hir-ty: Fix warnings about clippy str_to_string rule

Author: tetsuharuohzeki

crates/hir-ty/src/consteval/tests.rs

@@ -133,7 +133,7 @@ fn bit_op() {
     check_number(r#"const GOAL: i8 = 1 << 7"#, (1i8 << 7) as i128);
     check_number(r#"const GOAL: i8 = -1 << 2"#, (-1i8 << 2) as i128);
     check_fail(r#"const GOAL: i8 = 1 << 8"#, |e| {
-        e == ConstEvalError::MirEvalError(MirEvalError::Panic("Overflow in Shl".to_string()))
+        e == ConstEvalError::MirEvalError(MirEvalError::Panic("Overflow in Shl".to_owned()))
     });
     check_number(r#"const GOAL: i32 = 100000000i32 << 11"#, (100000000i32 << 11) as i128);
 }
@@ -2756,7 +2756,7 @@ fn memory_limit() {
         "#,
         |e| {
             e == ConstEvalError::MirEvalError(MirEvalError::Panic(
-                "Memory allocation of 30000000000 bytes failed".to_string(),
+                "Memory allocation of 30000000000 bytes failed".to_owned(),
             ))
         },
     );

crates/hir-ty/src/infer/closure.rs

@@ -194,17 +194,15 @@ impl CapturedItem {
                     }
                     let variant_data = f.parent.variant_data(db.upcast());
                     let field = match &*variant_data {
-                        VariantData::Record(fields) => fields[f.local_id]
-                            .name
-                            .as_str()
-                            .unwrap_or("[missing field]")
-                            .to_string(),
+                        VariantData::Record(fields) => {
+                            fields[f.local_id].name.as_str().unwrap_or("[missing field]").to_owned()
+                        }
                         VariantData::Tuple(fields) => fields
                             .iter()
                             .position(|it| it.0 == f.local_id)
                             .unwrap_or_default()
                             .to_string(),
-                        VariantData::Unit => "[missing field]".to_string(),
+                        VariantData::Unit => "[missing field]".to_owned(),
                     };
                     result = format!("{result}.{field}");
                     field_need_paren = false;

crates/hir-ty/src/mir/eval.rs

@@ -1763,7 +1763,7 @@ impl Evaluator<'_> {
             }
         };
         mem.get(pos..pos + size)
-            .ok_or_else(|| MirEvalError::UndefinedBehavior("out of bound memory read".to_string()))
+            .ok_or_else(|| MirEvalError::UndefinedBehavior("out of bound memory read".to_owned()))
     }
 
     fn write_memory_using_ref(&mut self, addr: Address, size: usize) -> Result<&mut [u8]> {
@@ -1777,7 +1777,7 @@ impl Evaluator<'_> {
             }
         };
         mem.get_mut(pos..pos + size)
-            .ok_or_else(|| MirEvalError::UndefinedBehavior("out of bound memory write".to_string()))
+            .ok_or_else(|| MirEvalError::UndefinedBehavior("out of bound memory write".to_owned()))
     }
 
     fn write_memory(&mut self, addr: Address, r: &[u8]) -> Result<()> {
@@ -1800,7 +1800,7 @@ impl Evaluator<'_> {
             return Ok(());
         }
 
-        let oob = || MirEvalError::UndefinedBehavior("out of bounds memory write".to_string());
+        let oob = || MirEvalError::UndefinedBehavior("out of bounds memory write".to_owned());
 
         match (addr, r.addr) {
             (Stack(dst), Stack(src)) => {
@@ -2653,7 +2653,7 @@ pub fn render_const_using_debug_impl(
         ptr: ArenaMap::new(),
         body: db
             .mir_body(owner.into())
-            .map_err(|_| MirEvalError::NotSupported("unreachable".to_string()))?,
+            .map_err(|_| MirEvalError::NotSupported("unreachable".to_owned()))?,
         drop_flags: DropFlags::default(),
     };
     let data = evaluator.allocate_const_in_heap(locals, c)?;

crates/hir-ty/src/mir/eval/shim.rs

@@ -304,7 +304,7 @@ impl Evaluator<'_> {
         use LangItem::*;
         let mut args = args.iter();
         match it {
-            BeginPanic => Err(MirEvalError::Panic("<unknown-panic-payload>".to_string())),
+            BeginPanic => Err(MirEvalError::Panic("<unknown-panic-payload>".to_owned())),
             PanicFmt => {
                 let message = (|| {
                     let resolver = self

crates/hir-ty/src/mir/lower.rs

@@ -1634,7 +1634,7 @@ impl<'ctx> MirLowerCtx<'ctx> {
         self.set_goto(prev_block, begin, span);
         f(self, begin)?;
         let my = mem::replace(&mut self.current_loop_blocks, prev).ok_or(
-            MirLowerError::ImplementationError("current_loop_blocks is corrupt".to_string()),
+            MirLowerError::ImplementationError("current_loop_blocks is corrupt".to_owned()),
         )?;
         if let Some(prev) = prev_label {
             self.labeled_loop_blocks.insert(label.unwrap(), prev);
@@ -1669,7 +1669,7 @@ impl<'ctx> MirLowerCtx<'ctx> {
             .current_loop_blocks
             .as_mut()
             .ok_or(MirLowerError::ImplementationError(
-                "Current loop access out of loop".to_string(),
+                "Current loop access out of loop".to_owned(),
             ))?
             .end
         {
@@ -1679,7 +1679,7 @@ impl<'ctx> MirLowerCtx<'ctx> {
                 self.current_loop_blocks
                     .as_mut()
                     .ok_or(MirLowerError::ImplementationError(
-                        "Current loop access out of loop".to_string(),
+                        "Current loop access out of loop".to_owned(),
                     ))?
                     .end = Some(s);
                 s

crates/hir-ty/src/mir/lower/as_place.rs

@@ -225,7 +225,7 @@ impl MirLowerCtx<'_> {
                 {
                     let Some(index_fn) = self.infer.method_resolution(expr_id) else {
                         return Err(MirLowerError::UnresolvedMethod(
-                            "[overloaded index]".to_string(),
+                            "[overloaded index]".to_owned(),
                         ));
                     };
                     let Some((base_place, current)) =

crates/hir-ty/src/tests.rs

@@ -100,7 +100,7 @@ fn check_impl(ra_fixture: &str, allow_none: bool, only_types: bool, display_sour
             if only_types {
                 types.insert(file_range, expected);
             } else if expected.starts_with("type: ") {
-                types.insert(file_range, expected.trim_start_matches("type: ").to_string());
+                types.insert(file_range, expected.trim_start_matches("type: ").to_owned());
             } else if expected.starts_with("expected") {
                 mismatches.insert(file_range, expected);
             } else if expected.starts_with("adjustments:") {
@@ -110,7 +110,7 @@ fn check_impl(ra_fixture: &str, allow_none: bool, only_types: bool, display_sour
                         .trim_start_matches("adjustments:")
                         .trim()
                         .split(',')
-                        .map(|it| it.trim().to_string())
+                        .map(|it| it.trim().to_owned())
                         .filter(|it| !it.is_empty())
                         .collect(),
                 );
@@ -331,7 +331,7 @@ fn infer_with_mismatches(content: &str, include_mismatches: bool) -> String {
         });
         for (node, ty) in &types {
             let (range, text) = if let Some(self_param) = ast::SelfParam::cast(node.value.clone()) {
-                (self_param.name().unwrap().syntax().text_range(), "self".to_string())
+                (self_param.name().unwrap().syntax().text_range(), "self".to_owned())
             } else {
                 (node.value.text_range(), node.value.text().to_string().replace('\n', " "))
             };

crates/hir-ty/src/traits.rs

@@ -104,8 +104,8 @@ pub(crate) fn trait_solve_query(
         GoalData::DomainGoal(DomainGoal::Holds(WhereClause::Implemented(it))) => {
             db.trait_data(it.hir_trait_id()).name.display(db.upcast()).to_string()
         }
-        GoalData::DomainGoal(DomainGoal::Holds(WhereClause::AliasEq(_))) => "alias_eq".to_string(),
-        _ => "??".to_string(),
+        GoalData::DomainGoal(DomainGoal::Holds(WhereClause::AliasEq(_))) => "alias_eq".to_owned(),
+        _ => "??".to_owned(),
     };
     let _p = tracing::span!(tracing::Level::INFO, "trait_solve_query", ?detail).entered();
     tracing::info!("trait_solve_query({:?})", goal.value.goal);