Merge #3700

3700: fill match arms with empty block rather than unit tuple r=matklad a=JoshMcguigan

As requested by @Veetaha in #3689 and #3687, this modifies the fill match arms assist to create match arms as an empty block `{}` rather than a unit tuple `()`.

In one test I left one of the pre-existing match arms as a unit tuple, and added a body to another match arm, to demonstrate that the contents of existing match arms persist. 

Co-authored-by: Josh Mcguigan <[email protected]>

1 files changed, 3 insertions, 0 deletions

diff --git a/crates/ra_syntax/src/ast/make.rs b/crates/ra_syntax/src/ast/make.rs
index 9257ccd1a..1145b69e8 100644
--- a/crates/ra_syntax/src/ast/make.rs
+++ b/crates/ra_syntax/src/ast/make.rs
@@ -87,6 +87,9 @@ pub fn block_from_expr(e: ast::Expr) -> ast::Block {
 pub fn expr_unit() -> ast::Expr {
     expr_from_text("()")
 }
+pub fn expr_empty_block() -> ast::Expr {
+    expr_from_text("{}")
+}
 pub fn expr_unimplemented() -> ast::Expr {
     expr_from_text("unimplemented!()")
 }