diff options
Diffstat (limited to 'src/tools/rust-analyzer/crates/ide-assists/src/handlers/generate_function.rs')
-rw-r--r-- | src/tools/rust-analyzer/crates/ide-assists/src/handlers/generate_function.rs | 142 |
1 files changed, 106 insertions, 36 deletions
diff --git a/src/tools/rust-analyzer/crates/ide-assists/src/handlers/generate_function.rs b/src/tools/rust-analyzer/crates/ide-assists/src/handlers/generate_function.rs index d564a0540..e26c76da1 100644 --- a/src/tools/rust-analyzer/crates/ide-assists/src/handlers/generate_function.rs +++ b/src/tools/rust-analyzer/crates/ide-assists/src/handlers/generate_function.rs @@ -61,56 +61,72 @@ fn gen_fn(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> { } let fn_name = &*name_ref.text(); - let target_module; - let mut adt_name = None; + let TargetInfo { target_module, adt_name, target, file, insert_offset } = + fn_target_info(ctx, path, &call, fn_name)?; + let function_builder = FunctionBuilder::from_call(ctx, &call, fn_name, target_module, target)?; + let text_range = call.syntax().text_range(); + let label = format!("Generate {} function", function_builder.fn_name); + add_func_to_accumulator( + acc, + ctx, + text_range, + function_builder, + insert_offset, + file, + adt_name, + label, + ) +} + +struct TargetInfo { + target_module: Option<Module>, + adt_name: Option<hir::Name>, + target: GeneratedFunctionTarget, + file: FileId, + insert_offset: TextSize, +} - let (target, file, insert_offset) = match path.qualifier() { +impl TargetInfo { + fn new( + target_module: Option<Module>, + adt_name: Option<hir::Name>, + target: GeneratedFunctionTarget, + file: FileId, + insert_offset: TextSize, + ) -> Self { + Self { target_module, adt_name, target, file, insert_offset } + } +} + +fn fn_target_info( + ctx: &AssistContext<'_>, + path: ast::Path, + call: &CallExpr, + fn_name: &str, +) -> Option<TargetInfo> { + match path.qualifier() { Some(qualifier) => match ctx.sema.resolve_path(&qualifier) { Some(hir::PathResolution::Def(hir::ModuleDef::Module(module))) => { - target_module = Some(module); - get_fn_target(ctx, &target_module, call.clone())? + get_fn_target_info(ctx, &Some(module), call.clone()) } Some(hir::PathResolution::Def(hir::ModuleDef::Adt(adt))) => { if let hir::Adt::Enum(_) = adt { // Don't suggest generating function if the name starts with an uppercase letter - if name_ref.text().starts_with(char::is_uppercase) { + if fn_name.starts_with(char::is_uppercase) { return None; } } - let current_module = ctx.sema.scope(call.syntax())?.module(); - let module = adt.module(ctx.sema.db); - target_module = if current_module == module { None } else { Some(module) }; - if current_module.krate() != module.krate() { - return None; - } - let (impl_, file) = get_adt_source(ctx, &adt, fn_name)?; - let (target, insert_offset) = get_method_target(ctx, &module, &impl_)?; - adt_name = if impl_.is_none() { Some(adt.name(ctx.sema.db)) } else { None }; - (target, file, insert_offset) + assoc_fn_target_info(ctx, call, adt, fn_name) } - _ => { - return None; + Some(hir::PathResolution::SelfType(impl_)) => { + let adt = impl_.self_ty(ctx.db()).as_adt()?; + assoc_fn_target_info(ctx, call, adt, fn_name) } + _ => None, }, - _ => { - target_module = None; - get_fn_target(ctx, &target_module, call.clone())? - } - }; - let function_builder = FunctionBuilder::from_call(ctx, &call, fn_name, target_module, target)?; - let text_range = call.syntax().text_range(); - let label = format!("Generate {} function", function_builder.fn_name); - add_func_to_accumulator( - acc, - ctx, - text_range, - function_builder, - insert_offset, - file, - adt_name, - label, - ) + _ => get_fn_target_info(ctx, &None, call.clone()), + } } fn gen_method(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> { @@ -366,6 +382,15 @@ fn make_return_type( (ret_type, should_focus_return_type) } +fn get_fn_target_info( + ctx: &AssistContext<'_>, + target_module: &Option<Module>, + call: CallExpr, +) -> Option<TargetInfo> { + let (target, file, insert_offset) = get_fn_target(ctx, target_module, call)?; + Some(TargetInfo::new(*target_module, None, target, file, insert_offset)) +} + fn get_fn_target( ctx: &AssistContext<'_>, target_module: &Option<Module>, @@ -399,6 +424,24 @@ fn get_method_target( Some((target.clone(), get_insert_offset(&target))) } +fn assoc_fn_target_info( + ctx: &AssistContext<'_>, + call: &CallExpr, + adt: hir::Adt, + fn_name: &str, +) -> Option<TargetInfo> { + let current_module = ctx.sema.scope(call.syntax())?.module(); + let module = adt.module(ctx.sema.db); + let target_module = if current_module == module { None } else { Some(module) }; + if current_module.krate() != module.krate() { + return None; + } + let (impl_, file) = get_adt_source(ctx, &adt, fn_name)?; + let (target, insert_offset) = get_method_target(ctx, &module, &impl_)?; + let adt_name = if impl_.is_none() { Some(adt.name(ctx.sema.db)) } else { None }; + Some(TargetInfo::new(target_module, adt_name, target, file, insert_offset)) +} + fn get_insert_offset(target: &GeneratedFunctionTarget) -> TextSize { match &target { GeneratedFunctionTarget::BehindItem(it) => it.text_range().end(), @@ -1634,6 +1677,33 @@ fn bar() ${0:-> _} { } #[test] + fn create_static_method_within_an_impl_with_self_syntax() { + check_assist( + generate_function, + r" +struct S; +impl S { + fn foo(&self) { + Self::bar$0(); + } +} +", + r" +struct S; +impl S { + fn foo(&self) { + Self::bar(); + } + + fn bar() ${0:-> _} { + todo!() + } +} +", + ) + } + + #[test] fn no_panic_on_invalid_global_path() { check_assist( generate_function, |