node: use bitboards

Cargo.lock

@@ -1,13 +1,5 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "ahash"
-version = "0.3.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "const-random 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ansi_term"
 version = "0.11.0"
@@ -31,11 +23,6 @@ name = "bitflags"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "clap"
 version = "2.33.1"
@@ -50,44 +37,6 @@ dependencies = [
  "vec_map 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "const-random"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "const-random-macro 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "const-random-macro"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "dashmap"
-version = "3.11.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "ahash 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "getrandom"
-version = "0.1.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "hermit-abi"
 version = "0.1.13"
@@ -101,20 +50,6 @@ name = "libc"
 version = "0.2.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "num_cpus"
-version = "1.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "hermit-abi 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "strsim"
 version = "0.8.0"
@@ -138,7 +73,6 @@ name = "vatu"
 version = "0.1.0"
 dependencies = [
  "clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "dashmap 3.11.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -146,11 +80,6 @@ name = "vec_map"
 version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "wasi"
-version = "0.9.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "winapi"
 version = "0.3.8"
@@ -171,25 +100,16 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [metadata]
-"checksum ahash 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "e8fd72866655d1904d6b0997d0b07ba561047d070fbe29de039031c641b61217"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 "checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
-"checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdfa80d47f954d53a35a64987ca1422f495b8d6483c0fe9f7117b36c2a792129"
-"checksum const-random 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "2f1af9ac737b2dd2d577701e59fd09ba34822f6f2ebdb30a7647405d9e55e16a"
-"checksum const-random-macro 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "25e4c606eb459dd29f7c57b2e0879f2b6f14ee130918c2b78ccb58a9624e6c7a"
-"checksum dashmap 3.11.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8cfcd41ae02d60edded204341d2798ba519c336c51a37330aa4b98a1128def32"
-"checksum getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 "checksum hermit-abi 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "91780f809e750b0a89f5544be56617ff6b1227ee485bcb06ebe10cdf89bd3b71"
 "checksum libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)" = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
-"checksum num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
-"checksum proc-macro-hack 0.5.16 (registry+https://github.com/rust-lang/crates.io-index)" = "7e0456befd48169b9f13ef0f0ad46d492cf9d2dbb918bcf38e01eed4ce3ec5e4"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 "checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
 "checksum vec_map 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
-"checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

Cargo.toml

@@ -6,4 +6,3 @@ edition = "2018"
 
 [dependencies]
 clap = "2.33"
-dashmap = "3.11"

src/board.rs

@@ -126,7 +126,7 @@ pub fn sq_to_string(square: Square) -> String {
 }
 
 /// Board representation with color/piece bitboards.
-#[derive(PartialEq)]
+#[derive(Clone, PartialEq)]
 pub struct Board {
     pub colors: [Bitboard; 2],
     pub pieces: [Bitboard; 6],

src/node.rs

@@ -1,5 +1,4 @@
 use std::fmt;
-use std::hash::{Hash, Hasher};
 
 use crate::board;
 use crate::movement::{self, Move};
@@ -7,7 +6,7 @@ use crate::rules;
 use crate::stats;
 
 /// Analysis node: a board along with the game state.
-#[derive(Clone)]
+#[derive(Clone, PartialEq)]
 pub struct Node {
     /// Board for this node.
     pub board: board::Board,
@@ -19,7 +18,7 @@ impl Node {
     /// Create a new node for an empty board and a new game state.
     pub fn new() -> Node {
         Node {
-            board: board::new_empty(),
+            board: board::Board::new_empty(),
             game_state: rules::GameState::new(),
         }
     }
@@ -53,7 +52,7 @@ impl fmt::Debug for Node {
 impl fmt::Display for Node {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let mut s = vec!();
-        board::draw(&self.board, &mut s);
+        self.board.draw(&mut s);
         let board_drawing = String::from_utf8_lossy(&s).to_string();
         write!(
             f,
@@ -63,19 +62,3 @@ impl fmt::Display for Node {
         )
     }
 }
-
-impl PartialEq for Node {
-    fn eq(&self, other: &Self) -> bool {
-        self.board.iter().zip(other.board.iter()).all(|(a, b)| a == b)
-        && self.game_state == other.game_state
-    }
-}
-
-impl Eq for Node {}
-
-impl Hash for Node {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.board.iter().for_each(|square| state.write_u8(*square));
-        self.game_state.hash(state);
-    }
-}