1 // Copyright 2011 Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // * Neither the name of Google Inc. nor the names of its contributors 14 // may be used to endorse or promote products derived from this software 15 // without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 #include "c_gate.hpp" 30 #include "state.ipp" 31 32 33 /// Creates a new gateway to an existing C++ Lua state. 34 /// 35 /// \param state_ The state to connect to. This object must remain alive while 36 /// the newly-constructed state_c_gate is alive. 37 lutok::state_c_gate::state_c_gate(state& state_) : 38 _state(state_) 39 { 40 } 41 42 43 /// Destructor. 44 /// 45 /// Destroying this object has no implications on the life cycle of the Lua 46 /// state. Only the corresponding state object controls when the Lua state is 47 /// closed. 48 lutok::state_c_gate::~state_c_gate(void) 49 { 50 } 51 52 53 /// Creates a C++ state for a C Lua state. 54 /// 55 /// \warning The created state object does NOT own the C state. You must take 56 /// care to properly destroy the input lua_State when you are done with it to 57 /// not leak resources. 58 /// 59 /// \param raw_state The raw state to wrap temporarily. 60 /// 61 /// \return The wrapped state without strong ownership on the input state. 62 lutok::state 63 lutok::state_c_gate::connect(lua_State* raw_state) 64 { 65 return state(static_cast< void* >(raw_state)); 66 } 67 68 69 /// Returns the C native Lua state. 70 /// 71 /// \return A native lua_State object holding the Lua C API state. 72 lua_State* 73 lutok::state_c_gate::c_state(void) 74 { 75 return static_cast< lua_State* >(_state.raw_state()); 76 } 77