2 ly-smobs.icc -- implement smob glue.
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
15 #define IMPLEMENT_TYPE_P(CL, FUNCNAME)\
16 void init_type_ ## CL ()\
18 SCM subr = scm_c_define_gsubr (FUNCNAME, 1, 0, 0, (Scheme_function_unknown) CL::smob_p);\
19 ly_add_function_documentation (subr, FUNCNAME, "(SCM x)", "Is @var{x} a @code{" #CL "} object?");\
20 scm_c_export (FUNCNAME, NULL);\
22 ADD_SCM_INIT_FUNC (init_type_ ## CL, init_type_ ## CL)
25 #define SCM_CELL_TYPE(X) SCM_CAR (X)
28 #ifndef SCM_CELL_WORD_1
29 #define SCM_CELL_WORD_1(X) SCM_CDR (X)
34 #define IMPLEMENT_BASE_SMOBS(CL) \
35 scm_t_bits CL::smob_tag_; \
39 if (SCM_NIMP (s) && SCM_CELL_TYPE (s) == smob_tag_) \
48 smob_tag_ = scm_make_smob_type (#CL, 0); \
49 scm_set_smob_mark (smob_tag_, CL::mark_smob); \
50 scm_set_smob_free (smob_tag_, CL::free_smob); \
51 scm_set_smob_print (smob_tag_, CL::print_smob); \
52 scm_set_smob_equalp (smob_tag_, CL::equal_p); \
55 CL::free_smob (SCM ses) \
57 CL * s = (CL*) SCM_CDR (ses); \
59 scm_gc_unregister_collectable_memory (s, sizeof (CL), #CL " smob"); \
60 return SMOB_FREE_RETURN_VAL(CL);\
62 ADD_SCM_INIT_FUNC (CL, CL::init_smobs)
65 #define IMPLEMENT_SIMPLE_SMOBS(CL) \
66 IMPLEMENT_BASE_SMOBS(CL);\
67 SCM CL::smobbed_copy () const \
69 CL * ptr = new CL (*this);\
71 s = gh_cons (SCM_PACK (CL::smob_tag_), SCM_PACK (ptr)); \
72 scm_gc_register_collectable_memory ((CL*)this, sizeof (CL), #CL " smob"); \
78 #define IMPLEMENT_SMOBS(CL) \
79 IMPLEMENT_BASE_SMOBS (CL) \
83 SCM s = unprotected_smobify_self ();\
84 scm_gc_protect_object (s);\
88 CL::unprotected_smobify_self () \
91 This is local. We don't assign to self_scm_ directly, to assure \
92 that S isn't GC-ed from under us. \
94 We don't use smobbed_self () to ensure that mark_smob () doesn't have to \
95 deal half-initialized objects: scm_done_malloc ( ) might trigger GC. \
96 the warning in smobs.hh is just to be doubleplus goodly sure \
99 SCM_NEWSMOB (s, CL::smob_tag_, this);\
101 scm_gc_register_collectable_memory (this, sizeof (CL), #CL " smob"); \
105 #define IMPLEMENT_DEFAULT_EQUAL_P(CL) \
107 CL::equal_p (SCM a , SCM b) \
109 return a == b ? SCM_BOOL_T : SCM_BOOL_F; \
113 #endif /* LY_SMOBS_ICC */