2 lily-lexer.cc -- implement Lily_lexer
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "lily-lexer.hh"
14 #include "scm-hash.hh"
15 #include "interval.hh"
19 #include "source-file.hh"
23 static Keyword_ent the_key_tab[]
26 {"addlyrics", ADDLYRICS},
27 {"addquote", ADDQUOTE},
29 {"alternative", ALTERNATIVE},
33 {"chordmode", CHORDMODE},
36 {"consists", CONSISTS},
40 {"description", DESCRIPTION},
41 {"drummode", DRUMMODE},
43 {"figuremode", FIGUREMODE},
45 {"grobdescriptions", GROBDESCRIPTIONS},
49 {"lyricmode", LYRICMODE},
51 {"lyricsto", LYRICSTO},
57 {"notemode", NOTEMODE},
58 {"objectid", OBJECTID},
61 {"override", OVERRIDE},
64 {"relative", RELATIVE},
70 {"sequential", SEQUENTIAL},
72 {"simultaneous", SIMULTANEOUS},
78 {"transpose", TRANSPOSE},
79 {"transposition", TRANSPOSITION},
86 Lily_lexer::Lily_lexer (Sources *sources)
88 keytable_ = new Keyword_table (the_key_tab);
89 chordmodifier_tab_ = SCM_EOL;
90 pitchname_tab_stack_ = SCM_EOL;
94 is_main_input_ = false;
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_int2num (1), SCM_EOL);
103 Lily_lexer::Lily_lexer (Lily_lexer const &src)
104 : Includable_lexer ()
106 keytable_ = (src.keytable_) ? new Keyword_table (*src.keytable_) : 0;
107 chordmodifier_tab_ = src.chordmodifier_tab_;
108 pitchname_tab_stack_ = src.pitchname_tab_stack_;
109 sources_ = src.sources_;
111 error_level_ = src.error_level_;
112 is_main_input_ = src.is_main_input_;
118 SCM scopes = SCM_EOL;
120 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
122 SCM newmod = ly_make_anonymous_module (false);
123 ly_module_copy (newmod, scm_car (s));
124 *tail = scm_cons (newmod, SCM_EOL);
125 tail = SCM_CDRLOC (*tail);
129 push_note_state (scm_c_make_hash_table (0));
132 Lily_lexer::~Lily_lexer ()
138 Lily_lexer::add_scope (SCM module)
140 ly_reexport_module (scm_current_module ());
141 scm_set_current_module (module);
142 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
144 ly_use_module (module, scm_car (s));
146 scopes_ = scm_cons (module, scopes_);
150 Lily_lexer::remove_scope ()
152 SCM sc = scm_car (scopes_);
153 scopes_ = scm_cdr (scopes_);
154 scm_set_current_module (scm_car (scopes_));
160 Lily_lexer::lookup_keyword (String s)
162 return keytable_->lookup (s.to_str0 ());
166 Lily_lexer::lookup_identifier_symbol (SCM sym)
168 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
170 SCM var = ly_module_lookup (scm_car (s), sym);
171 if (var != SCM_BOOL_F)
172 return scm_variable_ref (var);
175 return SCM_UNDEFINED;
179 Lily_lexer::lookup_identifier (String name)
181 return lookup_identifier_symbol (ly_symbol2scm (name.to_str0 ()));
185 Lily_lexer::start_main_input ()
187 // yy_flex_debug = 1;
188 new_input (main_input_name_, sources_);
190 /* Do not allow \include in --safe-mode */
191 allow_includes_b_ = allow_includes_b_ && !be_safe_global;
193 scm_module_define (scm_car (scopes_),
194 ly_symbol2scm ("input-file-name"),
195 scm_makfrom0str (main_input_name_.to_str0 ()));
199 Lily_lexer::set_identifier (SCM name, SCM s)
202 if (scm_is_string (name))
203 sym = scm_string_to_symbol (name);
205 if (scm_is_symbol (sym))
207 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
209 String symstr = ly_symbol2string (sym);
210 warning (_f ("identifier name is a keyword: `%s'", symstr.to_str0 ()));
213 SCM mod = scm_car (scopes_);
215 scm_module_define (mod, sym, s);
218 programming_error ("identifier is not a symbol");
222 Lily_lexer::LexerError (char const *s)
224 if (include_stack_.is_empty ())
225 message (_f ("error at EOF: %s", s) + "\n");
229 Input spot (*lexloc);
235 Lily_lexer::escaped_char (char c) const
252 Lily_lexer::here_input () const
254 return Input(*lexloc);
258 Lily_lexer::prepare_for_next_token ()
260 last_input_ = here_input ();
264 Since we don't create the buffer state from the bytes directly, we
265 don't know about the location of the lexer. Add this as a
268 Lily_lexer::add_lexed_char (int count)
270 lexloc->source_file_ = get_source_file ();
271 lexloc->start_ = here_str0 ();
272 lexloc->end_ = lexloc->start_ + count;
273 char_count_stack_.top () += count;
276 #include "ly-smobs.icc"
278 IMPLEMENT_SMOBS (Lily_lexer);
279 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
280 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
283 Lily_lexer::mark_smob (SCM s)
285 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
287 scm_gc_mark (lexer->chordmodifier_tab_);
288 scm_gc_mark (lexer->pitchname_tab_stack_);
289 return lexer->scopes_;
293 Lily_lexer::print_smob (SCM, SCM port, scm_print_state*)
295 scm_puts ("#<Lily_lexer ", port);
296 scm_puts (" >", port);