Squashed 'spasm/' content from commit 08ee95d

git-subtree-dir: spasm
git-subtree-split: 08ee95d89054ba0d33697d613799a0a013aedf89

1 files changed, 46 insertions, 0 deletions

diff --git a/src/dstack.hpp b/src/dstack.hpp
new file mode 100644
index 0000000..850b66b
--- /dev/null
+++ b/src/dstack.hpp
@@ -0,0 +1,46 @@
+#ifndef DSTACK_HPP
+#define DSTACK_HPP
+
+#include "types.hpp"
+
+namespace SpasmImpl
+{
+//! class representing the data stack
+
+/*! The class is quite simple stack. It is byte-orientatied - every push
+** and pop is done in bytes with no taking care of any byte order!
+*/
+class Dstack
+{
+   public:
+    Dstack();
+    Dstack(const Dstack&);
+    Dstack& operator=(const Dstack&);
+    ~Dstack();
+    void push(data_t);
+    void push(byte*, size_t);
+    void pop(void*, size_t);
+    data_t pop();
+    data_t top() const;
+
+    void reserve(size_t);
+    void strip_memory();
+    size_t size() const;
+    size_t reserved() const;
+    bool empty() const;
+
+   private:
+    void copy_dstack(const Dstack&);
+
+    //! pointer to the bottom of the stack
+    byte* bottom;
+
+    //! pointer to the top of the stack
+    byte* tos;
+
+    //! size of the stack in bytes
+    size_t s_size;
+};
+}  // namespace SpasmImpl
+
+#endif  // #ifndef DSTACK_HPP