Fix regression when setting shadow node properties in D38272966 (github PR merge)

Summary:
Changelog:

[Android][Fixed] - Fix regression when setting shadow node properties.

Also simplified the corresponding macros to avoid using lambdas altogether, as they are not required.

Note that this **does not** modify any constexpr-related semantics of the existing code, as the main constexpr macro, `CONSTEXPR_RAW_PROPS_KEY_HASH` evaluation result is still contstexpr value, and the other ones already involved non-const parts (see my comments).

Reviewed By: NickGerleman

Differential Revision: D38356411

fbshipit-source-id: 22c330d3425c8aed36693f4652f1b257d2dc96be

Author: rshest

ReactCommon/react/renderer/components/text/BaseTextProps.cpp

@@ -12,20 +12,17 @@
 #include <react/renderer/debug/DebugStringConvertibleItem.h>
 #include <react/renderer/graphics/conversions.h>
 
-#define GET_FIELD_VALUE(field, fieldName, defaultValue, rawValue) \
-  (rawValue.hasValue() ? ([&rawValue, &context] {                 \
-    decltype(defaultValue) res;                                   \
-    fromRawValue(context, rawValue, res);                         \
-    return res;                                                   \
-  }())                                                            \
-                       : defaultValue);
-
-#define REBUILD_FIELD_SWITCH_CASE(                                   \
-    defaults, rawValue, property, field, fieldName)                  \
-  case CONSTEXPR_RAW_PROPS_KEY_HASH(fieldName): {                    \
-    property.field =                                                 \
-        GET_FIELD_VALUE(field, fieldName, defaults.field, rawValue); \
-    return;                                                          \
+#define REBUILD_FIELD_SWITCH_CASE(                  \
+    defaults, rawValue, property, field, fieldName) \
+  case CONSTEXPR_RAW_PROPS_KEY_HASH(fieldName): {   \
+    if (rawValue.hasValue()) {                      \
+      decltype(defaults.field) res;                 \
+      fromRawValue(context, rawValue, res);         \
+      property.field = res;                         \
+    } else {                                        \
+      property.field = defaults.field;              \
+    }                                               \
+    return;                                         \
   }
 
 namespace facebook {

ReactCommon/react/renderer/components/view/ViewProps.cpp

@@ -258,18 +258,15 @@ ViewProps::ViewProps(
 #endif
           {};
 
-#define VIEW_EVENT_CASE(eventType, eventString)                               \
-  case CONSTEXPR_RAW_PROPS_KEY_HASH(eventString): {                           \
-    ViewEvents defaultViewEvents{};                                           \
-    events[eventType] = [ defaultViewEvents, &value, &context ]() constexpr { \
-      bool res = defaultViewEvents[eventType];                                \
-      if (value.hasValue()) {                                                 \
-        fromRawValue(context, value, res);                                    \
-      }                                                                       \
-      return res;                                                             \
-    }                                                                         \
-    ();                                                                       \
-    return;                                                                   \
+#define VIEW_EVENT_CASE(eventType, eventString)     \
+  case CONSTEXPR_RAW_PROPS_KEY_HASH(eventString): { \
+    ViewEvents defaultViewEvents{};                 \
+    bool res = defaultViewEvents[eventType];        \
+    if (value.hasValue()) {                         \
+      fromRawValue(context, value, res);            \
+    }                                               \
+    events[eventType] = res;                        \
+    return;                                         \
   }
 
 void ViewProps::setProp(

ReactCommon/react/renderer/core/ConcreteComponentDescriptor.h

@@ -119,7 +119,7 @@ class ConcreteComponentDescriptor : public ComponentDescriptor {
       rawProps.iterateOverValues([&](RawPropsPropNameHash hash,
                                      const char *propName,
                                      RawValue const &fn) {
-        shadowNodeProps.get()->Props::setProp(context, hash, propName, fn);
+        shadowNodeProps.get()->setProp(context, hash, propName, fn);
       });
     }
 

ReactCommon/react/renderer/core/PropsMacros.h

@@ -19,7 +19,7 @@
 
 // Get hash at compile-time. sizeof(str) - 1 == strlen
 #define CONSTEXPR_RAW_PROPS_KEY_HASH(s)                   \
-  ([]() constexpr {                                       \
+  ([]() constexpr->RawPropsPropNameHash {                 \
     CLANG_PRAGMA("clang diagnostic push")                 \
     CLANG_PRAGMA("clang diagnostic ignored \"-Wshadow\"") \
     return folly::hash::fnv32_buf(s, sizeof(s) - 1);      \