StrafesNET/roblox_emulator
3
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

weave the thread of fate

Browse Source 
lifetime annotations hold &mut Context while scripts are runnable
This commit is contained in:
Quaternions 2024-10-03 17:20:31 -07:00
parent 6b66009c44
commit f5e9287798
1 changed files with 31 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/runner/runner.rs
View File

@ -11,6 +11,7 @@ pub enum Error{
},
RustLua(mlua::Error),
Script(super::instance::GetScriptError),
NoContext,
}
impl std::fmt::Display for Error{
fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
@ -42,16 +43,37 @@ impl Runner{
init(&runner.lua).map_err(Error::RustLua)?;
Ok(runner)
}
pub fn run_script(&self,script:super::instance::Script,context:&mut Context)->Result<(),Error>{
let (name,source)=script.get_name_source(context).map_err(Error::Script)?;
self.lua.globals().set("script",script).map_err(Error::RustLua)?;
pub fn runnable_context<'a>(self,context:&'a mut Context,services:crate::place::Services)->Result<Runnable<'a>,Error>{
//this makes set_app_data shut up about the lifetime
self.lua.set_app_data::<&'static mut rbx_dom_weak::WeakDom>(unsafe{core::mem::transmute(&mut context.dom)});
let r=self.lua.load(source.as_str())
.set_name(name)
.exec().map_err(|error|Error::Lua{source,error});
self.lua.remove_app_data::<&'static mut rbx_dom_weak::WeakDom>();
r?;
Ok(())
Ok(Runnable{
lua:self.lua,
_lifetime:&std::marker::PhantomData
})
}
}
//Runnable is the same thing but has context set, which it holds the lifetime for.
pub struct Runnable<'a>{
lua:mlua::Lua,
_lifetime:&'a std::marker::PhantomData<()>
}
impl Runnable<'_>{
pub fn drop_context(self)->Runner{
self.lua.remove_app_data::<&'static mut rbx_dom_weak::WeakDom>();
Runner{
lua:self.lua,
}
}
pub fn run_script(&self,script:super::instance::Script)->Result<(),Error>{
let (name,source)={
let dom=&mut *self.lua.app_data_mut::<&'static mut rbx_dom_weak::WeakDom>().ok_or(Error::NoContext)?;
let (name,source)=script.get_name_source(Context::from_mut(dom)).map_err(Error::Script)?;
self.lua.globals().set("script",script).map_err(Error::RustLua)?;
(name,source)
};
self.lua.load(source.as_str())
.set_name(name)
.exec().map_err(|error|Error::Lua{source,error})
}
}