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_TYPE_P(CL, FUNCNAME)\
17 void init_type_p_ ## CL ()\
19 scm_c_define_gsubr (FUNCNAME, 1, 0, 0, (Scheme_function_unknown) CL::smob_p);\
21 ADD_SCM_INIT_FUNC (init_type_p_ ## CL, init_type_p_ ## CL)
24 #define SCM_CELL_TYPE(X) SCM_CAR (X)
27 #ifndef SCM_CELL_WORD_1
28 #define SCM_CELL_WORD_1(X) SCM_CDR (X)
32 #define IMPLEMENT_SIMPLE_SMOBS(CL) \
33 scm_t_bits CL::smob_tag_; \
37 if (SCM_NIMP (s) && SCM_CELL_TYPE (s) == smob_tag_) \
46 smob_tag_ = scm_make_smob_type (#CL, 0); \
47 scm_set_smob_mark (smob_tag_, CL::mark_smob); \
48 scm_set_smob_free (smob_tag_, CL::free_smob); \
49 scm_set_smob_print (smob_tag_, CL::print_smob); \
50 scm_set_smob_equalp (smob_tag_, CL::equal_p); \
52 SCM CL::smobbed_self () const \
55 s = gh_cons (SCM_PACK (CL::smob_tag_), SCM_PACK (this)); \
56 scm_done_malloc (sizeof (CL)); \
61 CL::free_smob (SCM ses) \
63 CL * s = (CL*) SCM_CDR (ses); \
67 ADD_SCM_INIT_FUNC (CL, CL::init_smobs)
69 #define IMPLEMENT_SMOBS(CL) \
70 IMPLEMENT_SIMPLE_SMOBS (CL) \
74 SCM s = unprotected_smobify_self ();\
75 scm_gc_protect_object (s);\
79 CL::unprotected_smobify_self () \
82 This is local. We don't assign to self_scm_ directly, to assure \
83 that S isn't GC-ed from under us. \
85 We don't use smobbed_self () to ensure that mark_smob () doesn't have to \
86 deal half-initialized objects: scm_done_malloc ( ) might trigger GC. \
87 the warning in smobs.hh is just to be doubleplus goodly sure \
91 SCM_SETCAR (s,CL::smob_tag_); \
92 SCM_SETCDR (s, SCM_PACK (this)); \
94 scm_done_malloc (sizeof (CL)); \
98 #define IMPLEMENT_DEFAULT_EQUAL_P(CL) \
100 CL::equal_p (SCM a , SCM b) \
102 return a == b ? SCM_BOOL_T : SCM_BOOL_F; \
106 #endif /* LY_SMOBS_ICC */