feat: suppress withItem and withZeroItems method generation

Author: m31coding

src/M31.FluentApi.Generator/CodeGeneration/CodeBoardActors/MethodCreation/Collections/CollectionMethodCreator.cs

@@ -89,8 +89,13 @@ internal BuilderMethod CreateWithItemsParamsMethod(MethodCreator methodCreator)
             computeValueCode);
     }
 
-    internal BuilderMethod CreateWithItemMethod(MethodCreator methodCreator)
+    internal BuilderMethod? CreateWithItemMethod(MethodCreator methodCreator)
     {
+        if (collectionAttributeInfo.WithItem == null)
+        {
+            return null;
+        }
+
         Parameter parameter = new Parameter(genericTypeArgument, collectionAttributeInfo.SingularNameInCamelCase);
         return methodCreator.CreateMethodWithComputedValue(
             symbolInfo,
@@ -101,7 +106,7 @@ internal BuilderMethod CreateWithItemMethod(MethodCreator methodCreator)
 
     internal BuilderMethod? CreateWithItemLambdaMethod(MethodCreator methodCreator)
     {
-        if (collectionAttributeInfo.LambdaBuilderInfo == null)
+        if (collectionAttributeInfo.WithItem == null || collectionAttributeInfo.LambdaBuilderInfo == null)
         {
             return null;
         }
@@ -123,8 +128,13 @@ internal BuilderMethod CreateWithItemMethod(MethodCreator methodCreator)
             computeValueCode);
     }
 
-    internal BuilderMethod CreateWithZeroItemsMethod(MethodCreator methodCreator)
+    internal BuilderMethod? CreateWithZeroItemsMethod(MethodCreator methodCreator)
     {
+        if (collectionAttributeInfo.WithZeroItems == null)
+        {
+            return null;
+        }
+
         string collectionWithZeroItemsCode = CreateCollectionWithZeroItems(genericTypeArgument);
         return methodCreator.CreateMethodWithFixedValue(
             symbolInfo,

src/M31.FluentApi.Generator/SourceGenerators/AttributeInfo/FluentCollectionAttributeInfo.cs

@@ -10,8 +10,8 @@ private FluentCollectionAttributeInfo(
         int builderStep,
         string singularName,
         string withItems,
-        string withItem,
-        string withZeroItems,
+        string? withItem,
+        string? withZeroItems,
         LambdaBuilderInfo? lambdaBuilderInfo)
         : base(builderStep)
     {
@@ -26,8 +26,8 @@ private FluentCollectionAttributeInfo(
     internal string SingularName { get; }
     internal string SingularNameInCamelCase { get; }
     internal string WithItems { get; }
-    internal string WithItem { get; }
-    internal string WithZeroItems { get; }
+    internal string? WithItem { get; }
+    internal string? WithZeroItems { get; }
     internal LambdaBuilderInfo? LambdaBuilderInfo { get; }
     internal override string FluentMethodName => WithItems;
 
@@ -36,12 +36,20 @@ internal static FluentCollectionAttributeInfo Create(
         string memberName,
         LambdaBuilderInfo? lambdaBuilderInfo)
     {
-        (int builderStep, string singularName, string withItems, string withItem, string withZeroItems) =
-            attributeData.GetConstructorArguments<int, string, string, string, string>();
+        (int builderStep, string singularName, string withItems, string? withItem, string? withZeroItems) =
+            attributeData.GetConstructorArguments<int, string, string, string?, string?>();
 
         withItems = NameCreator.CreateName(withItems, memberName, singularName);
-        withItem = NameCreator.CreateName(withItem, memberName, singularName);
-        withZeroItems = NameCreator.CreateName(withZeroItems, memberName, singularName);
+
+        if (withItem != null)
+        {
+            withItem = NameCreator.CreateName(withItem, memberName, singularName);
+        }
+
+        if (withZeroItems != null)
+        {
+            withZeroItems = NameCreator.CreateName(withZeroItems, memberName, singularName);
+        }
 
         return new FluentCollectionAttributeInfo(
             builderStep, singularName, withItems, withItem, withZeroItems, lambdaBuilderInfo);

src/M31.FluentApi/Attributes/FluentCollectionAttribute.cs

@@ -14,16 +14,16 @@ public class FluentCollectionAttribute : Attribute
     /// <param name="builderStep">The builder step in which the collection can be set.</param>
     /// <param name="singularName">The singular of the collection name.</param>
     /// <param name="withItems">The name of the builder method that sets multiple items.</param>
-    /// <param name="withItem">The name of the builder method that sets a single item.</param>
+    /// <param name="withItem">The name of the builder method that sets a single item.
+    /// If set to null, the builder method will not be generated.</param>
     /// <param name="withZeroItems">The name of the builder method that sets zero items.
-    /// </param>
+    /// If set to null, the builder method will not be generated.</param>
     public FluentCollectionAttribute(
         int builderStep,
         string singularName,
         string withItems = "With{Name}",
-        string withItem = "With{SingularName}",
-        string withZeroItems = "WithZero{Name}")
+        string? withItem = "With{SingularName}",
+        string? withZeroItems = "WithZero{Name}")
     {
-
     }
 }