Refactor ViewManagerInterfaces codegen to generate kotlin classes (#51735)

packages/react-native-codegen/src/generators/components/GeneratePropsJavaInterface.js

@@ -48,19 +48,15 @@ const FileTemplate = ({
 * ${'@'}generated by codegen project: GeneratePropsJavaInterface.js
 */
 
-package ${packageName};
+package ${packageName}
 
 ${imports}
 
-public interface ${className}<T extends ${extendClasses}> extends ViewManagerWithGeneratedInterface {
+public interface ${className}<T: ${extendClasses}>: ViewManagerWithGeneratedInterface {
   ${methods}
 }
 `;
 
-function addNullable(imports: Set<string>) {
-  imports.add('import androidx.annotation.Nullable;');
-}
-
 function getJavaValueForProp(
   prop: NamedShape<PropTypeAnnotation>,
   imports: Set<string>,
@@ -70,65 +66,52 @@ function getJavaValueForProp(
   switch (typeAnnotation.type) {
     case 'BooleanTypeAnnotation':
       if (typeAnnotation.default === null) {
-        addNullable(imports);
-        return '@Nullable Boolean value';
+        return 'value: Boolean?';
       } else {
-        return 'boolean value';
+        return 'value: Boolean';
       }
     case 'StringTypeAnnotation':
-      addNullable(imports);
-      return '@Nullable String value';
+      return 'value: String?';
     case 'Int32TypeAnnotation':
-      return 'int value';
+      return 'value: Int';
     case 'DoubleTypeAnnotation':
-      return 'double value';
+      return 'value: Double';
     case 'FloatTypeAnnotation':
       if (typeAnnotation.default === null) {
-        addNullable(imports);
-        return '@Nullable Float value';
+        return 'value: Float?';
       } else {
-        return 'float value';
+        return 'value: Float';
       }
     case 'ReservedPropTypeAnnotation':
       switch (typeAnnotation.name) {
         case 'ColorPrimitive':
-          addNullable(imports);
-          return '@Nullable Integer value';
+          return 'value: Int?';
         case 'ImageSourcePrimitive':
-          addNullable(imports);
-          return '@Nullable ReadableMap value';
+          return 'value: ReadableMap?';
         case 'ImageRequestPrimitive':
-          addNullable(imports);
-          return '@Nullable ReadableMap value';
+          return 'value: ReadableMap?';
         case 'PointPrimitive':
-          addNullable(imports);
-          return '@Nullable ReadableMap value';
+          return 'value: ReadableMap?';
         case 'EdgeInsetsPrimitive':
-          addNullable(imports);
-          return '@Nullable ReadableMap value';
+          return 'value: ReadableMap?';
         case 'DimensionPrimitive':
-          addNullable(imports);
-          return '@Nullable YogaValue value';
+          return 'value: YogaValue?';
         default:
           (typeAnnotation.name: empty);
           throw new Error('Received unknown ReservedPropTypeAnnotation');
       }
     case 'ArrayTypeAnnotation': {
-      addNullable(imports);
-      return '@Nullable ReadableArray value';
+      return 'value: ReadableArray?';
     }
     case 'ObjectTypeAnnotation': {
-      addNullable(imports);
-      return '@Nullable ReadableMap value';
+      return 'value: ReadableMap?';
     }
     case 'StringEnumTypeAnnotation':
-      addNullable(imports);
-      return '@Nullable String value';
+      return 'value: String?';
     case 'Int32EnumTypeAnnotation':
-      addNullable(imports);
-      return '@Nullable Integer value';
+      return 'value: Int?';
     case 'MixedTypeAnnotation':
-      return 'Dynamic value';
+      return 'value: Dynamic';
     default:
       (typeAnnotation: empty);
       throw new Error('Received invalid typeAnnotation');
@@ -142,9 +125,9 @@ function generatePropsString(component: ComponentShape, imports: Set<string>) {
 
   return component.props
     .map(prop => {
-      return `void set${toSafeJavaString(
+      return `public fun set${toSafeJavaString(
         prop.name,
-      )}(T view, ${getJavaValueForProp(prop, imports)});`;
+      )}(view: T, ${getJavaValueForProp(prop, imports)}): Unit`;
     })
     .join('\n' + '  ');
 }
@@ -156,19 +139,19 @@ function getCommandArgJavaType(param: NamedShape<CommandParamTypeAnnotation>) {
     case 'ReservedTypeAnnotation':
       switch (typeAnnotation.name) {
         case 'RootTag':
-          return 'double';
+          return 'Double';
         default:
           (typeAnnotation.name: empty);
           throw new Error(`Receieved invalid type: ${typeAnnotation.name}`);
       }
     case 'BooleanTypeAnnotation':
-      return 'boolean';
+      return 'Boolean';
     case 'DoubleTypeAnnotation':
-      return 'double';
+      return 'Double';
     case 'FloatTypeAnnotation':
-      return 'float';
+      return 'Float';
     case 'Int32TypeAnnotation':
-      return 'int';
+      return 'Int';
     case 'StringTypeAnnotation':
       return 'String';
     case 'ArrayTypeAnnotation':
@@ -184,11 +167,11 @@ function getCommandArguments(
   componentName: string,
 ): string {
   return [
-    'T view',
+    'view: T',
     ...command.typeAnnotation.params.map(param => {
       const commandArgJavaType = getCommandArgJavaType(param);
 
-      return `${commandArgJavaType} ${param.name}`;
+      return `${param.name}: ${commandArgJavaType}`;
     }),
   ].join(', ');
 }
@@ -201,10 +184,10 @@ function generateCommandsString(
     .map(command => {
       const safeJavaName = toSafeJavaString(command.name, false);
 
-      return `void ${safeJavaName}(${getCommandArguments(
+      return `public fun ${safeJavaName}(${getCommandArguments(
         command,
         componentName,
-      )});`;
+      )}): Unit`;
     })
     .join('\n' + '  ');
 }
@@ -287,7 +270,7 @@ module.exports = {
               .trimRight(),
           });
 
-          files.set(`${outputDir}/${className}.java`, replacedTemplate);
+          files.set(`${outputDir}/${className}.kt`, replacedTemplate);
         });
     });