replace 'const std::string&' with 'std::string'(by value)

src/google/protobuf/extension_set.h

@@ -268,8 +268,7 @@ class PROTOBUF_EXPORT ExtensionSet {
   void SetDouble(int number, FieldType type, double value, desc);
   void SetBool(int number, FieldType type, bool value, desc);
   void SetEnum(int number, FieldType type, int value, desc);
-  void SetString(int number, FieldType type, const std::string& value, desc);
-  void SetString(int number, FieldType type, std::string&& value, desc);
+  void SetString(int number, FieldType type, std::string value, desc);
   std::string* MutableString(int number, FieldType type, desc);
   MessageLite* MutableMessage(int number, FieldType type,
                               const MessageLite& prototype, desc);
@@ -332,8 +331,7 @@ class PROTOBUF_EXPORT ExtensionSet {
   void SetRepeatedDouble(int number, int index, double value);
   void SetRepeatedBool(int number, int index, bool value);
   void SetRepeatedEnum(int number, int index, int value);
-  void SetRepeatedString(int number, int index, const std::string& value);
-  void SetRepeatedString(int number, int index, std::string&& value);
+  void SetRepeatedString(int number, int index, std::string value);
   std::string* MutableRepeatedString(int number, int index);
   MessageLite* MutableRepeatedMessage(int number, int index);
 
@@ -346,8 +344,7 @@ class PROTOBUF_EXPORT ExtensionSet {
   void AddDouble(int number, FieldType type, bool packed, double value, desc);
   void AddBool(int number, FieldType type, bool packed, bool value, desc);
   void AddEnum(int number, FieldType type, bool packed, int value, desc);
-  void AddString(int number, FieldType type, const std::string& value, desc);
-  void AddString(int number, FieldType type, std::string&& value, desc);
+  void AddString(int number, FieldType type, std::string value, desc);
   std::string* AddString(int number, FieldType type, desc);
   MessageLite* AddMessage(int number, FieldType type,
                           const MessageLite& prototype, desc);
@@ -861,32 +858,18 @@ class PROTOBUF_EXPORT ExtensionSet {
 
 // These are just for convenience...
 inline void ExtensionSet::SetString(int number, FieldType type,
-                                    const std::string& value,
+                                    std::string value,
                                     const FieldDescriptor* descriptor) {
-  MutableString(number, type, descriptor)->assign(value);
-}
-inline void ExtensionSet::SetString(int number, FieldType type,
-                                    std::string&& value,
-                                    const FieldDescriptor* descriptor) {
-  *MutableString(number, type, descriptor) = std::move(value);
-}
-inline void ExtensionSet::SetRepeatedString(int number, int index,
-                                            const std::string& value) {
-  MutableRepeatedString(number, index)->assign(value);
+  MutableString(number, type, descriptor)->assign(std::move(value));
 }
 inline void ExtensionSet::SetRepeatedString(int number, int index,
-                                            std::string&& value) {
-  *MutableRepeatedString(number, index) = std::move(value);
-}
-inline void ExtensionSet::AddString(int number, FieldType type,
-                                    const std::string& value,
-                                    const FieldDescriptor* descriptor) {
-  AddString(number, type, descriptor)->assign(value);
+                                            std::string value) {
+  MutableRepeatedString(number, index)->assign(std::move(value));
 }
 inline void ExtensionSet::AddString(int number, FieldType type,
-                                    std::string&& value,
+                                    std::string value,
                                     const FieldDescriptor* descriptor) {
-  *AddString(number, type, descriptor) = std::move(value);
+  AddString(number, type, descriptor)->assign(std::move(value));
 }
 // ===================================================================
 // Glue for generated extension accessors

src/google/protobuf/generated_message_reflection.cc

@@ -1191,40 +1191,7 @@ const std::string& Reflection::GetStringReference(const Message& message,
 
 
 void Reflection::SetString(Message* message, const FieldDescriptor* field,
-                           const std::string& value) const {
-  USAGE_CHECK_ALL(SetString, SINGULAR, STRING);
-  if (field->is_extension()) {
-    return MutableExtensionSet(message)->SetString(field->number(),
-                                                   field->type(), value, field);
-  } else {
-    switch (field->options().ctype()) {
-      default:  // TODO(kenton):  Support other string reps.
-      case FieldOptions::STRING: {
-        if (IsInlined(field)) {
-          MutableField<InlinedStringField>(message, field)
-              ->SetNoArena(nullptr, value);
-          break;
-        }
-
-        const std::string* default_ptr =
-            &DefaultRaw<ArenaStringPtr>(field).Get();
-        if (field->containing_oneof() && !HasOneofField(*message, field)) {
-          ClearOneof(message, field->containing_oneof());
-          MutableField<ArenaStringPtr>(message, field)
-              ->UnsafeSetDefault(default_ptr);
-        }
-        MutableField<ArenaStringPtr>(message, field)
-            ->Mutable(default_ptr, GetArena(message))
-            ->assign(value);
-        break;
-      }
-    }
-  }
-}
-
-
-void Reflection::SetString(Message* message, const FieldDescriptor* field,
-                           std::string&& value) const {
+                           std::string value) const {
   USAGE_CHECK_ALL(SetString, SINGULAR, STRING);
   if (field->is_extension()) {
     return MutableExtensionSet(message)->SetString(field->number(),
@@ -1235,7 +1202,7 @@ void Reflection::SetString(Message* message, const FieldDescriptor* field,
       case FieldOptions::STRING: {
         if (IsInlined(field)) {
           MutableField<InlinedStringField>(message, field)
-              ->SetNoArena(nullptr, value);
+              ->SetNoArena(nullptr, std::move(value));
           break;
         }
 
@@ -1246,8 +1213,8 @@ void Reflection::SetString(Message* message, const FieldDescriptor* field,
           MutableField<ArenaStringPtr>(message, field)
               ->UnsafeSetDefault(default_ptr);
         }
-        *(MutableField<ArenaStringPtr>(message, field)
-            ->Mutable(default_ptr, GetArena(message))) = std::move(value);
+        MutableField<ArenaStringPtr>(message, field)
+            ->Mutable(default_ptr, GetArena(message))->assign(std::move(value));
         break;
       }
     }
@@ -1288,25 +1255,7 @@ const std::string& Reflection::GetRepeatedStringReference(
 
 void Reflection::SetRepeatedString(Message* message,
                                    const FieldDescriptor* field, int index,
-                                   const std::string& value) const {
-  USAGE_CHECK_ALL(SetRepeatedString, REPEATED, STRING);
-  if (field->is_extension()) {
-    MutableExtensionSet(message)->SetRepeatedString(field->number(), index,
-                                                    value);
-  } else {
-    switch (field->options().ctype()) {
-      default:  // TODO(kenton):  Support other string reps.
-      case FieldOptions::STRING:
-        *MutableRepeatedField<std::string>(message, field, index) = value;
-        break;
-    }
-  }
-}
-
-
-void Reflection::SetRepeatedString(Message* message,
-                                   const FieldDescriptor* field, int index,
-                                   std::string&& value) const {
+                                   std::string value) const {
   USAGE_CHECK_ALL(SetRepeatedString, REPEATED, STRING);
   if (field->is_extension()) {
     MutableExtensionSet(message)->SetRepeatedString(field->number(), index,
@@ -1315,23 +1264,7 @@ void Reflection::SetRepeatedString(Message* message,
     switch (field->options().ctype()) {
       default:  // TODO(kenton):  Support other string reps.
       case FieldOptions::STRING:
-        *MutableRepeatedField<std::string>(message, field, index) = std::move(value);
-        break;
-    }
-  }
-}
-
-void Reflection::AddString(Message* message, const FieldDescriptor* field,
-                           const std::string& value) const {
-  USAGE_CHECK_ALL(AddString, REPEATED, STRING);
-  if (field->is_extension()) {
-    MutableExtensionSet(message)->AddString(field->number(), field->type(),
-                                            value, field);
-  } else {
-    switch (field->options().ctype()) {
-      default:  // TODO(kenton):  Support other string reps.
-      case FieldOptions::STRING:
-        *AddField<std::string>(message, field) = value;
+        MutableRepeatedField<std::string>(message, field, index)->assign(std::move(value));
         break;
     }
   }
@@ -1339,7 +1272,7 @@ void Reflection::AddString(Message* message, const FieldDescriptor* field,
 
 
 void Reflection::AddString(Message* message, const FieldDescriptor* field,
-                           std::string&& value) const {
+                           std::string value) const {
   USAGE_CHECK_ALL(AddString, REPEATED, STRING);
   if (field->is_extension()) {
     MutableExtensionSet(message)->AddString(field->number(), field->type(),
@@ -1348,12 +1281,13 @@ void Reflection::AddString(Message* message, const FieldDescriptor* field,
     switch (field->options().ctype()) {
       default:  // TODO(kenton):  Support other string reps.
       case FieldOptions::STRING:
-        *AddField<std::string>(message, field) = std::move(value);
+        AddField<std::string>(message, field)->assign(std::move(value));
         break;
     }
   }
 }
 
+
 // -------------------------------------------------------------------
 
 const EnumValueDescriptor* Reflection::GetEnum(

src/google/protobuf/message.h

@@ -539,9 +539,7 @@ class PROTOBUF_EXPORT Reflection final {
   void SetBool(Message* message, const FieldDescriptor* field,
                bool value) const;
   void SetString(Message* message, const FieldDescriptor* field,
-                 const std::string& value) const;
-  void SetString(Message* message, const FieldDescriptor* field,
-                 std::string&& value) const;
+                 std::string value) const;
   void SetEnum(Message* message, const FieldDescriptor* field,
                const EnumValueDescriptor* value) const;
   // Set an enum field's value with an integer rather than EnumValueDescriptor.
@@ -641,9 +639,7 @@ class PROTOBUF_EXPORT Reflection final {
   void SetRepeatedBool(Message* message, const FieldDescriptor* field,
                        int index, bool value) const;
   void SetRepeatedString(Message* message, const FieldDescriptor* field,
-                         int index, const std::string& value) const;
-  void SetRepeatedString(Message* message, const FieldDescriptor* field,
-                         int index, std::string&& value) const;
+                         int index, std::string value) const;
   void SetRepeatedEnum(Message* message, const FieldDescriptor* field,
                        int index, const EnumValueDescriptor* value) const;
   // Set an enum field's value with an integer rather than EnumValueDescriptor.
@@ -680,9 +676,7 @@ class PROTOBUF_EXPORT Reflection final {
   void AddBool(Message* message, const FieldDescriptor* field,
                bool value) const;
   void AddString(Message* message, const FieldDescriptor* field,
-                 const std::string& value) const;
-  void AddString(Message* message, const FieldDescriptor* field,
-                 std::string&& value) const;
+                 std::string value) const;
   void AddEnum(Message* message, const FieldDescriptor* field,
                const EnumValueDescriptor* value) const;
   // Add an integer value to a repeated enum field rather than