forked from koniifer/ableos
92 lines
2.9 KiB
Rust
92 lines
2.9 KiB
Rust
|
use {
|
||
|
|
crate::{arraylist::ArrayList, Labels},
|
||
|
|
mlua::{Result, prelude::*},
|
||
|
|
};
|
||
|
|
|
||
|
|
#[derive(Clone, Copy, Debug, PartialEq, Eq, FromLua)]
|
||
|
|
pub struct UnassignedLabel(pub usize);
|
||
|
|
impl LuaUserData for UnassignedLabel {
|
||
|
|
fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
|
||
|
|
fields.add_field_method_get("id", |_, this| Ok(this.0));
|
||
|
|
}
|
||
|
|
|
||
|
|
fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
|
||
|
|
methods.add_method("here", |lua, this, ()| {
|
||
|
|
match lua
|
||
|
|
.globals()
|
||
|
|
.get::<_, LuaUserDataRefMut<Labels>>("_LABELS")?
|
||
|
|
.0
|
||
|
|
.get_mut(
|
||
|
|
this.0
|
||
|
|
.checked_sub(1)
|
||
|
|
.ok_or_else(|| mlua::Error::runtime("Invalid label"))?,
|
||
|
|
) {
|
||
|
|
Some(entry) => {
|
||
|
|
*entry = Some(
|
||
|
|
lua.globals()
|
||
|
|
.get::<_, LuaTable>("_CODE")?
|
||
|
|
.get::<_, LuaUserDataRef<ArrayList<u8>>>("text")?
|
||
|
|
.0
|
||
|
|
.len(),
|
||
|
|
);
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
None => Err(mlua::Error::runtime("Invalid label")),
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[derive(Clone, Copy, Debug, PartialEq, Eq, FromLua)]
|
||
|
|
pub struct Label(pub usize);
|
||
|
|
impl LuaUserData for Label {
|
||
|
|
fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
|
||
|
|
fields.add_field_method_get("id", |_, this| Ok(this.0));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn label<'lua>(lua: &'lua Lua, val: LuaValue<'lua>) -> Result<LuaValue<'lua>> {
|
||
|
|
let globals = lua.globals();
|
||
|
|
let mut labels = globals.get::<_, LuaUserDataRefMut<Labels>>("_LABELS")?;
|
||
|
|
|
||
|
|
let code_ix = globals
|
||
|
|
.get::<_, LuaTable>("_CODE")?
|
||
|
|
.get::<_, LuaUserDataRefMut<ArrayList<u8>>>("text")?
|
||
|
|
.0
|
||
|
|
.len();
|
||
|
|
|
||
|
|
match val {
|
||
|
|
LuaValue::Table(_) => {
|
||
|
|
labels.0.push(None);
|
||
|
|
Ok(LuaValue::UserData(
|
||
|
|
lua.create_userdata(UnassignedLabel(labels.0.len()))?,
|
||
|
|
))
|
||
|
|
}
|
||
|
|
LuaValue::String(str) => {
|
||
|
|
labels.0.push(Some(code_ix + 1));
|
||
|
|
globals
|
||
|
|
.get::<_, LuaTable>("_SYM_TABLE")?
|
||
|
|
.set(str, labels.0.len())?;
|
||
|
|
|
||
|
|
Ok(LuaValue::UserData(
|
||
|
|
lua.create_userdata(Label(labels.0.len()))?,
|
||
|
|
))
|
||
|
|
}
|
||
|
|
LuaNil => {
|
||
|
|
labels.0.push(Some(code_ix + 1));
|
||
|
|
Ok(LuaValue::UserData(
|
||
|
|
lua.create_userdata(Label(labels.0.len()))?,
|
||
|
|
))
|
||
|
|
}
|
||
|
|
_ => Err(mlua::Error::BadArgument {
|
||
|
|
to: Some("label".into()),
|
||
|
|
pos: 1,
|
||
|
|
name: None,
|
||
|
|
cause: std::sync::Arc::new(mlua::Error::runtime(
|
||
|
|
"Unsupported type (nil and string are only supported)",
|
||
|
|
)),
|
||
|
|
}),
|
||
|
|
}
|
||
|
|
}
|