c++: formatting and comment changes

* data/c++.m4, data/lalr1.cc, data/stack.hh, data/variant.hh:
Fix indentation.
Fix some comments.

data/c++.m4

@@ -176,20 +176,18 @@ m4_define([b4_public_types_declare],
       inline basic_symbol (const basic_symbol& other);
 
       /// Constructor for valueless symbols.
-      inline basic_symbol (]b4_join(
+      inline basic_symbol (typename Base::value_type t]b4_locations_if([,
-        [typename Base::value_type t],
+                           const location_type& l])[);
-        b4_locations_if([const location_type& l]))[);
 
       /// Constructor for symbols with semantic value.
-      inline basic_symbol (]b4_join(
+      inline basic_symbol (typename Base::value_type t,
-        [typename Base::value_type t],
+                           const semantic_type& v]b4_locations_if([,
-        [const semantic_type& v],
+                           const location_type& l])[);
-        b4_locations_if([const location_type& l]))[);
 
       /// Assignment operator.
       inline basic_symbol& operator= (const basic_symbol& other);
 
-      /// Destructive move, \a s is emptied.
+      /// Destructive move, \a s is emptied into this.
       inline void move (basic_symbol& s);
 
       /// The semantic value.
@@ -220,6 +218,7 @@ m4_define([b4_public_types_declare],
       /// The token.
       inline token_type token () const;
 
+      /// The type used to store the symbol type.
       typedef token_type value_type;
     };
 

data/lalr1.cc

@@ -287,6 +287,7 @@ b4_location_define])])[
       /// The type (corresponding to \a state).
       inline int type_get () const;
 
+      /// The type used to store the symbol type.
       typedef state_type value_type;
     };
 
@@ -497,12 +498,10 @@ m4_if(b4_prefix, [yy], [],
     ]m4_ifset([b4_parse_param], [  ], [ :])[yydebug_ (false),
       yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
 #endif]b4_parse_param_cons[
-  {
+  {}
-  }
 
   ]b4_parser_class_name::~b4_parser_class_name[ ()
-  {
+  {}
-  }
 
 
   /*---------------.
@@ -530,10 +529,10 @@ m4_if(b4_prefix, [yy], [],
     return yystos_[state];
   }
 
+
   template <typename Base>
   void
-  ]b4_parser_class_name[::yy_destroy_ (const char* yymsg,
+  ]b4_parser_class_name[::yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const
-                                       basic_symbol<Base>& yysym) const
   {
     if (yymsg)
       YY_SYMBOL_PRINT (yymsg, yysym);
@@ -574,8 +573,7 @@ m4_if(b4_prefix, [yy], [],
 #endif
 
   void
-  ]b4_parser_class_name[::yypush_ (const char* m, state_type s,
+  ]b4_parser_class_name[::yypush_ (const char* m, state_type s, symbol_type& sym)
-                                   symbol_type& sym)
   {
     if (m)
       YY_SYMBOL_PRINT (m, sym);

data/stack.hh

@@ -41,14 +41,14 @@ m4_define([b4_stack_define],
 
     inline
     T&
-    operator [] (unsigned int i)
+    operator[] (unsigned int i)
     {
       return seq_[seq_.size () - 1 - i];
     }
 
     inline
     const T&
-    operator [] (unsigned int i) const
+    operator[] (unsigned int i) const
     {
       return seq_[seq_.size () - 1 - i];
     }

data/variant.hh

@@ -159,11 +159,12 @@ m4_define([b4_variant_define],
     }
 
     /// Swap the content with \a other, of same type.
+    ///
     /// Both variants must be built beforehand, because swapping the actual
     /// data requires reading it (with as()), and this is not possible on
     /// unconstructed variants: it would require some dynamic testing, which
     /// should not be the variant's responsability.
-    /// Swapping between built and ((possibly) non-built is done with
+    /// Swapping between built and (possibly) non-built is done with
     /// variant::move ().
     template <typename T>
     void
@@ -175,7 +176,8 @@ m4_define([b4_variant_define],
       std::swap (as<T>(), other.as<T>());
     }
 
-    /// Assign the content of \a other to this.
+    /// Move the content of \a other to this.
+    ///
     /// Destroys \a other.
     template <typename T>
     void
@@ -188,7 +190,6 @@ m4_define([b4_variant_define],
     }
 
     /// Copy the content of \a other to this.
-    /// Destroys \a other.
     template <typename T>
     void
     copy (const variant<S>& other)
@@ -227,7 +228,8 @@ m4_define([b4_variant_define],
       long double align_me;
       char raw[S];
     } buffer;]b4_parse_assert_if([
-    /// Whether something is contained.
+
+    /// Whether the content is built.
     bool built;
     /// If defined, the name of the stored type.
     const char* tname;])[