2 translator-scheme.cc -- implement
4 source file of the GNU LilyPond music typesetter
6 (c) 2002--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "translator.hh"
11 #include "translator-def.hh"
13 #include "translator-group.hh"
14 #include "lily-guile.hh"
16 LY_DEFINE(ly_get_context_property,
17 "ly:get-context-property", 2, 0, 0,
18 (SCM context, SCM name),
19 "retrieve the value of @var{name} from context @var{context}")
21 Translator *t = unsmob_translator (context);
22 Translator_group* tr= dynamic_cast<Translator_group*> (t);
23 SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Translator group");
24 SCM_ASSERT_TYPE(gh_symbol_p (name), name, SCM_ARG2, __FUNCTION__, "symbol");
26 return tr->internal_get_property (name);
30 LY_DEFINE(ly_set_context_property,
31 "ly:set-context-property", 3, 0, 0,
32 (SCM context, SCM name, SCM val),
33 "set value of property @var{name} in context @var{context} to @var{val}.")
35 Translator *t = unsmob_translator (context);
36 Translator_group* tr= dynamic_cast<Translator_group*> (t);
38 SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Context");
39 SCM_ASSERT_TYPE(gh_symbol_p (name), name, SCM_ARG2, __FUNCTION__, "symbol");
41 tr->internal_set_property (name, val);
43 return SCM_UNSPECIFIED;
47 LY_DEFINE(ly_context_property_where_defined,
48 "ly:context-property-where-defined", 2, 0, 0,
49 (SCM context, SCM name),
50 "Return the context above @var{context} where @var{name} is defined.")
52 Translator *t = unsmob_translator (context);
53 Translator_group* tr = dynamic_cast<Translator_group*> (t);
54 SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Context");
55 SCM_ASSERT_TYPE(gh_symbol_p (name), name, SCM_ARG2, __FUNCTION__, "symbol");
58 tr = tr->where_defined (name);
60 return tr? tr->self_scm(): SCM_EOL;
63 LY_DEFINE(ly_unset_context_property,
64 "ly:unset-context-property", 2, 0, 0,
65 (SCM context, SCM name),
66 "Unset value of property @var{name} in context @var{context}.")
68 Translator *t = unsmob_translator (context);
69 Translator_group* tr = dynamic_cast<Translator_group*> (t);
70 SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Context");
71 SCM_ASSERT_TYPE(gh_symbol_p (name), name, SCM_ARG2, __FUNCTION__, "symbol");
73 tr->unset_property (name);
75 return SCM_UNSPECIFIED;
80 LY_DEFINE(ly_context_parent,
81 "ly:context-parent", 1, 0, 0,
83 "Return the parent of @var{context}, #f if none.")
85 Translator *t = unsmob_translator (context);
86 Translator_group* tr= dynamic_cast<Translator_group*> (t);
88 SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Context");
90 tr = tr->daddy_trans_ ;
92 return tr->self_scm();
99 LY_DEFINE(ly_context_properties,
100 "ly:context-properties", 1, 0, 0,
102 "Return all properties of @var{context} in an alist.")
104 Translator *t = unsmob_translator (context);
105 Translator_group* tr= dynamic_cast<Translator_group*> (t);
107 SCM_ASSERT_TYPE(tr, context, SCM_ARG1, __FUNCTION__, "Context");
109 return tr->properties_as_alist ();
114 LY_DEFINE(ly_translator_name,
115 "ly:translator-name", 1,0,0, (SCM trans),
116 "Return the type name of the translator @var{trans}.")
118 Translator* tr = unsmob_translator (trans);
119 SCM_ASSERT_TYPE(tr, trans, SCM_ARG1, __FUNCTION__, "Context");
121 char const* nm = classname (tr);
122 return scm_makfrom0str (nm);
125 LY_DEFINE(ly_translator_description,
126 "ly:translator-description",
128 "Return an alist of properties of translator @var{me}.")
130 Translator *tr =unsmob_translator (me);
131 SCM_ASSERT_TYPE (tr, me, SCM_ARG1, __FUNCTION__, "Context");
133 return tr->translator_description ();
138 Translator::print_smob (SCM s, SCM port, scm_print_state *)
140 Translator *sc = (Translator *) ly_cdr (s);
142 scm_puts ("#<Translator ", port);
143 if (Translator_def *d=unsmob_translator_def (sc->definition_))
145 scm_display (d->type_name_, port);
148 scm_display (ly_translator_name (s), port);
150 scm_display (sc->simple_trans_list_, port);
153 don't try to print properties, that is too much hassle.
155 scm_puts (" >", port);