2 my-lily-lexer.cc -- implement My_lily_lexer
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 #include "lily-proto.hh"
13 #include "scm-hash.hh"
14 #include "interval.hh"
15 #include "lily-guile.hh"
18 #include "my-lily-lexer.hh"
20 #include "source-file.hh"
24 #include "ly-module.hh"
27 static Keyword_ent the_key_tab[] = {
29 {"addquote", ADDQUOTE},
31 {"alternative", ALTERNATIVE},
34 {"bookpaper", BOOKPAPER},
38 {"consists", CONSISTS},
39 {"consistsend", CONSISTSEND},
44 {"description", DESCRIPTION},
46 {"grobdescriptions", GROBDESCRIPTIONS},
50 {"lyricsto", LYRICSTO},
56 {"newlyrics", NEWLYRICS},
60 {"override", OVERRIDE},
64 {"relative", RELATIVE},
70 {"sequential", SEQUENTIAL},
72 {"simultaneous", SIMULTANEOUS},
78 {"transpose", TRANSPOSE},
79 {"transposition", TRANSPOSITION},
87 My_lily_lexer::My_lily_lexer (Sources *sources)
90 keytable_ = new Keyword_table (the_key_tab);
92 chordmodifier_tab_ = scm_make_vector (scm_int2num (1), SCM_EOL);
93 pitchname_tab_stack_ = SCM_EOL;
97 main_input_b_ = false;
99 add_scope (ly_make_anonymous_module (false));
102 My_lily_lexer::My_lily_lexer (My_lily_lexer const &src)
103 : Includable_lexer ()
105 keytable_ = src.keytable_;
106 encoding_ = src.encoding_;
107 chordmodifier_tab_ = src.chordmodifier_tab_;
108 pitchname_tab_stack_ = src.pitchname_tab_stack_;
109 sources_ = src.sources_;
110 scopes_ = src.scopes_;
111 error_level_ = src.error_level_;
112 main_input_b_ = src.main_input_b_;
116 My_lily_lexer::encoding () const
123 My_lily_lexer::add_scope (SCM module)
125 ly_reexport_module (scm_current_module ());
126 scm_set_current_module (module);
127 for (SCM s = scopes_; ly_c_pair_p (s); s = ly_cdr (s))
129 ly_use_module (module, ly_car (s));
131 scopes_ = scm_cons (module, scopes_);
135 My_lily_lexer::remove_scope ()
137 SCM sc = ly_car (scopes_);
138 scopes_ = ly_cdr (scopes_);
139 scm_set_current_module (ly_car (scopes_));
146 My_lily_lexer::lookup_keyword (String s)
148 return keytable_->lookup (s.to_str0 ());
152 My_lily_lexer::lookup_identifier_symbol (SCM sym)
154 for (SCM s = scopes_; ly_c_pair_p (s); s = ly_cdr (s))
156 SCM var = ly_module_lookup (ly_car (s), sym);
157 if (var != SCM_BOOL_F)
158 return scm_variable_ref (var);
161 return SCM_UNDEFINED;
165 My_lily_lexer::lookup_identifier (String name)
167 return lookup_identifier_symbol ( ly_symbol2scm (name.to_str0 ()));
171 My_lily_lexer::start_main_input ()
173 // yy_flex_debug = 1;
174 new_input (main_input_name_, sources_);
175 /* Do not allow \include in --safe-mode */
176 allow_includes_b_ = allow_includes_b_ && ! safe_global_b;
178 scm_module_define (ly_car (scopes_),
179 ly_symbol2scm ("input-file-name"),
180 scm_makfrom0str (main_input_name_.to_str0 ()));
184 My_lily_lexer::set_identifier (SCM name, SCM s)
187 if (ly_c_string_p (name))
188 sym = scm_string_to_symbol (name);
190 if (ly_c_symbol_p (sym))
192 if (lookup_keyword (ly_symbol2string (sym)) >= 0)
194 warning (_f ("Identifier name is a keyword: `%s'", SCM_SYMBOL_CHARS (sym)));
197 SCM mod = ly_car (scopes_);
199 scm_module_define (mod, sym, s);
204 programming_error ("Identifier is not a symbol.");
208 My_lily_lexer::~My_lily_lexer ()
216 My_lily_lexer::LexerError (char const *s)
218 if (include_stack_.is_empty ())
219 progress_indication (_f ("error at EOF: %s", s) + String ("\n"));
223 Input spot (get_source_file (), here_str0 ());
229 My_lily_lexer::escaped_char (char c) const
247 My_lily_lexer::here_input () const
249 Source_file * f= get_source_file ();
250 return Input (f, (char*)here_str0 ());
254 My_lily_lexer::prepare_for_next_token ()
256 last_input_ = here_input ();
260 My_lily_lexer::set_encoding (String s)
263 encoding_ = ly_symbol2scm (s.to_str0 ());