X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a9b67b5b1e99b3ec3849c45fe42e5ecb382a314d..6f0a6f274c8650520003b6408684a3f0bcdece5c:/data/stack.hh

diff --git a/data/stack.hh b/data/stack.hh
index e785e808..4fd136fd 100644
--- a/data/stack.hh
+++ b/data/stack.hh
@@ -18,20 +18,10 @@
 m4_pushdef([b4_copyright_years],
            [2002-2012])
 
-# We do want M4 expansion after # for CPP macros.
-m4_changecom()
-m4_divert_push(0)dnl
-@output(b4_dir_prefix[]stack.hh@)@
-b4_copyright([Stack handling for Bison parsers in C++],
-             [2002-2012])[
-
-#ifndef BISON_STACK_HH
-# define BISON_STACK_HH
-
-# include <deque>
-
-]b4_namespace_open[
-  template <class T, class S = std::deque<T> >
+# b4_stack_define
+# ---------------
+m4_define([b4_stack_define],
+[[  template <class T, class S = std::deque<T> >
   class stack
   {
   public:
@@ -39,11 +29,13 @@ b4_copyright([Stack handling for Bison parsers in C++],
     typedef typename S::reverse_iterator iterator;
     typedef typename S::const_reverse_iterator const_iterator;
 
-    stack () : seq_ ()
+    stack ()
+      : seq_ ()
     {
     }
 
-    stack (unsigned int n) : seq_ (n)
+    stack (unsigned int n)
+      : seq_ (n)
     {
     }
 
@@ -77,16 +69,28 @@ b4_copyright([Stack handling for Bison parsers in C++],
     }
 
     inline
-    unsigned int
-    height () const
+    typename S::size_type
+    size () const
     {
       return seq_.size ();
     }
 
-    inline const_iterator begin () const { return seq_.rbegin (); }
-    inline const_iterator end () const { return seq_.rend (); }
+    inline
+    const_iterator
+    begin () const
+    {
+      return seq_.rbegin ();
+    }
+
+    inline
+    const_iterator
+    end () const
+    {
+      return seq_.rend ();
+    }
 
   private:
+    /// The wrapped container.
     S seq_;
   };
 
@@ -112,10 +116,27 @@ b4_copyright([Stack handling for Bison parsers in C++],
     const S& stack_;
     unsigned int range_;
   };
+]])
+
+b4_defines_if(
+[b4_output_begin([b4_dir_prefix[]stack.hh])
+b4_copyright([Stack handling for Bison parsers in C++])[
+
+/**
+ ** \file ]b4_dir_prefix[stack.hh
+ ** Define the ]b4_namespace_ref[::stack class.
+ */
+
+]b4_cpp_guard_open([b4_dir_prefix[]stack.hh])[
+
+# include <deque>
+
+]b4_namespace_open[
+]b4_stack_define[
 ]b4_namespace_close[
 
-#endif // not BISON_STACK_HH[]dnl
-]
-m4_divert_pop(0)
-m4_popdef([b4_copyright_years])dnl
-m4_changecom([#])
+]b4_cpp_guard_close([b4_dir_prefix[]stack.hh])
+b4_output_end()
+])
+
+m4_popdef([b4_copyright_years])