diff options
Diffstat (limited to 'src/mir/from_hir_match.cpp')
| -rw-r--r-- | src/mir/from_hir_match.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/mir/from_hir_match.cpp b/src/mir/from_hir_match.cpp index 0e1a94aa..43b60816 100644 --- a/src/mir/from_hir_match.cpp +++ b/src/mir/from_hir_match.cpp @@ -230,6 +230,7 @@ void MIR_LowerHIR_Match( MirBuilder& builder, MirConverter& conv, ::HIR::ExprNod { TRACE_FUNCTION_FR("ARM " << arm_idx, "ARM" << arm_idx); /*const*/ auto& arm = node.m_arms[arm_idx]; + const Span& sp = arm.m_code->span(); ArmCode ac; // Register introduced bindings to be dropped on return/diverge within this scope @@ -253,22 +254,27 @@ void MIR_LowerHIR_Match( MirBuilder& builder, MirConverter& conv, ::HIR::ExprNod DEBUG("ARM PAT (" << arm_idx << "," << pat_idx << ") " << pat << " ==> [" << pat_builder.m_rules << "]"); arm_rules.push_back( PatternRuleset { arm_idx, pat_idx, mv$(pat_builder.m_rules) } ); } + ac.destructures.push_back( builder.new_bb_unlinked() ); // - Emit code to destructure the matched pattern - ac.destructures.push_back( builder.new_bb_unlinked() ); builder.set_cur_block( ac.destructures.back() ); conv.destructure_from( arm.m_code->span(), pat, match_val.clone(), true ); builder.end_split_arm( arm.m_code->span(), pat_scope, /*reachable=*/false ); // HACK: Mark as not reachable, this scope isn't for codegen. builder.pause_cur_block(); // NOTE: Paused block resumed upon successful match } - builder.terminate_scope( arm.m_code->span(), mv$(pat_scope) ); + builder.terminate_scope( sp, mv$(pat_scope) ); // Condition // NOTE: Lack of drop due to early exit from this arm isn't an issue. All captures must be Copy // - The above is rustc E0008 "cannot bind by-move into a pattern guard" if(arm.m_cond) { + if( H::is_pattern_move(sp, builder, arm.m_patterns[0]) ) + ERROR(sp, E0000, "cannot bind by-move into a pattern guard"); + ac.has_condition = true; + ac.cond_start = builder.new_bb_unlinked(); + DEBUG("-- Condition Code"); ac.has_condition = true; ac.cond_start = builder.new_bb_unlinked(); |