Rust: rename MatchExpr.expr to scrutinee in all layers

This doesn't require `ql.name` and is simpler while we don't have
to write upgrade scripts. The `ql.name` mechanism might get useful
once we do have to write upgrade scripts, as that doesn't change the
dbscheme.

rust/ast-generator/src/main.rs

@@ -28,6 +28,7 @@ fn class_name(type_name: &String) -> String {
 fn property_name(type_name: &String, field_name: &String) -> String {
     match (type_name.as_str(), field_name.as_str()) {
         ("Path", "segment") => "part".to_owned(),
+        ("MatchExpr", "expr") => "scrutinee".to_owned(),
         (_, "then_branch") => "then".to_owned(),
         (_, "else_branch") => "else_".to_owned(),
         _ => field_name.to_owned(),

rust/extractor/src/generated/.generated.list

@@ -1,2 +1,2 @@
 mod.rs 4bcb9def847469aae9d8649461546b7c21ec97cf6e63d3cf394e339915ce65d7 4bcb9def847469aae9d8649461546b7c21ec97cf6e63d3cf394e339915ce65d7
-top.rs 4504ceb7e13020d5b19a4b938395fa2d5d804a962743985efe8563903448ae0c 4504ceb7e13020d5b19a4b938395fa2d5d804a962743985efe8563903448ae0c
+top.rs abab6a736e75f9eabbe31deef4de782fc05f0c053798a01d410fffc859515278 abab6a736e75f9eabbe31deef4de782fc05f0c053798a01d410fffc859515278

rust/extractor/src/generated/top.rs

@@ -5530,7 +5530,7 @@ impl From<trap::Label<MacroType>> for trap::Label<TypeRef> {
 pub struct MatchExpr {
     pub id: trap::TrapId<MatchExpr>,
     pub attrs: Vec<trap::Label<Attr>>,
-    pub expr: Option<trap::Label<Expr>>,
+    pub scrutinee: Option<trap::Label<Expr>>,
     pub match_arm_list: Option<trap::Label<MatchArmList>>,
 }
 
@@ -5544,8 +5544,8 @@ impl trap::TrapEntry for MatchExpr {
         for (i, v) in self.attrs.into_iter().enumerate() {
             out.add_tuple("match_expr_attrs", vec![id.into(), i.into(), v.into()]);
         }
-        if let Some(v) = self.expr {
-            out.add_tuple("match_expr_exprs", vec![id.into(), v.into()]);
+        if let Some(v) = self.scrutinee {
+            out.add_tuple("match_expr_scrutinees", vec![id.into(), v.into()]);
         }
         if let Some(v) = self.match_arm_list {
             out.add_tuple("match_expr_match_arm_lists", vec![id.into(), v.into()]);

rust/extractor/src/translate/generated.rs

@@ -1224,12 +1224,12 @@ impl Translator<'_> {
 
     pub(crate) fn emit_match_expr(&mut self, node: ast::MatchExpr) -> Label<generated::MatchExpr> {
         let attrs = node.attrs().map(|x| self.emit_attr(x)).collect();
-        let expr = node.expr().map(|x| self.emit_expr(x));
+        let scrutinee = node.expr().map(|x| self.emit_expr(x));
         let match_arm_list = node.match_arm_list().map(|x| self.emit_match_arm_list(x));
         let label = self.trap.emit(generated::MatchExpr {
             id: TrapId::Star,
             attrs,
-            expr,
+            scrutinee,
             match_arm_list,
         });
         self.emit_location(label, &node);

rust/ql/.generated.list

@@ -525,7 +525,7 @@ lib/codeql/rust/elements/internal/generated/PtrType.qll 40099c5a4041314b66932dfd
 lib/codeql/rust/elements/internal/generated/PureSynthConstructors.qll ea294a3ba33fd1bc632046c4fedbcb84dcb961a8e4599969d65893b19d90e590 ea294a3ba33fd1bc632046c4fedbcb84dcb961a8e4599969d65893b19d90e590
 lib/codeql/rust/elements/internal/generated/RangeExpr.qll 23cca03bf43535f33b22a38894f70d669787be4e4f5b8fe5c8f7b964d30e9027 18624cef6c6b679eeace2a98737e472432e0ead354cca02192b4d45330f047c9
 lib/codeql/rust/elements/internal/generated/RangePat.qll efd93730de217cf50dcba5875595263a5eadf9f7e4e1272401342a094d158614 229b251b3d118932e31e78ac4dfb75f48b766f240f20d436062785606d44467b
-lib/codeql/rust/elements/internal/generated/Raw.qll b342060fd7fe2214eea191859f559334a8a64cf6785048f784ed641ea1e616fd 4737f09bbd2e190eee9bb83476a0045887ff2982dd06cd4e6538fc31637ab521
+lib/codeql/rust/elements/internal/generated/Raw.qll 9476dd5a6607f722de107b51713c1f529e95429416c7e0d102b78779cf826fe6 b3a4d58fb560c89344ac734cfda3df7f4dcb627c2db79dbe26babd6a67e69dce
 lib/codeql/rust/elements/internal/generated/RecordExpr.qll eb6cb662e463f9260efae1a6ce874fa781172063b916ef1963f861e9942d308d 1a21cbccc8f3799ff13281e822818ebfb21d81591720a427cac3625512cb9d40
 lib/codeql/rust/elements/internal/generated/RecordExprField.qll 7e9f8663d3b74ebbc9603b10c9912f082febba6bd73d344b100bbd3edf837802 fbe6b578e7fd5d5a6f21bbb8c388957ab7210a6a249ec71510a50fb35b319ea1
 lib/codeql/rust/elements/internal/generated/RecordExprFieldList.qll 179a97211fe7aa6265085d4d54115cdbc0e1cd7c9b2135591e8f36d6432f13d3 dd44bbbc1e83a1ed3a587afb729d7debf7aeb7b63245de181726af13090e50c0

rust/ql/lib/codeql/rust/elements/internal/generated/Raw.qll

@@ -2172,7 +2172,7 @@ module Raw {
     /**
      * Gets the scrutinee (the expression being matched) of this match expression, if it exists.
      */
-    Expr getScrutinee() { match_expr_exprs(this, result) }
+    Expr getScrutinee() { match_expr_scrutinees(this, result) }
 
     /**
      * Gets the match arm list of this match expression, if it exists.

rust/ql/lib/rust.dbscheme

@@ -1896,9 +1896,9 @@ match_expr_attrs(
 );
 
 #keyset[id]
-match_expr_exprs(
+match_expr_scrutinees(
   int id: @match_expr ref,
-  int expr: @expr ref
+  int scrutinee: @expr ref
 );
 
 #keyset[id]

rust/schema/annotations.py

@@ -289,7 +289,7 @@ class _:
     }
     ```
     """
-    expr: _ | ql.name("scrutinee") | doc("scrutinee (the expression being matched) of this match expression")
+    scrutinee: _ | doc("scrutinee (the expression being matched) of this match expression")
 
 
 @annotate(ContinueExpr, cfg = True)

rust/schema/ast.py

@@ -364,7 +364,7 @@ class MatchArmList(AstNode):
 
 class MatchExpr(Expr):
    attrs: list["Attr"] | child
-   expr: optional["Expr"] | child
+   scrutinee: optional["Expr"] | child
    match_arm_list: optional["MatchArmList"] | child
 
 class MatchGuard(AstNode):