2 lily-lexer.cc -- implement Lily_lexer
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "lily-lexer.hh"
15 #include "scm-hash.hh"
16 #include "interval.hh"
20 #include "source-file.hh"
24 static Keyword_ent the_key_tab[]
27 {"addlyrics", ADDLYRICS},
28 {"addquote", ADDQUOTE},
30 {"alternative", ALTERNATIVE},
34 {"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},
63 {"override", OVERRIDE},
66 {"relative", RELATIVE},
72 {"sequential", SEQUENTIAL},
74 {"simultaneous", SIMULTANEOUS},
79 {"transpose", TRANSPOSE},
80 {"transposition", TRANSPOSITION},
87 Lily_lexer::Lily_lexer (Sources *sources)
89 keytable_ = new Keyword_table (the_key_tab);
90 chordmodifier_tab_ = SCM_EOL;
91 pitchname_tab_stack_ = SCM_EOL;
95 is_main_input_ = false;
96 start_module_ = SCM_EOL;
99 add_scope (ly_make_anonymous_module (false));
100 push_note_state (scm_c_make_hash_table (0));
101 chordmodifier_tab_ = scm_make_vector (scm_from_int (1), SCM_EOL);
104 Lily_lexer::Lily_lexer (Lily_lexer const &src)
105 : 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 ();
154 Lily_lexer::remove_scope ()
156 SCM sc = scm_car (scopes_);
157 scopes_ = scm_cdr (scopes_);
158 set_current_scope ();
163 Lily_lexer::set_current_scope ()
165 SCM old = scm_current_module ();
167 if (scm_is_pair (scopes_))
168 scm_set_current_module (scm_car (scopes_));
170 scm_set_current_module (start_module_);
176 Lily_lexer::lookup_keyword (String s)
178 return keytable_->lookup (s.to_str0 ());
182 Lily_lexer::lookup_identifier_symbol (SCM sym)
184 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
186 SCM var = ly_module_lookup (scm_car (s), sym);
187 if (var != SCM_BOOL_F)
188 return scm_variable_ref (var);
191 return SCM_UNDEFINED;
195 Lily_lexer::lookup_identifier (String name)
197 return lookup_identifier_symbol (ly_symbol2scm (name.to_str0 ()));
201 Lily_lexer::start_main_input ()
203 // yy_flex_debug = 1;
204 new_input (main_input_name_, sources_);
206 /* Do not allow \include in --safe-mode */
207 allow_includes_b_ = allow_includes_b_ && !be_safe_global;
209 scm_module_define (scm_car (scopes_),
210 ly_symbol2scm ("input-file-name"),
211 scm_makfrom0str (main_input_name_.to_str0 ()));
215 Lily_lexer::set_identifier (SCM name, SCM s)
218 if (scm_is_string (name))
219 sym = scm_string_to_symbol (name);
221 if (scm_is_symbol (sym))
223 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
225 String symstr = ly_symbol2string (sym);
226 warning (_f ("identifier name is a keyword: `%s'", symstr.to_str0 ()));
229 SCM mod = scm_car (scopes_);
231 scm_module_define (mod, sym, s);
234 programming_error ("identifier is not a symbol");
238 Lily_lexer::LexerError (char const *s)
240 if (include_stack_.is_empty ())
241 message (_f ("error at EOF: %s", s) + "\n");
245 Input spot (*lexloc);
251 Lily_lexer::escaped_char (char c) const
268 Lily_lexer::here_input () const
270 return Input (*lexloc);
274 Lily_lexer::prepare_for_next_token ()
276 last_input_ = here_input ();
280 Since we don't create the buffer state from the bytes directly, we
281 don't know about the location of the lexer. Add this as a
284 Lily_lexer::add_lexed_char (int count)
286 char const *start = here_str0 ();
287 lexloc->set (get_source_file (),
288 start, start + count);
289 char_count_stack_.top () += count;
292 #include "ly-smobs.icc"
294 IMPLEMENT_SMOBS (Lily_lexer);
295 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
296 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
299 Lily_lexer::mark_smob (SCM s)
301 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
303 scm_gc_mark (lexer->chordmodifier_tab_);
304 scm_gc_mark (lexer->pitchname_tab_stack_);
305 scm_gc_mark (lexer->start_module_);
306 return lexer->scopes_;
310 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state*)
312 Lily_lexer *lexer = Lily_lexer::unsmob (s);
314 scm_puts ("#<Lily_lexer ", port);
315 scm_display (lexer->scopes_, port);
316 scm_puts (" >", port);