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@@ -0,0 +1,44 @@
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+use game::Game;
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+use evaluate::PosValue;
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+use std::collections::{HashMap};
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+use std::hash::{BuildHasher, Hasher};
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+
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+pub enum EntryType {
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+ Value,
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+ LowerBound,
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+ UpperBound,
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+}
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+
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+pub struct CacheEntry {
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+ entry_type: EntryType,
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+ depth: i32,
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+ value: PosValue
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+}
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+
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+pub struct Cache {
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+ hashmap: HashMap<Game, CacheEntry>,
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+}
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+
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+pub struct GameHasher {
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+}
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+
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+impl Hasher for GameHasher {
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+ type Hasher = Self;
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+
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+ fn build_hasher(&self) -> Self::Hasher {
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+ GameHasher {}
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+ }
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+
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+ fn hash_one(&self, x: &Game) -> u64 {
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+ 0
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+ }
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+}
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+
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+
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+impl Cache {
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+ pub fn new() -> Self {
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+ Cache {
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+ hashmap: HashMap::with_hasher(hash_builder: S)
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+ }
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+ }
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+}
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