Struct CFunction 

pub struct CFunction(/* private fields */);

A wrapper around ffi::lua_CFunction to push C functions into lua as values.

Example

use tlua::{Lua, CFunction, LuaState, ffi};

let lua = Lua::new();
unsafe extern "C-unwind" fn return_42(lua: LuaState) -> libc::c_int {
    ffi::lua_pushinteger(lua, 42);
    1
}
assert_eq!(
    lua.eval_with::<_, i32>("local fn = ...; return fn()", &CFunction::new(return_42))
        .unwrap(),
    42
);

Implementations

impl CFunction

pub fn new(f: lua_CFunction) -> Self

pub fn into_inner(self) -> lua_CFunction

Trait Implementations

impl Clone for CFunction

fn clone(&self) -> CFunction

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CFunction

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<unsafe extern "C-unwind" fn(*mut lua_State) -> i32> for CFunction

fn from(f: lua_CFunction) -> Self

Converts to this type from the input type.

impl<L: AsLua> Push<L> for CFunction

type Err = Void

Error that can happen when pushing a value.

fn push_to_lua(&self, lua: L) -> Result<PushGuard<L>, (Self::Err, L)>

Pushes the value on the top of the stack.

fn push_no_err(&self, lua: L) -> PushGuard<L>

where <Self as Push<L>>::Err: Into<Void>,

Same as push_to_lua but can only succeed and is only available if Err implements Into<Void>.

impl<L: AsLua> PushInto<L> for CFunction

type Err = Void

fn push_into_lua(self, lua: L) -> Result<PushGuard<L>, (Self::Err, L)>

Push the value into lua by value

fn push_into_no_err(self, lua: L) -> PushGuard<L>

where Self: Sized, <Self as PushInto<L>>::Err: Into<Void>,

Same as push_into_lua but can only succeed and is only available if Err implements Into<Void>.

impl Copy for CFunction