Helper for field list generation

generator/src/main/java/org/sudu/protogen/generator/field/FieldGenerationHelper.java

@@ -0,0 +1,25 @@
+package org.sudu.protogen.generator.field;
+
+import com.squareup.javapoet.ParameterSpec;
+import org.sudu.protogen.descriptors.Message;
+import org.sudu.protogen.generator.GenerationContext;
+import org.sudu.protogen.utils.Poem;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+public class FieldGenerationHelper {
+
+    public static Stream<FieldProcessingResult> processAllFields(Message message, GenerationContext context) {
+        return message.getFields().stream()
+                .map(field -> context.generatorsHolder().generate(field))
+                .filter(FieldProcessingResult::isNonVoid);
+    }
+
+    public static List<ParameterSpec> processFieldsToParameters(Message message, GenerationContext context) {
+        return processAllFields(message, context)
+                .map(FieldProcessingResult::field)
+                .map(Poem::fieldToParameter)
+                .toList();
+    }
+}