1 files changed, 145 insertions, 0 deletions
diff --git a/state.hpp b/state.hpp
new file mode 100644
index 000000000000..377aa062d81c
--- /dev/null
+++ b/state.hpp
@@ -0,0 +1,145 @@
+// Copyright 2011 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+//   notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+//   notice, this list of conditions and the following disclaimer in the
+//   documentation and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors
+//   may be used to endorse or promote products derived from this software
+//   without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/// \file state.hpp
+/// Provides the state wrapper class for the Lua C state.
+
+#if !defined(LUTOK_STATE_HPP)
+#define LUTOK_STATE_HPP
+
+#include <string>
+
+#if defined(_LIBCPP_VERSION) || __cplusplus >= 201103L
+#include <memory>
+#else
+#include <tr1/memory>
+#endif
+
+namespace lutok {
+
+
+class debug;
+class state;
+
+
+/// The type of a C++ function that can be bound into Lua.
+///
+/// Functions of this type are free to raise exceptions.  These will not
+/// propagate into the Lua C API.  However, any such exceptions will be reported
+/// as a Lua error and their type will be lost.
+typedef int (*cxx_function)(state&);
+
+
+/// Stack index constant pointing to the registry table.
+extern const int registry_index;
+
+
+/// A RAII model for the Lua state.
+///
+/// This class holds the state of the Lua interpreter during its existence and
+/// provides wrappers around several Lua library functions that operate on such
+/// state.
+///
+/// These wrapper functions differ from the C versions in that they use the
+/// implicit state hold by the class, they use C++ types where appropriate and
+/// they use exceptions to report errors.
+///
+/// The wrappers intend to be as lightweight as possible but, in some
+/// situations, they are pretty complex because they need to do extra work to
+/// capture the errors reported by the Lua C API.  We prefer having fine-grained
+/// error control rather than efficiency, so this is OK.
+class state {
+    struct impl;
+
+    /// Pointer to the shared internal implementation.
+#if defined(_LIBCPP_VERSION) || __cplusplus >= 201103L
+    std::shared_ptr< impl > _pimpl;
+#else
+    std::tr1::shared_ptr< impl > _pimpl;
+#endif
+
+    void* new_userdata_voidp(const size_t);
+    void* to_userdata_voidp(const int);
+
+    friend class state_c_gate;
+    explicit state(void*);
+    void* raw_state(void);
+
+public:
+    state(void);
+    ~state(void);
+
+    void close(void);
+    void get_global(const std::string&);
+    void get_global_table(void);
+    bool get_metafield(const int, const std::string&);
+    bool get_metatable(const int);
+    void get_table(const int);
+    int get_top(void);
+    void insert(const int);
+    bool is_boolean(const int);
+    bool is_function(const int);
+    bool is_nil(const int);
+    bool is_number(const int);
+    bool is_string(const int);
+    bool is_table(const int);
+    bool is_userdata(const int);
+    void load_file(const std::string&);
+    void load_string(const std::string&);
+    void new_table(void);
+    template< typename Type > Type* new_userdata(void);
+    bool next(const int);
+    void open_all(void);
+    void open_base(void);
+    void open_string(void);
+    void open_table(void);
+    void pcall(const int, const int, const int);
+    void pop(const int);
+    void push_boolean(const bool);
+    void push_cxx_closure(cxx_function, const int);
+    void push_cxx_function(cxx_function);
+    void push_integer(const int);
+    void push_nil(void);
+    void push_string(const std::string&);
+    void push_value(const int);
+    void raw_get(const int);
+    void raw_set(const int);
+    void set_global(const std::string&);
+    void set_metatable(const int);
+    void set_table(const int);
+    bool to_boolean(const int);
+    long to_integer(const int);
+    template< typename Type > Type* to_userdata(const int);
+    std::string to_string(const int);
+    int upvalue_index(const int);
+};
+
+
+}  // namespace lutok
+
+#endif  // !defined(LUTOK_STATE_HPP)