maint: automate b4_copyright updates.

[bison.git] / examples / variant.yy

diff --git a/examples/variant.yy b/examples/variant.yy
index 74fb10920b4affaa35b794641835eeaa9b51ff3d..8471e6e8adc6ba033fd9ce6cbf0c6e8584f1c436 100644 (file)
--- a/examples/variant.yy
+++ b/examples/variant.yy
@@ -1,9 +1,10 @@
-/* Test file for C++ parsers using variants.
-   Based on an example by Michiel De Wilde <mdewilde.agilent@gmail.com>. */

 %debug
 %skeleton "lalr1.cc"
 %defines
 %debug
 %skeleton "lalr1.cc"
 %defines

+%define assert

 %define variant
 %define variant

+%define lex_symbol
+%locations

 
 %code requires // *.hh
 {
 
 %code requires // *.hh
 {


@@ -20,17 +21,17 @@ typedef std::list<std::string> strings_type;
 #include <sstream>
 
   // Prototype of the yylex function providing subsequent tokens.
 #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.
   namespace std
   {
     std::ostream&
 
   // Printing a list of strings.
   // Koening look up will look into std, since that's an std::list.
   namespace std
   {
     std::ostream&

-    operator<<(std::ostream& o, const strings_type& s)
+    operator<< (std::ostream& o, const strings_type& s)

     {
     {

-      std::copy(s.begin(), s.end(),
-                std::ostream_iterator<strings_type::value_type>(o, "\n"));
+      std::copy (s.begin (), s.end (),
+                 std::ostream_iterator<strings_type::value_type> (o, "\n"));

       return o;
     }
   }
       return o;
     }
   }


@@ -43,22 +44,23 @@ typedef std::list<std::string> strings_type;
   {
     std::ostringstream o;
     o << t;
   {
     std::ostringstream o;
     o << t;

-    return o.str();
+    return o.str ();

   }
 }
 
   }
 }
 

-%token <std::string> TEXT;
+%token <::std::string> TEXT;

 %token <int> NUMBER;
 %token <int> NUMBER;

-%printer { debug_stream () << $$; } <int> <std::string> <strings_type>;
+%printer { debug_stream () << $$; }
+   <int> <::std::string> <::std::list<std::string>>;

 %token END_OF_FILE 0;
 
 %token END_OF_FILE 0;
 

-%type <std::string> item;
-%type <strings_type> list;
+%type <::std::string> item;
+%type <::std::list<std::string>> list;

 
 %%
 
 result:
 
 %%
 
 result:

-  list { std::cout << $1 << std::endl; }
+  list  { std::cout << $1 << std::endl; }

 ;
 
 list:
 ;
 
 list:


@@ -81,51 +83,40 @@ item:
 // END_OF_FILE
 
 static
 // END_OF_FILE
 
 static

-yy::parser::token_type
-yylex (yy::parser::semantic_type* yylval)
+yy::parser::symbol_type
+yylex ()

 {
 {

-  static int stage = 0;
-  yy::parser::token_type result;
-
+  static int stage = -1;
+  ++stage;
+  yy::parser::location_type loc(0, stage + 1, stage + 1);

   switch (stage)
   {
     case 0:
   switch (stage)
   {
     case 0:

-      yylval->build (std::string ("I have three numbers for you."));
-      result = yy::parser::token::TEXT;
-      break;
+      return yy::parser::make_TEXT ("I have three numbers for you.", loc);

     case 1:
     case 2:
     case 3:
     case 1:
     case 2:
     case 3:

-      yylval->build (stage);
-      result = yy::parser::token::NUMBER;
-      break;
+      return yy::parser::make_NUMBER (stage, loc);

     case 4:
     case 4:

-      yylval->build (std::string ("And that's all!"));
-      result = yy::parser::token::TEXT;
-      break;
+      return yy::parser::make_TEXT ("And that's all!", loc);

     default:
     default:

-      result = yy::parser::token::END_OF_FILE;
-      break;
+      return yy::parser::make_END_OF_FILE (loc);

   }
   }

-
-  stage++;
-  return result;

 }
 
 // Mandatory error function
 void
 }
 
 // Mandatory error function
 void

-yy::parser::error (const yy::parser::location_type& yylloc,
-                   const std::string& message)
+yy::parser::error (const yy::parser::location_type& loc, const std::string& msg)

 {
 {

-  std::cerr << yylloc << ": " << message << std::endl;
+  std::cerr << loc << ": " << msg << std::endl;

 }
 
 int
 }
 
 int

-main (int argc, char *argv[])
+main ()

 {
   yy::parser p;
   p.set_debug_level (!!getenv ("YYDEBUG"));
 {
   yy::parser p;
   p.set_debug_level (!!getenv ("YYDEBUG"));

-  return p.parse();
+  return p.parse ();

 }
 
 // Local Variables:
 }
 
 // Local Variables: