anonymous_namespace{state.cpp} Namespace Reference

Functions
static int	protected_getglobal (lua_State *state)
	Wrapper around lua_getglobal to run in a protected environment.
static int	protected_gettable (lua_State *state)
	Wrapper around lua_gettable to run in a protected environment.
static int	protected_next (lua_State *state)
	Wrapper around lua_next to run in a protected environment.
static int	protected_setglobal (lua_State *state)
	Wrapper around lua_setglobal to run in a protected environment.
static int	protected_settable (lua_State *state)
	Wrapper around lua_settable to run in a protected environment.
static int	call_cxx_function_from_c (lutok::cxx_function function, lua_State *raw_state) throw ()
	Calls a C++ Lua function from a C calling environment.
static int	cxx_closure_trampoline (lua_State *raw_state)
	Lua glue to call a C++ closure.
static int	cxx_function_trampoline (lua_State *raw_state)
	Lua glue to call a C++ function.

---

Function Documentation

static int anonymous_namespace{state.cpp}::call_cxx_function_from_c ( lutok::cxx_function  function, lua_State *  raw_state  ) throw ()

static

Calls a C++ Lua function from a C calling environment.

Any errors reported by the C++ function are caught and reported to the caller as Lua errors.

Parameters:

function	The C++ function to call.
raw_state	The raw Lua state.

Returns:

The number of return values pushed onto the Lua stack by the function.

static int anonymous_namespace{state.cpp}::cxx_closure_trampoline ( lua_State *  raw_state )

static

Lua glue to call a C++ closure.

This Lua binding is actually a closure that we have constructed from the state.push_cxx_closure() method. The closure contains the same upvalues provided by the user plus an extra upvalue that contains the address of the C++ function we have to call. All we do here is safely delegate the execution to the wrapped C++ closure.

Parameters:

raw_state

The Lua C API state.

Returns:

The number of return values of the called closure.

static int anonymous_namespace{state.cpp}::cxx_function_trampoline ( lua_State *  raw_state )

static

Lua glue to call a C++ function.

This Lua binding is actually a closure that we have constructed from the state.push_cxx_function() method. The closure has a single upvalue that contains the address of the C++ function we have to call. All we do here is safely delegate the execution to the wrapped C++ function.

Parameters:

raw_state

The Lua C API state.

Returns:

The number of return values of the called function.

static int anonymous_namespace{state.cpp}::protected_getglobal ( lua_State *  state )

static

Wrapper around lua_getglobal to run in a protected environment.

Precondition:

stack(-1) is the name of the global to get.

Postcondition:

stack(-1) is the value of the global.

Parameters:

state

The Lua C API state.

Returns:

The number of return values pushed onto the stack.

static int anonymous_namespace{state.cpp}::protected_gettable ( lua_State *  state )

static

Wrapper around lua_gettable to run in a protected environment.

Precondition:

stack(-2) is the table to get the element from.

stack(-1) is the table index.

Postcondition:

stack(-1) is the value of stack(-2)[stack(-1)].

Parameters:

state

The Lua C API state.

Returns:

The number of return values pushed onto the stack.

static int anonymous_namespace{state.cpp}::protected_next ( lua_State *  state )

static

Wrapper around lua_next to run in a protected environment.

Precondition:

stack(-2) is the table to get the next element from.

stack(-1) is the last processed key.

Postcondition:

stack(-1) is the value of next(stack(-2), stack(-1)).

Parameters:

state

The Lua C API state.

Returns:

The number of return values pushed onto the stack.

static int anonymous_namespace{state.cpp}::protected_setglobal ( lua_State *  state )

static

Wrapper around lua_setglobal to run in a protected environment.

Precondition:

stack(-2) is the name of the global to set.

stack(-1) is the value to set the global to.

Parameters:

state

The Lua C API state.

Returns:

The number of return values pushed onto the stack.

static int anonymous_namespace{state.cpp}::protected_settable ( lua_State *  state )

static

Wrapper around lua_settable to run in a protected environment.

Precondition:

stack(-3) is the table to set the element into.

stack(-2) is the table index.

stack(-1) is the value to set.

Parameters:

state

The Lua C API state.

Returns:

The number of return values pushed onto the stack.