bytewords: use static allocated hash map

The hash map is generated at compile time, this is to not allocate at runtime the HashMap as I'm going to make some PRs to make this crate no_std friendly. Signed-off-by: Jean-Pierre De Jesus DIAZ <me@jeandudey.tech>
dspicher · Dec 10, 2022 · 8feb133 · 8feb133
1 parent f820d9b
commit 8feb133
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diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -12,10 +12,10 @@ anyhow = "1.0.64"
 bitcoin_hashes = "0.11.0"
 crc = "3.0.0"
 hex = "0.4.3"
-once_cell = "1.16.0"
 rand_xoshiro = "0.6.0"
 serde = "1.0.147"
 serde_cbor = { version = "0.11.2", features = ["tags"] }
+phf = { version = "0.11.1", features = ["macros"], default-features = false }
 
 [dev-dependencies]
 qrcode = { version = "0.12.0", default-features = false }
diff --git a/src/bytewords.rs b/src/bytewords.rs
@@ -111,7 +111,7 @@ fn decode_minimal(encoded: &str) -> Result<Vec<u8>, Error> {
 
 fn decode_from_index(
     keys: &mut dyn Iterator<Item = &str>,
-    indexes: &std::collections::HashMap<&'static str, u8>,
+    indexes: &phf::Map<&'static str, u8>,
 ) -> Result<Vec<u8>, Error> {
     strip_checksum(
         &keys