a111dd14a4
It is added an INTERNALLIB and not installed. It will be used by kyua. This is a preparatory commit for D24103. Reviewed by: emaste Obtained from: CheriBSD Sponsored by: DARPA
146 lines
4.8 KiB
C++
146 lines
4.8 KiB
C++
// Copyright 2011 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/// \file state.hpp
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/// Provides the state wrapper class for the Lua C state.
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#if !defined(LUTOK_STATE_HPP)
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#define LUTOK_STATE_HPP
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#include <string>
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#if defined(_LIBCPP_VERSION) || __cplusplus >= 201103L
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#include <memory>
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#else
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#include <tr1/memory>
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#endif
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namespace lutok {
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class debug;
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class state;
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/// The type of a C++ function that can be bound into Lua.
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///
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/// Functions of this type are free to raise exceptions. These will not
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/// propagate into the Lua C API. However, any such exceptions will be reported
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/// as a Lua error and their type will be lost.
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typedef int (*cxx_function)(state&);
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/// Stack index constant pointing to the registry table.
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extern const int registry_index;
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/// A RAII model for the Lua state.
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///
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/// This class holds the state of the Lua interpreter during its existence and
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/// provides wrappers around several Lua library functions that operate on such
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/// state.
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///
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/// These wrapper functions differ from the C versions in that they use the
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/// implicit state hold by the class, they use C++ types where appropriate and
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/// they use exceptions to report errors.
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///
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/// The wrappers intend to be as lightweight as possible but, in some
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/// situations, they are pretty complex because they need to do extra work to
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/// capture the errors reported by the Lua C API. We prefer having fine-grained
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/// error control rather than efficiency, so this is OK.
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class state {
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struct impl;
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/// Pointer to the shared internal implementation.
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#if defined(_LIBCPP_VERSION) || __cplusplus >= 201103L
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std::shared_ptr< impl > _pimpl;
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#else
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std::tr1::shared_ptr< impl > _pimpl;
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#endif
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void* new_userdata_voidp(const size_t);
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void* to_userdata_voidp(const int);
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friend class state_c_gate;
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explicit state(void*);
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void* raw_state(void);
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public:
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state(void);
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~state(void);
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void close(void);
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void get_global(const std::string&);
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void get_global_table(void);
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bool get_metafield(const int, const std::string&);
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bool get_metatable(const int);
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void get_table(const int);
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int get_top(void);
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void insert(const int);
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bool is_boolean(const int);
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bool is_function(const int);
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bool is_nil(const int);
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bool is_number(const int);
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bool is_string(const int);
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bool is_table(const int);
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bool is_userdata(const int);
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void load_file(const std::string&);
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void load_string(const std::string&);
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void new_table(void);
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template< typename Type > Type* new_userdata(void);
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bool next(const int);
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void open_all(void);
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void open_base(void);
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void open_string(void);
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void open_table(void);
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void pcall(const int, const int, const int);
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void pop(const int);
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void push_boolean(const bool);
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void push_cxx_closure(cxx_function, const int);
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void push_cxx_function(cxx_function);
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void push_integer(const int);
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void push_nil(void);
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void push_string(const std::string&);
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void push_value(const int);
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void raw_get(const int);
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void raw_set(const int);
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void set_global(const std::string&);
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void set_metatable(const int);
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void set_table(const int);
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bool to_boolean(const int);
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long to_integer(const int);
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template< typename Type > Type* to_userdata(const int);
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std::string to_string(const int);
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int upvalue_index(const int);
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};
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} // namespace lutok
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#endif // !defined(LUTOK_STATE_HPP)
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