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 "parser.hh"
  15 #include "keyword.hh"
  16 #include "my-lily-lexer.hh"
  17 #include "debug.hh"
  18 #include "source-file.hh"
  19 #include "main.hh"
  20 #include "scope.hh"
  21 #include "input.hh"
  22
  23 static Keyword_ent the_key_tab[]={
  24   {"spanrequest", SPANREQUEST},
  25   {"simultaneous", SIMULTANEOUS},
  26   {"sequential", SEQUENTIAL},
  27   {"accepts", ACCEPTS},
  28   {"alternative", ALTERNATIVE},
  29   {"bar", BAR},
  30   {"breathe", BREATHE},
  31   {"cadenza", CADENZA},
  32   {"chordmodifiers", CHORDMODIFIERS},
  33   {"chords", CHORDS},
  34   {"clef", CLEF},
  35   {"cm", CM_T},
  36   {"consists", CONSISTS},
  37   {"consistsend", CONSISTSEND},
  38   {"context", CONTEXT},
  39   {"duration", DURATION},
  40   {"font", FONT},
  41   {"grace", GRACE},
  42   {"header", HEADER},
  43   {"in", IN_T},
  44   {"lyrics", LYRICS},
  45   {"key", KEY},
  46   {"keysignature", KEYSIGNATURE},
  47   {"mark", MARK},
  48   {"musicalpitch", MUSICAL_PITCH},
  49   {"time", TIME_T},
  50   {"times", TIMES},
  51   {"midi", MIDI},
  52   {"mm", MM_T},
  53   {"name", NAME},
  54   {"notenames", NOTENAMES},
  55   {"notes" , NOTES},
  56   {"partial", PARTIAL},
  57   {"paper", PAPER},
  58   {"penalty", PENALTY},
  59   {"property", PROPERTY},
  60   {"pt", PT_T},
  61   {"relative", RELATIVE},
  62   {"remove", REMOVE},
  63   {"repeat", REPEAT},
  64   {"repetitions", REPETITIONS},
  65   {"addlyrics", ADDLYRICS},
  66   {"scm", SCM_T},
  67   {"scmfile", SCMFILE},
  68   {"score", SCORE},
  69   {"script", SCRIPT},
  70   {"shape", SHAPE},
  71   {"skip", SKIP},
  72   {"textscript", TEXTSCRIPT},
  73   {"tempo", TEMPO},
  74   {"translator", TRANSLATOR},
  75   {"transpose", TRANSPOSE},
  76   {"type", TYPE},
  77   {"version", VERSION},
  78   {0,0}
  79 };
  80
  81 My_lily_lexer::My_lily_lexer()
  82 {
  83   keytable_p_ = new Keyword_table (the_key_tab);
  84   toplevel_scope_p_ = new Scope;
  85   scope_l_arr_.push (toplevel_scope_p_);
  86   errorlevel_i_ = 0;
  87   note_tab_p_ = new Notename_table;
  88   chordmodifier_tab_p_ = new Notename_table;
  89   main_input_b_ = false;
  90 }
  91
  92 int
  93 My_lily_lexer::lookup_keyword (String s)
  94 {
  95   return keytable_p_->lookup (s.ch_C ());
  96 }
  97
  98 Identifier*
  99 My_lily_lexer::lookup_identifier (String s)
 100 {
 101   SCM sym = ly_symbol (s.ch_C());
 102
 103   for (int i = scope_l_arr_.size (); i--; )
 104     if (scope_l_arr_[i]->elem_b (sym))
 105       return scope_l_arr_[i]->elem(sym);
 106   return 0;
 107 }
 108
 109 void
 110 My_lily_lexer::start_main_input ()
 111 {
 112   if (!monitor->silent_b ("InitDeclarations") && check_debug)
 113     print_declarations (true);
 114   if (!monitor->silent_b ("InitLexer") && check_debug)
 115     set_debug (1);
 116
 117
 118   new_input (main_input_str_, source_global_l);
 119   if (safe_global_b)
 120     allow_includes_b_ = false;
 121
 122   print_declarations(true);
 123 }
 124
 125 void
 126 My_lily_lexer::set_identifier (String name_str, Identifier* i, bool )
 127 {
 128   Identifier *old =0;
 129   if (scope_l_arr_.top ()->elem_b (name_str))
 130     old = scope_l_arr_.top ()->elem(name_str);
 131
 132
 133   if  (old)
 134     {
 135 #if 0
 136       if (unique_b)
 137         old->warning(_f ("redeclaration of `\\%s\'", name_str));
 138 #endif
 139       delete old;
 140     }
 141   if (lookup_keyword (name_str) >= 0)
 142     {
 143       warning (  _f ("Identifier name is a keyword (`%s')", name_str));
 144     }
 145
 146   scope_l_arr_.top ()->elem (name_str) = i;
 147 }
 148
 149 My_lily_lexer::~My_lily_lexer()
 150 {
 151   delete chordmodifier_tab_p_;
 152   delete keytable_p_;
 153   delete toplevel_scope_p_ ;
 154   delete note_tab_p_;
 155 }
 156
 157 void
 158 My_lily_lexer::print_declarations (bool ) const
 159 {
 160   for (int i=scope_l_arr_.size (); i--; )
 161     {
 162       DOUT << "Scope no. " << i << '\n';
 163       scope_l_arr_[i]->print ();
 164     }
 165 }
 166
 167 void
 168 My_lily_lexer::LexerError (char const *s)
 169 {
 170   if (include_stack_.empty())
 171     {
 172       *mlog << _f ("error at EOF: %s", s) << endl;
 173     }
 174   else
 175     {
 176       errorlevel_i_ |= 1;
 177       Input spot (source_file_l(),here_ch_C());
 178       spot.error (s);
 179     }
 180 }
 181
 182 Musical_pitch
 183 My_lily_lexer::lookup_notename (String s)
 184 {
 185   return (*note_tab_p_)[s];
 186 }
 187
 188 Musical_pitch
 189 My_lily_lexer::lookup_chordmodifier (String s)
 190 {
 191   return (*chordmodifier_tab_p_)[s];
 192 }
 193
 194 bool
 195 My_lily_lexer::notename_b (String s) const
 196 {
 197   return note_tab_p_->elem_b (s);
 198 }
 199
 200 void
 201 My_lily_lexer::set_notename_table (Notename_table *p)
 202 {
 203   delete note_tab_p_;
 204   note_tab_p_ = p;
 205 }
 206
 207 bool
 208 My_lily_lexer::chordmodifier_b (String s) const
 209 {
 210   return chordmodifier_tab_p_->elem_b (s);
 211 }
 212
 213 void
 214 My_lily_lexer::set_chordmodifier_table (Notename_table *p)
 215 {
 216   delete chordmodifier_tab_p_;
 217   chordmodifier_tab_p_ = p;
 218 }
 219
 220 char
 221 My_lily_lexer::escaped_char(char c) const
 222 {
 223   switch(c)
 224     {
 225     case 'n':
 226       return '\n';
 227     case 't':
 228       return '\t';
 229
 230     case '\'':
 231     case '\"':
 232     case '\\':
 233       return c;
 234     }
 235   return 0;
 236 }
 237
 238 Input
 239 My_lily_lexer::here_input () const
 240 {
 241   Source_file * f_l= source_file_l();
 242   return Input (f_l, here_ch_C());
 243 }