2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2011 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"
37 #include "program-option.hh"
39 #include "ly-smobs.icc"
41 Lily_parser::Lily_parser (Sources *sources)
45 default_duration_ = Duration (2, 0);
47 local_environment_ = SCM_UNDEFINED;
51 lexer_ = new Lily_lexer (sources_, this);
55 Lily_parser::Lily_parser (Lily_parser const &src, SCM env)
58 sources_ = src.sources_;
59 default_duration_ = src.default_duration_;
61 output_basename_ = src.output_basename_;
62 local_environment_ = env;
67 lexer_ = new Lily_lexer (*src.lexer_, this);
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->local_environment_);
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 (string init, string name, string out_name)
103 lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
104 output_basename_ = out_name;
106 lexer_->main_input_name_ = name;
108 message (_ ("Parsing..."));
112 lexer_->new_input (init, sources_);
115 string s = global_path.find (f.base_ + ".twy");
116 s = gulp_file_to_string (s, false, -1);
117 scm_eval_string (ly_string2scm (s));
119 /* Read .ly IN_FILE, lex, parse, write \score blocks from IN_FILE to
120 OUT_FILE (unless IN_FILE redefines output file name). */
122 SCM mod = lexer_->set_current_scope ();
126 Don't mix cyclic pointers with weak tables.
128 lexer_->set_identifier (ly_symbol2scm ("parser"),
130 ly_reexport_module (scm_current_module ());
132 scm_set_current_module (mod);
134 if (!define_spots_.empty ())
136 define_spots_.back ().warning (_ ("braces do not match"));
140 error_level_ = error_level_ | lexer_->error_level_;
145 Lily_parser::parse_string (string ly_code)
148 lexer_->set_identifier (ly_symbol2scm ("parser"),
151 lexer_->main_input_name_ = "<string>";
152 lexer_->is_main_input_ = true;
153 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
155 SCM mod = lexer_->set_current_scope ();
157 scm_set_current_module (mod);
159 if (!define_spots_.empty ())
161 if (define_spots_.empty ()
163 programming_error ("define_spots_ don't match, but error_level_ not set.");
166 error_level_ = error_level_ | lexer_->error_level_;
170 Lily_parser::parse_string_expression (string ly_code)
173 lexer_->set_identifier (ly_symbol2scm ("parser"),
176 lexer_->main_input_name_ = "<string>";
177 lexer_->is_main_input_ = true;
178 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
180 SCM mod = lexer_->set_current_scope ();
181 lexer_->push_extra_token (EMBEDDED_LILY);
183 SCM result = lexer_->lookup_identifier_symbol (ly_symbol2scm ("parseStringResult"));
184 // parseStringResult is set in the grammar rule for embedded_lilypond
186 scm_set_current_module (mod);
188 if (!define_spots_.empty ())
190 if (define_spots_.empty ()
192 programming_error ("define_spots_ don't match, but error_level_ not set.");
195 error_level_ = error_level_ | lexer_->error_level_;
200 Lily_parser::include_string (string ly_code)
202 lexer_->add_string_include (ly_code);
206 Lily_parser::clear ()
210 while (lexer_->has_scope ())
211 lexer_->remove_scope ();
218 Lily_parser::here_str0 () const
220 return lexer_->here_str0 ();
224 Lily_parser::parser_error (string s)
226 lexer_->here_input ().error (_ (s.c_str ()));
231 Lily_parser::parser_error (Input const &i, string s)
237 IMPLEMENT_SMOBS (Lily_parser);
238 IMPLEMENT_TYPE_P (Lily_parser, "ly:lily-parser?");
239 IMPLEMENT_DEFAULT_EQUAL_P (Lily_parser);
241 /****************************************************************
243 ****************************************************************/
246 get_layout (Lily_parser *parser)
248 SCM id = parser->lexer_->lookup_identifier ("$defaultlayout");
249 Output_def *layout = unsmob_output_def (id);
250 layout = layout ? layout->clone () : new Output_def;
251 layout->set_variable (ly_symbol2scm ("is-layout"), SCM_BOOL_T);
257 get_midi (Lily_parser *parser)
259 SCM id = parser->lexer_->lookup_identifier ("$defaultmidi");
260 Output_def *layout = unsmob_output_def (id);
261 layout = layout ? layout->clone () : new Output_def;
262 layout->set_variable (ly_symbol2scm ("is-midi"), SCM_BOOL_T);
266 /* Return a copy of the top of $papers stack, or $defaultpaper if the
269 get_paper (Lily_parser *parser)
271 SCM papers = parser->lexer_->lookup_identifier ("$papers");
272 Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers))
273 ? 0 : unsmob_output_def (scm_car (papers));
274 SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
275 layout = layout ? layout : unsmob_output_def (default_paper);
277 layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
278 layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
282 /* Initialize (reset) the $papers stack */
284 init_papers (Lily_parser *parser)
286 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"), SCM_EOL);
289 /* Push a paper on top of $papers stack */
291 push_paper (Lily_parser *parser, Output_def *paper)
293 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
294 scm_cons (paper->self_scm (),
295 parser->lexer_->lookup_identifier ("$papers")));
298 /* Pop a paper from $papers stack */
300 pop_paper (Lily_parser *parser)
302 if (scm_is_pair (parser->lexer_->lookup_identifier ("$papers")))
303 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
304 scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
307 /* Change the paper on top of $papers stack */
309 set_paper (Lily_parser *parser, Output_def *paper)
311 scm_set_car_x (parser->lexer_->lookup_identifier ("$papers"), paper->self_scm ());
315 get_header (Lily_parser *parser)
317 SCM id = parser->lexer_->lookup_identifier ("$defaultheader");
318 if (!ly_is_module (id))
319 id = parser->make_scope ();
322 SCM nid = parser->make_scope ();
323 ly_module_copy (nid, id);
331 Lily_parser::make_scope () const
333 SCM module = ly_make_module (be_safe_global);