2 ly-smobs.icc -- implement smob glue.
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
16 #define IMPLEMENT_UNSMOB(CL, name) \
18 unsmob_ ## name ( SCM s) \
20 return CL::unsmob (s); \
23 #define IMPLEMENT_TYPE_P(CL, FUNCNAME)\
24 void init_type_p_ ## CL ()\
26 scm_c_define_gsubr (FUNCNAME, 1, 0, 0, (Scheme_function_unknown) CL::smob_p);\
28 ADD_SCM_INIT_FUNC (init_type_p_ ## CL, init_type_p_ ## CL)
31 #define SCM_CELL_TYPE(X) SCM_CAR (X)
34 #ifndef SCM_CELL_WORD_1
35 #define SCM_CELL_WORD_1(X) SCM_CDR (X)
39 #define IMPLEMENT_SIMPLE_SMOBS(CL) \
40 scm_t_bits CL::smob_tag_; \
44 if (SCM_NIMP (s) && SCM_CELL_TYPE (s) == smob_tag_) \
53 smob_tag_ = scm_make_smob_type (#CL, 0); \
54 scm_set_smob_mark (smob_tag_, CL::mark_smob); \
55 scm_set_smob_free (smob_tag_, CL::free_smob); \
56 scm_set_smob_print (smob_tag_, CL::print_smob); \
57 scm_set_smob_equalp (smob_tag_, CL::equal_p); \
59 SCM CL::smobbed_self () const \
62 s = gh_cons (SCM_PACK (CL::smob_tag_), SCM_PACK (this)); \
63 scm_done_malloc (sizeof (CL)); \
70 if (SCM_NIMP (s) && SCM_CELL_TYPE (s) == smob_tag_) \
71 return (CL*) SCM_CELL_WORD_1 (s); \
76 CL::free_smob (SCM ses) \
78 CL * s = (CL*) SCM_CDR (ses); \
82 ADD_SCM_INIT_FUNC (CL, CL::init_smobs)
84 #define IMPLEMENT_SMOBS(CL) \
85 IMPLEMENT_SIMPLE_SMOBS (CL) \
89 SCM s = unprotected_smobify_self ();\
90 scm_gc_protect_object (s);\
94 CL::unprotected_smobify_self () \
97 This is local. We don't assign to self_scm_ directly, to assure \
98 that S isn't GC-ed from under us. \
100 We don't use smobbed_self () to ensure that mark_smob () doesn't have to \
101 deal half-initialized objects: scm_done_malloc ( ) might trigger GC. \
102 the warning in smobs.hh is just to be doubleplus goodly sure \
106 SCM_SETCAR (s,CL::smob_tag_); \
107 SCM_SETCDR (s, SCM_PACK (this)); \
109 scm_done_malloc (sizeof (CL)); \
113 #define IMPLEMENT_DEFAULT_EQUAL_P(CL) \
115 CL::equal_p (SCM a , SCM b) \
117 return a == b ? SCM_BOOL_T : SCM_BOOL_F; \
121 #endif /* LY_SMOBS_ICC */