2 global-context-scheme.cc -- implement Global_context bindings
4 source file of the GNU LilyPond music typesetter
6 (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "cpu-timer.hh"
10 #include "global-context.hh"
11 #include "international.hh"
13 #include "music-iterator.hh"
14 #include "music-output.hh"
16 #include "object-key.hh"
17 #include "output-def.hh"
18 #include "translator-group.hh"
21 LY_DEFINE (ly_format_output, "ly:format-output",
22 1, 0, 0, (SCM context),
23 "Given a Global context in its final state, "
24 "process it and return the @code{Music_output} object in its final state.")
26 Global_context *g = dynamic_cast<Global_context *> (unsmob_context (context));
27 SCM_ASSERT_TYPE (g, context, SCM_ARG1, __FUNCTION__, "Global context");
29 SCM output = g->get_output ();
30 progress_indication ("\n");
31 unsmob_music_output (output)->process ();
35 LY_DEFINE (ly_make_global_translator, "ly:make-global-translator",
36 1, 0, 0, (SCM global),
37 "Create a translator group and connect it to the global context\n"
38 "@var{global}. The translator group is returned.")
40 Global_context *g = dynamic_cast<Global_context *> (unsmob_context (global));
41 SCM_ASSERT_TYPE (g, global, SCM_ARG1, __FUNCTION__, "Global context");
43 Translator_group *tg = new Translator_group ();
44 tg->connect_to_context (g);
45 g->implementation_ = tg;
47 return tg->unprotect ();
50 LY_DEFINE (ly_run_translator, "ly:run-translator",
51 2, 1, 0, (SCM mus, SCM output_def, SCM key),
52 "Process @var{mus} according to @var{output_def}. \n"
53 "An interpretation context is set up,\n"
54 "and @var{mus} is interpreted with it. \n"
55 "The context is returned in its final state.\n"
57 "Optionally, this routine takes an Object-key to\n"
58 "to uniquely identify the Score block containing it.\n")
60 Output_def *odef = unsmob_output_def (output_def);
61 Music *music = unsmob_music (mus);
64 || !music->get_length ().to_bool ())
66 warning (_ ("no music found in score"));
70 SCM_ASSERT_TYPE (music, mus, SCM_ARG1, __FUNCTION__, "Music");
71 SCM_ASSERT_TYPE (odef, output_def, SCM_ARG2, __FUNCTION__,
76 Global_context *glob = new Global_context (odef, unsmob_key (key));
79 programming_error ("Couldn't create Global context");
83 SCM tgs = ly_make_global_translator (glob->self_scm ());
84 Translator_group *tg = unsmob_translator_group (tgs);
86 message (_ ("Interpreting music... "));
88 SCM protected_iter = Music_iterator::get_static_get_iterator (music);
89 Music_iterator *iter = unsmob_iterator (protected_iter);
90 iter->init_translator (music, glob);
91 iter->construct_children ();
95 warning (_ ("no music found in score"));
96 /* todo: should throw exception. */
100 glob->run_iterator_on_me (iter);
102 scm_remember_upto_here_1 (protected_iter);
103 send_stream_event (glob, "Finish", 0, 0);
105 if (be_verbose_global)
106 message (_f ("elapsed time: %.2f seconds", timer.read ()));
108 return glob->unprotect ();