Update variant.yy to newest interface.

* examples/variant.yy: Define lex_symbol.
	Adjust.

ChangeLog

@@ -1,3 +1,9 @@
+2008-11-15  Akim Demaille  <demaille@gostai.com>
+
+	Update variant.yy to newest interface.
+	* examples/variant.yy: Define lex_symbol.
+	Adjust.
+
 2008-11-15  Akim Demaille  <demaille@gostai.com>
 
 	Don't use locations in variant.yy.

examples/variant.yy

@@ -1,9 +1,8 @@
-/* Test file for C++ parsers using variants.
-   Based on an example by Michiel De Wilde <mdewilde.agilent@gmail.com>. */
 %debug
 %skeleton "lalr1.cc"
 %defines
 %define variant
+%define lex_symbol
 
 %code requires // *.hh
 {
@@ -20,7 +19,7 @@ typedef std::list<std::string> strings_type;
 #include <sstream>
 
   // Prototype of the yylex function providing subsequent tokens.
-  static yy::parser::token_type yylex(yy::parser::semantic_type* yylval);
+  static yy::parser::symbol_type yylex ();
 
   // Printing a list of strings.
   // Koening look up will look into std, since that's an std::list.
@@ -81,35 +80,23 @@ item:
 // END_OF_FILE
 
 static
-yy::parser::token_type
+yy::parser::symbol_type
-yylex (yy::parser::semantic_type* yylval)
+yylex ()
 {
-  static int stage = 0;
+  static int stage = -1;
-  yy::parser::token_type result;
+  switch (++stage)
-
-  switch (stage)
   {
     case 0:
-      yylval->build (std::string ("I have three numbers for you."));
+      return yy::parser::make_TEXT ("I have three numbers for you.");
-      result = yy::parser::token::TEXT;
-      break;
     case 1:
     case 2:
     case 3:
-      yylval->build (stage);
+      return yy::parser::make_NUMBER (stage);
-      result = yy::parser::token::NUMBER;
-      break;
     case 4:
-      yylval->build (std::string ("And that's all!"));
+      return yy::parser::make_TEXT ("And that's all!");
-      result = yy::parser::token::TEXT;
-      break;
     default:
-      result = yy::parser::token::END_OF_FILE;
+      return yy::parser::make_END_OF_FILE ();
-      break;
   }
-
-  stage++;
-  return result;
 }
 
 // Mandatory error function
@@ -120,7 +107,7 @@ yy::parser::error (const std::string& message)
 }
 
 int
-main (int argc, char *argv[])
+main ()
 {
   yy::parser p;
   p.set_debug_level (!!getenv ("YYDEBUG"));