Rust: add flag to turn off extractor path resolution

rust/codeql-extractor.yml

@@ -78,3 +78,7 @@ options:
           Collect flame graph data using the `tracing-flame` crate. To render a flame graph
           or chart, run the `inferno-flamegraph` command. See also: https://crates.io/crates/tracing-flame
         type: string
+  skip_path_resolution:
+    title: Skip path resolution
+    description: >
+      Skip path resolution. This is experimental, while we move path resolution from the extractor to the QL library.

rust/extractor/src/config.rs

@@ -57,6 +57,7 @@ pub struct Config {
     pub qltest: bool,
     pub qltest_cargo_check: bool,
     pub qltest_dependencies: Vec<String>,
+    pub skip_path_resolution: bool,
 }
 
 impl Config {

rust/extractor/src/main.rs

@@ -1,5 +1,6 @@
 use crate::diagnostics::{emit_extraction_diagnostics, ExtractionStep};
 use crate::rust_analyzer::path_to_file_id;
+use crate::translate::ResolvePaths;
 use crate::trap::TrapId;
 use anyhow::Context;
 use archive::Archiver;
@@ -43,7 +44,7 @@ impl<'a> Extractor<'a> {
         }
     }
 
-    fn extract(&mut self, rust_analyzer: &rust_analyzer::RustAnalyzer, file: &std::path::Path) {
+    fn extract(&mut self, rust_analyzer: &RustAnalyzer, file: &Path, resolve_paths: ResolvePaths) {
         self.archiver.archive(file);
 
         let before_parse = Instant::now();
@@ -66,6 +67,7 @@ impl<'a> Extractor<'a> {
             label,
             line_index,
             semantics_info.as_ref().ok(),
+            resolve_paths,
         );
 
         for err in errors {
@@ -102,12 +104,17 @@ impl<'a> Extractor<'a> {
         file: &Path,
         semantics: &Semantics<'_, RootDatabase>,
         vfs: &Vfs,
+        resolve_paths: ResolvePaths,
     ) {
-        self.extract(&RustAnalyzer::new(vfs, semantics), file);
+        self.extract(&RustAnalyzer::new(vfs, semantics), file, resolve_paths);
     }
 
     pub fn extract_without_semantics(&mut self, file: &Path, reason: &str) {
-        self.extract(&RustAnalyzer::WithoutSemantics { reason }, file);
+        self.extract(
+            &RustAnalyzer::WithoutSemantics { reason },
+            file,
+            ResolvePaths::No,
+        );
     }
 
     pub fn load_manifest(
@@ -236,12 +243,19 @@ fn main() -> anyhow::Result<()> {
         extractor.extract_without_semantics(file, "no manifest found");
     }
     let cargo_config = cfg.to_cargo_config(&cwd()?);
+    let resolve_paths = if cfg.skip_path_resolution {
+        ResolvePaths::No
+    } else {
+        ResolvePaths::Yes
+    };
     for (manifest, files) in map.values().filter(|(_, files)| !files.is_empty()) {
         if let Some((ref db, ref vfs)) = extractor.load_manifest(manifest, &cargo_config) {
             let semantics = Semantics::new(db);
             for file in files {
                 match extractor.load_source(file, &semantics, vfs) {
-                    Ok(()) => extractor.extract_with_semantics(file, &semantics, vfs),
+                    Ok(()) => {
+                        extractor.extract_with_semantics(file, &semantics, vfs, resolve_paths)
+                    }
                     Err(reason) => extractor.extract_without_semantics(file, &reason),
                 };
             }

rust/extractor/src/translate.rs

@@ -2,4 +2,4 @@ mod base;
 mod generated;
 mod mappings;
 
-pub use base::Translator;
+pub use base::{ResolvePaths, Translator};

rust/extractor/src/translate/base.rs

@@ -83,13 +83,20 @@ macro_rules! dispatch_to_tracing {
     };
 }
 
+#[derive(Copy, Clone, PartialEq, Eq)]
+pub enum ResolvePaths {
+    Yes,
+    No,
+}
+
 pub struct Translator<'a> {
     pub trap: TrapFile,
     path: &'a str,
     label: Label<generated::File>,
     line_index: LineIndex,
     file_id: Option<EditionedFileId>,
     pub semantics: Option<&'a Semantics<'a, RootDatabase>>,
+    resolve_paths: ResolvePaths,
 }
 
 const UNKNOWN_LOCATION: (LineCol, LineCol) =
@@ -102,6 +109,7 @@ impl<'a> Translator<'a> {
         label: Label<generated::File>,
         line_index: LineIndex,
         semantic_info: Option<&FileSemanticInformation<'a>>,
+        resolve_paths: ResolvePaths,
     ) -> Translator<'a> {
         Translator {
             trap,
@@ -110,6 +118,7 @@ impl<'a> Translator<'a> {
             line_index,
             file_id: semantic_info.map(|i| i.file_id),
             semantics: semantic_info.map(|i| i.semantics),
+            resolve_paths,
         }
     }
     fn location(&self, range: TextRange) -> Option<(LineCol, LineCol)> {
@@ -497,6 +506,9 @@ impl<'a> Translator<'a> {
         item: &T,
         label: Label<generated::Addressable>,
     ) {
+        if self.resolve_paths == ResolvePaths::No {
+            return;
+        }
         (|| {
             let sema = self.semantics.as_ref()?;
             let def = T::Hir::try_from_source(item, sema)?;
@@ -517,6 +529,9 @@ impl<'a> Translator<'a> {
         item: &ast::Variant,
         label: Label<generated::Variant>,
     ) {
+        if self.resolve_paths == ResolvePaths::No {
+            return;
+        }
         (|| {
             let sema = self.semantics.as_ref()?;
             let def = sema.to_enum_variant_def(item)?;
@@ -537,6 +552,9 @@ impl<'a> Translator<'a> {
         item: &impl PathAst,
         label: Label<generated::Resolvable>,
     ) {
+        if self.resolve_paths == ResolvePaths::No {
+            return;
+        }
         (|| {
             let path = item.path()?;
             let sema = self.semantics.as_ref()?;
@@ -557,6 +575,9 @@ impl<'a> Translator<'a> {
         item: &ast::MethodCallExpr,
         label: Label<generated::MethodCallExpr>,
     ) {
+        if self.resolve_paths == ResolvePaths::No {
+            return;
+        }
         (|| {
             let sema = self.semantics.as_ref()?;
             let resolved = sema.resolve_method_call_fallback(item)?;

rust/ql/test/extractor-tests/canonical_path_disabled/anonymous.rs

@@ -0,0 +1,39 @@
+// would prefer to write `include!("../canonical_paths/anonymous.rs");`
+// but `include!` does not work with out-of-dir files
+
+use super::regular::Trait;
+
+fn canonicals() {
+    struct OtherStruct;
+
+    trait OtherTrait {
+        fn g(&self);
+    }
+
+    impl OtherTrait for OtherStruct {
+        fn g(&self) {}
+    }
+
+    impl OtherTrait for crate::regular::Struct {
+        fn g(&self) {}
+    }
+
+    impl crate::regular::Trait for OtherStruct {
+        fn f(&self) {}
+    }
+
+    fn nested() {
+        struct OtherStruct;
+    }
+
+    fn usage() {
+        let s = OtherStruct {};
+        s.f();
+        s.g();
+        nested();
+    }
+}
+
+fn other() {
+    struct OtherStruct;
+}

rust/ql/test/extractor-tests/canonical_path_disabled/canonical_paths.expected

@@ -0,0 +1,66 @@
+canonicalPaths
+| anonymous.rs:4:1:4:26 | Use | None | None |
+| anonymous.rs:6:1:35:1 | fn canonicals | None | None |
+| anonymous.rs:7:5:7:23 | struct OtherStruct | None | None |
+| anonymous.rs:9:5:11:5 | trait OtherTrait | None | None |
+| anonymous.rs:10:9:10:20 | fn g | None | None |
+| anonymous.rs:13:5:15:5 | impl OtherTrait for OtherStruct { ... } | None | None |
+| anonymous.rs:14:9:14:22 | fn g | None | None |
+| anonymous.rs:17:5:19:5 | impl OtherTrait for ...::Struct { ... } | None | None |
+| anonymous.rs:18:9:18:22 | fn g | None | None |
+| anonymous.rs:21:5:23:5 | impl ...::Trait for OtherStruct { ... } | None | None |
+| anonymous.rs:22:9:22:22 | fn f | None | None |
+| anonymous.rs:25:5:27:5 | fn nested | None | None |
+| anonymous.rs:26:9:26:27 | struct OtherStruct | None | None |
+| anonymous.rs:29:5:34:5 | fn usage | None | None |
+| anonymous.rs:37:1:39:1 | fn other | None | None |
+| anonymous.rs:38:5:38:23 | struct OtherStruct | None | None |
+| lib.rs:1:1:1:14 | mod anonymous | None | None |
+| lib.rs:2:1:2:12 | mod regular | None | None |
+| regular.rs:4:1:5:18 | struct Struct | None | None |
+| regular.rs:7:1:9:1 | trait Trait | None | None |
+| regular.rs:8:5:8:16 | fn f | None | None |
+| regular.rs:11:1:13:1 | impl Trait for Struct { ... } | None | None |
+| regular.rs:12:5:12:18 | fn f | None | None |
+| regular.rs:15:1:17:1 | impl Struct { ... } | None | None |
+| regular.rs:16:5:16:18 | fn g | None | None |
+| regular.rs:19:1:21:1 | trait TraitWithBlanketImpl | None | None |
+| regular.rs:20:5:20:16 | fn h | None | None |
+| regular.rs:23:1:25:1 | impl TraitWithBlanketImpl for T { ... } | None | None |
+| regular.rs:24:5:24:18 | fn h | None | None |
+| regular.rs:27:1:27:12 | fn free | None | None |
+| regular.rs:29:1:35:1 | fn usage | None | None |
+| regular.rs:37:1:41:1 | enum MyEnum | None | None |
+| regular.rs:43:1:49:1 | fn enum_qualified_usage | None | None |
+| regular.rs:51:1:58:1 | fn enum_unqualified_usage | None | None |
+| regular.rs:54:5:54:18 | Use | None | None |
+| regular.rs:60:1:66:1 | fn enum_match | None | None |
+resolvedPaths
+| anonymous.rs:30:17:30:30 | OtherStruct {...} | None | None |
+| anonymous.rs:31:9:31:9 | s | None | None |
+| anonymous.rs:31:9:31:13 | s.f(...) | None | None |
+| anonymous.rs:32:9:32:9 | s | None | None |
+| anonymous.rs:32:9:32:13 | s.g(...) | None | None |
+| anonymous.rs:33:9:33:14 | nested | None | None |
+| regular.rs:30:13:30:21 | Struct {...} | None | None |
+| regular.rs:31:5:31:5 | s | None | None |
+| regular.rs:31:5:31:9 | s.f(...) | None | None |
+| regular.rs:32:5:32:5 | s | None | None |
+| regular.rs:32:5:32:9 | s.g(...) | None | None |
+| regular.rs:33:5:33:5 | s | None | None |
+| regular.rs:33:5:33:9 | s.h(...) | None | None |
+| regular.rs:34:5:34:8 | free | None | None |
+| regular.rs:44:9:44:26 | ...::None::<...> | None | None |
+| regular.rs:45:9:45:20 | ...::Some | None | None |
+| regular.rs:46:9:46:24 | ...::Variant1 | None | None |
+| regular.rs:47:9:47:24 | ...::Variant2 | None | None |
+| regular.rs:48:9:48:33 | ...::Variant3 {...} | None | None |
+| regular.rs:52:9:52:18 | None::<...> | None | None |
+| regular.rs:53:9:53:12 | Some | None | None |
+| regular.rs:55:9:55:16 | Variant1 | None | None |
+| regular.rs:56:9:56:16 | Variant2 | None | None |
+| regular.rs:57:9:57:25 | Variant3 {...} | None | None |
+| regular.rs:61:11:61:11 | e | None | None |
+| regular.rs:62:9:62:24 | ...::Variant1 | None | None |
+| regular.rs:63:9:63:27 | ...::Variant2(...) | None | None |
+| regular.rs:64:9:64:31 | ...::Variant3 {...} | None | None |

rust/ql/test/extractor-tests/canonical_path_disabled/canonical_paths.qlref

@@ -0,0 +1 @@
+extractor-tests/canonical_path/canonical_paths.ql

rust/ql/test/extractor-tests/canonical_path_disabled/options.yml

@@ -0,0 +1 @@
+skip_path_resolution: true

rust/ql/test/extractor-tests/canonical_path_disabled/regular.rs

@@ -0,0 +1,66 @@
+// would prefer to write `include!("../canonical_path/regular.rs");
+// but `include!` does not work with out-of-dir files
+
+#[derive(Eq, PartialEq)]
+pub struct Struct;
+
+pub trait Trait {
+    fn f(&self);
+}
+
+impl Trait for Struct {
+    fn f(&self) {}
+}
+
+impl Struct {
+    fn g(&self) {}
+}
+
+trait TraitWithBlanketImpl {
+    fn h(&self);
+}
+
+impl<T: Eq> TraitWithBlanketImpl for T {
+    fn h(&self) {}
+}
+
+fn free() {}
+
+fn usage() {
+    let s = Struct {};
+    s.f();
+    s.g();
+    s.h();
+    free();
+}
+
+enum MyEnum {
+    Variant1,
+    Variant2(usize),
+    Variant3 { x: usize },
+}
+
+fn enum_qualified_usage() {
+    _ = Option::None::<()>;
+    _ = Option::Some(0);
+    _ = MyEnum::Variant1;
+    _ = MyEnum::Variant2(0);
+    _ = MyEnum::Variant3 { x: 1 };
+}
+
+fn enum_unqualified_usage() {
+    _ = None::<()>;
+    _ = Some(0);
+    use MyEnum::*;
+    _ = Variant1;
+    _ = Variant2(0);
+    _ = Variant3 { x: 1 };
+}
+
+fn enum_match(e: MyEnum) {
+    match e {
+        MyEnum::Variant1 => {}
+        MyEnum::Variant2(_) => {}
+        MyEnum::Variant3 { .. } => {}
+    }
+}