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[] = {
25 {"addquote", ADDQUOTE},
26 {"addlyrics", ADDLYRICS},
28 {"alternative", ALTERNATIVE},
33 {"chordmode", CHORDMODE},
35 {"consists", CONSISTS},
39 {"drummode", DRUMMODE},
41 {"description", DESCRIPTION},
43 {"figuremode", FIGUREMODE},
44 {"grobdescriptions", GROBDESCRIPTIONS},
48 {"lyricmode", LYRICMODE},
49 {"lyricsto", LYRICSTO},
56 {"objectid", OBJECTID},
57 {"notemode", NOTEMODE},
60 {"override", OVERRIDE},
63 {"relative", RELATIVE},
69 {"sequential", SEQUENTIAL},
71 {"simultaneous", SIMULTANEOUS},
77 {"transpose", TRANSPOSE},
78 {"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_));
161 Lily_lexer::lookup_keyword (String s)
163 return keytable_->lookup (s.to_str0 ());
167 Lily_lexer::lookup_identifier_symbol (SCM sym)
169 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
171 SCM var = ly_module_lookup (scm_car (s), sym);
172 if (var != SCM_BOOL_F)
173 return scm_variable_ref (var);
176 return SCM_UNDEFINED;
180 Lily_lexer::lookup_identifier (String name)
182 return lookup_identifier_symbol (ly_symbol2scm (name.to_str0 ()));
186 Lily_lexer::start_main_input ()
188 // yy_flex_debug = 1;
189 new_input (main_input_name_, sources_);
191 /* Do not allow \include in --safe-mode */
192 allow_includes_b_ = allow_includes_b_ && !be_safe_global;
194 scm_module_define (scm_car (scopes_),
195 ly_symbol2scm ("input-file-name"),
196 scm_makfrom0str (main_input_name_.to_str0 ()));
200 Lily_lexer::set_identifier (SCM name, SCM s)
203 if (scm_is_string (name))
204 sym = scm_string_to_symbol (name);
206 if (scm_is_symbol (sym))
208 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
210 String symstr = ly_symbol2string (sym);
211 warning (_f ("Identifier name is a keyword: `%s'", symstr.to_str0()));
214 SCM mod = scm_car (scopes_);
216 scm_module_define (mod, sym, s);
220 programming_error ("Identifier is not a symbol.");
225 Lily_lexer::LexerError (char const *s)
227 if (include_stack_.is_empty ())
228 progress_indication (_f ("error at EOF: %s", s) + String ("\n"));
232 Input spot (*lexloc);
238 Lily_lexer::escaped_char (char c) const
255 Lily_lexer::here_input () const
257 return Input(*lexloc);
261 Lily_lexer::prepare_for_next_token ()
263 last_input_ = here_input ();
267 Since we don't create the buffer state from the bytes directly, we
268 don't know about the location of the lexer. Add this as a
271 Lily_lexer::add_lexed_char (int count)
273 lexloc->source_file_ = get_source_file ();
274 lexloc->start_ = here_str0 ();
275 lexloc->end_ = lexloc->start_ + count;
276 char_count_stack_.top () += count;
280 #include "ly-smobs.icc"
282 IMPLEMENT_SMOBS (Lily_lexer);
283 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
284 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
287 Lily_lexer::mark_smob (SCM s)
289 Lily_lexer *lexer = (Lily_lexer*) SCM_CELL_WORD_1 (s);
291 scm_gc_mark (lexer->chordmodifier_tab_);
292 scm_gc_mark (lexer->pitchname_tab_stack_);
293 return lexer->scopes_;
297 Lily_lexer::print_smob (SCM, SCM port, scm_print_state*)
299 scm_puts ("#<Lily_lexer ", port);
300 scm_puts (" >", port);