Struct LuaTexHost 

pub struct LuaTexHost { /* private fields */ }

The Lua interpreter with LuaTeX’s libraries.

Implementations

impl LuaTexHost

pub fn new() -> Result<Rc<Self>>

Creates the interpreter and installs the libraries.

pub fn lua(&self) -> &Lua

The underlying Lua state.

pub fn attach(engine: &mut Engine) -> Result<Rc<Self>>

Installs a host into an engine.

Trait Implementations

impl Drop for LuaTexHost

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl LuaHost for LuaTexHost

fn run( &self, engine: &mut Engine, name: &str, code: &[u8], ) -> Result<(), String>

Runs a chunk of Lua code for \directlua (or \latelua, etc.). name is the chunk name. Text printed with tex.print must be pushed back into the engine’s input by the host.

fn call_simple(&self, engine: &mut Engine, name: &str) -> Result<(), String>

Calls callback name without arguments, ignoring its results (pre_dump, stop_run, …). Does nothing if none is registered.

fn has_callback(&self, name: &str) -> bool

Whether a Lua function is registered for callback name.

fn define_font( &self, engine: &mut Engine, name: &[u8], size: i32, ) -> Option<u32>

Calls the define_font callback. Returns the id of the font it defined, or None if the font could not be loaded.

fn list_filter( &self, engine: &mut Engine, callback_name: &str, head: NodeRef, group: &str, ) -> ListFilter

Calls a node-list filter callback (pre_linebreak_filter, hpack_filter, post_linebreak_filter, …) on the list starting at head. Returns the new head; ListFilter::Flush means the list must be discarded.

fn glyph_info(&self, engine: &mut Engine, p: NodeRef) -> Option<Vec<u8>>

Calls the glyph_info callback for glyph node p: Some(text) is what to print, None means the callback returned no string.

fn dump(&self, _engine: &mut Engine) -> Vec<u8>

Data to store in the format file (e.g. lua.bytecode).

fn undump(&self, _engine: &mut Engine, data: &[u8]) -> Result<(), String>

Restores data stored by dump.