2 lily-lexer.cc -- implement Lily_lexer
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "lily-lexer.hh"
15 #include "international.hh"
16 #include "interval.hh"
21 #include "scm-hash.hh"
22 #include "source-file.hh"
24 #include "program-option.hh"
25 #include "lily-parser.hh"
27 static Keyword_ent the_key_tab[]
30 {"addlyrics", ADDLYRICS},
32 {"alternative", ALTERNATIVE},
35 {"chordmode", CHORDMODE},
37 {"consists", CONSISTS},
40 {"defaultchild", DEFAULTCHILD},
42 {"description", DESCRIPTION},
43 {"drummode", DRUMMODE},
45 {"figuremode", FIGUREMODE},
47 {"grobdescriptions", GROBDESCRIPTIONS},
51 {"lyricmode", LYRICMODE},
53 {"lyricsto", LYRICSTO},
59 {"notemode", NOTEMODE},
60 {"objectid", OBJECTID},
62 {"override", OVERRIDE},
65 {"relative", RELATIVE},
71 {"sequential", SEQUENTIAL},
73 {"simultaneous", SIMULTANEOUS},
78 {"transpose", TRANSPOSE},
85 Lily_lexer::Lily_lexer (Sources *sources, Lily_parser *parser)
88 keytable_ = new Keyword_table (the_key_tab);
89 chordmodifier_tab_ = SCM_EOL;
90 pitchname_tab_stack_ = SCM_EOL;
94 is_main_input_ = false;
95 start_module_ = SCM_EOL;
98 add_scope (ly_make_anonymous_module (false));
99 push_note_state (scm_c_make_hash_table (0));
100 chordmodifier_tab_ = scm_make_vector (scm_from_int (1), SCM_EOL);
103 Lily_lexer::Lily_lexer (Lily_lexer const &src, Lily_parser *parser)
104 : Includable_lexer ()
107 keytable_ = (src.keytable_) ? new Keyword_table (*src.keytable_) : 0;
108 chordmodifier_tab_ = src.chordmodifier_tab_;
109 pitchname_tab_stack_ = src.pitchname_tab_stack_;
110 sources_ = src.sources_;
111 start_module_ = SCM_EOL;
113 error_level_ = src.error_level_;
114 is_main_input_ = src.is_main_input_;
120 SCM scopes = SCM_EOL;
122 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
124 SCM newmod = ly_make_anonymous_module (false);
125 ly_module_copy (newmod, scm_car (s));
126 *tail = scm_cons (newmod, SCM_EOL);
127 tail = SCM_CDRLOC (*tail);
131 push_note_state (scm_c_make_hash_table (0));
134 Lily_lexer::~Lily_lexer ()
140 Lily_lexer::add_scope (SCM module)
142 ly_reexport_module (scm_current_module ());
143 if (!scm_is_pair (scopes_))
144 start_module_ = scm_current_module ();
146 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
147 ly_use_module (module, scm_car (s));
148 scopes_ = scm_cons (module, scopes_);
150 set_current_scope ();
153 Lily_lexer::has_scope () const
155 return scm_is_pair (scopes_);
159 Lily_lexer::remove_scope ()
161 SCM sc = scm_car (scopes_);
162 scopes_ = scm_cdr (scopes_);
163 set_current_scope ();
168 Lily_lexer::set_current_scope ()
170 SCM old = scm_current_module ();
172 if (scm_is_pair (scopes_))
173 scm_set_current_module (scm_car (scopes_));
175 scm_set_current_module (start_module_);
181 Lily_lexer::lookup_keyword (string s)
183 return keytable_->lookup (s.c_str ());
187 Lily_lexer::keyword_list () const
194 for (vsize i = 0; i < keytable_->table_.size (); i++)
196 *tail = scm_acons (scm_from_locale_string (keytable_->table_[i].name_),
197 scm_from_int (keytable_->table_[i].tokcode_),
200 tail = SCM_CDRLOC(*tail);
207 Lily_lexer::lookup_identifier_symbol (SCM sym)
209 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
211 SCM var = ly_module_lookup (scm_car (s), sym);
212 if (var != SCM_BOOL_F)
213 return scm_variable_ref (var);
216 return SCM_UNDEFINED;
220 Lily_lexer::lookup_identifier (string name)
222 return lookup_identifier_symbol (ly_symbol2scm (name.c_str ()));
226 Lily_lexer::start_main_input ()
228 yy_flex_debug = get_program_option ("debug-lexer");
229 parser_->set_yydebug (get_program_option ("debug-parser"));
232 new_input (main_input_name_, sources_);
234 scm_module_define (scm_car (scopes_),
235 ly_symbol2scm ("input-file-name"),
236 ly_string2scm (main_input_name_));
240 Lily_lexer::new_input (string str, string d, Sources *ss)
242 Includable_lexer::new_input (str, d, ss);
246 Lily_lexer::new_input (string str, Sources *ss)
248 if (is_main_input_ && be_safe_global)
250 LexerError (_ ("include files are not allowed in safe mode").c_str ());
254 Includable_lexer::new_input (str, ss);
258 Lily_lexer::set_identifier (SCM name, SCM s)
261 if (scm_is_string (name))
262 sym = scm_string_to_symbol (name);
264 if (scm_is_symbol (sym))
266 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
268 string symstr = ly_symbol2string (sym);
269 warning (_f ("identifier name is a keyword: `%s'", symstr.c_str ()));
272 SCM mod = scm_car (scopes_);
274 scm_module_define (mod, sym, s);
277 programming_error ("identifier is not a symbol");
281 Lily_lexer::LexerError (char const *s)
283 if (include_stack_.empty ())
284 message (_f ("error at EOF: %s", s) + "\n");
288 Input spot (*lexloc);
294 Lily_lexer::escaped_char (char c) const
311 Lily_lexer::here_input () const
313 return Input (*lexloc);
317 Lily_lexer::prepare_for_next_token ()
319 last_input_ = here_input ();
323 Since we don't create the buffer state from the bytes directly, we
324 don't know about the location of the lexer. Add this as a
327 Lily_lexer::add_lexed_char (int count)
329 char const *start = here_str0 ();
330 lexloc->set (get_source_file (),
331 start, start + count);
332 char_count_stack_.back () += count;
335 #include "ly-smobs.icc"
337 IMPLEMENT_SMOBS (Lily_lexer);
338 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
339 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
342 Lily_lexer::mark_smob (SCM s)
344 ASSERT_LIVE_IS_ALLOWED();
346 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
348 scm_gc_mark (lexer->chordmodifier_tab_);
350 scm_gc_mark (lexer->parser_->self_scm ());
351 scm_gc_mark (lexer->pitchname_tab_stack_);
352 scm_gc_mark (lexer->start_module_);
353 return lexer->scopes_;
357 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state*)
359 Lily_lexer *lexer = Lily_lexer::unsmob (s);
361 scm_puts ("#<Lily_lexer ", port);
362 scm_display (lexer->scopes_, port);
363 scm_puts (" >", port);