Make higher levels adapt Bodys exprs having ExprOrPatId values

crates/hir/src/diagnostics.rs

@@ -6,6 +6,7 @@
 use cfg::{CfgExpr, CfgOptions};
 use either::Either;
 use hir_def::{
+    body::ExprOrPatPtr,
     hir::ExprOrPatId,
     path::{hir_segment_to_ast_segment, ModPath},
     type_ref::TypesSourceMap,
@@ -115,14 +116,14 @@ diagnostics![
 
 #[derive(Debug)]
 pub struct BreakOutsideOfLoop {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub is_break: bool,
     pub bad_value_break: bool,
 }
 
 #[derive(Debug)]
 pub struct TypedHole {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub expected: Type,
 }
 
@@ -234,13 +235,13 @@ pub struct MismatchedTupleStructPatArgCount {
 
 #[derive(Debug)]
 pub struct ExpectedFunction {
-    pub call: InFile<AstPtr<ast::Expr>>,
+    pub call: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub found: Type,
 }
 
 #[derive(Debug)]
 pub struct UnresolvedField {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub receiver: Type,
     pub name: Name,
     pub method_with_same_name_exists: bool,
@@ -248,7 +249,7 @@ pub struct UnresolvedField {
 
 #[derive(Debug)]
 pub struct UnresolvedMethodCall {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub receiver: Type,
     pub name: Name,
     pub field_with_same_name: Option<Type>,
@@ -267,7 +268,7 @@ pub struct UnresolvedIdent {
 
 #[derive(Debug)]
 pub struct PrivateField {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub field: Field,
 }
 
@@ -302,7 +303,7 @@ pub struct ReplaceFilterMapNextWithFindMap {
 
 #[derive(Debug)]
 pub struct MismatchedArgCount {
-    pub call_expr: InFile<AstPtr<ast::Expr>>,
+    pub call_expr: InFile<ExprOrPatPtr>,
     pub expected: usize,
     pub found: usize,
 }
@@ -395,13 +396,13 @@ pub struct RemoveUnnecessaryElse {
 
 #[derive(Debug)]
 pub struct CastToUnsized {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub cast_ty: Type,
 }
 
 #[derive(Debug)]
 pub struct InvalidCast {
-    pub expr: InFile<AstPtr<ast::Expr>>,
+    pub expr: InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
     pub error: CastError,
     pub expr_ty: Type,
     pub cast_ty: Type,
@@ -428,9 +429,7 @@ impl AnyDiagnostic {
                     .collect();
 
                 let record = match record {
-                    Either::Left(record_expr) => {
-                        source_map.expr_syntax(record_expr).ok()?.map(AstPtr::wrap_left)
-                    }
+                    Either::Left(record_expr) => source_map.expr_syntax(record_expr).ok()?,
                     Either::Right(record_pat) => source_map.pat_syntax(record_pat).ok()?,
                 };
                 let file = record.file_id;
@@ -474,7 +473,7 @@ impl AnyDiagnostic {
                     return Some(
                         ReplaceFilterMapNextWithFindMap {
                             file: next_source_ptr.file_id,
-                            next_expr: next_source_ptr.value,
+                            next_expr: next_source_ptr.value.cast()?,
                         }
                         .into(),
                     );
@@ -484,7 +483,9 @@ impl AnyDiagnostic {
                 match source_map.expr_syntax(match_expr) {
                     Ok(source_ptr) => {
                         let root = source_ptr.file_syntax(db.upcast());
-                        if let ast::Expr::MatchExpr(match_expr) = &source_ptr.value.to_node(&root) {
+                        if let Either::Left(ast::Expr::MatchExpr(match_expr)) =
+                            &source_ptr.value.to_node(&root)
+                        {
                             match match_expr.expr() {
                                 Some(scrut_expr) if match_expr.match_arm_list().is_some() => {
                                     return Some(
@@ -561,7 +562,7 @@ impl AnyDiagnostic {
         let pat_syntax =
             |pat| source_map.pat_syntax(pat).inspect_err(|_| stdx::never!("synthetic syntax")).ok();
         let expr_or_pat_syntax = |id| match id {
-            ExprOrPatId::ExprId(expr) => expr_syntax(expr).map(|it| it.map(AstPtr::wrap_left)),
+            ExprOrPatId::ExprId(expr) => expr_syntax(expr),
             ExprOrPatId::PatId(pat) => pat_syntax(pat),
         };
         Some(match d {
@@ -633,7 +634,7 @@ impl AnyDiagnostic {
             &InferenceDiagnostic::UnresolvedIdent { id } => {
                 let node = match id {
                     ExprOrPatId::ExprId(id) => match source_map.expr_syntax(id) {
-                        Ok(syntax) => syntax.map(|it| (it.wrap_left(), None)),
+                        Ok(syntax) => syntax.map(|it| (it, None)),
                         Err(SyntheticSyntax) => source_map
                             .format_args_implicit_capture(id)?
                             .map(|(node, range)| (node.wrap_left(), Some(range))),
@@ -652,7 +653,7 @@ impl AnyDiagnostic {
             }
             &InferenceDiagnostic::MismatchedTupleStructPatArgCount { pat, expected, found } => {
                 let expr_or_pat = match pat {
-                    ExprOrPatId::ExprId(expr) => expr_syntax(expr)?.map(AstPtr::wrap_left),
+                    ExprOrPatId::ExprId(expr) => expr_syntax(expr)?,
                     ExprOrPatId::PatId(pat) => {
                         let InFile { file_id, value } = pat_syntax(pat)?;
 

crates/hir/src/has_source.rs

@@ -248,7 +248,7 @@ impl HasSource for Param {
                 let ast @ InFile { file_id, value } = source_map.expr_syntax(expr_id).ok()?;
                 let root = db.parse_or_expand(file_id);
                 match value.to_node(&root) {
-                    ast::Expr::ClosureExpr(it) => it
+                    Either::Left(ast::Expr::ClosureExpr(it)) => it
                         .param_list()?
                         .params()
                         .nth(self.idx)
@@ -301,7 +301,7 @@ impl HasSource for InlineAsmOperand {
             let root = src.file_syntax(db.upcast());
             return src
                 .map(|ast| match ast.to_node(&root) {
-                    ast::Expr::AsmExpr(asm) => asm
+                    Either::Left(ast::Expr::AsmExpr(asm)) => asm
                         .asm_pieces()
                         .filter_map(|it| match it {
                             ast::AsmPiece::AsmOperandNamed(it) => Some(it),

crates/hir/src/lib.rs

@@ -1957,7 +1957,7 @@ impl DefWithBody {
                 ExprOrPatId::PatId(pat) => source_map.pat_syntax(pat).map(Either::Right),
             };
             let expr_or_pat = match expr_or_pat {
-                Ok(Either::Left(expr)) => expr.map(AstPtr::wrap_left),
+                Ok(Either::Left(expr)) => expr,
                 Ok(Either::Right(InFile { file_id, value: pat })) => {
                     // cast from Either<Pat, SelfParam> -> Either<_, Pat>
                     let Some(ptr) = AstPtr::try_from_raw(pat.syntax_node_ptr()) else {
@@ -4592,10 +4592,7 @@ impl CaptureUsages {
             match span {
                 mir::MirSpan::ExprId(expr) => {
                     if let Ok(expr) = source_map.expr_syntax(expr) {
-                        result.push(CaptureUsageSource {
-                            is_ref,
-                            source: expr.map(AstPtr::wrap_left),
-                        })
+                        result.push(CaptureUsageSource { is_ref, source: expr })
                     }
                 }
                 mir::MirSpan::PatId(pat) => {

crates/hir/src/semantics/source_to_def.rs

@@ -352,7 +352,7 @@ impl SourceToDefCtx<'_, '_> {
         let src = src.cloned().map(ast::Pat::from);
         let pat_id = source_map.node_pat(src.as_ref())?;
         // the pattern could resolve to a constant, verify that this is not the case
-        if let crate::Pat::Bind { id, .. } = body[pat_id] {
+        if let crate::Pat::Bind { id, .. } = body[pat_id.as_pat()?] {
             Some((container, id))
         } else {
             None

crates/hir/src/source_analyzer.rs

@@ -142,7 +142,7 @@ impl SourceAnalyzer {
     fn pat_id(&self, pat: &ast::Pat) -> Option<PatId> {
         // FIXME: macros, see `expr_id`
         let src = InFile { file_id: self.file_id, value: pat };
-        self.body_source_map()?.node_pat(src)
+        self.body_source_map()?.node_pat(src).and_then(ExprOrPatId::as_pat)
     }
 
     fn binding_id_of_pat(&self, pat: &ast::IdentPat) -> Option<BindingId> {

crates/ide-diagnostics/src/handlers/mismatched_arg_count.rs

@@ -40,7 +40,7 @@ pub(crate) fn mismatched_arg_count(
     Diagnostic::new(
         DiagnosticCode::RustcHardError("E0107"),
         message,
-        invalid_args_range(ctx, d.call_expr.map(AstPtr::wrap_left), d.expected, d.found),
+        invalid_args_range(ctx, d.call_expr, d.expected, d.found),
     )
 }
 

crates/ide-diagnostics/src/handlers/unresolved_field.rs

@@ -1,5 +1,6 @@
 use std::iter;
 
+use either::Either;
 use hir::{db::ExpandDatabase, Adt, FileRange, HasSource, HirDisplay, InFile, Struct, Union};
 use ide_db::text_edit::TextEdit;
 use ide_db::{
@@ -41,7 +42,7 @@ pub(crate) fn unresolved_field(
         ),
         adjusted_display_range(ctx, d.expr, &|expr| {
             Some(
-                match expr {
+                match expr.left()? {
                     ast::Expr::MethodCallExpr(it) => it.name_ref(),
                     ast::Expr::FieldExpr(it) => it.name_ref(),
                     _ => None,
@@ -72,7 +73,7 @@ fn fixes(ctx: &DiagnosticsContext<'_>, d: &hir::UnresolvedField) -> Option<Vec<A
 fn field_fix(ctx: &DiagnosticsContext<'_>, d: &hir::UnresolvedField) -> Option<Assist> {
     // Get the FileRange of the invalid field access
     let root = ctx.sema.db.parse_or_expand(d.expr.file_id);
-    let expr = d.expr.value.to_node(&root);
+    let expr = d.expr.value.to_node(&root).left()?;
 
     let error_range = ctx.sema.original_range_opt(expr.syntax())?;
     let field_name = d.name.as_str();
@@ -263,7 +264,7 @@ fn record_field_layout(
 // FIXME: We should fill out the call here, move the cursor and trigger signature help
 fn method_fix(
     ctx: &DiagnosticsContext<'_>,
-    expr_ptr: &InFile<AstPtr<ast::Expr>>,
+    expr_ptr: &InFile<AstPtr<Either<ast::Expr, ast::Pat>>>,
 ) -> Option<Assist> {
     let root = ctx.sema.db.parse_or_expand(expr_ptr.file_id);
     let expr = expr_ptr.value.to_node(&root);

crates/ide-diagnostics/src/handlers/unresolved_method.rs

@@ -35,7 +35,7 @@ pub(crate) fn unresolved_method(
         ),
         adjusted_display_range(ctx, d.expr, &|expr| {
             Some(
-                match expr {
+                match expr.left()? {
                     ast::Expr::MethodCallExpr(it) => it.name_ref(),
                     ast::Expr::FieldExpr(it) => it.name_ref(),
                     _ => None,
@@ -85,7 +85,7 @@ fn field_fix(
     let expr_ptr = &d.expr;
     let root = ctx.sema.db.parse_or_expand(expr_ptr.file_id);
     let expr = expr_ptr.value.to_node(&root);
-    let (file_id, range) = match expr {
+    let (file_id, range) = match expr.left()? {
         ast::Expr::MethodCallExpr(mcall) => {
             let FileRange { range, file_id } =
                 ctx.sema.original_range_opt(mcall.receiver()?.syntax())?;
@@ -117,7 +117,7 @@ fn assoc_func_fix(ctx: &DiagnosticsContext<'_>, d: &hir::UnresolvedMethodCall) -
 
         let expr_ptr = &d.expr;
         let root = db.parse_or_expand(expr_ptr.file_id);
-        let expr: ast::Expr = expr_ptr.value.to_node(&root);
+        let expr: ast::Expr = expr_ptr.value.to_node(&root).left()?;
 
         let call = ast::MethodCallExpr::cast(expr.syntax().clone())?;
         let range = InFile::new(expr_ptr.file_id, call.syntax().text_range())