2 lily-parser.cc -- implement Lily_parser
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "file-name.hh"
12 #include "file-path.hh"
13 #include "lily-version.hh"
14 #include "ly-module.hh"
16 #include "lily-lexer.hh"
17 #include "lily-parser.hh"
18 #include "output-def.hh"
19 #include "paper-book.hh"
26 Lily_parser::Lily_parser (Sources *sources)
32 default_duration_ = Duration (2, 0);
34 last_beam_start_ = SCM_EOL;
39 Lily_parser::Lily_parser (Lily_parser const &src)
41 book_count_ = src.book_count_;
42 score_count_ = src.score_count_;
44 sources_ = src.sources_;
45 default_duration_ = src.default_duration_;
46 error_level_ = src.error_level_;
47 last_beam_start_ = src.last_beam_start_;
51 lexer_ = new Lily_lexer (*src.lexer_);
53 scm_gc_unprotect_object (lexer_->self_scm ());
56 Lily_parser::~Lily_parser ()
60 #include "ly-smobs.icc"
62 IMPLEMENT_SMOBS (Lily_parser);
63 IMPLEMENT_TYPE_P (Lily_parser, "ly:lily-parser?");
64 IMPLEMENT_DEFAULT_EQUAL_P (Lily_parser);
67 Lily_parser::mark_smob (SCM s)
69 Lily_parser *parser = (Lily_parser*) SCM_CELL_WORD_1 (s);
70 return (parser->lexer_) ? parser->lexer_->self_scm () : SCM_EOL;
74 Lily_parser::print_smob (SCM s, SCM port, scm_print_state*)
76 scm_puts ("#<my_lily_parser ", port);
77 Lily_parser *parser = (Lily_parser*) SCM_CELL_WORD_1 (s);
79 scm_puts (" >", port);
84 /* Process one .ly file, or book. */
86 Lily_parser::parse_file (String init, String name, String out_name)
88 lexer_ = new Lily_lexer (sources_);
89 scm_gc_unprotect_object (lexer_->self_scm ());
91 lexer_->set_identifier (ly_symbol2scm ("parser"),
93 output_basename_ = out_name;
95 lexer_->main_input_name_ = name;
97 progress_indication (_ ("Parsing..."));
98 progress_indication ("\n");
102 lexer_->new_input (init, sources_);
104 /* Read .ly IN_FILE, lex, parse, write \score blocks from IN_FILE to
105 OUT_FILE (unless IN_FILE redefines output file name). */
108 if (!define_spots_.is_empty ())
110 define_spots_.top ().warning (_ ("Braces don't match"));
114 error_level_ = error_level_ | lexer_->error_level_;
119 Lily_parser::parse_string (String ly_code)
121 Lily_lexer * parent = lexer_;
122 lexer_ = (parent == 0 ? new Lily_lexer (sources_)
123 : new Lily_lexer (*parent));
124 scm_gc_unprotect_object (lexer_->self_scm ());
127 SCM oldmod = scm_current_module ();
128 scm_set_current_module (scm_car (lexer_->scopes_));
131 lexer_->set_identifier (ly_symbol2scm ("parser"),
134 lexer_->main_input_name_ = "<string>";
135 lexer_->main_input_b_ = true;
138 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
141 if (!define_spots_.is_empty ())
143 define_spots_.top ().warning (_ ("Braces don't match"));
147 error_level_ = error_level_ | lexer_->error_level_;
149 scm_set_current_module (oldmod);
154 Lily_parser::push_spot ()
156 define_spots_.push (here_input ());
160 Lily_parser::here_str0 () const
162 return lexer_->here_str0 ();
166 Lily_parser::parser_error (String s)
168 here_input ().error (s);
173 Lily_parser::pop_spot ()
175 return define_spots_.pop ();
179 Lily_parser::here_input () const
182 Parsing looks ahead , so we really want the previous location of the
183 lexer, not lexer_->here_input ().
187 Actually, that gets very icky when there are white space, because
188 the line-numbers are all wrong. Let's try the character before
189 the current token. That gets the right result for note/duration
190 stuff, but doesn't mess up for errors in the 1st token of the
193 Input hi (lexer_->here_input ());
195 char const * bla = hi.defined_str0_;
196 if (hi.line_number () > 1
197 || hi.column_number () > 1)
200 return Input (hi.source_file_, bla);
204 /****************************************************************/
210 bool store_locations_global_b;
212 /* Do not append `!' suffix, since 1st argument is not modified. */
213 LY_DEFINE (ly_set_point_and_click, "ly:set-point-and-click",
215 "Set the options for Point-and-click source specials output. The\n"
216 "argument is a symbol. Possible options are @code{none} (no source specials),\n"
217 "@code{line} and @code{line-column}")
220 SCM val = SCM_BOOL_F;
221 if (ly_symbol2scm ("line-column") == what)
222 val = ly_scheme_function ("line-column-location");
223 else if (what == ly_symbol2scm ("line"))
224 val = ly_scheme_function ("line-location");
226 scm_module_define (global_lily_module, ly_symbol2scm ("point-and-click"),
228 store_locations_global_b = ly_c_procedure_p (val);
229 return SCM_UNSPECIFIED;
232 LY_DEFINE (ly_parse_file, "ly:parse-file",
234 "Parse a single @code{.ly} file. "
235 "Upon failure, throw @code{ly-file-failed} key.")
237 SCM_ASSERT_TYPE (scm_is_string (name), name, SCM_ARG1, __FUNCTION__, "string");
238 char const *file = scm_i_string_chars (name);
239 char const *extensions[] = {"ly", "", 0};
241 String file_name = global_path.find (file, extensions);
243 /* By default, use base name of input file for output file name,
244 write output to cwd; do not use root and directory parts of input
246 File_name out_file_name (file_name);
248 global_path.append (out_file_name.dir_);
250 out_file_name.ext_ = "";
251 out_file_name.root_ = "";
252 out_file_name.dir_ = "";
254 if (!output_name_global.is_empty ())
255 out_file_name = File_name (output_name_global);
258 if (!init_name_global.is_empty ())
259 init = init_name_global;
263 String out_file = out_file_name.to_string ();
265 if (init.length () && global_path.find (init).is_empty ())
267 warning (_f ("can't find init file: `%s'", init));
268 warning (_f ("(search path: `%s')",
269 global_path.to_string ().to_str0 ()));
273 if ((file_name != "-") && global_path.find (file_name).is_empty ())
275 warning (_f ("can't find file: `%s'", file_name));
276 scm_throw (ly_symbol2scm ("ly-file-failed"),
277 scm_list_1 (scm_makfrom0str (file_name.to_str0 ())));
282 sources.set_path (&global_path);
284 progress_indication (_f ("Now processing `%s'", file_name.to_str0 ()));
285 progress_indication ("\n");
287 Lily_parser *parser = new Lily_parser (&sources);
289 parser->parse_file (init, file_name, out_file);
291 bool error = parser->error_level_;
292 scm_gc_unprotect_object (parser->self_scm ());
295 /* TODO: pass renamed input file too. */
296 scm_throw (ly_symbol2scm ("ly-file-failed"),
297 scm_list_1 (scm_makfrom0str (file_name.to_str0 ())));
299 return SCM_UNSPECIFIED;
302 LY_DEFINE (ly_parse_string, "ly:parse-string",
303 1, 0, 0, (SCM ly_code),
304 "Parse the string LY_CODE. "
305 "Upon failure, throw @code{ly-file-failed} key.")
307 SCM_ASSERT_TYPE (scm_is_string (ly_code), ly_code, SCM_ARG1, __FUNCTION__, "string");
310 sources.set_path (&global_path);
311 Lily_parser *parser = new Lily_parser (&sources);
312 scm_module_define (global_lily_module, ly_symbol2scm ("parser"),
313 parser->self_scm ());
314 parser->parse_string (ly_scm2string (ly_code));
315 scm_gc_unprotect_object (parser->self_scm ());
318 return SCM_UNSPECIFIED;
321 LY_DEFINE (ly_clone_parser, "ly:clone-parser",
322 1, 0, 0, (SCM parser_smob),
323 "Return a clone of PARSER_SMOB.")
325 Lily_parser *parser = unsmob_my_lily_parser (parser_smob);
326 Lily_parser *clone = new Lily_parser (*parser);
328 /* FIXME: should copy scopes too. */
329 return scm_gc_unprotect_object (clone->self_scm ());
332 LY_DEFINE (ly_parser_define, "ly:parser-define",
333 3, 0, 0, (SCM parser_smob, SCM symbol, SCM val),
334 "Bind SYMBOL to VAL in PARSER_SMOB's module.")
336 Lily_parser *parser = unsmob_my_lily_parser (parser_smob);
337 SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, SCM_ARG2, __FUNCTION__, "symbol");
338 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG2, __FUNCTION__, "parser");
340 parser->lexer_->set_identifier (scm_symbol_to_string (symbol), val);
341 return SCM_UNSPECIFIED;
344 LY_DEFINE (ly_parser_lookup, "ly:parser-lookup",
345 2, 0, 0, (SCM parser_smob, SCM symbol),
346 "Lookup @var{symbol} in @var{parser_smob}'s module. "
349 Lily_parser *parser = unsmob_my_lily_parser (parser_smob);
351 SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, SCM_ARG2, __FUNCTION__, "symbol");
352 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG2, __FUNCTION__, "parser");
354 SCM val= parser->lexer_->lookup_identifier (ly_scm2string (scm_symbol_to_string (symbol)));
355 if (val != SCM_UNDEFINED)
361 LY_DEFINE (ly_parser_parse_string, "ly:parser-parse-string",
362 2, 0, 0, (SCM parser_smob, SCM ly_code),
363 "Parse the string LY_CODE with PARSER_SMOB."
364 "Upon failure, throw @code{ly-file-failed} key.")
366 Lily_parser *parser = unsmob_my_lily_parser (parser_smob);
368 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG1, __FUNCTION__, "parser");
369 SCM_ASSERT_TYPE (scm_is_string (ly_code), ly_code, SCM_ARG2, __FUNCTION__, "string");
371 parser->parse_string (ly_scm2string (ly_code));
373 return SCM_UNSPECIFIED;
377 get_layout (Lily_parser *parser)
379 SCM id = parser->lexer_->lookup_identifier ("$defaultlayout");
380 Output_def *layout = unsmob_output_def (id);
381 layout = layout ? layout->clone () : new Output_def;
382 layout->set_variable (ly_symbol2scm ("is-layout"), SCM_BOOL_T);
389 get_midi (Lily_parser *parser)
391 SCM id = parser->lexer_->lookup_identifier ("$defaultmidi");
392 Output_def *layout = unsmob_output_def (id);
393 layout = layout ? layout->clone () : new Output_def;
394 layout->set_variable (ly_symbol2scm ("is-midi"), SCM_BOOL_T);
400 get_paper (Lily_parser *parser)
402 SCM id = parser->lexer_->lookup_identifier ("$defaultpaper");
403 Output_def *layout = unsmob_output_def (id);
405 layout = layout ? dynamic_cast<Output_def*> (layout->clone ()) : new Output_def;
406 layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
411 /* TODO: move this to Scheme? Why take the parser arg, and all the back
412 & forth between scm and c++? */
413 LY_DEFINE (ly_parser_print_score, "ly:parser-print-score",
415 (SCM parser_smob, SCM score_smob),
416 "Print score, i.e., the classic way.")
418 Lily_parser *parser = unsmob_my_lily_parser (parser_smob);
419 Score *score = unsmob_score (score_smob);
421 if (score->error_found_)
422 return SCM_UNSPECIFIED;
424 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG1, __FUNCTION__, "parser");
425 SCM_ASSERT_TYPE (score, score_smob, SCM_ARG2, __FUNCTION__, "score");
427 SCM header = ly_c_module_p (score->header_) ? score->header_
428 : parser->lexer_->lookup_identifier ("$globalheader");
430 File_name outname (parser->output_basename_);
431 int *c = &parser->book_count_;
433 outname.base_ += "-" + to_string (*c);
436 SCM os = scm_makfrom0str (outname.to_string ().to_str0 ());
437 SCM paper = get_paper (parser)->self_scm ();
438 for (int i = 0; i < score->defs_.size (); i++)
439 default_rendering (score->get_music (), score->defs_[i]->self_scm (),
443 if (score->defs_.is_empty ())
445 Output_def *layout = get_layout (parser);
446 default_rendering (score->get_music(), layout->self_scm (),
447 get_paper (parser)->self_scm (),
449 scm_gc_unprotect_object (layout->self_scm ());
451 return SCM_UNSPECIFIED;
455 LY_DEFINE (ly_parser_set_note_names, "ly:parser-set-note-names",
456 2, 0, 0, (SCM parser, SCM names),
457 "Replace current note names in @var{parser}. "
458 "@var{names} is an alist of symbols. "
459 "This only has effect if the current mode is notes.")
461 Lily_parser *p = unsmob_my_lily_parser (parser);
462 SCM_ASSERT_TYPE(p, parser, SCM_ARG1, __FUNCTION__, "Lilypond parser");
464 if (p->lexer_->is_note_state ())
466 p->lexer_->pop_state ();
467 p->lexer_->push_note_state (alist_to_hashq (names));
470 return SCM_UNSPECIFIED;
473 LY_DEFINE (ly_parser_print_book, "ly:parser-print-book",
474 2, 0, 0, (SCM parser_smob, SCM book_smob),
477 Lily_parser *parser = unsmob_my_lily_parser (parser_smob);
478 Book *book = unsmob_book (book_smob);
479 Output_def *bp = unsmob_output_def (parser->lexer_->lookup_identifier ("$defaultpaper"));
481 SCM_ASSERT_TYPE (parser, parser_smob, SCM_ARG1, __FUNCTION__, "Lilypond parser");
482 SCM_ASSERT_TYPE (book, book_smob, SCM_ARG2, __FUNCTION__, "Book");
484 /* ugh. changing argument.*/
487 File_name outname (parser->output_basename_);
488 int *c = &parser->book_count_;
490 outname.base_ += "-" + to_string (*c);
493 Output_def *layout = get_layout (parser);
495 Paper_book* pb = book->process (outname.to_string (), layout);
498 pb->output (outname.to_string ());
499 scm_gc_unprotect_object (pb->self_scm ());
502 scm_gc_unprotect_object (layout->self_scm ());
503 return SCM_UNSPECIFIED;