diff options
Diffstat (limited to 'gcc/rust/resolve/rust-ast-resolve-expr.cc')
| -rw-r--r-- | gcc/rust/resolve/rust-ast-resolve-expr.cc | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc/rust/resolve/rust-ast-resolve-expr.cc b/gcc/rust/resolve/rust-ast-resolve-expr.cc index 402c048..4bf35ef 100644 --- a/gcc/rust/resolve/rust-ast-resolve-expr.cc +++ b/gcc/rust/resolve/rust-ast-resolve-expr.cc @@ -421,6 +421,53 @@ ResolveExpr::visit (AST::WhileLoopExpr &expr) } void +ResolveExpr::visit (AST::ForLoopExpr &expr) +{ + if (expr.has_loop_label ()) + { + auto label = expr.get_loop_label (); + if (label.get_lifetime ().get_lifetime_type () + != AST::Lifetime::LifetimeType::NAMED) + { + rust_error_at (label.get_locus (), + "Labels must be a named lifetime value"); + return; + } + + auto label_name = label.get_lifetime ().get_lifetime_name (); + auto label_lifetime_node_id = label.get_lifetime ().get_node_id (); + resolver->get_label_scope ().insert ( + CanonicalPath::new_seg (label.get_node_id (), label_name), + label_lifetime_node_id, label.get_locus (), false, + [&] (const CanonicalPath &, NodeId, Location locus) -> void { + rust_error_at (label.get_locus (), "label redefined multiple times"); + rust_error_at (locus, "was defined here"); + }); + resolver->insert_new_definition (label_lifetime_node_id, + Definition{label_lifetime_node_id, + label.get_node_id ()}); + } + + // this needs a new rib to contain the pattern + NodeId scope_node_id = expr.get_node_id (); + resolver->get_name_scope ().push (scope_node_id); + resolver->get_type_scope ().push (scope_node_id); + resolver->get_label_scope ().push (scope_node_id); + resolver->push_new_name_rib (resolver->get_name_scope ().peek ()); + resolver->push_new_type_rib (resolver->get_type_scope ().peek ()); + resolver->push_new_label_rib (resolver->get_type_scope ().peek ()); + + // resolve the expression + PatternDeclaration::go (expr.get_pattern ().get (), expr.get_node_id ()); + resolve_expr (expr.get_iterator_expr ().get (), expr.get_node_id ()); + resolve_expr (expr.get_loop_block ().get (), expr.get_node_id ()); + + resolver->get_name_scope ().pop (); + resolver->get_type_scope ().pop (); + resolver->get_label_scope ().pop (); +} + +void ResolveExpr::visit (AST::ContinueExpr &expr) { if (expr.has_label ()) |