diff options
Diffstat (limited to 'compiler/rustc_mir_build/src/build/block.rs')
| -rw-r--r-- | compiler/rustc_mir_build/src/build/block.rs | 158 |
1 files changed, 67 insertions, 91 deletions
diff --git a/compiler/rustc_mir_build/src/build/block.rs b/compiler/rustc_mir_build/src/build/block.rs index ab4cd2488..8cad6976c 100644 --- a/compiler/rustc_mir_build/src/build/block.rs +++ b/compiler/rustc_mir_build/src/build/block.rs @@ -13,42 +13,33 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { ast_block: BlockId, source_info: SourceInfo, ) -> BlockAnd<()> { - let Block { - region_scope, - opt_destruction_scope, - span, - ref stmts, - expr, - targeted_by_break, - safety_mode, - } = self.thir[ast_block]; + let Block { region_scope, span, ref stmts, expr, targeted_by_break, safety_mode } = + self.thir[ast_block]; let expr = expr.map(|expr| &self.thir[expr]); - self.in_opt_scope(opt_destruction_scope.map(|de| (de, source_info)), move |this| { - this.in_scope((region_scope, source_info), LintLevel::Inherited, move |this| { - if targeted_by_break { - this.in_breakable_scope(None, destination, span, |this| { - Some(this.ast_block_stmts( - destination, - block, - span, - &stmts, - expr, - safety_mode, - region_scope, - )) - }) - } else { - this.ast_block_stmts( + self.in_scope((region_scope, source_info), LintLevel::Inherited, move |this| { + if targeted_by_break { + this.in_breakable_scope(None, destination, span, |this| { + Some(this.ast_block_stmts( destination, block, span, - &stmts, + stmts, expr, safety_mode, region_scope, - ) - } - }) + )) + }) + } else { + this.ast_block_stmts( + destination, + block, + span, + stmts, + expr, + safety_mode, + region_scope, + ) + } }) } @@ -92,20 +83,15 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let source_info = this.source_info(span); for stmt in stmts { - let Stmt { ref kind, opt_destruction_scope } = this.thir[*stmt]; + let Stmt { ref kind } = this.thir[*stmt]; match kind { StmtKind::Expr { scope, expr } => { this.block_context.push(BlockFrame::Statement { ignores_expr_result: true }); + let si = (*scope, source_info); unpack!( - block = this.in_opt_scope( - opt_destruction_scope.map(|de| (de, source_info)), - |this| { - let si = (*scope, source_info); - this.in_scope(si, LintLevel::Inherited, |this| { - this.stmt_expr(block, &this.thir[*expr], Some(*scope)) - }) - } - ) + block = this.in_scope(si, LintLevel::Inherited, |this| { + this.stmt_expr(block, &this.thir[*expr], Some(*scope)) + }) ); } StmtKind::Let { @@ -221,43 +207,38 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let init = &this.thir[*initializer]; let initializer_span = init.span; + let scope = (*init_scope, source_info); let failure = unpack!( - block = this.in_opt_scope( - opt_destruction_scope.map(|de| (de, source_info)), - |this| { - let scope = (*init_scope, source_info); - this.in_scope(scope, *lint_level, |this| { - this.declare_bindings( - visibility_scope, - remainder_span, - pattern, - None, - Some((Some(&destination), initializer_span)), - ); - this.visit_primary_bindings( - pattern, - UserTypeProjections::none(), - &mut |this, _, _, _, node, span, _, _| { - this.storage_live_binding( - block, - node, - span, - OutsideGuard, - true, - ); - }, - ); - this.ast_let_else( + block = this.in_scope(scope, *lint_level, |this| { + this.declare_bindings( + visibility_scope, + remainder_span, + pattern, + None, + Some((Some(&destination), initializer_span)), + ); + this.visit_primary_bindings( + pattern, + UserTypeProjections::none(), + &mut |this, _, _, _, node, span, _, _| { + this.storage_live_binding( block, - init, - initializer_span, - *else_block, - &last_remainder_scope, - pattern, - ) - }) - } - ) + node, + span, + OutsideGuard, + true, + ); + }, + ); + this.ast_let_else( + block, + init, + initializer_span, + *else_block, + &last_remainder_scope, + pattern, + ) + }) ); this.cfg.goto(failure, source_info, failure_entry); @@ -298,25 +279,20 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { if let Some(init) = initializer { let init = &this.thir[*init]; let initializer_span = init.span; + let scope = (*init_scope, source_info); unpack!( - block = this.in_opt_scope( - opt_destruction_scope.map(|de| (de, source_info)), - |this| { - let scope = (*init_scope, source_info); - this.in_scope(scope, *lint_level, |this| { - this.declare_bindings( - visibility_scope, - remainder_span, - pattern, - None, - Some((None, initializer_span)), - ); - this.expr_into_pattern(block, &pattern, init) - // irrefutable pattern - }) - }, - ) + block = this.in_scope(scope, *lint_level, |this| { + this.declare_bindings( + visibility_scope, + remainder_span, + pattern, + None, + Some((None, initializer_span)), + ); + this.expr_into_pattern(block, &pattern, init) + // irrefutable pattern + }) ) } else { let scope = (*init_scope, source_info); |