From 48501fb37dd46c2e9f6f016dd987b13e61dd476a Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Fri, 17 May 2013 12:54:59 +0100
Subject: Add verbatim stack.{cpp,hpp} from mr-edd.co.uk hg repo.

---
 src/lib/stack.hpp | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/lib/stack.hpp

(limited to 'src/lib/stack.hpp')

diff --git a/src/lib/stack.hpp b/src/lib/stack.hpp
new file mode 100644
index 000000000..0430439e0
--- /dev/null
+++ b/src/lib/stack.hpp
@@ -0,0 +1,57 @@
+// Copyright 2007 Edd Dawson.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef STACK_HPP_0022_01092007
+#define STACK_HPP_0022_01092007
+
+#include <string>
+#include <list>
+#include <iosfwd>
+
+namespace dbg
+{
+    //! stack_frame objects are collected by a stack object. They contain information about the instruction pointer,
+    //! the name of the corresponding function and the "module" (executable or library) in which the function resides.
+    struct stack_frame
+    {
+        stack_frame(const void *instruction, const std::string &function, const std::string &module);
+
+        const void *instruction;
+        std::string function;
+        std::string module;
+    };
+
+    //! Allows you to write a stack_frame object to an std::ostream
+    std::ostream &operator<< (std::ostream &out, const stack_frame &frame);
+
+    //! Instantiate a dbg::stack object to collect information about the current call stack. Once created, a stack object
+    //! may be freely copied about and will continue to contain the information about the scope in which collection occurred.
+    class stack
+    {
+        public:
+            typedef std::list<stack_frame>::size_type depth_type;
+            typedef std::list<stack_frame>::const_iterator const_iterator;
+
+            //! Collect information about the current call stack. Information on the most recent frames will be collected
+            //! up to the specified limit. 0 means unlimited.
+            //! An std::runtime_error may be thrown on failure.
+            stack(depth_type limit = 0);
+
+            //! Returns an iterator referring to the "top" stack frame
+            const_iterator begin() const;
+
+            //! Returns an iterator referring to one past the "bottom" stack frame
+            const_iterator end() const;
+
+            //! Returns the number of frames collected
+            depth_type depth() const;
+
+        private:
+            std::list<stack_frame> frames_;
+    };
+
+} // close namespace dbg
+
+#endif // STACK_HPP_0022_01092007
-- 
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