From e86e90cc031a0670fdb0d9c23e23f90b009ba3da Mon Sep 17 00:00:00 2001 From: Justus Winter Date: Thu, 31 Mar 2016 13:49:56 +0200 Subject: tests/gpgscm: Foreign objects support for TinySCHEME. * tests/gpgscm/scheme-private.h (struct cell): Add 'foreign_object'. (is_foreign_object): New prototype. (get_foreign_object_{vtable,data}): Likewise. * tests/gpgscm/scheme.c (enum scheme_types): New type. (is_foreign_object): New function. (get_foreign_object_{vtable,data}): Likewise. (mk_foreign_object): Likewise. (finalize_cell): Free foreign objects. (atom2str): Pretty-print foreign objects. (vtbl): Add new functions. * tests/gpgscm/scheme.h (struct foreign_object_vtable): New type. (mk_foreign_object): New prototype. (struct scheme_interface): Add new functions. Patch from Thomas Munro, https://sourceforge.net/p/tinyscheme/patches/13/ Signed-off-by: Justus Winter --- tests/gpgscm/scheme.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'tests/gpgscm/scheme.h') diff --git a/tests/gpgscm/scheme.h b/tests/gpgscm/scheme.h index 4ba2daa76..f4231c474 100644 --- a/tests/gpgscm/scheme.h +++ b/tests/gpgscm/scheme.h @@ -118,6 +118,12 @@ typedef struct cell *pointer; typedef void * (*func_alloc)(size_t); typedef void (*func_dealloc)(void *); +/* table of functions required for foreign objects */ +typedef struct foreign_object_vtable { + void (*finalize)(scheme *sc, void *data); + void (*to_string)(scheme *sc, char *out, size_t size, void *data); +} foreign_object_vtable; + /* num, for generic arithmetic */ typedef struct num { char is_fixnum; @@ -157,6 +163,7 @@ pointer mk_counted_string(scheme *sc, const char *str, int len); pointer mk_empty_string(scheme *sc, int len, char fill); pointer mk_character(scheme *sc, int c); pointer mk_foreign_func(scheme *sc, foreign_func f); +pointer mk_foreign_object(scheme *sc, const foreign_object_vtable *vtable, void *data); void putstr(scheme *sc, const char *s); int list_length(scheme *sc, pointer a); int eqv(pointer a, pointer b); @@ -177,6 +184,9 @@ struct scheme_interface { pointer (*mk_character)(scheme *sc, int c); pointer (*mk_vector)(scheme *sc, int len); pointer (*mk_foreign_func)(scheme *sc, foreign_func f); + pointer (*mk_foreign_object)(scheme *sc, const foreign_object_vtable *vtable, void *data); + const foreign_object_vtable *(*get_foreign_object_vtable)(pointer p); + void *(*get_foreign_object_data)(pointer p); void (*putstr)(scheme *sc, const char *s); void (*putcharacter)(scheme *sc, int c); -- cgit v1.2.3