[−][src]Struct rlua::prelude::LuaScope
Constructed by the Context::scope
method, allows temporarily creating Lua userdata and
callbacks that are not required to be Send or 'static.
See Context::scope
for more details.
Methods
impl<'lua, 'scope> Scope<'lua, 'scope>
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pub fn create_function<'callback, A, R, F>(
&'callback self,
func: F
) -> Result<Function<'lua>> where
A: FromLuaMulti<'callback>,
R: ToLuaMulti<'callback>,
F: 'scope + Fn(Context<'callback>, A) -> Result<R>,
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&'callback self,
func: F
) -> Result<Function<'lua>> where
A: FromLuaMulti<'callback>,
R: ToLuaMulti<'callback>,
F: 'scope + Fn(Context<'callback>, A) -> Result<R>,
Wraps a Rust function or closure, creating a callable Lua function handle to it.
This is a version of Context::create_function
that creates a callback which expires on
scope drop. See Context::scope
for more details.
pub fn create_function_mut<'callback, A, R, F>(
&'callback self,
func: F
) -> Result<Function<'lua>> where
A: FromLuaMulti<'callback>,
R: ToLuaMulti<'callback>,
F: 'scope + FnMut(Context<'callback>, A) -> Result<R>,
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&'callback self,
func: F
) -> Result<Function<'lua>> where
A: FromLuaMulti<'callback>,
R: ToLuaMulti<'callback>,
F: 'scope + FnMut(Context<'callback>, A) -> Result<R>,
Wraps a Rust mutable closure, creating a callable Lua function handle to it.
This is a version of Context::create_function_mut
that creates a callback which expires
on scope drop. See Context::scope
and Scope::create_function
for more details.
pub fn create_static_userdata<T>(&self, data: T) -> Result<AnyUserData<'lua>> where
T: 'static + UserData,
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T: 'static + UserData,
Create a Lua userdata object from a custom userdata type.
This is a version of Context::create_userdata
that creates a userdata which expires on
scope drop, and does not require that the userdata type be Send (but still requires that the
UserData be 'static). See Context::scope
for more details.
pub fn create_nonstatic_userdata<T>(&self, data: T) -> Result<AnyUserData<'lua>> where
T: 'scope + UserData,
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T: 'scope + UserData,
Create a Lua userdata object from a custom userdata type.
This is a version of Context::create_userdata
that creates a userdata which expires on
scope drop, and does not require that the userdata type be Send or 'static. See
Context::scope
for more details.
Lifting the requirement that the UserData type be 'static comes with some important
limitations, so if you only need to eliminate the Send requirement, it is probably better to
use Scope::create_static_userdata
instead.
The main limitation that comes from using non-'static userdata is that the produced userdata
will no longer have a TypeId
associated with it, becuase TypeId
can only work for
'static types. This means that it is impossible, once the userdata is created, to get a
reference to it back out of an AnyUserData
handle. This also implies that the
"function" type methods that can be added via UserDataMethods
(the ones that accept
AnyUserData
as a first parameter) are vastly less useful. Also, there is no way to re-use
a single metatable for multiple non-'static types, so there is a higher cost associated with
creating the userdata metatable each time a new userdata is created.
Trait Implementations
Auto Trait Implementations
impl<'lua, 'scope> !Send for Scope<'lua, 'scope>
impl<'lua, 'scope> !Sync for Scope<'lua, 'scope>
impl<'lua, 'scope> Unpin for Scope<'lua, 'scope>
impl<'lua, 'scope> !UnwindSafe for Scope<'lua, 'scope>
impl<'lua, 'scope> !RefUnwindSafe for Scope<'lua, 'scope>
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,