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--2000 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   {"commandspanrequest", COMMANDSPANREQUEST},
  29   {"simultaneous", SIMULTANEOUS},
  30   {"sequential", SEQUENTIAL},
  31   {"accepts", ACCEPTS},
  32   {"alternative", ALTERNATIVE},
  33   {"bar", BAR},
  34   {"breathe", BREATHE},
  35   {"char", CHAR_T},
  36   {"chordmodifiers", CHORDMODIFIERS},
  37   {"chords", CHORDS},
  38   {"clef", CLEF},
  39   {"cm", CM_T},
  40   {"consists", CONSISTS},
  41   {"consistsend", CONSISTSEND},
  42   {"context", CONTEXT},
  43   {"duration", DURATION},
  44   {"font", FONT},
  45   {"grace", GRACE},
  46   {"header", HEADER},
  47   {"in", IN_T},
  48   {"lyrics", LYRICS},
  49   {"key", KEY},
  50   {"keysignature", KEYSIGNATURE},
  51   {"mark", MARK},
  52   {"musicalpitch", MUSICAL_PITCH},
  53   {"time", TIME_T},
  54   {"times", TIMES},
  55   {"midi", MIDI},
  56   {"mm", MM_T},
  57   {"name", NAME},
  58   {"notenames", NOTENAMES},
  59   {"notes", NOTES},
  60   {"outputproperty", OUTPUTPROPERTY},
  61   {"partial", PARTIAL},
  62   {"paper", PAPER},
  63   {"penalty", PENALTY},
  64   {"property", PROPERTY},
  65   {"pt", PT_T},
  66   {"relative", RELATIVE},
  67   {"remove", REMOVE},
  68   {"repeat", REPEAT},
  69   {"repetitions", REPETITIONS},
  70   {"addlyrics", ADDLYRICS},
  71   {"score", SCORE},
  72   {"script", SCRIPT},
  73   {"skip", SKIP},
  74   {"textscript", TEXTSCRIPT},
  75   {"tempo", TEMPO},
  76   {"translator", TRANSLATOR},
  77   {"transpose", TRANSPOSE},
  78   {"type", TYPE},
  79   {0,0}
  80 };
  81
  82 My_lily_lexer::My_lily_lexer()
  83 {
  84   keytable_p_ = new Keyword_table (the_key_tab);
  85   toplevel_scope_p_ = new Scope;
  86   scope_l_arr_.push (toplevel_scope_p_);
  87   errorlevel_i_ = 0;
  88   note_tab_p_ = new Notename_table;
  89   chordmodifier_tab_p_ = new Notename_table;
  90   main_input_b_ = false;
  91 }
  92
  93 int
  94 My_lily_lexer::lookup_keyword (String s)
  95 {
  96   return keytable_p_->lookup (s.ch_C ());
  97 }
  98
  99 Identifier*
 100 My_lily_lexer::lookup_identifier (String s)
 101 {
 102   SCM sym = ly_symbol2scm (s.ch_C());
 103
 104   for (int i = scope_l_arr_.size (); i--; )
 105     if (scope_l_arr_[i]->elem_b (sym))
 106       return scope_l_arr_[i]->elem(sym);
 107   return 0;
 108 }
 109
 110 void
 111 My_lily_lexer::start_main_input ()
 112 {
 113   if (flower_dstream && !flower_dstream->silent_b ("InitDeclarations") && flower_dstream)
 114     print_declarations (true);
 115   if (flower_dstream && !flower_dstream->silent_b ("InitLexer") && flower_dstream)
 116     set_debug (1);
 117
 118
 119   new_input (main_input_str_, source_global_l);
 120   allow_includes_b_ = allow_includes_b_ &&  !(safe_global_b);
 121
 122
 123   print_declarations(true);
 124 }
 125
 126 void
 127 My_lily_lexer::set_identifier (String name_str, Identifier* i, bool )
 128 {
 129   Identifier *old =0;
 130   if (scope_l_arr_.top ()->elem_b (name_str))
 131     old = scope_l_arr_.top ()->elem(name_str);
 132
 133
 134   if  (old)
 135     {
 136 #if 0
 137       if (unique_b)
 138         old->warning(_f ("redeclaration of `\\%s'", name_str));
 139 #endif
 140       delete old;
 141     }
 142   if (lookup_keyword (name_str) >= 0)
 143     {
 144       warning (  _f ("Identifier name is a keyword: `%s'", name_str));
 145     }
 146
 147   scope_l_arr_.top ()->elem (name_str) = i;
 148 }
 149
 150 My_lily_lexer::~My_lily_lexer()
 151 {
 152   delete chordmodifier_tab_p_;
 153   delete keytable_p_;
 154   delete toplevel_scope_p_ ;
 155   delete note_tab_p_;
 156 }
 157
 158 void
 159 My_lily_lexer::print_declarations (bool ) const
 160 {
 161   for (int i=scope_l_arr_.size (); i--; )
 162     {
 163       DEBUG_OUT << "Scope no. " << i << '\n';
 164       scope_l_arr_[i]->print ();
 165     }
 166 }
 167
 168 void
 169 My_lily_lexer::LexerError (char const *s)
 170 {
 171   if (include_stack_.empty())
 172     {
 173       progress_indication (_f ("error at EOF: %s", s)+ String ("\n"));
 174     }
 175   else
 176     {
 177       errorlevel_i_ |= 1;
 178       Input spot (source_file_l(),here_ch_C());
 179       spot.error (s);
 180     }
 181 }
 182
 183 Musical_pitch
 184 My_lily_lexer::lookup_notename (String s)
 185 {
 186   return note_tab_p_->get_pitch (s);
 187 }
 188
 189 Musical_pitch
 190 My_lily_lexer::lookup_chordmodifier (String s)
 191 {
 192   return chordmodifier_tab_p_->get_pitch (s);
 193 }
 194
 195
 196 void
 197 My_lily_lexer::set_notename_table (Notename_table *p)
 198 {
 199   delete note_tab_p_;
 200   note_tab_p_ = p;
 201 }
 202
 203
 204
 205 void
 206 My_lily_lexer::set_chordmodifier_table (Notename_table *p)
 207 {
 208   delete chordmodifier_tab_p_;
 209   chordmodifier_tab_p_ = p;
 210 }
 211
 212 char
 213 My_lily_lexer::escaped_char(char c) const
 214 {
 215   switch(c)
 216     {
 217     case 'n':
 218       return '\n';
 219     case 't':
 220       return '\t';
 221
 222     case '\'':
 223     case '\"':
 224     case '\\':
 225       return c;
 226     }
 227   return 0;
 228 }
 229
 230 Input
 231 My_lily_lexer::here_input () const
 232 {
 233   Source_file * f_l= source_file_l ();
 234   return Input (f_l, (char*)here_ch_C ());
 235 }