using System;

using System.Collections;

using System.Collections.Concurrent;

using System.Collections.Generic;

using System.Linq;

using System.Reflection;

using System.Runtime.CompilerServices;

using System.Runtime.Serialization;

using System.Threading;

using ServiceStack.Text;

namespace ServiceStack

{

public static class PlatformExtensions

{

[Obsolete("Use type.IsInterface")]

public static bool IsInterface(this Type type) => type.IsInterface;

[Obsolete("Use type.IsArray")]

public static bool IsArray(this Type type) => type.IsArray;

[Obsolete("Use type.IsValueType")]

public static bool IsValueType(this Type type) => type.IsValueType;

[Obsolete("Use type.IsGenericType")]

public static bool IsGeneric(this Type type) => type.IsGenericType;

[Obsolete("Use type.BaseType")]

public static Type BaseType(this Type type) => type.BaseType;

[Obsolete("Use pi.ReflectedType")]

public static Type ReflectedType(this PropertyInfo pi) => pi.ReflectedType;

[Obsolete("Use fi.ReflectedType")]

public static Type ReflectedType(this FieldInfo fi) => fi.ReflectedType;

[Obsolete("Use type.GetGenericTypeDefinition()")]

public static Type GenericTypeDefinition(this Type type) => type.GetGenericTypeDefinition();

[Obsolete("Use type.GetInterfaces()")]

public static Type[] GetTypeInterfaces(this Type type) => type.GetInterfaces();

[Obsolete("Use type.GetGenericArguments()")]

public static Type[] GetTypeGenericArguments(this Type type) => type.GetGenericArguments();

[Obsolete("Use type.GetConstructor(Type.EmptyTypes)")]

public static ConstructorInfo GetEmptyConstructor(this Type type) => type.GetConstructor(Type.EmptyTypes);

[Obsolete("Use type.GetConstructors()")]

public static IEnumerable<ConstructorInfo> GetAllConstructors(this Type type) => type.GetConstructors();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

internal static PropertyInfo[] GetTypesPublicProperties(this Type subType)

{

return subType.GetProperties(

BindingFlags.FlattenHierarchy |

BindingFlags.Public |

BindingFlags.Instance);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

internal static PropertyInfo[] GetTypesProperties(this Type subType)

{

return subType.GetProperties(

BindingFlags.FlattenHierarchy |

BindingFlags.Public |

BindingFlags.NonPublic |

BindingFlags.Instance);

}

[Obsolete("Use type.Assembly")]

public static Assembly GetAssembly(this Type type) => type.Assembly;

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static FieldInfo[] Fields(this Type type)

{

return type.GetFields(

BindingFlags.FlattenHierarchy |

BindingFlags.Instance |

BindingFlags.Static |

BindingFlags.Public |

BindingFlags.NonPublic);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static PropertyInfo[] Properties(this Type type)

{

return type.GetProperties(

BindingFlags.FlattenHierarchy |

BindingFlags.Instance |

BindingFlags.Static |

BindingFlags.Public |

BindingFlags.NonPublic);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static FieldInfo[] GetAllFields(this Type type) => type.IsInterface ? TypeConstants.EmptyFieldInfoArray : type.Fields();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static FieldInfo[] GetPublicFields(this Type type) => type.IsInterface

? TypeConstants.EmptyFieldInfoArray

: type.GetFields(BindingFlags.FlattenHierarchy | BindingFlags.Public | BindingFlags.Instance).ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MemberInfo[] GetPublicMembers(this Type type) => type.GetMembers(BindingFlags.Public | BindingFlags.Instance);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MemberInfo[] GetAllPublicMembers(this Type type) =>

type.GetMembers(BindingFlags.Public | BindingFlags.Instance | BindingFlags.FlattenHierarchy);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MethodInfo GetStaticMethod(this Type type, string methodName) =>

type.GetMethod(methodName, BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MethodInfo GetInstanceMethod(this Type type, string methodName) =>

type.GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

[Obsolete("Use fn.Method")]

public static MethodInfo Method(this Delegate fn) => fn.Method;

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttribute<T>(this Type type) => type.AllAttributes().Any(x => x.GetType() == typeof(T));

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttribute<T>(this PropertyInfo pi) => pi.AllAttributes().Any(x => x.GetType() == typeof(T));

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttribute<T>(this FieldInfo fi) => fi.AllAttributes().Any(x => x.GetType() == typeof(T));

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttribute<T>(this MethodInfo mi) => mi.AllAttributes().Any(x => x.GetType() == typeof(T));

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttributeNamed(this Type type, string name)

{

var normalizedAttr = name.Replace("Attribute", "").ToLower();

return type.AllAttributes().Any(x => x.GetType().Name.Replace("Attribute", "").ToLower() == normalizedAttr);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttributeNamed(this PropertyInfo pi, string name)

{

var normalizedAttr = name.Replace("Attribute", "").ToLower();

return pi.AllAttributes().Any(x => x.GetType().Name.Replace("Attribute", "").ToLower() == normalizedAttr);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttributeNamed(this FieldInfo fi, string name)

{

var normalizedAttr = name.Replace("Attribute", "").ToLower();

return fi.AllAttributes().Any(x => x.GetType().Name.Replace("Attribute", "").ToLower() == normalizedAttr);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool HasAttributeNamed(this MemberInfo mi, string name)

{

var normalizedAttr = name.Replace("Attribute", "").ToLower();

return mi.AllAttributes().Any(x => x.GetType().Name.Replace("Attribute", "").ToLower() == normalizedAttr);

}

const string DataContract = "DataContractAttribute";

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool IsDto(this Type type)

{

if (type == null)

return false;

return !Env.IsMono

? type.HasAttribute<DataContractAttribute>()

: type.GetCustomAttributes(true).Any(x => x.GetType().Name == DataContract);

}

[Obsolete("Use pi.GetGetMethod(nonPublic)")]

public static MethodInfo PropertyGetMethod(this PropertyInfo pi, bool nonPublic = false) => pi.GetGetMethod(nonPublic);

[Obsolete("Use type.GetInterfaces()")]

public static Type[] Interfaces(this Type type) => type.GetInterfaces();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static PropertyInfo[] AllProperties(this Type type) =>

type.GetProperties(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);

//Should only register Runtime Attributes on StartUp, So using non-ThreadSafe Dictionary is OK

static Dictionary<string, List<Attribute>> propertyAttributesMap

= new Dictionary<string, List<Attribute>>();

static Dictionary<Type, List<Attribute>> typeAttributesMap

= new Dictionary<Type, List<Attribute>>();

public static void ClearRuntimeAttributes()

{

propertyAttributesMap = new Dictionary<string, List<Attribute>>();

typeAttributesMap = new Dictionary<Type, List<Attribute>>();

}

internal static string UniqueKey(this PropertyInfo pi)

{

if (pi.DeclaringType == null)

throw new ArgumentException("Property '{0}' has no DeclaringType".Fmt(pi.Name));

return pi.DeclaringType.Namespace + "." + pi.DeclaringType.Name + "." + pi.Name;

}

public static Type AddAttributes(this Type type, params Attribute[] attrs)

{

if (!typeAttributesMap.TryGetValue(type, out var typeAttrs))

typeAttributesMap[type] = typeAttrs = new List<Attribute>();

typeAttrs.AddRange(attrs);

return type;

}

/// <summary>

/// Add a Property attribute at runtime.

/// <para>Not threadsafe, should only add attributes on Startup.</para>

/// </summary>

public static PropertyInfo AddAttributes(this PropertyInfo propertyInfo, params Attribute[] attrs)

{

var key = propertyInfo.UniqueKey();

if (!propertyAttributesMap.TryGetValue(key, out var propertyAttrs))

propertyAttributesMap[key] = propertyAttrs = new List<Attribute>();

propertyAttrs.AddRange(attrs);

return propertyInfo;

}

/// <summary>

/// Add a Property attribute at runtime.

/// <para>Not threadsafe, should only add attributes on Startup.</para>

/// </summary>

public static PropertyInfo ReplaceAttribute(this PropertyInfo propertyInfo, Attribute attr)

{

var key = propertyInfo.UniqueKey();

if (!propertyAttributesMap.TryGetValue(key, out var propertyAttrs))

propertyAttributesMap[key] = propertyAttrs = new List<Attribute>();

propertyAttrs.RemoveAll(x => x.GetType() == attr.GetType());

propertyAttrs.Add(attr);

return propertyInfo;

}

public static List<TAttr> GetAttributes<TAttr>(this PropertyInfo propertyInfo)

{

return !propertyAttributesMap.TryGetValue(propertyInfo.UniqueKey(), out var propertyAttrs)

? new List<TAttr>()

: propertyAttrs.OfType<TAttr>().ToList();

}

public static List<Attribute> GetAttributes(this PropertyInfo propertyInfo)

{

return !propertyAttributesMap.TryGetValue(propertyInfo.UniqueKey(), out var propertyAttrs)

? new List<Attribute>()

: propertyAttrs.ToList();

}

public static List<Attribute> GetAttributes(this PropertyInfo propertyInfo, Type attrType)

{

return !propertyAttributesMap.TryGetValue(propertyInfo.UniqueKey(), out var propertyAttrs)

? new List<Attribute>()

: propertyAttrs.Where(x => attrType.IsInstanceOf(x.GetType())).ToList();

}

public static object[] AllAttributes(this PropertyInfo propertyInfo)

{

var attrs = propertyInfo.GetCustomAttributes(true);

var runtimeAttrs = propertyInfo.GetAttributes();

if (runtimeAttrs.Count == 0)

return attrs;

runtimeAttrs.AddRange(attrs.Cast<Attribute>());

return runtimeAttrs.Cast<object>().ToArray();

}

public static object[] AllAttributes(this PropertyInfo propertyInfo, Type attrType)

{

var attrs = propertyInfo.GetCustomAttributes(attrType, true);

var runtimeAttrs = propertyInfo.GetAttributes(attrType);

if (runtimeAttrs.Count == 0)

return attrs;

runtimeAttrs.AddRange(attrs.Cast<Attribute>());

return runtimeAttrs.Cast<object>().ToArray();

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this ParameterInfo paramInfo) => paramInfo.GetCustomAttributes(true);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this FieldInfo fieldInfo) => fieldInfo.GetCustomAttributes(true);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this MemberInfo memberInfo) => memberInfo.GetCustomAttributes(true);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this ParameterInfo paramInfo, Type attrType) => paramInfo.GetCustomAttributes(attrType, true);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this MemberInfo memberInfo, Type attrType)

{

var prop = memberInfo as PropertyInfo;

return prop != null

? prop.AllAttributes(attrType)

: memberInfo.GetCustomAttributes(attrType, true);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this FieldInfo fieldInfo, Type attrType) => fieldInfo.GetCustomAttributes(attrType, true);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this Type type) => type.GetCustomAttributes(true).Union(type.GetRuntimeAttributes()).ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this Type type, Type attrType) =>

type.GetCustomAttributes(attrType, true).Union(type.GetRuntimeAttributes(attrType)).ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object[] AllAttributes(this Assembly assembly) => assembly.GetCustomAttributes(true).ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttr[] AllAttributes<TAttr>(this ParameterInfo pi) => pi.AllAttributes(typeof(TAttr)).Cast<TAttr>().ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttr[] AllAttributes<TAttr>(this MemberInfo mi) => mi.AllAttributes(typeof(TAttr)).Cast<TAttr>().ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttr[] AllAttributes<TAttr>(this FieldInfo fi) => fi.AllAttributes(typeof(TAttr)).Cast<TAttr>().ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttr[] AllAttributes<TAttr>(this PropertyInfo pi) => pi.AllAttributes(typeof(TAttr)).Cast<TAttr>().ToArray();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

static IEnumerable<T> GetRuntimeAttributes<T>(this Type type) => typeAttributesMap.TryGetValue(type, out var attrs)

? attrs.OfType<T>()

: new List<T>();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

static IEnumerable<Attribute> GetRuntimeAttributes(this Type type, Type attrType = null) => typeAttributesMap.TryGetValue(type, out var attrs)

? attrs.Where(x => attrType == null || attrType.IsInstanceOf(x.GetType()))

: new List<Attribute>();

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttr[] AllAttributes<TAttr>(this Type type)

{

return type.GetCustomAttributes(typeof(TAttr), true)

.OfType<TAttr>()

.Union(type.GetRuntimeAttributes<TAttr>())

.ToArray();

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttr FirstAttribute<TAttr>(this Type type) where TAttr : class

{

return (TAttr)type.GetCustomAttributes(typeof(TAttr), true)

.FirstOrDefault()

?? type.GetRuntimeAttributes<TAttr>().FirstOrDefault();

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttribute FirstAttribute<TAttribute>(this MemberInfo memberInfo)

{

return memberInfo.AllAttributes<TAttribute>().FirstOrDefault();

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttribute FirstAttribute<TAttribute>(this ParameterInfo paramInfo)

{

return paramInfo.AllAttributes<TAttribute>().FirstOrDefault();

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static TAttribute FirstAttribute<TAttribute>(this PropertyInfo propertyInfo)

{

return propertyInfo.AllAttributes<TAttribute>().FirstOrDefault();

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static Type FirstGenericTypeDefinition(this Type type)

{

var genericType = type.FirstGenericType();

return genericType != null ? genericType.GetGenericTypeDefinition() : null;

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool IsDynamic(this Assembly assembly)

{

try

{

var isDyanmic = assembly is System.Reflection.Emit.AssemblyBuilder

|| string.IsNullOrEmpty(assembly.Location);

return isDyanmic;

}

catch (NotSupportedException)

{

//Ignore assembly.Location not supported in a dynamic assembly.

return true;

}

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MethodInfo GetStaticMethod(this Type type, string methodName, Type[] types)

{

return types == null

? type.GetMethod(methodName, BindingFlags.Public | BindingFlags.Static)

: type.GetMethod(methodName, BindingFlags.Public | BindingFlags.Static, null, types, null);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MethodInfo GetMethodInfo(this Type type, string methodName, Type[] types = null) => types == null

? type.GetMethod(methodName)

: type.GetMethod(methodName, types);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static object InvokeMethod(this Delegate fn, object instance, object[] parameters = null) =>

fn.Method.Invoke(instance, parameters ?? new object[] { });

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static FieldInfo GetPublicStaticField(this Type type, string fieldName) =>

type.GetField(fieldName, BindingFlags.Public | BindingFlags.Static);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static Delegate MakeDelegate(this MethodInfo mi, Type delegateType, bool throwOnBindFailure = true) =>

Delegate.CreateDelegate(delegateType, mi, throwOnBindFailure);

[Obsolete("Use type.GetGenericArguments()")]

public static Type[] GenericTypeArguments(this Type type) => type.GetGenericArguments();

[Obsolete("Use type.GetConstructors()")]

public static ConstructorInfo[] DeclaredConstructors(this Type type) => type.GetConstructors();

[Obsolete("Use type.IsAssignableFrom(fromType)")]

public static bool AssignableFrom(this Type type, Type fromType) => type.IsAssignableFrom(fromType);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool IsStandardClass(this Type type) => type.IsClass && !type.IsAbstract && !type.IsInterface;

[Obsolete("Use type.IsAbstract")]

public static bool IsAbstract(this Type type) => type.IsAbstract;

[Obsolete("Use type.GetProperty(propertyName)")]

public static PropertyInfo GetPropertyInfo(this Type type, string propertyName) => type.GetProperty(propertyName);

[Obsolete("Use type.GetField(fieldName)")]

public static FieldInfo GetFieldInfo(this Type type, string fieldName) => type.GetField(fieldName);

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static FieldInfo[] GetWritableFields(this Type type) =>

type.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.SetField);

[Obsolete("Use pi.GetSetMethod(nonPublic)")]

public static MethodInfo SetMethod(this PropertyInfo pi, bool nonPublic = true) =>

pi.GetSetMethod(nonPublic);

[Obsolete("Use pi.GetGetMethod(nonPublic)")]

public static MethodInfo GetMethodInfo(this PropertyInfo pi, bool nonPublic = true) =>

pi.GetGetMethod(nonPublic);

[Obsolete("Use type.IsInstanceOfType(instance)")]

public static bool InstanceOfType(this Type type, object instance) => type.IsInstanceOfType(instance);

[Obsolete("Use type.IsAssignableFrom(fromType)")]

public static bool IsAssignableFromType(this Type type, Type fromType) => type.IsAssignableFrom(fromType);

[Obsolete("Use type.IsClass")]

public static bool IsClass(this Type type) => type.IsClass;

[Obsolete("Use type.IsEnum")]

public static bool IsEnum(this Type type) => type.IsEnum;

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool IsEnumFlags(this Type type) => type.IsEnum && type.FirstAttribute<FlagsAttribute>() != null;

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static bool IsUnderlyingEnum(this Type type) => type.IsEnum || type.UnderlyingSystemType.IsEnum;

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static MethodInfo[] GetInstanceMethods(this Type type) =>

type.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

[Obsolete("Use type.GetMethods()")]

public static MethodInfo[] GetMethodInfos(this Type type) => type.GetMethods();

[Obsolete("Use type.GetProperties()")]

public static PropertyInfo[] GetPropertyInfos(this Type type) => type.GetProperties();

[Obsolete("Use type.IsGenericTypeDefinition")]

public static bool IsGenericTypeDefinition(this Type type) => type.IsGenericTypeDefinition;

[Obsolete("Use type.IsGenericType")]

public static bool IsGenericType(this Type type) => type.IsGenericType;

[Obsolete("Use type.ContainsGenericParameters")]

public static bool ContainsGenericParameters(this Type type) => type.ContainsGenericParameters;

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static string GetDeclaringTypeName(this Type type)

{

if (type.DeclaringType != null)

return type.DeclaringType.Name;

if (type.ReflectedType != null)

return type.ReflectedType.Name;

return null;

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static string GetDeclaringTypeName(this MemberInfo mi)

{

if (mi.DeclaringType != null)

return mi.DeclaringType.Name;

return mi.ReflectedType.Name;

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static Delegate CreateDelegate(this MethodInfo methodInfo, Type delegateType)

{

return Delegate.CreateDelegate(delegateType, methodInfo);

}

[MethodImpl(MethodImplOptions.AggressiveInlining)]

public static Delegate CreateDelegate(this MethodInfo methodInfo, Type delegateType, object target)

{

return Delegate.CreateDelegate(delegateType, target, methodInfo);

}

[Obsolete("Use type.GetElementType()")]

public static Type ElementType(this Type type) => type.GetElementType();

public static Type GetCollectionType(this Type type)

{

return type.GetElementType()

?? type.GetGenericArguments().LastOrDefault(); //new[] { str }.Select(x => new Type()) => WhereSelectArrayIterator<string,Type>

}

static Dictionary<string, Type> GenericTypeCache = new Dictionary<string, Type>();

public static Type GetCachedGenericType(this Type type, params Type[] argTypes)

{

if (!type.IsGenericTypeDefinition)

throw new ArgumentException(type.FullName + " is not a Generic Type Definition");

if (argTypes == null)

argTypes = TypeConstants.EmptyTypeArray;

var sb = StringBuilderThreadStatic.Allocate()

.Append(type.FullName);

foreach (var argType in argTypes)

{

sb.Append('|')

.Append(argType.FullName);

}

var key = StringBuilderThreadStatic.ReturnAndFree(sb);

if (GenericTypeCache.TryGetValue(key, out var genericType))

return genericType;

genericType = type.MakeGenericType(argTypes);

Dictionary<string, Type> snapshot, newCache;

do

{

snapshot = GenericTypeCache;

newCache = new Dictionary<string, Type>(GenericTypeCache);

newCache[key] = genericType;

} while (!ReferenceEquals(

Interlocked.CompareExchange(ref GenericTypeCache, newCache, snapshot), snapshot));

return genericType;

}

private static readonly ConcurrentDictionary<Type, ObjectDictionaryDefinition> toObjectMapCache =

new ConcurrentDictionary<Type, ObjectDictionaryDefinition>();

internal class ObjectDictionaryDefinition

{

public Type Type;

public readonly List<ObjectDictionaryFieldDefinition> Fields = new List<ObjectDictionaryFieldDefinition>();

public readonly Dictionary<string, ObjectDictionaryFieldDefinition> FieldsMap = new Dictionary<string, ObjectDictionaryFieldDefinition>();

public void Add(string name, ObjectDictionaryFieldDefinition fieldDef)

{

Fields.Add(fieldDef);

FieldsMap[name] = fieldDef;

}

}

internal class ObjectDictionaryFieldDefinition

{

public string Name;

public Type Type;

public GetMemberDelegate GetValueFn;

public SetMemberDelegate SetValueFn;

public Type ConvertType;

public GetMemberDelegate ConvertValueFn;

public void SetValue(object instance, object value)

{

if (SetValueFn == null)

return;

if (!Type.IsInstanceOfType(value))

{

lock (this)

{

//Only caches object converter used on first use

if (ConvertType == null)

{

ConvertType = value.GetType();

ConvertValueFn = TypeConverter.CreateTypeConverter(ConvertType, Type);

}

}

if (ConvertType.IsInstanceOfType(value))

{

value = ConvertValueFn(value);

}

else

{

var tempConvertFn = TypeConverter.CreateTypeConverter(value.GetType(), Type);

value = tempConvertFn(value);

}

}

SetValueFn(instance, value);

}

}

public static Dictionary<string, object> ToObjectDictionary(this object obj)

{

if (obj == null)

return null;

if (obj is Dictionary<string, object> alreadyDict)

return alreadyDict;

if (obj is IDictionary<string, object> interfaceDict)

return new Dictionary<string, object>(interfaceDict);

if (obj is Dictionary<string, string> stringDict)

{

var to = new Dictionary<string, object>();

foreach (var entry in stringDict)

{

to[entry.Key] = entry.Value;

}

return to;

}

var type = obj.GetType();

ObjectDictionaryDefinition def;

if (!toObjectMapCache.TryGetValue(type, out def))

toObjectMapCache[type] = def = CreateObjectDictionaryDefinition(type);

var dict = new Dictionary<string, object>();

foreach (var fieldDef in def.Fields)

{

dict[fieldDef.Name] = fieldDef.GetValueFn(obj);

}

return dict;

}

public static object FromObjectDictionary(this IReadOnlyDictionary<string, object> values, Type type)

{

var alreadyDict = type == typeof(IReadOnlyDictionary<string, object>);

if (alreadyDict)

return true;

if (!toObjectMapCache.TryGetValue(type, out var def))

toObjectMapCache[type] = def = CreateObjectDictionaryDefinition(type);

var to = type.CreateInstance();

foreach (var entry in values)

{

if (!def.FieldsMap.TryGetValue(entry.Key, out var fieldDef) &&

!def.FieldsMap.TryGetValue(entry.Key.ToPascalCase(), out fieldDef)

|| entry.Value == null)

continue;

fieldDef.SetValue(to, entry.Value);

}

return to;

}

public static T FromObjectDictionary<T>(this IReadOnlyDictionary<string, object> values)

{

return (T)values.FromObjectDictionary(typeof(T));

}

private static ObjectDictionaryDefinition CreateObjectDictionaryDefinition(Type type)

{

var def = new ObjectDictionaryDefinition

{

Type = type,

};

foreach (var pi in type.GetSerializableProperties())

{

def.Add(pi.Name, new ObjectDictionaryFieldDefinition

{

Name = pi.Name,

Type = pi.PropertyType,

GetValueFn = pi.CreateGetter(),

SetValueFn = pi.CreateSetter(),

});

}

if (JsConfig.IncludePublicFields)

{

foreach (var fi in type.GetSerializableFields())

{

def.Add(fi.Name, new ObjectDictionaryFieldDefinition

{

Name = fi.Name,

Type = fi.FieldType,

GetValueFn = fi.CreateGetter(),

SetValueFn = fi.CreateSetter(),

});

}

}

return def;

}

public static Dictionary<string, object> ToSafePartialObjectDictionary<T>(this T instance)

{

var to = new Dictionary<string, object>();

var propValues = instance.ToObjectDictionary();

if (propValues != null)

{

foreach (var entry in propValues)

{

var valueType = entry.Value?.GetType();

try

{

if (valueType == null || !valueType.IsClass || valueType == typeof(string))

{

to[entry.Key] = entry.Value;

}

else if (!TypeSerializer.HasCircularReferences(entry.Value))

{

if (entry.Value is IEnumerable enumerable)

{

to[entry.Key] = entry.Value;

}

else

{

to[entry.Key] = entry.Value.ToSafePartialObjectDictionary();

}

}

else

{

to[entry.Key] = entry.Value.ToString();

}

}

catch (Exception ignore)

{

Tracer.Instance.WriteDebug($"Could not retrieve value from '{valueType?.GetType().Name}': ${ignore.Message}");

}

}

}

return to;

}

}

}