Brummel
7577ab8a90
Make English the project-wide language: all comments, string literals, CLI help text, design docs, journal, agent prompts, and README. Only CLAUDE.md (the user's own instruction file) stays German, and the live conversation between user and Claude continues in German. Adds a new "Project language: English" section to docs/DESIGN.md as the durable convention. No logic changes — translation only. Four internal error strings in the typechecker were retranslated; no test asserts on their wording. Verified: cargo test --workspace passes (44/44). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
63 lines
1.7 KiB
Rust
63 lines
1.7 KiB
Rust
//! Content-addressed hashing for definitions.
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//!
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//! Hash = BLAKE3 over the canonical JSON form (see `canonical`).
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//! The `hash` field in the input is removed before hashing.
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use crate::ast::Def;
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use crate::canonical;
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/// 16-hex-char (64-bit) prefix of the BLAKE3 hash.
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/// Enough for uniqueness within realistic codebases and compact
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/// enough for visual inspection.
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pub fn def_hash(def: &Def) -> String {
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let bytes = canonical::to_bytes(def);
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let h = blake3::hash(&bytes);
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let hex = h.to_hex();
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hex.as_str()[..16].to_string()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::ast::*;
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fn sample_fn() -> Def {
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Def::Fn(FnDef {
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name: "add".into(),
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ty: Type::Fn {
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params: vec![Type::int(), Type::int()],
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ret: Box::new(Type::int()),
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effects: vec![],
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},
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params: vec!["a".into(), "b".into()],
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body: Term::App {
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callee: Box::new(Term::Var { name: "+".into() }),
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args: vec![
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Term::Var { name: "a".into() },
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Term::Var { name: "b".into() },
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],
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},
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doc: None,
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})
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}
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#[test]
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fn hash_is_stable() {
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let h1 = def_hash(&sample_fn());
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let h2 = def_hash(&sample_fn());
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assert_eq!(h1, h2);
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assert_eq!(h1.len(), 16);
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}
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#[test]
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fn hash_changes_with_content() {
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let mut def = sample_fn();
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let h1 = def_hash(&def);
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if let Def::Fn(ref mut f) = def {
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f.name = "mul".into();
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}
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let h2 = def_hash(&def);
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assert_ne!(h1, h2);
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}
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}
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