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