Merge pull request #917 from RSuter/master

Release v9.13.20

src/NJsonSchema.CodeGeneration.CSharp.Tests/ArrayTests.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using NJsonSchema.Annotations;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Threading.Tasks;
 using Xunit;
@@ -32,5 +33,28 @@ public async Task When_array_property_is_required_then_array_instance_can_be_cha
             //// Assert
             Assert.Contains("public Foo<string> ArrayProperty { get; set; } = new Bar<string>();", code);
         }
+
+        public class ClassWithNullableArrayItems
+        {
+            [NotNull]
+            [ItemsCanBeNull]
+            public List<int?> Items { get; set; }
+        }
+
+        [Fact]
+        public async Task When_array_item_is_nullable_then_generated_CSharp_is_correct()
+        {
+            // Arrange
+            var schema = await JsonSchema4.FromTypeAsync<ClassWithNullableArrayItems>();
+            var json = schema.ToJson();
+            var generator = new CSharpGenerator(schema, new CSharpGeneratorSettings());
+
+            // Act
+            var output = generator.GenerateFile("MyClass");
+
+            // Assert
+            Assert.True(schema.Properties["Items"].Item.IsNullable(SchemaType.JsonSchema));
+            Assert.Contains("System.Collections.ObjectModel.ObservableCollection<int?> Items", output);
+        }
     }
 }

src/NJsonSchema.CodeGeneration.CSharp/CSharpTypeResolver.cs

@@ -177,12 +177,14 @@ private static string ResolveNumber(JsonSchema4 schema, bool isNullable)
         private string ResolveArrayOrTuple(JsonSchema4 schema)
         {
             if (schema.Item != null)
-                return string.Format(Settings.ArrayType + "<{0}>", Resolve(schema.Item, false, null));
+            {
+                return string.Format(Settings.ArrayType + "<{0}>", Resolve(schema.Item, schema.Item.IsNullable(Settings.SchemaType), null));
+            }
 
             if (schema.Items != null && schema.Items.Count > 0)
             {
                 var tupleTypes = schema.Items
-                    .Select(i => Resolve(i, false, null))
+                    .Select(i => Resolve(i, i.IsNullable(Settings.SchemaType), null))
                     .ToArray();
 
                 return string.Format("System.Tuple<" + string.Join(", ", tupleTypes) + ">");

src/NJsonSchema.CodeGeneration.CSharp/NJsonSchema.CodeGeneration.CSharp.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard1.3;netstandard2.0;net451</TargetFrameworks>
     <Description>JSON Schema reader, generator and validator for .NET</Description>
-    <Version>9.13.19</Version>
+    <Version>9.13.20</Version>
     <PackageTags>json schema validation generator .net</PackageTags>
     <Copyright>Copyright © Rico Suter, 2018</Copyright>
     <PackageLicenseUrl>https://github.com/rsuter/NJsonSchema/blob/master/LICENSE.md</PackageLicenseUrl>

src/NJsonSchema.CodeGeneration.TypeScript.Tests/NullabilityTests.cs

@@ -1,5 +1,7 @@
-using NJsonSchema.CodeGeneration.TypeScript.Tests.Models;
+using NJsonSchema.Annotations;
+using NJsonSchema.CodeGeneration.TypeScript.Tests.Models;
 using NJsonSchema.Generation;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Xunit;
 
@@ -159,5 +161,32 @@ public async Task When_a_complex_property_is_nullable_then_default_is_null()
             // Assert
             Assert.DoesNotContain(": new ChildDto();", output);
         }
+
+        public class ClassWithNullableArrayItems
+        {
+            [NotNull]
+            [ItemsCanBeNull]
+            public List<string> Items { get; set; }
+        }
+
+        [Fact]
+        public async Task When_array_item_is_nullable_then_generated_TypeScript_is_correct()
+        {
+            // Arrange
+            var schema = await JsonSchema4.FromTypeAsync<ClassWithNullableArrayItems>();
+            var json = schema.ToJson();
+            var generator = new TypeScriptGenerator(schema, new TypeScriptGeneratorSettings
+            {
+                TypeScriptVersion = 2.7m,
+                NullValue = TypeScriptNullValue.Null
+            });
+
+            // Act
+            var output = generator.GenerateFile("MyClass");
+
+            // Assert
+            Assert.True(schema.Properties["Items"].Item.IsNullable(SchemaType.JsonSchema));
+            Assert.Contains(": (string | null)[]", output);
+        }
     }
 }

src/NJsonSchema.CodeGeneration.TypeScript/NJsonSchema.CodeGeneration.TypeScript.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard1.3;netstandard2.0;net451</TargetFrameworks>
     <Description>JSON Schema reader, generator and validator for .NET</Description>
-    <Version>9.13.19</Version>
+    <Version>9.13.20</Version>
     <PackageTags>json schema validation generator .net</PackageTags>
     <Copyright>Copyright © Rico Suter, 2018</Copyright>
     <PackageLicenseUrl>https://github.com/rsuter/NJsonSchema/blob/master/LICENSE.md</PackageLicenseUrl>

src/NJsonSchema.CodeGeneration.TypeScript/TypeScriptTypeResolver.cs

@@ -183,20 +183,33 @@ private string ResolveArrayOrTuple(JsonSchema4 schema, string typeNameHint, bool
             {
                 var isObject = schema.Item?.ActualSchema.Type.HasFlag(JsonObjectType.Object) == true;
                 var isDictionary = schema.Item?.ActualSchema.IsDictionary == true;
+
                 var prefix = addInterfacePrefix && SupportsConstructorConversion(schema.Item) && isObject && !isDictionary ? "I" : "";
-                return string.Format("{0}[]", prefix + Resolve(schema.Item, true, typeNameHint)); // TODO: Make typeNameHint singular if possible
+                var itemType = prefix + Resolve(schema.Item, true, typeNameHint);
+
+                return string.Format("{0}[]", GetNullableItemType(schema, itemType)); // TODO: Make typeNameHint singular if possible
             }
 
             if (schema.Items != null && schema.Items.Count > 0)
             {
                 var tupleTypes = schema.Items
-                    .Select(i => Resolve(i.ActualSchema, false, null))
+                    .Select(s => GetNullableItemType(s, Resolve(s, false, null)))
                     .ToArray();
 
                 return string.Format("[" + string.Join(", ", tupleTypes) + "]");
             }
 
             return "any[]";
         }
+
+        private string GetNullableItemType(JsonSchema4 schema, string itemType)
+        {
+            if (Settings.SupportsStrictNullChecks && schema.Item.IsNullable(Settings.SchemaType))
+            {
+                return string.Format("({0} | {1})", itemType, Settings.NullValue.ToString().ToLowerInvariant());
+            }
+
+            return itemType;
+        }
     }
 }

src/NJsonSchema.CodeGeneration.TypeScript/TypeScriptValueGenerator.cs

@@ -6,11 +6,22 @@
 // <author>Rico Suter, mail@rsuter.com</author>
 //-----------------------------------------------------------------------
 
+using System.Collections.Generic;
+
 namespace NJsonSchema.CodeGeneration.TypeScript
 {
     /// <summary>Converts the default value to a TypeScript identifier.</summary>
     public class TypeScriptValueGenerator : ValueGeneratorBase
     {
+        private readonly List<string> _formatCompatibleWithString = new List<string>()
+        {
+            JsonFormatStrings.Uri,
+            JsonFormatStrings.Guid,
+#pragma warning disable CS0618 // Type or member is obsolete
+            JsonFormatStrings.Uuid
+#pragma warning restore CS0618 // Type or member is obsolete
+        };
+
         /// <summary>Initializes a new instance of the <see cref="TypeScriptValueGenerator"/> class.</summary>
         /// <param name="settings">The settings.</param>
         public TypeScriptValueGenerator(TypeScriptGeneratorSettings settings)
@@ -31,6 +42,11 @@ public override string GetDefaultValue(JsonSchema4 schema, bool allowsNull, stri
             var value = base.GetDefaultValue(schema, allowsNull, targetType, typeNameHint, useSchemaDefault, typeResolver);
             if (value == null)
             {
+                if (schema.Type.HasFlag(JsonObjectType.String) && _formatCompatibleWithString.Contains(schema.Format))
+                {
+                    return "\"" + ConversionUtilities.ConvertToStringLiteral(value.ToString()) + "\"";
+                }
+
                 var isOptional = (schema as JsonProperty)?.IsRequired == false;
                 if (schema != null && allowsNull == false && isOptional == false)
                 {
@@ -66,4 +82,4 @@ public override string GetNumericValue(JsonObjectType type, object value, string
             return ConvertNumberToString(value);
         }
     }
-}
+}

src/NJsonSchema.CodeGeneration/NJsonSchema.CodeGeneration.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard1.3;netstandard2.0;net451</TargetFrameworks>
     <Description>JSON Schema reader, generator and validator for .NET</Description>
-    <Version>9.13.19</Version>
+    <Version>9.13.20</Version>
     <PackageTags>json schema validation generator .net</PackageTags>
     <Copyright>Copyright © Rico Suter, 2018</Copyright>
     <PackageLicenseUrl>https://github.com/rsuter/NJsonSchema/blob/master/LICENSE.md</PackageLicenseUrl>

src/NJsonSchema.CodeGeneration/ValueGeneratorBase.cs

@@ -6,6 +6,8 @@
 // <author>Rico Suter, mail@rsuter.com</author>
 //-----------------------------------------------------------------------
 
+using System;
+using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 
@@ -15,7 +17,21 @@ namespace NJsonSchema.CodeGeneration
     public abstract class ValueGeneratorBase
     {
         private readonly CodeGeneratorSettingsBase _settings;
-
+        private readonly List<string> _formatNotCompatibleWithString = new List<string>()
+        {
+            JsonFormatStrings.Date,
+            JsonFormatStrings.DateTime,
+            JsonFormatStrings.Time,
+            JsonFormatStrings.TimeSpan,
+            JsonFormatStrings.Uri,
+            JsonFormatStrings.Guid,
+            JsonFormatStrings.Byte,
+#pragma warning disable CS0618 // Type or member is obsolete
+            JsonFormatStrings.Uuid,
+            JsonFormatStrings.Base64,
+#pragma warning restore CS0618 // Type or member is obsolete
+        };
+
         /// <summary>Initializes a new instance of the <see cref="ValueGeneratorBase" /> class.</summary>
         /// <param name="settings">The settings.</param>
         protected ValueGeneratorBase(CodeGeneratorSettingsBase settings)
@@ -41,7 +57,8 @@ public virtual string GetDefaultValue(JsonSchema4 schema, bool allowsNull, strin
                 return GetEnumDefaultValue(schema, actualSchema, typeNameHint, typeResolver);
 
             if (schema.Type.HasFlag(JsonObjectType.String))
-                return "\"" + ConversionUtilities.ConvertToStringLiteral(schema.Default.ToString()) + "\"";
+                return GetStringValue(schema.Type, schema.Default, schema.Format);
+
             if (schema.Type.HasFlag(JsonObjectType.Boolean))
                 return schema.Default.ToString().ToLowerInvariant();
             if (schema.Type.HasFlag(JsonObjectType.Integer) ||
@@ -51,6 +68,14 @@ public virtual string GetDefaultValue(JsonSchema4 schema, bool allowsNull, strin
             return null;
         }
 
+        private string GetStringValue(JsonObjectType type, object value, string format)
+        {
+            if(!_formatNotCompatibleWithString.Contains(format))
+                return "\"" + ConversionUtilities.ConvertToStringLiteral(value.ToString()) + "\"";
+            else
+                return null;
+        }
+
         /// <summary>Converts the default value to a number literal. </summary>
         /// <param name="type">The JSON type.</param>
         /// <param name="value">The value to convert.</param>
@@ -117,4 +142,4 @@ protected string ConvertNumberToString(object value)
             return null;
         }
     }
-}
+}

src/NJsonSchema.Yaml/NJsonSchema.Yaml.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard1.3;netstandard2.0;net45</TargetFrameworks>
     <Description>JSON Schema reader, generator and validator for .NET</Description>
-    <Version>9.13.19</Version>
+    <Version>9.13.20</Version>
     <PackageTags>json schema validation generator .net</PackageTags>
     <Copyright>Copyright © Rico Suter, 2018</Copyright>
     <PackageLicenseUrl>https://github.com/rsuter/NJsonSchema/blob/master/LICENSE.md</PackageLicenseUrl>

src/NJsonSchema/Annotations/ItemsCanBeNullAttribute.cs

@@ -0,0 +1,18 @@
+//-----------------------------------------------------------------------
+// <copyright file="ItemsCanBeNullAttribute.cs" company="NJsonSchema">
+//     Copyright (c) Rico Suter. All rights reserved.
+// </copyright>
+// <license>https://github.com/rsuter/NJsonSchema/blob/master/LICENSE.md</license>
+// <author>Rico Suter, mail@rsuter.com</author>
+//-----------------------------------------------------------------------
+
+using System;
+
+namespace NJsonSchema.Annotations
+{
+    /// <summary>Annotation to specify that array items are nullable.</summary>
+    [AttributeUsage(AttributeTargets.Property | AttributeTargets.Parameter | AttributeTargets.ReturnValue | AttributeTargets.Field)]
+    public class ItemsCanBeNullAttribute : Attribute
+    {
+    }
+}

src/NJsonSchema/Generation/JsonSchemaGenerator.cs

@@ -159,7 +159,7 @@ public virtual async Task GenerateAsync<TSchemaType>(Type type, IEnumerable<Attr
             else if (typeDescription.IsEnum)
                 await GenerateEnum(schema, type, parentAttributes, typeDescription, schemaResolver).ConfigureAwait(false);
             else if (typeDescription.Type.HasFlag(JsonObjectType.Array)) // TODO: Add support for tuples?
-                await GenerateArray(schema, type, typeDescription, schemaResolver).ConfigureAwait(false);
+                await GenerateArray(schema, type, parentAttributes, typeDescription, schemaResolver).ConfigureAwait(false);
             else
                 typeDescription.ApplyType(schema);
 
@@ -442,28 +442,36 @@ private async Task<bool> TryHandleSpecialTypesAsync<TSchemaType>(Type type, TSch
         }
 
         private async Task GenerateArray<TSchemaType>(
-            TSchemaType schema, Type type, JsonTypeDescription typeDescription, JsonSchemaResolver schemaResolver)
+            TSchemaType schema, Type type, IEnumerable<Attribute> parentAttributes, JsonTypeDescription typeDescription, JsonSchemaResolver schemaResolver)
             where TSchemaType : JsonSchema4, new()
         {
+#pragma warning disable 1998
+
             typeDescription.ApplyType(schema);
 
             var itemType = type.GetEnumerableItemType();
             if (itemType != null)
             {
                 schema.Item = await GenerateWithReferenceAndNullabilityAsync<JsonSchema4>(
-#pragma warning disable 1998
-                    itemType, null, false, schemaResolver, async (s, r) =>
-#pragma warning restore 1998
+                    itemType, null, parentAttributes?.OfType<ItemsCanBeNullAttribute>().Any() == true, schemaResolver, async (s, r) =>
                     {
                         if (Settings.GenerateXmlObjects)
+                        {
                             s.GenerateXmlObjectForItemType(itemType);
+                        }
                     }).ConfigureAwait(false);
 
                 if (Settings.GenerateXmlObjects)
+                {
                     schema.GenerateXmlObjectForArrayType(type);
+                }
             }
             else
+            {
                 schema.Item = JsonSchema4.CreateAnySchema();
+            }
+
+#pragma warning restore 1998
         }
 
         private async Task GenerateEnum<TSchemaType>(

src/NJsonSchema/NJsonSchema.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard1.0;netstandard2.0;net40;net45</TargetFrameworks>
     <Description>JSON Schema reader, generator and validator for .NET</Description>
-    <Version>9.13.19</Version>
+    <Version>9.13.20</Version>
     <PackageTags>json schema validation generator .net</PackageTags>
     <Copyright>Copyright © Rico Suter, 2018</Copyright>
     <PackageLicenseUrl>https://github.com/rsuter/NJsonSchema/blob/master/LICENSE.md</PackageLicenseUrl>