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Merge #8620

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8620: Remove unnecessary braces for extracted block expression r=Veykril a=brandondong

This change addresses the first bullet point of https://github.com/rust-analyzer/rust-analyzer/issues/7839.

Specifically, when extracting block expressions, remove the unneeded extra braces inside the generated function.

Co-authored-by: Brandon <brandondong604@hotmail.com>
This commit is contained in:
bors[bot] 2021-04-22 15:22:43 +00:00 committed by GitHub
commit 0bb074aa26
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1 changed files with 22 additions and 14 deletions
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36
crates/ide_assists/src/handlers/extract_function.rs
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@ -1227,9 +1227,19 @@ fn make_body(
FunctionBody::Expr(expr) => {
let expr = rewrite_body_segment(ctx, &fun.params, &handler, expr.syntax());
let expr = ast::Expr::cast(expr).unwrap();
let expr = expr.dedent(old_indent).indent(IndentLevel(1));
match expr {
ast::Expr::BlockExpr(block) => {
// If the extracted expression is itself a block, there is no need to wrap it inside another block.
let block = block.dedent(old_indent);
// Recreate the block for formatting consistency with other extracted functions.
make::block_expr(block.statements(), block.tail_expr())
}
_ => {
let expr = expr.dedent(old_indent).indent(IndentLevel(1));
make::block_expr(Vec::new(), Some(expr))
make::block_expr(Vec::new(), Some(expr))
}
}
}
FunctionBody::Span { parent, text_range } => {
let mut elements: Vec<_> = parent
@ -1544,7 +1554,7 @@ fn foo() {
}
fn $0fun_name() -> i32 {
{ 1 + 1 }
1 + 1
}"#,
);
}
@ -2526,17 +2536,15 @@ fn foo() {
}
fn $0fun_name(n: &mut i32) {
{
*n += *n;
bar(*n);
bar(*n+1);
bar(*n**n);
bar(&*n);
n.inc();
let v = n;
*v = v.succ();
n.succ();
}
*n += *n;
bar(*n);
bar(*n+1);
bar(*n**n);
bar(&*n);
n.inc();
let v = n;
*v = v.succ();
n.succ();
}",
);
}