2 lily-parser.cc -- implement Lily_parser
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "lily-parser.hh"
13 #include "file-name.hh"
14 #include "file-path.hh"
15 #include "international.hh"
16 #include "lily-lexer.hh"
17 #include "lily-version.hh"
18 #include "ly-module.hh"
20 #include "output-def.hh"
21 #include "paper-book.hh"
25 #include "text-metrics.hh"
27 #include "program-option.hh"
29 #include "ly-smobs.icc"
31 Lily_parser::Lily_parser (Sources *sources)
35 default_duration_ = Duration (2, 0);
40 lexer_ = new Lily_lexer (sources_, this);
44 Lily_parser::Lily_parser (Lily_parser const &src)
47 sources_ = src.sources_;
48 default_duration_ = src.default_duration_;
49 error_level_ = src.error_level_;
50 output_basename_ = src.output_basename_;
55 lexer_ = new Lily_lexer (*src.lexer_, this);
61 Lily_parser::~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 ("#<Lily_parser ", port);
77 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
79 scm_display (parser->lexer_->self_scm (), port);
81 scm_puts ("(no lexer yet)", port);
82 scm_puts (" >", port);
86 /* Process one .ly file, or book. */
88 Lily_parser::parse_file (string init, string name, string out_name)
90 if (get_output_backend_name () == "tex")
91 try_load_text_metrics (out_name);
94 lexer_->set_identifier (ly_symbol2scm ("parser"), self_scm ());
95 output_basename_ = out_name;
97 lexer_->main_input_name_ = name;
99 message (_ ("Parsing..."));
103 lexer_->new_input (init, sources_);
106 string s = global_path.find (f.base_ + ".twy");
107 s = gulp_file_to_string (s, false, -1);
108 scm_eval_string (ly_string2scm (s));
110 /* Read .ly IN_FILE, lex, parse, write \score blocks from IN_FILE to
111 OUT_FILE (unless IN_FILE redefines output file name). */
113 SCM mod = lexer_->set_current_scope ();
117 Don't mix cyclic pointers with weak tables.
119 lexer_->set_identifier (ly_symbol2scm ("parser"),
121 ly_reexport_module (scm_current_module ());
123 scm_set_current_module (mod);
125 if (!define_spots_.empty ())
127 define_spots_.back ().warning (_ ("braces do not match"));
131 error_level_ = error_level_ | lexer_->error_level_;
136 Lily_parser::parse_string (string ly_code)
139 lexer_->set_identifier (ly_symbol2scm ("parser"),
142 lexer_->main_input_name_ = "<string>";
143 lexer_->is_main_input_ = true;
144 lexer_->new_input (lexer_->main_input_name_, ly_code, sources_);
146 SCM mod = lexer_->set_current_scope ();
148 scm_set_current_module (mod);
150 if (!define_spots_.empty ())
152 if (define_spots_.empty ()
154 programming_error ("define_spots_ don't match, but error_level_ not set.");
157 error_level_ = error_level_ | lexer_->error_level_;
161 Lily_parser::clear ()
165 while (lexer_->has_scope ())
166 lexer_->remove_scope ();
173 Lily_parser::here_str0 () const
175 return lexer_->here_str0 ();
179 Lily_parser::parser_error (string s)
181 lexer_->here_input ().error (_ (s.c_str ()));
186 Lily_parser::parser_error (Input const &i, string s)
194 IMPLEMENT_SMOBS (Lily_parser);
195 IMPLEMENT_TYPE_P (Lily_parser, "ly:lily-parser?");
196 IMPLEMENT_DEFAULT_EQUAL_P (Lily_parser);
199 /****************************************************************
201 ****************************************************************/
204 get_layout (Lily_parser *parser)
206 SCM id = parser->lexer_->lookup_identifier ("$defaultlayout");
207 Output_def *layout = unsmob_output_def (id);
208 layout = layout ? layout->clone () : new Output_def;
209 layout->set_variable (ly_symbol2scm ("is-layout"), SCM_BOOL_T);
215 get_midi (Lily_parser *parser)
217 SCM id = parser->lexer_->lookup_identifier ("$defaultmidi");
218 Output_def *layout = unsmob_output_def (id);
219 layout = layout ? layout->clone () : new Output_def;
220 layout->set_variable (ly_symbol2scm ("is-midi"), SCM_BOOL_T);
224 /* Return a copy of the top of $papers stack, or $defaultpaper if the
227 get_paper (Lily_parser *parser)
229 SCM papers = parser->lexer_->lookup_identifier ("$papers");
230 Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers)) ?
231 0 : unsmob_output_def (scm_car (papers));
232 SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
233 layout = layout ? layout : unsmob_output_def (default_paper);
235 layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
236 layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
240 /* Initialize (reset) the $papers stack */
242 init_papers (Lily_parser *parser)
244 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"), SCM_EOL);
247 /* Push a paper on top of $papers stack */
249 push_paper (Lily_parser *parser, Output_def *paper)
251 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
252 scm_cons (paper->self_scm (),
253 parser->lexer_->lookup_identifier ("$papers")));
256 /* Pop a paper from $papers stack */
258 pop_paper (Lily_parser *parser)
260 if (! scm_is_null (parser->lexer_->lookup_identifier ("$papers")))
261 parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
262 scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
265 /* Change the paper on top of $papers stack */
267 set_paper (Lily_parser *parser, Output_def *paper)
269 scm_set_car_x (parser->lexer_->lookup_identifier ("$papers"), paper->self_scm ());
273 get_header (Lily_parser *parser)
275 SCM id = parser->lexer_->lookup_identifier ("$defaultheader");
276 if (!ly_is_module (id))
277 id = parser->make_scope ();
280 SCM nid = parser->make_scope ();
281 ly_module_copy (nid, id);
289 Lily_parser::make_scope () const
291 SCM module = ly_make_anonymous_module (be_safe_global);