Add a string representation for universal tresult

src/common/logging/vst3.cpp

@@ -63,9 +63,7 @@ void Vst3Logger::log_response(
                                         << ">";
                             },
                             [&](const UniversalTResult& code) {
-                                // TODO: Add a `UniversalTResult::string()` for
+                                message << code.string();
-                                //       the human readable representation
-                                message << code.native();
                             }},
                    result);
     });

src/common/serialization/vst3/base.cpp

@@ -55,6 +55,39 @@ tresult UniversalTResult::native() const {
     }
 }
 
+std::string UniversalTResult::string() const {
+    static_assert(Steinberg::kResultOk == Steinberg::kResultTrue);
+    switch (universal_result) {
+        case Value::kNoInterface:
+            return "kNoInterface";
+            break;
+        case Value::kResultOk:
+            return "kResultOk";
+            break;
+        case Value::kResultFalse:
+            return "kResultFalse";
+            break;
+        case Value::kInvalidArgument:
+            return "kInvalidArgument";
+            break;
+        case Value::kNotImplemented:
+            return "kNotImplemented";
+            break;
+        case Value::kInternalError:
+            return "kInternalError";
+            break;
+        case Value::kNotInitialized:
+            return "kNotInitialized";
+            break;
+        case Value::kOutOfMemory:
+            return "kOutOfMemory";
+            break;
+        default:
+            return "<invalid>";
+            break;
+    }
+}
+
 UniversalTResult::Value UniversalTResult::to_universal_result(
     tresult native_result) {
     static_assert(Steinberg::kResultOk == Steinberg::kResultTrue);

src/common/serialization/vst3/base.h

@@ -17,6 +17,7 @@
 #pragma once
 
 #include <array>
+#include <string>
 
 #include <pluginterfaces/base/ftypes.h>
 #include <pluginterfaces/base/funknown.h>
@@ -68,6 +69,11 @@ class UniversalTResult {
      */
     tresult native() const;
 
+    /**
+     * Get the original name for the result, e.g. `kResultOk`.
+     */
+    std::string string() const;
+
     template <typename S>
     void serialize(S& s) {
         s.value4b(universal_result);