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"
19 #include "output-def.hh"
20 #include "paper-book.hh"
24 #include "text-metrics.hh"
26 #include "program-option.hh"
28 #include "ly-smobs.icc"
30 Lily_parser::Lily_parser (Sources *sources)
34 default_duration_ = Duration (2, 0);
39 lexer_ = new Lily_lexer (sources_, this);
43 Lily_parser::Lily_parser (Lily_parser const &src)
46 sources_ = src.sources_;
47 default_duration_ = src.default_duration_;
48 error_level_ = src.error_level_;
49 output_basename_ = src.output_basename_;
54 lexer_ = new Lily_lexer (*src.lexer_, this);
60 Lily_parser::~Lily_parser ()
66 Lily_parser::mark_smob (SCM s)
68 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
69 return (parser->lexer_) ? parser->lexer_->self_scm () : SCM_EOL;
73 Lily_parser::print_smob (SCM s, SCM port, scm_print_state*)
75 scm_puts ("#<Lily_parser ", port);
76 Lily_parser *parser = (Lily_parser *) SCM_CELL_WORD_1 (s);
78 scm_display (parser->lexer_->self_scm (), port);
80 scm_puts ("(no lexer yet)", port);
81 scm_puts (" >", port);
85 /* Process one .ly file, or book. */
87 Lily_parser::parse_file (string init, string name, string out_name)
89 if (get_output_backend_name () == "tex")
90 try_load_text_metrics (out_name);
93 lexer_->set_identifier (ly_symbol2scm ("parser"),
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);
225 get_paper (Lily_parser *parser)
227 SCM id = parser->lexer_->lookup_identifier ("$defaultpaper");
228 Output_def *layout = unsmob_output_def (id);
230 layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
231 layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
236 get_header (Lily_parser *parser)
238 SCM id = parser->lexer_->lookup_identifier ("$defaultheader");
239 if (!ly_is_module (id))
240 id = parser->make_scope ();
243 SCM nid = parser->make_scope ();
244 ly_module_copy (nid, id);
252 Lily_parser::make_scope () const
254 return ly_make_anonymous_module (be_safe_global);