2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
5 Jan Nieuwenhuizen <janneke@gnu.org>
7 LilyPond is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 LilyPond is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
21 #include "lily-parser.hh"
24 #include "file-name.hh"
25 #include "file-path.hh"
26 #include "international.hh"
27 #include "lily-lexer.hh"
28 #include "lily-version.hh"
29 #include "ly-module.hh"
31 #include "output-def.hh"
32 #include "paper-book.hh"
35 #include "source-file.hh"
38 #include "program-option.hh"
40 #include "ly-smobs.icc"
42 Lily_parser::Lily_parser (Sources *sources)
46 default_duration_ = Duration (2, 0);
52 lexer_ = new Lily_lexer (sources_, this);
56 Lily_parser::Lily_parser (Lily_parser const &src, SCM closures, SCM location)
59 sources_ = src.sources_;
60 default_duration_ = src.default_duration_;
62 output_basename_ = src.output_basename_;
68 lexer_ = new Lily_lexer (*src.lexer_, this, location);
73 Lily_parser::~Lily_parser ()
78 Lily_parser::mark_smob (SCM s)
80 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
81 scm_gc_mark (parser->closures_);
82 return (parser->lexer_) ? parser->lexer_->self_scm () : SCM_EOL;
86 Lily_parser::print_smob (SCM s, SCM port, scm_print_state *)
88 scm_puts ("#<Lily_parser ", port);
89 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
91 scm_display (parser->lexer_->self_scm (), port);
93 scm_puts ("(no lexer yet)", port);
94 scm_puts (" >", port);
98 /* Process one .ly file, or book. */
100 Lily_parser::parse_file (const string &init, const string &name, const string &out_name)
102 lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
103 output_basename_ = out_name;
105 lexer_->main_input_name_ = name;
107 message (_ ("Parsing..."));
111 lexer_->new_input (init, sources_);
114 string s = global_path.find (f.base_ + ".twy");
115 s = gulp_file_to_string (s, false, -1);
116 scm_eval_string (ly_string2scm (s));
118 /* Read .ly IN_FILE, lex, parse, write \score blocks from IN_FILE to
119 OUT_FILE (unless IN_FILE redefines output file name). */
121 SCM mod = lexer_->set_current_scope ();
126 while (!lexer_->is_clean ());
129 Don't mix cyclic pointers with weak tables.
131 lexer_->set_identifier (ly_symbol2scm ("parser"),
133 ly_reexport_module (scm_current_module ());
135 scm_set_current_module (mod);
137 error_level_ = error_level_ | lexer_->error_level_;
142 Lily_parser::parse_string (const string &ly_code)
144 lexer_->main_input_name_ = "<string>";
145 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
147 SCM mod = lexer_->set_current_scope ();
148 SCM parser = lexer_->lookup_identifier_symbol (ly_symbol2scm ("parser"));
149 lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
151 lexer_->set_identifier (ly_symbol2scm ("parser"), parser);
152 scm_set_current_module (mod);
154 error_level_ = error_level_ | lexer_->error_level_;
158 Lily_parser::parse_string_expression (const string &ly_code, const string &filename,
161 lexer_->main_input_name_ = filename;
162 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
165 lexer_->get_source_file ()->set_line (0, line);
167 SCM mod = lexer_->set_current_scope ();
168 SCM parser = lexer_->lookup_identifier_symbol (ly_symbol2scm ("parser"));
169 lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
170 lexer_->push_extra_token (Input (), EMBEDDED_LILY);
171 SCM result = do_yyparse ();
173 lexer_->set_identifier (ly_symbol2scm ("parser"), parser);
174 scm_set_current_module (mod);
176 error_level_ = error_level_ | lexer_->error_level_;
181 Lily_parser::include_string (const string &ly_code)
183 lexer_->new_input ("<included string>", ly_code, sources_);
187 Lily_parser::clear ()
191 while (lexer_->has_scope ())
192 lexer_->remove_scope ();
199 Lily_parser::here_str0 () const
201 return lexer_->here_str0 ();
205 Lily_parser::parser_error (const string &s)
207 lexer_->here_input ().error (_ (s.c_str ()));
212 Lily_parser::parser_error (Input const &i, const string &s)
218 IMPLEMENT_SMOBS (Lily_parser);
219 IMPLEMENT_TYPE_P (Lily_parser, "ly:lily-parser?");
220 IMPLEMENT_DEFAULT_EQUAL_P (Lily_parser);
222 /****************************************************************
224 ****************************************************************/
227 get_layout (Lily_parser *parser)
229 SCM id = parser->lexer_->lookup_identifier ("$defaultlayout");
230 Output_def *layout = unsmob_output_def (id);
231 layout = layout ? layout->clone () : new Output_def;
232 layout->set_variable (ly_symbol2scm ("is-layout"), SCM_BOOL_T);
238 get_midi (Lily_parser *parser)
240 SCM id = parser->lexer_->lookup_identifier ("$defaultmidi");
241 Output_def *layout = unsmob_output_def (id);
242 layout = layout ? layout->clone () : new Output_def;
243 layout->set_variable (ly_symbol2scm ("is-midi"), SCM_BOOL_T);
247 /* Return a copy of the top of $papers stack, or $defaultpaper if the
250 get_paper (Lily_parser *parser)
252 SCM papers = parser->lexer_->lookup_identifier ("$papers");
253 Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers))
254 ? 0 : unsmob_output_def (scm_car (papers));
255 SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
256 layout = layout ? layout : unsmob_output_def (default_paper);
258 layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
259 layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
263 /* Initialize (reset) the $papers stack */
265 init_papers (Lily_parser *parser)
267 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"), SCM_EOL);
270 /* Push a paper on top of $papers stack */
272 push_paper (Lily_parser *parser, Output_def *paper)
274 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
275 scm_cons (paper->self_scm (),
276 parser->lexer_->lookup_identifier ("$papers")));
279 /* Pop a paper from $papers stack */
281 pop_paper (Lily_parser *parser)
283 if (scm_is_pair (parser->lexer_->lookup_identifier ("$papers")))
284 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
285 scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
288 /* Change the paper on top of $papers stack */
290 set_paper (Lily_parser *parser, Output_def *paper)
292 scm_set_car_x (parser->lexer_->lookup_identifier ("$papers"), paper->self_scm ());
296 get_header (Lily_parser *parser)
298 SCM id = parser->lexer_->lookup_identifier ("$defaultheader");
299 if (!ly_is_module (id))
300 id = parser->make_scope ();
303 SCM nid = parser->make_scope ();
304 ly_module_copy (nid, id);
312 Lily_parser::make_scope () const
314 SCM module = ly_make_module (be_safe_global);