Make CBOR wire skip noexcept

Author: ky438

include/jsoncons_ext/cbor/cbor_view.hpp

@@ -774,7 +774,7 @@ namespace view {
 
         // Validates and passes over one complete item, returning its encoded
         // bytes unparsed. Costs and failure reporting match read_item.
-        expected<span<const uint8_t>, scan_error> skip_item(scan_context& context);
+        expected<span<const uint8_t>, scan_error> skip_item(scan_context& context) noexcept;
 
         // Advances past `count` bytes of already-measured content, such as a
         // definite string payload after its head. False, leaving the position
@@ -1574,18 +1574,26 @@ namespace view {
         return scanned.value().first;
     }
 
-    inline expected<span<const uint8_t>, scan_error> wire_cursor::skip_item(scan_context& context)
+    inline expected<span<const uint8_t>, scan_error> wire_cursor::skip_item(scan_context& context) noexcept
     {
         const uint8_t* const start = current_;
         std::error_code ec;
-        const bool ok = detail_view::skip_item(current_, end_, context.max_nesting_depth(),
-            detail_view::scan_access::workspace(context), ec);
-        if (!ok)
+        JSONCONS_TRY
+        {
+            const bool ok = detail_view::skip_item(current_, end_, context.max_nesting_depth(),
+                detail_view::scan_access::workspace(context), ec);
+            if (!ok)
+            {
+                return expected<span<const uint8_t>, scan_error>(unexpect,
+                    scan_error{detail_view::to_cbor_errc(ec), position()});
+            }
+            return span<const uint8_t>(start, static_cast<std::size_t>(current_ - start));
+        }
+        JSONCONS_CATCH(...)
         {
             return expected<span<const uint8_t>, scan_error>(unexpect,
-                scan_error{detail_view::to_cbor_errc(ec), position()});
+                scan_error{cbor_errc::source_error, position()});
         }
-        return span<const uint8_t>(start, static_cast<std::size_t>(current_ - start));
     }