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)
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_;
110 start_module_ = SCM_EOL;
112 error_level_ = src.error_level_;
113 is_main_input_ = src.is_main_input_;
119 SCM scopes = SCM_EOL;
121 for (SCM s = src.scopes_; scm_is_pair (s); s = scm_cdr (s))
123 SCM newmod = ly_make_anonymous_module (false);
124 ly_module_copy (newmod, scm_car (s));
125 *tail = scm_cons (newmod, SCM_EOL);
126 tail = SCM_CDRLOC (*tail);
130 push_note_state (scm_c_make_hash_table (0));
133 Lily_lexer::~Lily_lexer ()
139 Lily_lexer::add_scope (SCM module)
141 ly_reexport_module (scm_current_module ());
142 if (!scm_is_pair (scopes_))
143 start_module_ = scm_current_module ();
145 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
146 ly_use_module (module, scm_car (s));
147 scopes_ = scm_cons (module, scopes_);
149 set_current_scope ();
152 Lily_lexer::has_scope () const
154 return scm_is_pair (scopes_);
158 Lily_lexer::remove_scope ()
160 SCM sc = scm_car (scopes_);
161 scopes_ = scm_cdr (scopes_);
162 set_current_scope ();
167 Lily_lexer::set_current_scope ()
169 SCM old = scm_current_module ();
171 if (scm_is_pair (scopes_))
172 scm_set_current_module (scm_car (scopes_));
174 scm_set_current_module (start_module_);
180 Lily_lexer::lookup_keyword (string s)
182 return keytable_->lookup (s.c_str ());
186 Lily_lexer::lookup_identifier_symbol (SCM sym)
188 for (SCM s = scopes_; scm_is_pair (s); s = scm_cdr (s))
190 SCM var = ly_module_lookup (scm_car (s), sym);
191 if (var != SCM_BOOL_F)
192 return scm_variable_ref (var);
195 return SCM_UNDEFINED;
199 Lily_lexer::lookup_identifier (string name)
201 return lookup_identifier_symbol (ly_symbol2scm (name.c_str ()));
205 Lily_lexer::start_main_input ()
207 yy_flex_debug = get_program_option ("debug-lexer");
208 parser_->set_yydebug (get_program_option ("debug-parser"));
211 new_input (main_input_name_, sources_);
213 /* Do not allow \include in --safe-mode */
214 allow_includes_b_ = allow_includes_b_ && !be_safe_global;
216 scm_module_define (scm_car (scopes_),
217 ly_symbol2scm ("input-file-name"),
218 scm_makfrom0str (main_input_name_.c_str ()));
222 Lily_lexer::set_identifier (SCM name, SCM s)
225 if (scm_is_string (name))
226 sym = scm_string_to_symbol (name);
228 if (scm_is_symbol (sym))
230 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
232 string symstr = ly_symbol2string (sym);
233 warning (_f ("identifier name is a keyword: `%s'", symstr.c_str ()));
236 SCM mod = scm_car (scopes_);
238 scm_module_define (mod, sym, s);
241 programming_error ("identifier is not a symbol");
245 Lily_lexer::LexerError (char const *s)
247 if (include_stack_.empty ())
248 message (_f ("error at EOF: %s", s) + "\n");
252 Input spot (*lexloc);
258 Lily_lexer::escaped_char (char c) const
275 Lily_lexer::here_input () const
277 return Input (*lexloc);
281 Lily_lexer::prepare_for_next_token ()
283 last_input_ = here_input ();
287 Since we don't create the buffer state from the bytes directly, we
288 don't know about the location of the lexer. Add this as a
291 Lily_lexer::add_lexed_char (int count)
293 char const *start = here_str0 ();
294 lexloc->set (get_source_file (),
295 start, start + count);
296 char_count_stack_.back () += count;
299 #include "ly-smobs.icc"
301 IMPLEMENT_SMOBS (Lily_lexer);
302 IMPLEMENT_TYPE_P (Lily_lexer, "ly:lily-lexer?");
303 IMPLEMENT_DEFAULT_EQUAL_P (Lily_lexer);
306 Lily_lexer::mark_smob (SCM s)
308 ASSERT_LIVE_IS_ALLOWED();
310 Lily_lexer *lexer = (Lily_lexer *) SCM_CELL_WORD_1 (s);
312 scm_gc_mark (lexer->chordmodifier_tab_);
314 scm_gc_mark (lexer->parser_->self_scm ());
315 scm_gc_mark (lexer->pitchname_tab_stack_);
316 scm_gc_mark (lexer->start_module_);
317 return lexer->scopes_;
321 Lily_lexer::print_smob (SCM s, SCM port, scm_print_state*)
323 Lily_lexer *lexer = Lily_lexer::unsmob (s);
325 scm_puts ("#<Lily_lexer ", port);
326 scm_display (lexer->scopes_, port);
327 scm_puts (" >", port);