2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2011 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},
61 {"grobdescriptions", GROBDESCRIPTIONS},
65 {"lyricmode", LYRICMODE},
67 {"lyricsto", LYRICSTO},
70 {"markuplines", MARKUPLINES},
74 {"notemode", NOTEMODE},
76 {"override", OVERRIDE},
83 {"sequential", SEQUENTIAL},
85 {"simultaneous", SIMULTANEOUS},
95 Lily_lexer::Lily_lexer (Sources *sources, Lily_parser *parser)
98 keytable_ = new Keyword_table (the_key_tab);
99 chordmodifier_tab_ = SCM_EOL;
100 pitchname_tab_stack_ = SCM_EOL;
104 is_main_input_ = false;
105 start_module_ = SCM_EOL;
106 chord_repetition_ = Chord_repetition ();
107 extra_tokens_ = SCM_EOL;
110 add_scope (ly_make_module (false));
111 push_note_state (scm_c_make_hash_table (0));
112 chordmodifier_tab_ = scm_make_vector (scm_from_int (1), SCM_EOL);
115 Lily_lexer::Lily_lexer (Lily_lexer const &src, Lily_parser *parser)
116 : Includable_lexer ()
119 keytable_ = (src.keytable_) ? new Keyword_table (*src.keytable_) : 0;
120 chordmodifier_tab_ = src.chordmodifier_tab_;
121 pitchname_tab_stack_ = src.pitchname_tab_stack_;
122 sources_ = src.sources_;
123 start_module_ = SCM_EOL;
124 chord_repetition_ = src.chord_repetition_;
126 error_level_ = src.error_level_;
127 is_main_input_ = src.is_main_input_;
130 extra_tokens_ = SCM_EOL;
134 SCM scopes = SCM_EOL;
136 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
138 SCM newmod = ly_make_module (false);
139 ly_module_copy (newmod, scm_car (s));
140 *tail = scm_cons (newmod, SCM_EOL);
141 tail = SCM_CDRLOC (*tail);
145 push_note_state (scm_c_make_hash_table (0));
148 Lily_lexer::~Lily_lexer ()
154 Lily_lexer::add_scope (SCM module)
156 ly_reexport_module (scm_current_module ());
157 if (!scm_is_pair (scopes_))
158 start_module_ = scm_current_module ();
160 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
161 ly_use_module (module, scm_car (s));
162 scopes_ = scm_cons (module, scopes_);
164 set_current_scope ();
167 Lily_lexer::has_scope () const
169 return scm_is_pair (scopes_);
173 Lily_lexer::remove_scope ()
175 SCM sc = scm_car (scopes_);
176 scopes_ = scm_cdr (scopes_);
177 set_current_scope ();
182 Lily_lexer::set_current_scope ()
184 SCM old = scm_current_module ();
186 if (scm_is_pair (scopes_))
187 scm_set_current_module (scm_car (scopes_));
189 scm_set_current_module (start_module_);
195 Lily_lexer::lookup_keyword (string s)
197 return keytable_->lookup (s.c_str ());
201 Lily_lexer::keyword_list () const
208 for (vsize i = 0; i < keytable_->table_.size (); i++)
210 *tail = scm_acons (scm_from_locale_string (keytable_->table_[i].name_),
211 scm_from_int (keytable_->table_[i].tokcode_),
214 tail = SCM_CDRLOC (*tail);
221 Lily_lexer::lookup_identifier_symbol (SCM sym)
223 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
225 SCM var = ly_module_lookup (scm_car (s), sym);
226 if (var != SCM_BOOL_F)
227 return scm_variable_ref (var);
230 return SCM_UNDEFINED;
234 Lily_lexer::lookup_identifier (string name)
236 return lookup_identifier_symbol (ly_symbol2scm (name.c_str ()));
240 Lily_lexer::start_main_input ()
242 yy_flex_debug = get_program_option ("debug-lexer");
243 parser_->set_yydebug (get_program_option ("debug-parser"));
245 new_input (main_input_name_, sources_);
247 scm_module_define (scm_car (scopes_),
248 ly_symbol2scm ("input-file-name"),
249 ly_string2scm (main_input_name_));
253 Lily_lexer::new_input (string str, string d, Sources *ss)
255 Includable_lexer::new_input (str, d, ss);
259 Lily_lexer::new_input (string str, Sources *ss)
261 if (is_main_input_ && be_safe_global)
263 LexerError (_ ("include files are not allowed in safe mode").c_str ());
267 Includable_lexer::new_input (str, ss);
270 // PATH is either a single symbol (or string) or a list of symbols
271 // giving the path to a nested property. A symbol is treated the same
272 // as a list of length 1.
274 Lily_lexer::set_identifier (SCM path, SCM val)
277 if (scm_is_string (path))
278 sym = scm_string_to_symbol (path);
279 else if (scm_is_pair (path))
281 sym = scm_car (path);
282 path = scm_cdr (path);
285 if (scm_is_symbol (sym))
287 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
289 string symstr = ly_symbol2string (sym);
290 warning (_f ("identifier name is a keyword: `%s'", symstr.c_str ()));
293 SCM mod = scm_car (scopes_);
295 if (scm_is_pair (path))
297 SCM prev = ly_module_lookup (mod, sym);
298 if (prev != SCM_BOOL_F)
299 val = nested_property_alist (scm_variable_ref (prev), path, val);
301 scm_module_define (mod, sym, val);
304 programming_error ("identifier is not a symbol");
308 Lily_lexer::LexerError (char const *s)
310 if (include_stack_.empty ())
311 non_fatal_error (s, _f ("%s:EOF", s));
315 Input spot (*lexloc_);
321 Lily_lexer::LexerWarning (char const *s)
323 if (include_stack_.empty ())
324 warning (s, _f ("%s:EOF", s));
327 Input spot (*lexloc_);
333 Lily_lexer::escaped_char (char c) const
350 Lily_lexer::here_input () const
352 return Input (*lexloc_);
356 Lily_lexer::prepare_for_next_token ()
358 last_input_ = here_input ();
362 Since we don't create the buffer state from the bytes directly, we
363 don't know about the location of the lexer. Add this as a
366 Lily_lexer::add_lexed_char (int count)
368 char const *start = here_str0 ();
369 lexloc_->set (get_source_file (),
370 start, start + count);
371 char_count_stack_.back () += count;
374 #include "ly-smobs.icc"
376 IMPLEMENT_SMOBS (Lily_lexer);
377 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
378 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
381 Lily_lexer::mark_smob (SCM s)
383 ASSERT_LIVE_IS_ALLOWED ();
385 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
387 scm_gc_mark (lexer->chordmodifier_tab_);
389 scm_gc_mark (lexer->parser_->self_scm ());
390 scm_gc_mark (lexer->pitchname_tab_stack_);
391 scm_gc_mark (lexer->start_module_);
392 scm_gc_mark (lexer->extra_tokens_);
393 return lexer->scopes_;
397 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state *)
399 Lily_lexer *lexer = Lily_lexer::unsmob (s);
401 scm_puts ("#<Lily_lexer ", port);
402 scm_display (lexer->scopes_, port);
403 scm_puts (" >", port);
408 Lily_lexer::is_clean () const
410 return include_stack_.empty ();