38 lines
828 B
Rust
38 lines
828 B
Rust
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use rustc_data_structures::fingerprint::Fingerprint;
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use rustc_span::def_id::{DefIndex, DefPathHash};
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#[derive(Clone, Default)]
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pub struct Config;
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impl odht::Config for Config {
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type Key = DefPathHash;
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type Value = DefIndex;
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type EncodedKey = [u8; 16];
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type EncodedValue = [u8; 4];
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type H = odht::UnHashFn;
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#[inline]
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fn encode_key(k: &DefPathHash) -> [u8; 16] {
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k.0.to_le_bytes()
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}
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#[inline]
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fn encode_value(v: &DefIndex) -> [u8; 4] {
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v.as_u32().to_le_bytes()
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}
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#[inline]
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fn decode_key(k: &[u8; 16]) -> DefPathHash {
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DefPathHash(Fingerprint::from_le_bytes(*k))
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}
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#[inline]
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fn decode_value(v: &[u8; 4]) -> DefIndex {
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DefIndex::from_u32(u32::from_le_bytes(*v))
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}
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}
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pub type DefPathHashMap = odht::HashTableOwned<Config>;
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