2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "lily-lexer.hh"
26 #include "context.hh" // for nested_property_alist
27 #include "international.hh"
28 #include "interval.hh"
33 #include "scm-hash.hh"
34 #include "source-file.hh"
36 #include "program-option.hh"
37 #include "lily-parser.hh"
39 static Keyword_ent the_key_tab[]
42 {"addlyrics", ADDLYRICS},
44 {"alternative", ALTERNATIVE},
46 {"bookpart", BOOKPART},
48 {"chordmode", CHORDMODE},
50 {"consists", CONSISTS},
53 {"defaultchild", DEFAULTCHILD},
55 {"description", DESCRIPTION},
56 {"drummode", DRUMMODE},
58 {"figuremode", FIGUREMODE},
60 {"grobdescriptions", GROBDESCRIPTIONS},
64 {"lyricmode", LYRICMODE},
66 {"lyricsto", LYRICSTO},
69 {"markuplines", MARKUPLINES},
73 {"notemode", NOTEMODE},
75 {"override", OVERRIDE},
78 {"relative", RELATIVE},
84 {"sequential", SEQUENTIAL},
86 {"simultaneous", SIMULTANEOUS},
91 {"transpose", TRANSPOSE},
98 Lily_lexer::Lily_lexer (Sources *sources, Lily_parser *parser)
101 keytable_ = new Keyword_table (the_key_tab);
102 chordmodifier_tab_ = SCM_EOL;
103 pitchname_tab_stack_ = SCM_EOL;
107 is_main_input_ = false;
108 start_module_ = SCM_EOL;
109 chord_repetition_ = Chord_repetition ();
112 add_scope (ly_make_module (false));
113 push_note_state (scm_c_make_hash_table (0));
114 chordmodifier_tab_ = scm_make_vector (scm_from_int (1), SCM_EOL);
117 Lily_lexer::Lily_lexer (Lily_lexer const &src, Lily_parser *parser)
118 : Includable_lexer ()
121 keytable_ = (src.keytable_) ? new Keyword_table (*src.keytable_) : 0;
122 chordmodifier_tab_ = src.chordmodifier_tab_;
123 pitchname_tab_stack_ = src.pitchname_tab_stack_;
124 sources_ = src.sources_;
125 start_module_ = SCM_EOL;
126 chord_repetition_ = src.chord_repetition_;
128 error_level_ = src.error_level_;
129 is_main_input_ = src.is_main_input_;
135 SCM scopes = SCM_EOL;
137 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
139 SCM newmod = ly_make_module (false);
140 ly_module_copy (newmod, scm_car (s));
141 *tail = scm_cons (newmod, SCM_EOL);
142 tail = SCM_CDRLOC (*tail);
146 push_note_state (scm_c_make_hash_table (0));
149 Lily_lexer::~Lily_lexer ()
155 Lily_lexer::add_scope (SCM module)
157 ly_reexport_module (scm_current_module ());
158 if (!scm_is_pair (scopes_))
159 start_module_ = scm_current_module ();
161 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
162 ly_use_module (module, scm_car (s));
163 scopes_ = scm_cons (module, scopes_);
165 set_current_scope ();
168 Lily_lexer::has_scope () const
170 return scm_is_pair (scopes_);
174 Lily_lexer::remove_scope ()
176 SCM sc = scm_car (scopes_);
177 scopes_ = scm_cdr (scopes_);
178 set_current_scope ();
183 Lily_lexer::set_current_scope ()
185 SCM old = scm_current_module ();
187 if (scm_is_pair (scopes_))
188 scm_set_current_module (scm_car (scopes_));
190 scm_set_current_module (start_module_);
196 Lily_lexer::lookup_keyword (string s)
198 return keytable_->lookup (s.c_str ());
202 Lily_lexer::keyword_list () const
209 for (vsize i = 0; i < keytable_->table_.size (); i++)
211 *tail = scm_acons (scm_from_locale_string (keytable_->table_[i].name_),
212 scm_from_int (keytable_->table_[i].tokcode_),
215 tail = SCM_CDRLOC (*tail);
222 Lily_lexer::lookup_identifier_symbol (SCM sym)
224 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
226 SCM var = ly_module_lookup (scm_car (s), sym);
227 if (var != SCM_BOOL_F)
228 return scm_variable_ref (var);
231 return SCM_UNDEFINED;
235 Lily_lexer::lookup_identifier (string name)
237 return lookup_identifier_symbol (ly_symbol2scm (name.c_str ()));
241 Lily_lexer::start_main_input ()
243 yy_flex_debug = get_program_option ("debug-lexer");
244 parser_->set_yydebug (get_program_option ("debug-parser"));
246 new_input (main_input_name_, sources_);
248 scm_module_define (scm_car (scopes_),
249 ly_symbol2scm ("input-file-name"),
250 ly_string2scm (main_input_name_));
254 Lily_lexer::new_input (string str, string d, Sources *ss)
256 Includable_lexer::new_input (str, d, ss);
260 Lily_lexer::new_input (string str, Sources *ss)
262 if (is_main_input_ && be_safe_global)
264 LexerError (_ ("include files are not allowed in safe mode").c_str ());
268 Includable_lexer::new_input (str, ss);
271 // PATH is either a single symbol (or string) or a list of symbols
272 // giving the path to a nested property. A symbol is treated the same
273 // as a list of length 1.
275 Lily_lexer::set_identifier (SCM path, SCM val)
278 if (scm_is_string (path))
279 sym = scm_string_to_symbol (path);
280 else if (scm_is_pair (path))
282 sym = scm_car (path);
283 path = scm_cdr (path);
286 if (scm_is_symbol (sym))
288 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
290 string symstr = ly_symbol2string (sym);
291 warning (_f ("identifier name is a keyword: `%s'", symstr.c_str ()));
294 SCM mod = scm_car (scopes_);
296 if (scm_is_pair (path))
298 SCM prev = ly_module_lookup (mod, sym);
299 if (prev != SCM_BOOL_F)
300 val = nested_property_alist (scm_variable_ref (prev), path, val);
302 scm_module_define (mod, sym, val);
305 programming_error ("identifier is not a symbol");
309 Lily_lexer::LexerError (char const *s)
311 if (include_stack_.empty ())
312 message (_f ("error at EOF: %s", s) + "\n");
316 Input spot (*lexloc_);
322 Lily_lexer::escaped_char (char c) const
339 Lily_lexer::here_input () const
341 return Input (*lexloc_);
345 Lily_lexer::prepare_for_next_token ()
347 last_input_ = here_input ();
351 Since we don't create the buffer state from the bytes directly, we
352 don't know about the location of the lexer. Add this as a
355 Lily_lexer::add_lexed_char (int count)
357 char const *start = here_str0 ();
358 lexloc_->set (get_source_file (),
359 start, start + count);
360 char_count_stack_.back () += count;
363 #include "ly-smobs.icc"
365 IMPLEMENT_SMOBS (Lily_lexer);
366 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
367 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
370 Lily_lexer::mark_smob (SCM s)
372 ASSERT_LIVE_IS_ALLOWED ();
374 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
376 scm_gc_mark (lexer->chordmodifier_tab_);
378 scm_gc_mark (lexer->parser_->self_scm ());
379 scm_gc_mark (lexer->pitchname_tab_stack_);
380 scm_gc_mark (lexer->start_module_);
381 return lexer->scopes_;
385 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state*)
387 Lily_lexer *lexer = Lily_lexer::unsmob (s);
389 scm_puts ("#<Lily_lexer ", port);
390 scm_display (lexer->scopes_, port);
391 scm_puts (" >", port);
396 Lily_lexer::is_clean () const
398 return include_stack_.empty ();