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|
use std::{sync::{Arc, Mutex, RwLock}, thread::JoinHandle};
use cell::{Cell, CellRef};
use mlua::{Function, IntoLua, UserData, Value};
use register::{Register, SheetId};
pub mod cell;
pub mod register;
#[derive(Debug, Default)]
pub struct Sheet {
id: register::SheetId,
rows: Vec<Vec<Cell>>,
progress: Mutex<u8>,
}
impl Sheet {
pub(self) fn new(width: usize, height: usize, id: register::SheetId) -> Self {
Self {
id,
rows: vec![vec![Cell::new_empty(); width]; height],
progress: Mutex::new(0),
}
}
pub fn set_cell(&mut self, row: usize, column: usize, cell: Cell) {
if row < self.height() && column < self.width() {
self.rows[row][column] = cell
}
}
pub fn get_cell<'a>(&'a self, row: usize, column: usize) -> Option<&'a Cell> {
if let Some(r) = self.rows.get(row) {
if let Some(_) = r.get(column) {
return Some(&self.rows[row][column]);
}
}
None
}
pub fn get_ref(&self, row: usize, column: usize) -> Option<CellRef> {
CellRef::new(self.id, row, column)
}
pub fn height(&self) -> usize {
self.rows.len()
}
pub fn set_height(&mut self, mut height: usize) {
height = height.max(1);
self.rows
.resize(height, vec![Cell::new_empty(); self.width()])
}
pub fn width(&self) -> usize {
self.rows.get(0).map(|r| r.len()).unwrap_or(1)
}
pub fn set_width(&mut self, mut width: usize) {
width = width.max(1);
for row in self.rows.iter_mut() {
row.resize(width, Cell::new_empty());
}
}
pub fn id(&self) -> register::SheetId {
self.id
}
pub fn apply(&mut self, other: Sheet) {
self.rows = other.rows;
}
pub fn progress(&self) -> u8 {
*self.progress.lock().unwrap()
}
}
impl Clone for Sheet {
fn clone(&self) -> Self {
Sheet {
id: self.id,
rows: self.rows.clone(),
progress: Mutex::new(0),
}
}
}
struct SheetLuaRef {
id: SheetId,
}
impl SheetLuaRef {
pub fn new(id: SheetId) -> Self {
Self { id }
}
}
impl UserData for SheetLuaRef {
fn add_fields<'lua, F: mlua::UserDataFields<'lua, Self>>(fields: &mut F) {
fields.add_field_method_get("width", |_, luaref| {
Ok(Register::get(luaref.id).unwrap().read().unwrap().width())
});
fields.add_field_method_get("height", |_, luaref| {
Ok(Register::get(luaref.id).unwrap().read().unwrap().height())
});
}
fn add_methods<'lua, M: mlua::UserDataMethods<'lua, Self>>(methods: &mut M) {
methods.add_method_mut("cell", |lua, luaref, (row, column): (usize, usize)| {
if let Some(_) = Register::get(luaref.id) {
Ok(CellRef::new(luaref.id, row, column).into_lua(lua).unwrap())
} else {
Ok(Value::Nil)
}
})
}
}
pub trait EvalFunction {
fn eval_function(&self, func: String, range: Vec<(usize, usize)>) -> JoinHandle<Result<Sheet, String>>;
}
impl EvalFunction for Arc<RwLock<Sheet>> {
fn eval_function(
&self,
func_text: String,
range: Vec<(usize, usize)>,
) -> JoinHandle<Result<Sheet, String>> {
let this = Arc::clone(self);
std::thread::spawn(move || {
let read_sheet = this.read().unwrap();
let mut sheet = read_sheet.clone();
*read_sheet.progress.lock().unwrap() = 0;
let lua = crate::lua::new_instance().unwrap();
let result = lua
.load(func_text.clone())
.set_name("Temp Script")
.eval::<Function>();
match result {
Ok(func) => {
for (i, (row, column)) in range.iter().enumerate() {
*read_sheet.progress.lock().unwrap() = (i * 100 / range.len()) as u8;
let cellref = read_sheet.get_ref(*row, *column);
match func.call::<_, Cell>(cellref) {
Ok(value) => {
sheet.set_cell(*row, *column, value)
},
Err(error) => return Err(error.to_string()),
}
}
Ok(sheet)
}
Err(error) => Err(error.to_string()),
}
})
}
}
|
