[COMMITTED 020/145] gccrs: Change return type of resolve_nodeid_to_stmt

[arthur . cohen]

From: Pierre-Emmanuel Patry <pierre-emmanuel.pa...@embecosm.com>

Change the return type to an optional.

gcc/rust/ChangeLog:

        * util/rust-hir-map.cc (Mappings::resolve_nodeid_to_stmt): Change the
        return type and remove pointer out argument.
        * util/rust-hir-map.h: Update function prototype.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.pa...@embecosm.com>
---
 gcc/rust/util/rust-hir-map.cc | 10 ++++------
 gcc/rust/util/rust-hir-map.h  |  2 +-
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/gcc/rust/util/rust-hir-map.cc b/gcc/rust/util/rust-hir-map.cc
index b8d393759d6..57a766758d9 100644
--- a/gcc/rust/util/rust-hir-map.cc
+++ b/gcc/rust/util/rust-hir-map.cc
@@ -805,17 +805,15 @@ Mappings::lookup_location (HirId id)
   return it->second;
 }
 
-bool
-Mappings::resolve_nodeid_to_stmt (NodeId id, HIR::Stmt **stmt)
+tl::optional<HIR::Stmt *>
+Mappings::resolve_nodeid_to_stmt (NodeId id)
 {
   auto it = nodeIdToHirMappings.find (id);
   if (it == nodeIdToHirMappings.end ())
-    return false;
+    return tl::nullopt;
 
   HirId resolved = it->second;
-  auto resolved_stmt = lookup_hir_stmt (resolved);
-  *stmt = resolved_stmt;
-  return resolved_stmt != nullptr;
+  return {lookup_hir_stmt (resolved)};
 }
 
 void
diff --git a/gcc/rust/util/rust-hir-map.h b/gcc/rust/util/rust-hir-map.h
index 6fd0e7a52f4..6ed3beee8fc 100644
--- a/gcc/rust/util/rust-hir-map.h
+++ b/gcc/rust/util/rust-hir-map.h
@@ -176,7 +176,7 @@ public:
   void insert_location (HirId id, location_t locus);
   location_t lookup_location (HirId id);
 
-  bool resolve_nodeid_to_stmt (NodeId id, HIR::Stmt **stmt);
+  tl::optional<HIR::Stmt *> resolve_nodeid_to_stmt (NodeId id);
 
   std::set<HirId> &get_hirids_within_crate (CrateNum crate)
   {
-- 
2.45.2