diff --git a/crates/ide-assists/src/handlers/extract_function.rs b/crates/ide-assists/src/handlers/extract_function.rs index 0605883584..c1e2f19ab1 100644 --- a/crates/ide-assists/src/handlers/extract_function.rs +++ b/crates/ide-assists/src/handlers/extract_function.rs @@ -109,8 +109,6 @@ pub(crate) fn extract_function(acc: &mut Assists, ctx: &AssistContext<'_>) -> Op let params = body.extracted_function_params(ctx, &container_info, locals_used.iter().copied()); - let extracted_from_trait_impl = body.extracted_from_trait_impl(); - let name = make_function_name(&semantics_scope); let fun = Function { @@ -129,8 +127,11 @@ pub(crate) fn extract_function(acc: &mut Assists, ctx: &AssistContext<'_>) -> Op builder.replace(target_range, make_call(ctx, &fun, old_indent)); + let has_impl_wrapper = + insert_after.ancestors().any(|a| a.kind() == SyntaxKind::IMPL && a != insert_after); + let fn_def = match fun.self_param_adt(ctx) { - Some(adt) if extracted_from_trait_impl => { + Some(adt) if anchor == Anchor::Method && !has_impl_wrapper => { let fn_def = format_function(ctx, module, &fun, old_indent, new_indent + 1); generate_impl_text(&adt, &fn_def).replace("{\n\n", "{") } @@ -272,7 +273,7 @@ enum FunType { } /// Where to put extracted function definition -#[derive(Debug)] +#[derive(Debug, Eq, PartialEq, Clone, Copy)] enum Anchor { /// Extract free function and put right after current top-level function Freestanding, @@ -1245,6 +1246,14 @@ fn node_to_insert_after(body: &FunctionBody, anchor: Anchor) -> Option break, + SyntaxKind::IMPL => { + if body.extracted_from_trait_impl() && matches!(anchor, Anchor::Method) { + let impl_node = find_non_trait_impl(&next_ancestor); + if let target_node @ Some(_) = impl_node.as_ref().and_then(last_impl_member) { + return target_node; + } + } + } SyntaxKind::ITEM_LIST if !matches!(anchor, Anchor::Freestanding) => continue, SyntaxKind::ITEM_LIST => { if ancestors.peek().map(SyntaxNode::kind) == Some(SyntaxKind::MODULE) { @@ -1265,6 +1274,29 @@ fn node_to_insert_after(body: &FunctionBody, anchor: Anchor) -> Option Option { + let as_impl = ast::Impl::cast(trait_impl.clone())?; + let impl_type = Some(impl_type_name(&as_impl)?); + + let sibblings = trait_impl.parent()?.children(); + sibblings + .filter_map(ast::Impl::cast) + .find(|s| impl_type_name(s) == impl_type && !is_trait_impl(s)) +} + +fn last_impl_member(impl_node: &ast::Impl) -> Option { + let last_child = impl_node.assoc_item_list()?.assoc_items().last()?; + Some(last_child.syntax().clone()) +} + +fn is_trait_impl(node: &ast::Impl) -> bool { + node.trait_().is_some() +} + +fn impl_type_name(impl_node: &ast::Impl) -> Option { + Some(impl_node.self_ty()?.to_string()) +} + fn make_call(ctx: &AssistContext<'_>, fun: &Function, indent: IndentLevel) -> String { let ret_ty = fun.return_type(ctx); @@ -5051,6 +5083,236 @@ impl Struct { ); } + #[test] + fn extract_method_from_trait_with_existing_non_empty_impl_block() { + check_assist( + extract_function, + r#" +struct Struct(i32); +trait Trait { + fn bar(&self) -> i32; +} + +impl Struct { + fn foo() {} +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + $0self.0 + 2$0 + } +} +"#, + r#" +struct Struct(i32); +trait Trait { + fn bar(&self) -> i32; +} + +impl Struct { + fn foo() {} + + fn $0fun_name(&self) -> i32 { + self.0 + 2 + } +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + self.fun_name() + } +} +"#, + ) + } + + #[test] + fn extract_function_from_trait_with_existing_non_empty_impl_block() { + check_assist( + extract_function, + r#" +struct Struct(i32); +trait Trait { + fn bar(&self) -> i32; +} + +impl Struct { + fn foo() {} +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + let three_squared = $03 * 3$0; + self.0 + three_squared + } +} +"#, + r#" +struct Struct(i32); +trait Trait { + fn bar(&self) -> i32; +} + +impl Struct { + fn foo() {} +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + let three_squared = fun_name(); + self.0 + three_squared + } +} + +fn $0fun_name() -> i32 { + 3 * 3 +} +"#, + ) + } + + #[test] + fn extract_method_from_trait_with_multiple_existing_impl_blocks() { + check_assist( + extract_function, + r#" +struct Struct(i32); +struct StructBefore(i32); +struct StructAfter(i32); +trait Trait { + fn bar(&self) -> i32; +} + +impl StructBefore { + fn foo(){} +} + +impl Struct { + fn foo(){} +} + +impl StructAfter { + fn foo(){} +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + $0self.0 + 2$0 + } +} +"#, + r#" +struct Struct(i32); +struct StructBefore(i32); +struct StructAfter(i32); +trait Trait { + fn bar(&self) -> i32; +} + +impl StructBefore { + fn foo(){} +} + +impl Struct { + fn foo(){} + + fn $0fun_name(&self) -> i32 { + self.0 + 2 + } +} + +impl StructAfter { + fn foo(){} +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + self.fun_name() + } +} +"#, + ) + } + + #[test] + fn extract_method_from_trait_with_multiple_existing_trait_impl_blocks() { + check_assist( + extract_function, + r#" +struct Struct(i32); +trait Trait { + fn bar(&self) -> i32; +} +trait TraitBefore { + fn before(&self) -> i32; +} +trait TraitAfter { + fn after(&self) -> i32; +} + +impl TraitBefore for Struct { + fn before(&self) -> i32 { + 42 + } +} + +impl Struct { + fn foo(){} +} + +impl TraitAfter for Struct { + fn after(&self) -> i32 { + 42 + } +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + $0self.0 + 2$0 + } +} +"#, + r#" +struct Struct(i32); +trait Trait { + fn bar(&self) -> i32; +} +trait TraitBefore { + fn before(&self) -> i32; +} +trait TraitAfter { + fn after(&self) -> i32; +} + +impl TraitBefore for Struct { + fn before(&self) -> i32 { + 42 + } +} + +impl Struct { + fn foo(){} + + fn $0fun_name(&self) -> i32 { + self.0 + 2 + } +} + +impl TraitAfter for Struct { + fn after(&self) -> i32 { + 42 + } +} + +impl Trait for Struct { + fn bar(&self) -> i32 { + self.fun_name() + } +} +"#, + ) + } + #[test] fn closure_arguments() { check_assist(