Make json_t embeddable in value_t (copied).

Author: evoskuil

include/bitcoin/network/messages/rpc/model.hpp

@@ -74,7 +74,10 @@ struct value_t
 
         /// type-erased shared_ptr<Type>, not json deserializable.
         /// Pass ptr via any_t and specify it directly in the handler.
-        any_t
+        any_t,
+
+        /// Embeds json DOM.
+        json_t
     >;
 
     /// Explicit initialization constructors.
@@ -96,6 +99,8 @@ struct value_t
     value_t(uint16_t value) NOEXCEPT : inner_{ value } {}
     value_t(uint32_t value) NOEXCEPT : inner_{ value } {}
     value_t(uint64_t value) NOEXCEPT : inner_{ value } {}
+    value_t(const json_t& value) NOEXCEPT : inner_{ value } {}
+    value_t(json_t&& value) NOEXCEPT : inner_{ std::move(value) } {}
     value_t(const any_t& value) NOEXCEPT : inner_{ value } {}
     value_t(any_t&& value) NOEXCEPT : inner_{ std::move(value) } {}
 
@@ -115,6 +120,7 @@ struct value_t
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, uint16_t, inner_)
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, uint32_t, inner_)
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, uint64_t, inner_)
+    ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, json_t, inner_)
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, any_t, inner_)
 
     inner_t& value() NOEXCEPT

src/messages/rpc/model.cpp

@@ -112,6 +112,11 @@ DEFINE_JSON_FROM_TAG(value_t)
         {
             value = visit;
         },
+        [&](const json_t& visit) NOEXCEPT
+        {
+            // This is a deep copy.
+            value = visit;
+        },
         [&](const array_t& visit) THROWS
         {
             value.emplace_array();