Рыбин Леонид

ObjectPrinting/Extensions/CultureExtension.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Globalization;
+
+namespace ObjectPrinting.Extensions;
+
+public static class CultureExtension
+{
+    public static PrintingConfig<TOwner> UseCulture<TOwner, TPropType>(
+        this PropertyPrintingConfiguration<TOwner, TPropType> propertyStringConfiguration,
+        CultureInfo culture) where TPropType : IFormattable
+    {
+        propertyStringConfiguration.ParentConfig.AddTypeSerializer<TPropType>(t => ((TPropType)t).ToString(null, culture));
+
+        return propertyStringConfiguration.ParentConfig;
+    }
+}

ObjectPrinting/Extensions/ObjectPrinterExtension.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace ObjectPrinting.Extensions;
+
+public static class ObjectPrinterExtension
+{
+    public static string PrintToString<T>(this T obj) =>
+        ObjectPrinter.For<T>().PrintToString(obj);
+
+    public static string PrintToString<T>(this T obj, Func<PrintingConfig<T>, PrintingConfig<T>> config) =>
+        config(ObjectPrinter.For<T>()).PrintToString(obj);
+}

ObjectPrinting/Extensions/StringPrintingConfigurationExtension.cs

@@ -0,0 +1,13 @@
+namespace ObjectPrinting.Extensions;
+
+public static class StringPrintingConfigurationExtension
+{
+    public static PrintingConfig<TOwner> TrimmedToLength<TOwner>(
+        this PropertyPrintingConfiguration<TOwner, string> propertyStringConfiguration, int length)
+    {
+        propertyStringConfiguration.ParentConfig
+            .AddStringPropertyTrim(propertyStringConfiguration.PropertyMemberInfo.Name, length);
+
+        return propertyStringConfiguration.ParentConfig;
+    }
+}

ObjectPrinting/ObjectPrinting.csproj

@@ -5,6 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="FluentAssertions" Version="7.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="NUnit" Version="4.2.2" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />

ObjectPrinting/PrintingConfig.cs

@@ -1,41 +1,180 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
 using System.Text;
 
 namespace ObjectPrinting
 {
     public class PrintingConfig<TOwner>
     {
+        private readonly HashSet<Type> excludedTypes = new();
+        private readonly HashSet<MemberInfo> excludedProperties = new();
+        private readonly Dictionary<Type, Func<Object, string>> typeSerializers = new();
+        private readonly Dictionary<string, Func<Object, string>> propertySerializers = new();
+        private readonly Dictionary<string, int> propertyTrim = new();
+        private int maxNestingLevel = 5;
+
+        public int MaxNestingLevel
+        {
+            get => maxNestingLevel;
+            private set
+            {
+                if (value <= 0)
+                {
+                    throw new ArgumentOutOfRangeException(
+                        nameof(value), value, "The maxNestingDepth value must be positive.");
+                }
+                maxNestingLevel = value;
+            }
+        }
+
+        private readonly HashSet<Type> finalTypes =
+        [
+            typeof(bool), typeof(sbyte),  typeof(byte),  typeof(short),  typeof(ushort),
+            typeof(int),  typeof(uint),  typeof(long), typeof(ulong), typeof(float),
+            typeof(double),  typeof(decimal),  typeof(string), typeof(DateTime), typeof(TimeSpan), typeof(Guid)
+        ];
+
+        public PrintingConfig<TOwner> Exclude<TPropType>()
+        {
+            excludedTypes.Add(typeof(TPropType));
+            return this;
+        }
+
+        public PropertyPrintingConfiguration<TOwner, TPropType> Printing<TPropType>(
+            Expression<Func<TOwner, TPropType>> propertySelector)
+        {
+            var memberInfo = GetPropertyName(propertySelector);
+            return new PropertyPrintingConfiguration<TOwner, TPropType>(this, memberInfo);
+        }
+
+        public PropertyPrintingConfiguration<TOwner, TPropType> Printing<TPropType>()
+        {
+            return new PropertyPrintingConfiguration<TOwner, TPropType>(this, null);
+        }
+
+        public PrintingConfig<TOwner> Exclude<TPropType>(Expression<Func<TOwner, TPropType>> propertySelector)
+        {
+            var propertyName = GetPropertyName(propertySelector);
+            excludedProperties.Add(propertyName);
+            return this;
+        }
+
         public string PrintToString(TOwner obj)
         {
             return PrintToString(obj, 0);
         }
 
+
         private string PrintToString(object obj, int nestingLevel)
         {
-            //TODO apply configurations
+            if (nestingLevel > MaxNestingLevel)
+                return "Maximum serialization depth has been reached";
+
             if (obj == null)
-                return "null" + Environment.NewLine;
+                return "null";
+
+            var type = obj.GetType();
+
+            if (excludedTypes.Contains(type))
+                return string.Empty;
 
-            var finalTypes = new[]
-            {
-                typeof(int), typeof(double), typeof(float), typeof(string),
-                typeof(DateTime), typeof(TimeSpan)
-            };
             if (finalTypes.Contains(obj.GetType()))
-                return obj + Environment.NewLine;
+                return obj.ToString();
+
+            if (typeSerializers.TryGetValue(type, out var serializer))
+                return serializer(obj).ToString();
+
+            if (obj is ICollection collection)
+                return SerializeCollection(collection, nestingLevel);
 
             var identation = new string('\t', nestingLevel + 1);
             var sb = new StringBuilder();
-            var type = obj.GetType();
             sb.AppendLine(type.Name);
             foreach (var propertyInfo in type.GetProperties())
             {
-                sb.Append(identation + propertyInfo.Name + " = " +
-                          PrintToString(propertyInfo.GetValue(obj),
-                              nestingLevel + 1));
+                var propertyValue = propertyInfo.GetValue(obj);
+                var propertyType = propertyInfo.PropertyType;
+                var propertyName = propertyInfo.Name;
+
+                if (excludedProperties.Contains(propertyInfo))
+                    continue;
+                if (excludedTypes.Contains(propertyType))
+                    continue;
+
+                if (typeSerializers.TryGetValue(propertyType, out var typeSerializer))
+                {
+                    sb.AppendLine($"{identation}{propertyName} = {typeSerializer(propertyValue)}");
+                    continue;
+                }
+
+                if (propertySerializers.TryGetValue(propertyName, out var propertySerializer))
+                {
+                    sb.AppendLine($"{identation}{propertyName} = {propertySerializer(propertyValue)}");
+                    continue;
+                }
+
+                if (propertyTrim.TryGetValue(propertyName, out var toTrimLength) && propertyValue is string stringValue)
+                {
+                    sb.AppendLine($"{identation}{propertyName} = {stringValue.Substring(0, Math.Min(toTrimLength, stringValue.Length))}");
+                    continue;
+                }
+
+                sb.AppendLine($"{identation}{propertyName} = {PrintToString(propertyValue, nestingLevel + 1)}");
             }
             return sb.ToString();
         }
+
+        private string SerializeCollection(ICollection collection, int nestingLevel)
+        {
+            var identation = new string('\t', nestingLevel + 1);
+            var sb = new StringBuilder();
+
+            sb.AppendLine("[");
+
+            if (collection is IDictionary dictionary)
+            {
+                foreach (var key in dictionary.Keys)
+                {
+                    sb.Append($"{identation}{{{PrintToString(key, nestingLevel)}: " +
+                              $"{PrintToString(dictionary[key], nestingLevel + 1)}}}\n");
+                }
+            }
+            else
+            {
+                foreach (var value in collection)
+                {
+                    sb.Append('\t', nestingLevel + 1);
+                    sb.Append(PrintToString(value, nestingLevel + 1));
+                }
+            }
+
+            sb.AppendLine($"{identation}]");
+            return sb.ToString();
+        }
+
+        private MemberInfo GetPropertyName<TPropType>(Expression<Func<TOwner, TPropType>> propertySelector)
+        {
+            if (propertySelector.Body is MemberExpression memberExpression)
+                return memberExpression.Member;
+
+            if (propertySelector.Body is UnaryExpression unaryExpression && unaryExpression.Operand is MemberExpression operand)
+                return operand.Member;
+
+            throw new ArgumentException("Invalid property selector expression");
+        }
+
+        internal void AddPropertySerializer(string propertyName, Func<object, string> serializer) =>
+            propertySerializers[propertyName] = serializer;
+
+        internal void AddTypeSerializer<TPropType>(Func<object, string> serializer) =>
+            typeSerializers[typeof(TPropType)] = serializer;
+
+        internal void AddStringPropertyTrim(string propertyName, int maxLength) =>
+            propertyTrim[propertyName] = maxLength;
     }
 }

ObjectPrinting/PropertyPrintingConfiguration.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Reflection;
+
+namespace ObjectPrinting;
+
+public class PropertyPrintingConfiguration<TOwner, TPropType>
+{
+    private readonly PrintingConfig<TOwner> parentConfig;
+    private readonly MemberInfo? propertyMemberInfo;
+
+    internal PrintingConfig<TOwner> ParentConfig => parentConfig;
+    internal MemberInfo? PropertyMemberInfo => propertyMemberInfo;
+
+    public PropertyPrintingConfiguration(PrintingConfig<TOwner> parentConfig, MemberInfo? propertyMemberInfo)
+    {
+        this.parentConfig = parentConfig;
+        this.propertyMemberInfo = propertyMemberInfo;
+    }
+
+    public PrintingConfig<TOwner> Using(Func<TPropType, string> printingMethod)
+    {
+        if (propertyMemberInfo == null)
+        {
+            parentConfig.AddTypeSerializer<TPropType>(obj => printingMethod((TPropType)obj));
+        }
+        else
+        {
+            parentConfig.AddPropertySerializer(propertyMemberInfo.Name, obj => printingMethod((TPropType)obj));
+        }
+
+        return parentConfig;
+    }
+}

ObjectPrinting/Tests/ObjectPrinterAcceptanceTests.cs

@@ -1,4 +1,7 @@
 using NUnit.Framework;
+using System;
+using System.Globalization;
+using ObjectPrinting.Extensions;
 
 namespace ObjectPrinting.Tests
 {
@@ -8,20 +11,32 @@ public class ObjectPrinterAcceptanceTests
         [Test]
         public void Demo()
         {
-            var person = new Person { Name = "Alex", Age = 19 };
+            var person = new Person { Age = 19, Name = "Alex", Height = 173.65, Id = new Guid() };
 
-            var printer = ObjectPrinter.For<Person>();
+            var printer = ObjectPrinter.For<Person>()
                 //1. Исключить из сериализации свойства определенного типа
+                .Exclude<Guid>()
                 //2. Указать альтернативный способ сериализации для определенного типа
+                .Printing<int>().Using(i => i.ToString("X"))
                 //3. Для числовых типов указать культуру
+                .Printing<double>().UseCulture(CultureInfo.InvariantCulture)
                 //4. Настроить сериализацию конкретного свойства
+                .Printing(x => x.Name).Using(p => $"---{p}---")
                 //5. Настроить обрезание строковых свойств (метод должен быть виден только для строковых свойств)
+                .Printing(p => p.Name).TrimmedToLength(10)
                 //6. Исключить из сериализации конкретного свойства
-
+                .Exclude(p => p.Age);
+
             string s1 = printer.PrintToString(person);
+            Console.WriteLine(s1);
+
+            //7. Синтаксический сахар в виде метода расширения, сериализующего по-умолчанию
+            var s2 = person.PrintToString();
+            Console.WriteLine(s2);
 
-            //7. Синтаксический сахар в виде метода расширения, сериализующего по-умолчанию        
             //8. ...с конфигурированием
+            var s3 = person.PrintToString(p => p.Exclude(x => x.Age));
+            Console.WriteLine(s3);
         }
     }
 }