1 files changed, 0 insertions, 115 deletions
diff --git a/tvix/cli/src/refscan.rs b/tvix/cli/src/refscan.rs
deleted file mode 100644
index 0e0bb6c77828..000000000000
--- a/tvix/cli/src/refscan.rs
+++ /dev/null
@@ -1,115 +0,0 @@
-//! Simple scanner for non-overlapping, known references of Nix store paths in a
-//! given string.
-//!
-//! This is used for determining build references (see
-//! //tvix/eval/docs/build-references.md for more details).
-//!
-//! The scanner itself is using the Wu-Manber string-matching algorithm, using
-//! our fork of the `wu-mamber` crate.
-
-use std::collections::BTreeSet;
-use wu_manber::TwoByteWM;
-
-pub const STORE_PATH_LEN: usize = "/nix/store/00000000000000000000000000000000".len();
-
-/// Represents a "primed" reference scanner with an automaton that knows the set
-/// of store paths to scan for.
-pub struct ReferenceScanner<P: Ord + AsRef<[u8]>> {
-    candidates: Vec<P>,
-    searcher: Option<TwoByteWM>,
-    matches: Vec<usize>,
-}
-
-impl<P: Clone + Ord + AsRef<[u8]>> ReferenceScanner<P> {
-    /// Construct a new `ReferenceScanner` that knows how to scan for the given
-    /// candidate store paths.
-    pub fn new(candidates: Vec<P>) -> Self {
-        let searcher = if candidates.is_empty() {
-            None
-        } else {
-            Some(TwoByteWM::new(&candidates))
-        };
-
-        ReferenceScanner {
-            searcher,
-            candidates,
-            matches: Default::default(),
-        }
-    }
-
-    /// Scan the given str for all non-overlapping matches and collect them
-    /// in the scanner.
-    pub fn scan<S: AsRef<[u8]>>(&mut self, haystack: S) {
-        if haystack.as_ref().len() < STORE_PATH_LEN {
-            return;
-        }
-
-        if let Some(searcher) = &self.searcher {
-            for m in searcher.find(haystack) {
-                self.matches.push(m.pat_idx);
-            }
-        }
-    }
-
-    /// Finalise the reference scanner and return the resulting matches.
-    pub fn finalise(self) -> BTreeSet<P> {
-        self.matches
-            .into_iter()
-            .map(|idx| self.candidates[idx].clone())
-            .collect()
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    // The actual derivation of `nixpkgs.hello`.
-    const HELLO_DRV: &str = r#"Derive([("out","/nix/store/33l4p0pn0mybmqzaxfkpppyh7vx1c74p-hello-2.12.1","","")],[("/nix/store/6z1jfnqqgyqr221zgbpm30v91yfj3r45-bash-5.1-p16.drv",["out"]),("/nix/store/ap9g09fxbicj836zm88d56dn3ff4clxl-stdenv-linux.drv",["out"]),("/nix/store/pf80kikyxr63wrw56k00i1kw6ba76qik-hello-2.12.1.tar.gz.drv",["out"])],["/nix/store/9krlzvny65gdc8s7kpb6lkx8cd02c25b-default-builder.sh"],"x86_64-linux","/nix/store/4xw8n979xpivdc46a9ndcvyhwgif00hz-bash-5.1-p16/bin/bash",["-e","/nix/store/9krlzvny65gdc8s7kpb6lkx8cd02c25b-default-builder.sh"],[("buildInputs",""),("builder","/nix/store/4xw8n979xpivdc46a9ndcvyhwgif00hz-bash-5.1-p16/bin/bash"),("cmakeFlags",""),("configureFlags",""),("depsBuildBuild",""),("depsBuildBuildPropagated",""),("depsBuildTarget",""),("depsBuildTargetPropagated",""),("depsHostHost",""),("depsHostHostPropagated",""),("depsTargetTarget",""),("depsTargetTargetPropagated",""),("doCheck","1"),("doInstallCheck",""),("mesonFlags",""),("name","hello-2.12.1"),("nativeBuildInputs",""),("out","/nix/store/33l4p0pn0mybmqzaxfkpppyh7vx1c74p-hello-2.12.1"),("outputs","out"),("patches",""),("pname","hello"),("propagatedBuildInputs",""),("propagatedNativeBuildInputs",""),("src","/nix/store/pa10z4ngm0g83kx9mssrqzz30s84vq7k-hello-2.12.1.tar.gz"),("stdenv","/nix/store/cp65c8nk29qq5cl1wyy5qyw103cwmax7-stdenv-linux"),("strictDeps",""),("system","x86_64-linux"),("version","2.12.1")])"#;
-
-    #[test]
-    fn test_no_patterns() {
-        let mut scanner: ReferenceScanner<String> = ReferenceScanner::new(vec![]);
-
-        scanner.scan(HELLO_DRV);
-
-        let result = scanner.finalise();
-
-        assert_eq!(result.len(), 0);
-    }
-
-    #[test]
-    fn test_single_match() {
-        let mut scanner = ReferenceScanner::new(vec![
-            "/nix/store/4xw8n979xpivdc46a9ndcvyhwgif00hz-bash-5.1-p16".to_string(),
-        ]);
-        scanner.scan(HELLO_DRV);
-
-        let result = scanner.finalise();
-
-        assert_eq!(result.len(), 1);
-        assert!(result.contains("/nix/store/4xw8n979xpivdc46a9ndcvyhwgif00hz-bash-5.1-p16"));
-    }
-
-    #[test]
-    fn test_multiple_matches() {
-        let candidates = vec![
-            // these exist in the drv:
-            "/nix/store/33l4p0pn0mybmqzaxfkpppyh7vx1c74p-hello-2.12.1".to_string(),
-            "/nix/store/pf80kikyxr63wrw56k00i1kw6ba76qik-hello-2.12.1.tar.gz.drv".to_string(),
-            "/nix/store/cp65c8nk29qq5cl1wyy5qyw103cwmax7-stdenv-linux".to_string(),
-            // this doesn't:
-            "/nix/store/fn7zvafq26f0c8b17brs7s95s10ibfzs-emacs-28.2.drv".to_string(),
-        ];
-
-        let mut scanner = ReferenceScanner::new(candidates.clone());
-        scanner.scan(HELLO_DRV);
-
-        let result = scanner.finalise();
-        assert_eq!(result.len(), 3);
-
-        for c in candidates[..3].iter() {
-            assert!(result.contains(c));
-        }
-    }
-}