Struct LStream 

pub struct LStream {
    pub file: Option<Box<dyn LuaFileHandle>>,
    pub close_fn: Option<fn(&mut LuaState) -> Result<usize, LuaError>>,
}

A Lua file handle. C equivalent: typedef luaL_Stream LStream.

The instance lives in LSTREAM_REGISTRY (keyed by its userdata’s identity), wrapped in Rc<RefCell<…>> so a brief file borrow and a LuaState borrow never overlap — the safe-Rust resolution of C’s single LStream * pointer.

Fields

file: Option<Box<dyn LuaFileHandle>>

OS file handle. None = incompletely opened (the pre-file pattern). Concrete implementations are installed via GlobalState::file_open_hook (registered by lua-cli) to keep std::fs out of lua-stdlib.

close_fn: Option<fn(&mut LuaState) -> Result<usize, LuaError>>

Close callback. None means the stream is closed. C: p->closef == NULL.

Implementations

impl LStream

pub fn is_closed(&self) -> bool

isclosed(p) in C: true when closef is NULL.