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cxx: expose rust code

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Henri Bourcereau 2026-01-02 18:55:44 +01:00
parent 0cf10fdc16
commit efa1543eaf
3 changed files with 309 additions and 4 deletions
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283
Cargo.lock generated
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@ -2,6 +2,289 @@
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1
Cargo.toml
View file

@ -4,3 +4,4 @@ version = "0.1.0"
edition = "2024" edition = "2024"
[dependencies] [dependencies]
cxx = "1.0.192"

29
src/game.rs
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@ -1,6 +1,22 @@
use std::{fmt, str}; use std::{fmt, str};
// ------------- Player #[cxx::bridge]
mod ffi {
// Rust types and signatures exposed to C++.
extern "Rust" {
type Player;
type GameState;
fn init() -> Box<GameState>;
fn do_action(self: &mut GameState, action: usize);
fn legal_actions(self: &GameState) -> Vec<usize> ;
fn to_string(self: &GameState) -> String;
}
// C++ types and signatures exposed to Rust.
unsafe extern "C++" {
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)] #[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Player { pub enum Player {
@ -118,10 +134,15 @@ type Action = usize;
pub struct GameState { pub struct GameState {
pub current_player: Option<Player>, pub current_player: Option<Player>,
pub outcome: Option<Player>, pub outcome: Option<Player>,
pub board: Board, board: Board,
pub num_moves: usize, pub num_moves: usize,
} }
// exposed to c++
fn init() -> Box<GameState> {
Box::new(GameState::default())
}
impl Default for GameState { impl Default for GameState {
fn default() -> Self { fn default() -> Self {
GameState { GameState {
@ -135,7 +156,7 @@ impl Default for GameState {
impl GameState { impl GameState {
fn is_terminal(&self) -> bool { fn is_terminal(&self) -> bool {
return self.outcome != None || self.is_full(); self.outcome.is_some() || self.is_full()
} }
fn is_full(&self) -> bool { fn is_full(&self) -> bool {
@ -157,7 +178,7 @@ impl GameState {
} }
fn undo_action(&mut self, player: Player, action: Action) { fn undo_action(&mut self, player: Player, action: Action) {
self.board.set_cell_state(action.into(), CellState::Empty); self.board.set_cell_state(action, CellState::Empty);
self.current_player = Some(player); self.current_player = Some(player);
self.outcome = None; self.outcome = None;
self.num_moves -= 1; self.num_moves -= 1;