lily/my-lily-lexer.cc

   1 /*
   2   my-lily-lexer.cc -- implement My_lily_lexer
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include <strstream.h>
  10 #include <ctype.h>
  11 #include "notename-table.hh"
  12 #include "interval.hh"
  13 #include "identifier.hh"
  14 #include "lily-guile.hh"
  15 #include "parser.hh"
  16 #include "keyword.hh"
  17 #include "my-lily-lexer.hh"
  18 #include "debug.hh"
  19 #include "source-file.hh"
  20 #include "main.hh"
  21 #include "scope.hh"
  22 #include "input.hh"
  23 #include "moment.hh"
  24
  25 static Keyword_ent the_key_tab[]={
  26   {"autochange", AUTOCHANGE},
  27   {"spanrequest", SPANREQUEST},
  28   {"simultaneous", SIMULTANEOUS},
  29   {"sequential", SEQUENTIAL},
  30   {"accepts", ACCEPTS},
  31   {"alternative", ALTERNATIVE},
  32   {"bar", BAR},
  33   {"breathe", BREATHE},
  34   {"chordmodifiers", CHORDMODIFIERS},
  35   {"chords", CHORDS},
  36   {"clef", CLEF},
  37   {"cm", CM_T},
  38   {"consists", CONSISTS},
  39   {"consistsend", CONSISTSEND},
  40   {"context", CONTEXT},
  41   {"duration", DURATION},
  42   {"font", FONT},
  43   {"grace", GRACE},
  44   {"header", HEADER},
  45   {"in", IN_T},
  46   {"lyrics", LYRICS},
  47   {"key", KEY},
  48   {"keysignature", KEYSIGNATURE},
  49   {"mark", MARK},
  50   {"musicalpitch", MUSICAL_PITCH},
  51   {"time", TIME_T},
  52   {"times", TIMES},
  53   {"midi", MIDI},
  54   {"mm", MM_T},
  55   {"name", NAME},
  56   {"notenames", NOTENAMES},
  57   {"notes", NOTES},
  58   {"partial", PARTIAL},
  59   {"paper", PAPER},
  60   {"penalty", PENALTY},
  61   {"property", PROPERTY},
  62   {"pt", PT_T},
  63   {"relative", RELATIVE},
  64   {"remove", REMOVE},
  65   {"repeat", REPEAT},
  66   {"repetitions", REPETITIONS},
  67   {"addlyrics", ADDLYRICS},
  68   {"score", SCORE},
  69   {"script", SCRIPT},
  70   {"skip", SKIP},
  71   {"textscript", TEXTSCRIPT},
  72   {"tempo", TEMPO},
  73   {"translator", TRANSLATOR},
  74   {"transpose", TRANSPOSE},
  75   {"type", TYPE},
  76   {0,0}
  77 };
  78
  79 My_lily_lexer::My_lily_lexer()
  80 {
  81   keytable_p_ = new Keyword_table (the_key_tab);
  82   toplevel_scope_p_ = new Scope;
  83   scope_l_arr_.push (toplevel_scope_p_);
  84   errorlevel_i_ = 0;
  85   note_tab_p_ = new Notename_table;
  86   chordmodifier_tab_p_ = new Notename_table;
  87   main_input_b_ = false;
  88 }
  89
  90 int
  91 My_lily_lexer::lookup_keyword (String s)
  92 {
  93   return keytable_p_->lookup (s.ch_C ());
  94 }
  95
  96 Identifier*
  97 My_lily_lexer::lookup_identifier (String s)
  98 {
  99   SCM sym = ly_symbol2scm (s.ch_C());
 100
 101   for (int i = scope_l_arr_.size (); i--; )
 102     if (scope_l_arr_[i]->elem_b (sym))
 103       return scope_l_arr_[i]->elem(sym);
 104   return 0;
 105 }
 106
 107 void
 108 My_lily_lexer::start_main_input ()
 109 {
 110   if (flower_dstream && !flower_dstream->silent_b ("InitDeclarations") && flower_dstream)
 111     print_declarations (true);
 112   if (flower_dstream && !flower_dstream->silent_b ("InitLexer") && flower_dstream)
 113     set_debug (1);
 114
 115
 116   new_input (main_input_str_, source_global_l);
 117   if (safe_global_b)
 118     allow_includes_b_ = false;
 119
 120   print_declarations(true);
 121 }
 122
 123 void
 124 My_lily_lexer::set_identifier (String name_str, Identifier* i, bool )
 125 {
 126   Identifier *old =0;
 127   if (scope_l_arr_.top ()->elem_b (name_str))
 128     old = scope_l_arr_.top ()->elem(name_str);
 129
 130
 131   if  (old)
 132     {
 133 #if 0
 134       if (unique_b)
 135         old->warning(_f ("redeclaration of `\\%s'", name_str));
 136 #endif
 137       delete old;
 138     }
 139   if (lookup_keyword (name_str) >= 0)
 140     {
 141       warning (  _f ("Identifier name is a keyword: `%s'", name_str));
 142     }
 143
 144   scope_l_arr_.top ()->elem (name_str) = i;
 145 }
 146
 147 My_lily_lexer::~My_lily_lexer()
 148 {
 149   delete chordmodifier_tab_p_;
 150   delete keytable_p_;
 151   delete toplevel_scope_p_ ;
 152   delete note_tab_p_;
 153 }
 154
 155 void
 156 My_lily_lexer::print_declarations (bool ) const
 157 {
 158   for (int i=scope_l_arr_.size (); i--; )
 159     {
 160       DEBUG_OUT << "Scope no. " << i << '\n';
 161       scope_l_arr_[i]->print ();
 162     }
 163 }
 164
 165 void
 166 My_lily_lexer::LexerError (char const *s)
 167 {
 168   if (include_stack_.empty())
 169     {
 170       progress_indication (_f ("error at EOF: %s", s)+ String ("\n"));
 171     }
 172   else
 173     {
 174       errorlevel_i_ |= 1;
 175       Input spot (source_file_l(),here_ch_C());
 176       spot.error (s);
 177     }
 178 }
 179
 180 Musical_pitch
 181 My_lily_lexer::lookup_notename (String s)
 182 {
 183   return note_tab_p_->get_pitch (s);
 184 }
 185
 186 Musical_pitch
 187 My_lily_lexer::lookup_chordmodifier (String s)
 188 {
 189   return chordmodifier_tab_p_->get_pitch (s);
 190 }
 191
 192 bool
 193 My_lily_lexer::notename_b (String s) const
 194 {
 195   return note_tab_p_->elem_b (s);
 196 }
 197
 198 void
 199 My_lily_lexer::set_notename_table (Notename_table *p)
 200 {
 201   delete note_tab_p_;
 202   note_tab_p_ = p;
 203 }
 204
 205 bool
 206 My_lily_lexer::chordmodifier_b (String s) const
 207 {
 208   return chordmodifier_tab_p_->elem_b (s);
 209 }
 210
 211 void
 212 My_lily_lexer::set_chordmodifier_table (Notename_table *p)
 213 {
 214   delete chordmodifier_tab_p_;
 215   chordmodifier_tab_p_ = p;
 216 }
 217
 218 char
 219 My_lily_lexer::escaped_char(char c) const
 220 {
 221   switch(c)
 222     {
 223     case 'n':
 224       return '\n';
 225     case 't':
 226       return '\t';
 227
 228     case '\'':
 229     case '\"':
 230     case '\\':
 231       return c;
 232     }
 233   return 0;
 234 }
 235
 236 Input
 237 My_lily_lexer::here_input () const
 238 {
 239   Source_file * f_l= source_file_l ();
 240   return Input (f_l, (char*)here_ch_C ());
 241 }