2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 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[]
43 {"addlyrics", ADDLYRICS},
45 {"alternative", ALTERNATIVE},
47 {"bookpart", BOOKPART},
49 {"chordmode", CHORDMODE},
51 {"consists", CONSISTS},
54 {"defaultchild", DEFAULTCHILD},
56 {"description", DESCRIPTION},
57 {"drummode", DRUMMODE},
59 {"figuremode", FIGUREMODE},
63 {"lyricmode", LYRICMODE},
65 {"lyricsto", LYRICSTO},
67 {"markuplist", MARKUPLIST},
71 {"notemode", NOTEMODE},
72 {"override", OVERRIDE},
79 {"sequential", SEQUENTIAL},
81 {"simultaneous", SIMULTANEOUS},
89 Lily_lexer::Lily_lexer (Sources *sources, Lily_parser *parser)
92 keytable_ = new Keyword_table (the_key_tab);
93 chordmodifier_tab_ = SCM_EOL;
94 pitchname_tab_stack_ = SCM_EOL;
98 is_main_input_ = false;
99 start_module_ = SCM_EOL;
100 extra_tokens_ = SCM_EOL;
103 add_scope (ly_make_module (false));
104 push_note_state (SCM_EOL);
105 chordmodifier_tab_ = scm_make_vector (scm_from_int (1), SCM_EOL);
108 Lily_lexer::Lily_lexer (Lily_lexer const &src, Lily_parser *parser)
109 : Includable_lexer ()
112 keytable_ = (src.keytable_) ? new Keyword_table (*src.keytable_) : 0;
113 chordmodifier_tab_ = src.chordmodifier_tab_;
114 pitchname_tab_stack_ = src.pitchname_tab_stack_;
115 sources_ = src.sources_;
116 start_module_ = SCM_EOL;
119 is_main_input_ = src.is_main_input_;
122 extra_tokens_ = SCM_EOL;
126 SCM scopes = SCM_EOL;
128 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
130 SCM newmod = ly_make_module (false);
131 ly_module_copy (newmod, scm_car (s));
132 *tail = scm_cons (newmod, SCM_EOL);
133 tail = SCM_CDRLOC (*tail);
137 push_note_state (SCM_EOL);
140 Lily_lexer::~Lily_lexer ()
146 Lily_lexer::add_scope (SCM module)
148 ly_reexport_module (scm_current_module ());
149 if (!scm_is_pair (scopes_))
150 start_module_ = scm_current_module ();
152 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
153 ly_use_module (module, scm_car (s));
154 scopes_ = scm_cons (module, scopes_);
156 set_current_scope ();
159 Lily_lexer::has_scope () const
161 return scm_is_pair (scopes_);
165 Lily_lexer::remove_scope ()
167 SCM sc = scm_car (scopes_);
168 scopes_ = scm_cdr (scopes_);
169 set_current_scope ();
174 Lily_lexer::set_current_scope ()
176 SCM old = scm_current_module ();
178 if (scm_is_pair (scopes_))
179 scm_set_current_module (scm_car (scopes_));
181 scm_set_current_module (start_module_);
187 Lily_lexer::lookup_keyword (string s)
189 return keytable_->lookup (s.c_str ());
193 Lily_lexer::keyword_list () const
200 for (vsize i = 0; i < keytable_->table_.size (); i++)
202 *tail = scm_acons (scm_from_locale_string (keytable_->table_[i].name_),
203 scm_from_int (keytable_->table_[i].tokcode_),
206 tail = SCM_CDRLOC (*tail);
213 Lily_lexer::lookup_identifier_symbol (SCM sym)
215 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
217 SCM var = ly_module_lookup (scm_car (s), sym);
218 if (var != SCM_BOOL_F)
219 return scm_variable_ref (var);
222 return SCM_UNDEFINED;
226 Lily_lexer::lookup_identifier (string name)
228 return lookup_identifier_symbol (ly_symbol2scm (name.c_str ()));
232 Lily_lexer::start_main_input ()
234 yy_flex_debug = get_program_option ("debug-lexer");
235 parser_->set_yydebug (get_program_option ("debug-parser"));
237 new_input (main_input_name_, sources_);
239 scm_module_define (scm_car (scopes_),
240 ly_symbol2scm ("input-file-name"),
241 ly_string2scm (main_input_name_));
245 Lily_lexer::new_input (string str, string d, Sources *ss)
247 Includable_lexer::new_input (str, d, ss);
251 Lily_lexer::new_input (string str, Sources *ss)
253 if (is_main_input_ && be_safe_global)
255 LexerError (_ ("include files are not allowed in safe mode").c_str ());
259 Includable_lexer::new_input (str, ss);
262 // PATH is either a single symbol (or string) or a list of symbols
263 // giving the path to a nested property. A symbol is treated the same
264 // as a list of length 1.
266 Lily_lexer::set_identifier (SCM path, SCM val)
269 if (scm_is_string (path))
270 sym = scm_string_to_symbol (path);
271 else if (scm_is_pair (path))
273 sym = scm_car (path);
274 path = scm_cdr (path);
277 if (scm_is_symbol (sym))
279 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
281 string symstr = ly_symbol2string (sym);
282 warning (_f ("identifier name is a keyword: `%s'", symstr.c_str ()));
285 SCM mod = scm_car (scopes_);
287 if (scm_is_pair (path))
289 SCM prev = ly_module_lookup (mod, sym);
290 if (prev != SCM_BOOL_F)
291 val = nested_property_alist (scm_variable_ref (prev), path, val);
293 scm_module_define (mod, sym, val);
296 programming_error ("identifier is not a symbol");
300 Lily_lexer::LexerError (char const *s)
302 if (include_stack_.empty ())
303 non_fatal_error (s, _f ("%s:EOF", s));
307 Input spot (*lexloc_);
313 Lily_lexer::LexerWarning (char const *s)
315 if (include_stack_.empty ())
316 warning (s, _f ("%s:EOF", s));
319 Input spot (*lexloc_);
325 Lily_lexer::escaped_char (char c) const
342 Lily_lexer::here_input () const
344 return Input (*lexloc_);
348 Lily_lexer::prepare_for_next_token ()
350 last_input_ = here_input ();
354 Since we don't create the buffer state from the bytes directly, we
355 don't know about the location of the lexer. Add this as a
358 Lily_lexer::add_lexed_char (int count)
360 char const *start = here_str0 ();
361 lexloc_->set (get_source_file (),
362 start, start + count);
363 char_count_stack_.back () += count;
366 #include "ly-smobs.icc"
368 IMPLEMENT_SMOBS (Lily_lexer);
369 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
370 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
373 Lily_lexer::mark_smob (SCM s)
375 ASSERT_LIVE_IS_ALLOWED (s);
377 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
379 scm_gc_mark (lexer->chordmodifier_tab_);
381 scm_gc_mark (lexer->parser_->self_scm ());
382 scm_gc_mark (lexer->pitchname_tab_stack_);
383 scm_gc_mark (lexer->start_module_);
384 scm_gc_mark (lexer->extra_tokens_);
385 return lexer->scopes_;
389 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state *)
391 Lily_lexer *lexer = Lily_lexer::unsmob (s);
393 scm_puts ("#<Lily_lexer ", port);
394 scm_display (lexer->scopes_, port);
395 scm_puts (" >", port);
400 Lily_lexer::is_clean () const
402 return include_stack_.empty ();