src/mylexer.cc

   1 #include <strstream.h>
   2 #include "interval.hh"
   3 #include "identparent.hh"
   4 #include "associter.hh"
   5 #include "lexer.hh"
   6 #include "parser.hh"
   7 #include "keyword.hh"
   8 #include "assoc.hh"
   9 #include "lexer.hh"
  10 #include "debug.hh"
  11 #include "notename.hh"
  12 #include "sourcefile.hh"
  13 #include "parseconstruct.hh"
  14
  15 static Keyword_ent the_key_tab[]={
  16     "bar", BAR,
  17     "cadenza", CADENZA,
  18     "clef", CLEF,
  19     "cm", CM_T,
  20     "command", COMMAND,
  21     "commands", COMMANDS,
  22     "duration", DURATIONCOMMAND,
  23     "geometric", GEOMETRIC,
  24     "goto", GOTO,
  25     "in", IN_T,
  26     "key", KEY,
  27
  28     "meter", METER,
  29     "mm", MM_T,
  30     "multivoice", MULTIVOICE,
  31     "octave", OCTAVECOMMAND,
  32     "output", OUTPUT,
  33     "partial", PARTIAL,
  34     "paper", PAPER,
  35     "plet", PLET,
  36     "pt", PT_T,
  37     "score", SCORE,
  38     "script", SCRIPT,
  39     "skip", SKIP,
  40     "staff", STAFF,
  41     "start", START_T,
  42     "stem", STEM,
  43     "table", TABLE,
  44     "symboltables", SYMBOLTABLES,
  45     "notenames", NOTENAMES,
  46     "texid", TEXID,
  47     "textstyle", TEXTSTYLE,
  48     "unitspace", UNITSPACE,
  49     "voice", VOICE,
  50     "voices", VOICES,
  51     "width", WIDTH,
  52     "music", MUSIC,
  53     "grouping", GROUPING,
  54     0,0
  55 };
  56
  57 int
  58 My_flex_lexer::ret_notename(int *p, String text, int octave_mod)
  59 {
  60     text.lower();
  61     char const* ch_c_l = here_ch_c_l();
  62     ch_c_l--;
  63     while ( ( *ch_c_l == ' ' ) || ( *ch_c_l == '\t' ) || ( *ch_c_l == '\n' ) )
  64         ch_c_l--;
  65     ch_c_l++;
  66
  67     lookup_notename(p[0], p[1], text);
  68     p[2] = octave_mod;
  69     mtor << "notename: "<< text <<eol;
  70     if (p[0] < 0) {
  71
  72         errorlevel_i_ |= 1;
  73         warning( String( "notename does not exist: " ) + YYText(), ch_c_l );
  74         p[0] = p[1] = 0;
  75     }
  76     return NOTENAME;
  77 }
  78
  79 My_flex_lexer::My_flex_lexer()
  80 {
  81     keytable = new Keyword_table(the_key_tab);
  82     the_id_tab = new Assoc<String, Identifier*>;
  83     defaulttab = 0;
  84     data_ch_c_l_ = 0;
  85     errorlevel_i_ = 0;
  86 }
  87
  88 int
  89 My_flex_lexer::lookup_keyword(String s)
  90 {
  91     return keytable->lookup(s);
  92 }
  93
  94 Identifier*
  95 My_flex_lexer::lookup_identifier(String s)
  96 {
  97     if (!the_id_tab->elt_query(s))
  98         return 0;
  99
 100     return (*the_id_tab)[s];
 101 }
 102
 103 char const*
 104 My_flex_lexer::here_ch_c_l()
 105 {
 106     return data_ch_c_l_ ? data_ch_c_l_ + yyin->tellg() : 0;
 107 }
 108
 109 void
 110 My_flex_lexer::add_identifier(Identifier*i)
 111 {
 112     delete lookup_identifier(i->name);
 113     (*the_id_tab)[i->name] = i;
 114 }
 115
 116 My_flex_lexer::~My_flex_lexer()
 117 {
 118     delete keytable;
 119     delete defaulttab;
 120     for (Assoc_iter<String,Identifier*> ai(*the_id_tab); ai.ok(); ai++) {
 121         mtor << "deleting: " << ai.key()<<'\n';
 122         delete ai.val();
 123     }
 124     delete the_id_tab;
 125 }
 126
 127 String
 128 My_flex_lexer::spot()const
 129 {
 130     return include_stack.top()->name +  ": " + String( lineno() );
 131 }
 132
 133 void
 134 My_flex_lexer::LexerError(const char *s)
 135 {
 136     if (lexer->include_stack.empty()) {
 137         *mlog << "error at EOF" << s << '\n';
 138     } else {
 139         char const* ch_c_l = here_ch_c_l();
 140         if ( ch_c_l ) {
 141             ch_c_l--;
 142             while ( ( *ch_c_l == ' ' ) || ( *ch_c_l == '\t' ) || ( *ch_c_l == '\n' ) )
 143                     ch_c_l--;
 144             ch_c_l++;
 145         }
 146         errorlevel_i_ |= 1;
 147         warning( s, ch_c_l );
 148     }
 149 }
 150
 151 // set the  new input to s, remember old file.
 152 void
 153 My_flex_lexer::new_input(String s)
 154 {
 155    if (!include_stack.empty()) {
 156         include_stack.top()->line = lineno();
 157              // should this be saved at all?
 158         include_stack.top()->defined_ch_c_l_ = defined_ch_c_l;
 159    }
 160
 161    Input_file *newin = new Input_file(s);
 162    include_stack.push(newin);
 163    switch_streams(newin->is);
 164    if ( newin->sourcefile_l_ )
 165        data_ch_c_l_ = newin->sourcefile_l_->ch_c_l();
 166    else
 167        data_ch_c_l_ = 0;
 168
 169    yylineno = 1;
 170 }
 171
 172 // pop the inputstack.
 173 bool
 174 My_flex_lexer::close_input()
 175 {
 176     Input_file *old = include_stack.pop();
 177      bool ok =  true;
 178     if (include_stack.empty()) {
 179         ok = false;
 180     } else {
 181         Input_file *i = include_stack.top();
 182         switch_streams(i->is);
 183         yylineno = i->line;
 184         defined_ch_c_l = i->defined_ch_c_l_;
 185     }
 186     delete old;
 187     return ok;
 188 }