1 files changed, 89 insertions, 0 deletions
diff --git a/libxsde/xsde/cxx/parser/state.hxx b/libxsde/xsde/cxx/parser/state.hxx
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+++ b/libxsde/xsde/cxx/parser/state.hxx
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+// file      : xsde/cxx/parser/state.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSDE_CXX_PARSER_STATE_HXX
+#define XSDE_CXX_PARSER_STATE_HXX
+
+#include <stddef.h> // size_t
+
+#include <xsde/cxx/parser/elements.hxx>
+
+namespace xsde
+{
+  namespace cxx
+  {
+    namespace parser
+    {
+      // POD stack with pre-allocated first element. You may
+      // need to pad your elements to get the proper alignment.
+      //
+      struct stack
+      {
+        enum error
+        {
+          error_none,
+          error_no_memory
+        };
+
+        ~stack ();
+        stack (size_t element_size, void* first_element);
+
+      public:
+        void
+        pop ();
+
+        error
+        push ();
+
+        void*
+        top ();
+
+        size_t
+        element_size () const;
+
+        void
+        clear ();
+
+      private:
+        error
+        grow ();
+
+      private:
+        size_t el_size_;
+        void* first_;
+        char* data_;
+        size_t size_;
+        size_t capacity_;
+      };
+
+      // Optimized state stack for non-recursive case (one element).
+      //
+      struct parser_stack
+      {
+        parser_stack (parser_state& first);
+
+        stack::error
+        push (parser_state&);
+
+        void
+        pop ();
+
+        parser_state&
+        top ();
+
+        void
+        clear ();
+
+      private:
+        stack stack_;
+      };
+    }
+  }
+}
+
+
+#include <xsde/cxx/parser/state.ixx>
+
+#endif  // XSDE_CXX_PARSER_STATE_HXX