diff options
Diffstat (limited to 'compiler/rustc_mir_build/src/build/expr/stmt.rs')
| -rw-r--r-- | compiler/rustc_mir_build/src/build/expr/stmt.rs | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/compiler/rustc_mir_build/src/build/expr/stmt.rs b/compiler/rustc_mir_build/src/build/expr/stmt.rs index 00dbcaeb0..780836851 100644 --- a/compiler/rustc_mir_build/src/build/expr/stmt.rs +++ b/compiler/rustc_mir_build/src/build/expr/stmt.rs @@ -6,10 +6,8 @@ use rustc_middle::thir::*; impl<'a, 'tcx> Builder<'a, 'tcx> { /// Builds a block of MIR statements to evaluate the THIR `expr`. - /// If the original expression was an AST statement, - /// (e.g., `some().code(&here());`) then `opt_stmt_span` is the - /// span of that statement (including its semicolon, if any). - /// The scope is used if a statement temporary must be dropped. + /// + /// The `statement_scope` is used if a statement temporary must be dropped. pub(crate) fn stmt_expr( &mut self, mut block: BasicBlock, @@ -59,7 +57,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { // question raised here -- should we "freeze" the // value of the lhs here? I'm inclined to think not, // since it seems closer to the semantics of the - // overloaded version, which takes `&mut self`. This + // overloaded version, which takes `&mut self`. This // only affects weird things like `x += {x += 1; x}` // -- is that equal to `x + (x + 1)` or `2*(x+1)`? @@ -115,7 +113,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { // // it is usually better to focus on `the_value` rather // than the entirety of block(s) surrounding it. - let adjusted_span = (|| { + let adjusted_span = if let ExprKind::Block { block } = expr.kind && let Some(tail_ex) = this.thir[block].expr { @@ -137,10 +135,10 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { tail_result_is_ignored: true, span: expr.span, }); - return Some(expr.span); - } - None - })(); + Some(expr.span) + } else { + None + }; let temp = unpack!(block = this.as_temp(block, statement_scope, expr, Mutability::Not)); |