bjoernager/rust
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More uses of the matches! macro

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This commit is contained in:
LingMan 2020-12-29 01:20:06 +01:00
parent 2987785df3
commit 7a41532ef9
2 changed files with 9 additions and 16 deletions
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14
compiler/rustc_ast/src/ast.rs
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@ -1092,15 +1092,9 @@ impl Expr {
if let ExprKind::Block(ref block, _) = self.kind {
match block.stmts.last().map(|last_stmt| &last_stmt.kind) {
// Implicit return
Some(&StmtKind::Expr(_)) => true,
Some(&StmtKind::Semi(ref expr)) => {
if let ExprKind::Ret(_) = expr.kind {
// Last statement is explicit return.
true
} else {
false
}
}
Some(StmtKind::Expr(_)) => true,
// Last statement is an explicit return?
Some(StmtKind::Semi(expr)) => matches!(expr.kind, ExprKind::Ret(_)),
// This is a block that doesn't end in either an implicit or explicit return.
_ => false,
}
@ -1950,7 +1944,7 @@ impl TyKind {
}
pub fn is_unit(&self) -> bool {
if let TyKind::Tup(ref tys) = *self { tys.is_empty() } else { false }
matches!(self, TyKind::Tup(tys) if tys.is_empty())
}
}