [ length ]
+ [
+ [ CHAR: * = ] trim-head
+ [ length - CHAR: * <array> append ] keep
+ ] bi
+ [ parse-c-type ] dip ;
+
: parse-arglist ( parameters return -- types effect )
- [ 2 group unzip [ "," ?tail drop ] map ]
- [ [ { } ] [ 1array ] if-void ]
+ [
+ 2 group [ first2 normalize-c-arg 2array ] map
+ unzip [ "," ?tail drop ] map
+ ]
+ [ [ { } ] [ name>> 1array ] if-void ]
bi* <effect> ;
: function-quot ( return library function types -- quot )
'[ _ _ _ _ alien-invoke ] ;
:: make-function ( return library function parameters -- word quot effect )
+ return function normalize-c-arg :> ( return function )
function create-in dup reset-generic
return library function
parameters return parse-arglist [ function-quot ] dip ;
+: parse-arg-tokens ( -- tokens )
+ ";" parse-tokens [ "()" subseq? not ] filter ;
+
: (FUNCTION:) ( -- word quot effect )
- scan "c-library" get scan ";" parse-tokens
- [ "()" subseq? not ] filter
- make-function ;
+ scan "c-library" get scan parse-arg-tokens make-function ;
: define-function ( return library function parameters -- )
make-function define-declared ;
+
+: callback-quot ( return types abi -- quot )
+ '[ [ _ _ _ ] dip alien-callback ] ;
+
+:: make-callback-type ( lib return type-name parameters -- word quot effect )
+ return type-name normalize-c-arg :> ( return-c-type type-name )
+ type-name current-vocab create :> type-word
+ type-word [ reset-generic ] [ reset-c-type ] bi
+ void* type-word typedef
+ parameters return parse-arglist :> ( types callback-effect )
+ type-word callback-effect "callback-effect" set-word-prop
+ type-word lib "callback-library" set-word-prop
+ type-word return-c-type types lib library-abi callback-quot (( quot -- alien )) ;
+
+: (CALLBACK:) ( -- word quot effect )
+ "c-library" get
+ scan scan parse-arg-tokens make-callback-type ;
+
+PREDICATE: alien-function-word < word
+ def>> {
+ [ length 5 = ]
+ [ last \ alien-invoke eq? ]
+ } 1&& ;
+
+PREDICATE: alien-callback-type-word < typedef-word
+ "callback-effect" word-prop ;