From e94587e3153b52684fd3f6b82c8e7efc09ff5c8d Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Mon, 2 Sep 2019 21:41:50 +0300 Subject: fix assists --- crates/ra_syntax/src/ast/expr_extensions.rs | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'crates/ra_syntax/src') diff --git a/crates/ra_syntax/src/ast/expr_extensions.rs b/crates/ra_syntax/src/ast/expr_extensions.rs index 1324965cf..25dbd0bed 100644 --- a/crates/ra_syntax/src/ast/expr_extensions.rs +++ b/crates/ra_syntax/src/ast/expr_extensions.rs @@ -289,6 +289,26 @@ impl ast::Literal { } } +impl ast::BlockExpr { + /// false if the block is an intrinsic part of the syntax and can't be + /// replaced with arbitrary expression. + /// + /// ```not_rust + /// fn foo() { not_stand_alone } + /// const FOO: () = { stand_alone }; + /// ``` + pub fn is_standalone(&self) -> bool { + let kind = match self.syntax().parent() { + None => return true, + Some(it) => it.kind(), + }; + match kind { + FN_DEF | MATCH_ARM | IF_EXPR | WHILE_EXPR | LOOP_EXPR | TRY_BLOCK_EXPR => false, + _ => true, + } + } +} + #[test] fn test_literal_with_attr() { let parse = ast::SourceFile::parse(r#"const _: &str = { #[attr] "Hello" };"#); -- cgit v1.2.3