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"
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)
59 sources_ = src.sources_;
60 default_duration_ = src.default_duration_;
62 output_basename_ = src.output_basename_;
68 lexer_ = new Lily_lexer (*src.lexer_, this);
74 Lily_parser::~Lily_parser ()
79 Lily_parser::mark_smob (SCM s)
81 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
82 scm_gc_mark (parser->closures_);
83 return (parser->lexer_) ? parser->lexer_->self_scm () : SCM_EOL;
87 Lily_parser::print_smob (SCM s, SCM port, scm_print_state *)
89 scm_puts ("#<Lily_parser ", port);
90 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
92 scm_display (parser->lexer_->self_scm (), port);
94 scm_puts ("(no lexer yet)", port);
95 scm_puts (" >", port);
99 /* Process one .ly file, or book. */
101 Lily_parser::parse_file (string init, string name, string out_name)
104 lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
105 output_basename_ = out_name;
107 lexer_->main_input_name_ = name;
109 message (_ ("Parsing..."));
113 lexer_->new_input (init, sources_);
116 string s = global_path.find (f.base_ + ".twy");
117 s = gulp_file_to_string (s, false, -1);
118 scm_eval_string (ly_string2scm (s));
120 /* Read .ly IN_FILE, lex, parse, write \score blocks from IN_FILE to
121 OUT_FILE (unless IN_FILE redefines output file name). */
123 SCM mod = lexer_->set_current_scope ();
127 Don't mix cyclic pointers with weak tables.
129 lexer_->set_identifier (ly_symbol2scm ("parser"),
131 ly_reexport_module (scm_current_module ());
133 scm_set_current_module (mod);
135 error_level_ = error_level_ | lexer_->error_level_;
140 Lily_parser::parse_string (string ly_code)
143 lexer_->set_identifier (ly_symbol2scm ("parser"),
146 lexer_->main_input_name_ = "<string>";
147 lexer_->is_main_input_ = true;
148 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
150 SCM mod = lexer_->set_current_scope ();
152 scm_set_current_module (mod);
154 error_level_ = error_level_ | lexer_->error_level_;
158 Lily_parser::parse_string_expression (string ly_code, string filename,
162 lexer_->set_identifier (ly_symbol2scm ("parser"),
165 lexer_->main_input_name_ = filename;
166 lexer_->is_main_input_ = true;
167 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
170 lexer_->get_source_file ()->set_line (0, line);
172 SCM mod = lexer_->set_current_scope ();
173 lexer_->push_extra_token (EMBEDDED_LILY);
175 SCM result = lexer_->lookup_identifier_symbol (ly_symbol2scm ("parseStringResult"));
176 // parseStringResult is set in the grammar rule for embedded_lilypond
178 scm_set_current_module (mod);
180 error_level_ = error_level_ | lexer_->error_level_;
185 Lily_parser::include_string (string ly_code)
187 lexer_->new_input ("<included string>", ly_code, sources_);
191 Lily_parser::clear ()
195 while (lexer_->has_scope ())
196 lexer_->remove_scope ();
203 Lily_parser::here_str0 () const
205 return lexer_->here_str0 ();
209 Lily_parser::parser_error (string s)
211 lexer_->here_input ().error (_ (s.c_str ()));
216 Lily_parser::parser_error (Input const &i, string s)
222 IMPLEMENT_SMOBS (Lily_parser);
223 IMPLEMENT_TYPE_P (Lily_parser, "ly:lily-parser?");
224 IMPLEMENT_DEFAULT_EQUAL_P (Lily_parser);
226 /****************************************************************
228 ****************************************************************/
231 get_layout (Lily_parser *parser)
233 SCM id = parser->lexer_->lookup_identifier ("$defaultlayout");
234 Output_def *layout = unsmob_output_def (id);
235 layout = layout ? layout->clone () : new Output_def;
236 layout->set_variable (ly_symbol2scm ("is-layout"), SCM_BOOL_T);
242 get_midi (Lily_parser *parser)
244 SCM id = parser->lexer_->lookup_identifier ("$defaultmidi");
245 Output_def *layout = unsmob_output_def (id);
246 layout = layout ? layout->clone () : new Output_def;
247 layout->set_variable (ly_symbol2scm ("is-midi"), SCM_BOOL_T);
251 /* Return a copy of the top of $papers stack, or $defaultpaper if the
254 get_paper (Lily_parser *parser)
256 SCM papers = parser->lexer_->lookup_identifier ("$papers");
257 Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers))
258 ? 0 : unsmob_output_def (scm_car (papers));
259 SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
260 layout = layout ? layout : unsmob_output_def (default_paper);
262 layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
263 layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
267 /* Initialize (reset) the $papers stack */
269 init_papers (Lily_parser *parser)
271 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"), SCM_EOL);
274 /* Push a paper on top of $papers stack */
276 push_paper (Lily_parser *parser, Output_def *paper)
278 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
279 scm_cons (paper->self_scm (),
280 parser->lexer_->lookup_identifier ("$papers")));
283 /* Pop a paper from $papers stack */
285 pop_paper (Lily_parser *parser)
287 if (scm_is_pair (parser->lexer_->lookup_identifier ("$papers")))
288 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
289 scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
292 /* Change the paper on top of $papers stack */
294 set_paper (Lily_parser *parser, Output_def *paper)
296 scm_set_car_x (parser->lexer_->lookup_identifier ("$papers"), paper->self_scm ());
300 get_header (Lily_parser *parser)
302 SCM id = parser->lexer_->lookup_identifier ("$defaultheader");
303 if (!ly_is_module (id))
304 id = parser->make_scope ();
307 SCM nid = parser->make_scope ();
308 ly_module_copy (nid, id);
316 Lily_parser::make_scope () const
318 SCM module = ly_make_module (be_safe_global);