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},
78 {"relative", RELATIVE},
84 {"sequential", SEQUENTIAL},
86 {"simultaneous", SIMULTANEOUS},
96 Lily_lexer::Lily_lexer (Sources *sources, Lily_parser *parser)
99 keytable_ = new Keyword_table (the_key_tab);
100 chordmodifier_tab_ = SCM_EOL;
101 pitchname_tab_stack_ = SCM_EOL;
105 is_main_input_ = false;
106 start_module_ = SCM_EOL;
107 chord_repetition_ = Chord_repetition ();
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_;
133 SCM scopes = SCM_EOL;
135 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
137 SCM newmod = ly_make_module (false);
138 ly_module_copy (newmod, scm_car (s));
139 *tail = scm_cons (newmod, SCM_EOL);
140 tail = SCM_CDRLOC (*tail);
144 push_note_state (scm_c_make_hash_table (0));
147 Lily_lexer::~Lily_lexer ()
153 Lily_lexer::add_scope (SCM module)
155 ly_reexport_module (scm_current_module ());
156 if (!scm_is_pair (scopes_))
157 start_module_ = scm_current_module ();
159 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
160 ly_use_module (module, scm_car (s));
161 scopes_ = scm_cons (module, scopes_);
163 set_current_scope ();
166 Lily_lexer::has_scope () const
168 return scm_is_pair (scopes_);
172 Lily_lexer::remove_scope ()
174 SCM sc = scm_car (scopes_);
175 scopes_ = scm_cdr (scopes_);
176 set_current_scope ();
181 Lily_lexer::set_current_scope ()
183 SCM old = scm_current_module ();
185 if (scm_is_pair (scopes_))
186 scm_set_current_module (scm_car (scopes_));
188 scm_set_current_module (start_module_);
194 Lily_lexer::lookup_keyword (string s)
196 return keytable_->lookup (s.c_str ());
200 Lily_lexer::keyword_list () const
207 for (vsize i = 0; i < keytable_->table_.size (); i++)
209 *tail = scm_acons (scm_from_locale_string (keytable_->table_[i].name_),
210 scm_from_int (keytable_->table_[i].tokcode_),
213 tail = SCM_CDRLOC (*tail);
220 Lily_lexer::lookup_identifier_symbol (SCM sym)
222 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
224 SCM var = ly_module_lookup (scm_car (s), sym);
225 if (var != SCM_BOOL_F)
226 return scm_variable_ref (var);
229 return SCM_UNDEFINED;
233 Lily_lexer::lookup_identifier (string name)
235 return lookup_identifier_symbol (ly_symbol2scm (name.c_str ()));
239 Lily_lexer::start_main_input ()
241 yy_flex_debug = get_program_option ("debug-lexer");
242 parser_->set_yydebug (get_program_option ("debug-parser"));
244 new_input (main_input_name_, sources_);
246 scm_module_define (scm_car (scopes_),
247 ly_symbol2scm ("input-file-name"),
248 ly_string2scm (main_input_name_));
252 Lily_lexer::new_input (string str, string d, Sources *ss)
254 Includable_lexer::new_input (str, d, ss);
258 Lily_lexer::new_input (string str, Sources *ss)
260 if (is_main_input_ && be_safe_global)
262 LexerError (_ ("include files are not allowed in safe mode").c_str ());
266 Includable_lexer::new_input (str, ss);
269 // PATH is either a single symbol (or string) or a list of symbols
270 // giving the path to a nested property. A symbol is treated the same
271 // as a list of length 1.
273 Lily_lexer::set_identifier (SCM path, SCM val)
276 if (scm_is_string (path))
277 sym = scm_string_to_symbol (path);
278 else if (scm_is_pair (path))
280 sym = scm_car (path);
281 path = scm_cdr (path);
284 if (scm_is_symbol (sym))
286 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
288 string symstr = ly_symbol2string (sym);
289 warning (_f ("identifier name is a keyword: `%s'", symstr.c_str ()));
292 SCM mod = scm_car (scopes_);
294 if (scm_is_pair (path))
296 SCM prev = ly_module_lookup (mod, sym);
297 if (prev != SCM_BOOL_F)
298 val = nested_property_alist (scm_variable_ref (prev), path, val);
300 scm_module_define (mod, sym, val);
303 programming_error ("identifier is not a symbol");
307 Lily_lexer::LexerError (char const *s)
309 if (include_stack_.empty ())
310 non_fatal_error (s, _f ("%s:EOF", s));
314 Input spot (*lexloc_);
320 Lily_lexer::LexerWarning (char const *s)
322 if (include_stack_.empty ())
323 warning (s, _f ("%s:EOF", s));
326 Input spot (*lexloc_);
332 Lily_lexer::escaped_char (char c) const
349 Lily_lexer::here_input () const
351 return Input (*lexloc_);
355 Lily_lexer::prepare_for_next_token ()
357 last_input_ = here_input ();
361 Since we don't create the buffer state from the bytes directly, we
362 don't know about the location of the lexer. Add this as a
365 Lily_lexer::add_lexed_char (int count)
367 char const *start = here_str0 ();
368 lexloc_->set (get_source_file (),
369 start, start + count);
370 char_count_stack_.back () += count;
373 #include "ly-smobs.icc"
375 IMPLEMENT_SMOBS (Lily_lexer);
376 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
377 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
380 Lily_lexer::mark_smob (SCM s)
382 ASSERT_LIVE_IS_ALLOWED ();
384 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
386 scm_gc_mark (lexer->chordmodifier_tab_);
388 scm_gc_mark (lexer->parser_->self_scm ());
389 scm_gc_mark (lexer->pitchname_tab_stack_);
390 scm_gc_mark (lexer->start_module_);
391 return lexer->scopes_;
395 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state *)
397 Lily_lexer *lexer = Lily_lexer::unsmob (s);
399 scm_puts ("#<Lily_lexer ", port);
400 scm_display (lexer->scopes_, port);
401 scm_puts (" >", port);
406 Lily_lexer::is_clean () const
408 return include_stack_.empty ();