Class AccessTools

A helper class for reflection related functions

Inheritance

System.Object

AccessTools

Namespace: HarmonyLib

Assembly: 0Harmony.dll

Syntax

public static class AccessTools

Fields

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all

Shortcut for System.Reflection.BindingFlags to simplify the use of reflections and make it work for any access level

Declaration

public static readonly BindingFlags all

Field Value

Type	Description
System.Reflection.BindingFlags

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allDeclared

Shortcut for System.Reflection.BindingFlags to simplify the use of reflections and make it work for any access level but only within the current type

Declaration

public static readonly BindingFlags allDeclared

Field Value

Type	Description
System.Reflection.BindingFlags

Properties

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IsMonoRuntime

True if the current runtime is based on Mono, false otherwise (.NET)

Declaration

public static bool IsMonoRuntime { get; }

Property Value

Type	Description
System.Boolean

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IsNetCoreRuntime

True if the current runtime is .NET Core, false otherwise (Mono or .NET Framework)

Declaration

public static bool IsNetCoreRuntime { get; }

Property Value

Type	Description
System.Boolean

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IsNetFrameworkRuntime

True if the current runtime is .NET Framework, false otherwise (.NET Core or Mono, although latter isn't guaranteed)

Declaration

public static bool IsNetFrameworkRuntime { get; }

Property Value

Type	Description
System.Boolean

Methods

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ActualParameters(MethodBase, Object[])

Creates an array of input parameters for a given method and a given set of potential inputs

Declaration

public static object[] ActualParameters(MethodBase method, object[] inputs)

Parameters

Type	Name	Description
System.Reflection.MethodBase	method	The method/constructor you are planing to call
System.Object[]	inputs	The possible input parameters in any order

Returns

Type	Description
System.Object[]	An object array matching the method signature

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AllAssemblies()

Enumerates all assemblies in the current app domain, excluding visual studio assemblies

Declaration

public static IEnumerable<Assembly> AllAssemblies()

Returns

Type	Description
System.Collections.Generic.IEnumerable<System.Reflection.Assembly>	An enumeration of System.Reflection.Assembly

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AllTypes()

Enumerates all successfully loaded types in the current app domain, excluding visual studio assemblies

Declaration

public static IEnumerable<Type> AllTypes()

Returns

Type	Description
System.Collections.Generic.IEnumerable<System.Type>	An enumeration of all System.Type in all assemblies, excluding visual studio assemblies

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CombinedHashCode(IEnumerable<Object>)

Calculates a combined hash code for an enumeration of objects

Declaration

public static int CombinedHashCode(IEnumerable<object> objects)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<System.Object>	objects	The objects

Returns

Type	Description
System.Int32	The hash code

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Constructor(Type, Type[], Boolean)

Gets the reflection information for a constructor by searching the type and all its super types

Declaration

public static ConstructorInfo Constructor(Type type, Type[] parameters = null, bool searchForStatic = false)

Parameters

Type	Name	Description
System.Type	type	The class/type where the constructor is declared
System.Type[]	parameters	Optional parameters to target a specific overload of the method
System.Boolean	searchForStatic	Optional parameters to only consider static constructors

Returns

Type	Description
System.Reflection.ConstructorInfo	A constructor info or null when type is null or when the method cannot be found

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CreateInstance(Type)

Creates an (possibly uninitialized) instance of a given type

Declaration

public static object CreateInstance(Type type)

Parameters

Type	Name	Description
System.Type	type	The class/type

Returns

Type	Description
System.Object	The new instance

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CreateInstance<T>()

Creates an (possibly uninitialized) instance of a given type

Declaration

public static T CreateInstance<T>()

Returns

Type	Description
T	The new instance

Type Parameters

Name	Description
T	The class/type

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DeclaredConstructor(Type, Type[], Boolean)

Gets the reflection information for a directly declared constructor

Declaration

public static ConstructorInfo DeclaredConstructor(Type type, Type[] parameters = null, bool searchForStatic = false)

Parameters

Type	Name	Description
System.Type	type	The class/type where the constructor is declared
System.Type[]	parameters	Optional parameters to target a specific overload of the constructor
System.Boolean	searchForStatic	Optional parameters to only consider static constructors

Returns

Type	Description
System.Reflection.ConstructorInfo	A constructor info or null when type is null or when the constructor cannot be found

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DeclaredField(String)

Gets the reflection information for a directly declared field

Declaration

public static FieldInfo DeclaredField(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.FieldInfo	A field or null when the field cannot be found

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DeclaredField(Type, Int32)

Gets the reflection information for a field

Declaration

public static FieldInfo DeclaredField(Type type, int idx)

Parameters

Type	Name	Description
System.Type	type	The class/type where the field is declared
System.Int32	idx	The zero-based index of the field inside the class definition

Returns

Type	Description
System.Reflection.FieldInfo	A field or null when type is null or when the field cannot be found

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DeclaredField(Type, String)

Gets the reflection information for a directly declared field

Declaration

public static FieldInfo DeclaredField(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type where the field is defined
System.String	name	The name of the field

Returns

Type	Description
System.Reflection.FieldInfo	A field or null when type/name is null or when the field cannot be found

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DeclaredIndexer(Type, Type[])

Gets the reflection information for a directly declared indexer property

Declaration

public static PropertyInfo DeclaredIndexer(Type type, Type[] parameters = null)

Parameters

Type	Name	Description
System.Type	type	The class/type where the indexer property is declared
System.Type[]	parameters	Optional parameters to target a specific overload of multiple indexers

Returns

Type	Description
System.Reflection.PropertyInfo	An indexer property or null when type is null or when it cannot be found

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DeclaredIndexerGetter(Type, Type[])

Gets the reflection information for the getter method of a directly declared indexer property

Declaration

public static MethodInfo DeclaredIndexerGetter(Type type, Type[] parameters = null)

Parameters

Type	Name	Description
System.Type	type	The class/type where the indexer property is declared
System.Type[]	parameters	Optional parameters to target a specific overload of multiple indexers

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type is null or when indexer property cannot be found

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DeclaredIndexerSetter(Type, Type[])

Gets the reflection information for the setter method of a directly declared indexer property

Declaration

public static MethodInfo DeclaredIndexerSetter(Type type, Type[] parameters)

Parameters

Type	Name	Description
System.Type	type	The class/type where the indexer property is declared
System.Type[]	parameters	Optional parameters to target a specific overload of multiple indexers

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type is null or when indexer property cannot be found

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DeclaredMethod(String, Type[], Type[])

Gets the reflection information for a directly declared method

Declaration

public static MethodInfo DeclaredMethod(string typeColonName, Type[] parameters = null, Type[] generics = null)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.
System.Type[]	parameters	Optional parameters to target a specific overload of the method
System.Type[]	generics	Optional list of types that define the generic version of the method

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when the method cannot be found

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DeclaredMethod(Type, String, Type[], Type[])

Gets the reflection information for a directly declared method

Declaration

public static MethodInfo DeclaredMethod(Type type, string name, Type[] parameters = null, Type[] generics = null)

Parameters

Type	Name	Description
System.Type	type	The class/type where the method is declared
System.String	name	The name of the method (case sensitive)
System.Type[]	parameters	Optional parameters to target a specific overload of the method
System.Type[]	generics	Optional list of types that define the generic version of the method

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the method cannot be found

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DeclaredProperty(String)

Gets the reflection information for a directly declared property

Declaration

public static PropertyInfo DeclaredProperty(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.PropertyInfo	A property or null when the property cannot be found

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DeclaredProperty(Type, String)

Gets the reflection information for a directly declared property

Declaration

public static PropertyInfo DeclaredProperty(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type where the property is declared
System.String	name	The name of the property (case sensitive)

Returns

Type	Description
System.Reflection.PropertyInfo	A property or null when type/name is null or when the property cannot be found

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DeclaredPropertyGetter(String)

Gets the reflection information for the getter method of a directly declared property

Declaration

public static MethodInfo DeclaredPropertyGetter(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when the property cannot be found

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DeclaredPropertyGetter(Type, String)

Gets the reflection information for the getter method of a directly declared property

Declaration

public static MethodInfo DeclaredPropertyGetter(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type where the property is declared
System.String	name	The name of the property (case sensitive)

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the property cannot be found

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DeclaredPropertySetter(String)

Gets the reflection information for the Setter method of a directly declared property

Declaration

public static MethodInfo DeclaredPropertySetter(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when the property cannot be found

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DeclaredPropertySetter(Type, String)

Gets the reflection information for the setter method of a directly declared property

Declaration

public static MethodInfo DeclaredPropertySetter(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type where the property is declared
System.String	name	The name of the property (case sensitive)

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the property cannot be found

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EnumeratorMoveNext(MethodBase)

Gets the System.Collections.IEnumerator.MoveNext method of an enumerator method

Declaration

public static MethodInfo EnumeratorMoveNext(MethodBase method)

Parameters

Type	Name	Description
System.Reflection.MethodBase	method	Enumerator method that creates the enumerator System.Collections.IEnumerator

Returns

Type	Description
System.Reflection.MethodInfo	The internal System.Collections.IEnumerator.MoveNext method of the enumerator or null if no valid enumerator is detected

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Field(String)

Gets the reflection information for a field by searching the type and all its super types

Declaration

public static FieldInfo Field(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.FieldInfo	A field or null when the field cannot be found

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Field(Type, String)

Gets the reflection information for a field by searching the type and all its super types

Declaration

public static FieldInfo Field(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type where the field is defined
System.String	name	The name of the field (case sensitive)

Returns

Type	Description
System.Reflection.FieldInfo	A field or null when type/name is null or when the field cannot be found

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FieldRefAccess<F>(String)

Creates a field reference delegate for an instance field of a class or static field (NOT an instance field of a struct)

Declaration

public static AccessTools.FieldRef<object, F> FieldRefAccess<F>(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
AccessTools.FieldRef<System.Object, F>	A readable/assignable AccessTools.FieldRef<T, F> delegate with `T=object`

Type Parameters

Name	Description
F	type of the field

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FieldRefAccess<F>(Type, String)

Creates a field reference delegate for an instance field of a class or static field (NOT an instance field of a struct)

Declaration

public static AccessTools.FieldRef<object, F> FieldRefAccess<F>(Type type, string fieldName)

Parameters

Type	Name	Description
System.Type	type	The type that defines the field, or derived class of this type; must not be a struct type unless the field is static
System.String	fieldName	The name of the field

Returns

Type	Description
AccessTools.FieldRef<System.Object, F>	A readable/assignable AccessTools.FieldRef<T, F> delegate with `T=object` (for static fields, the `instance` delegate parameter is ignored)

Type Parameters

Name	Description
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for cases where the given type is only known at runtime and thus can't be used as a type parameter T in e.g. FieldRefAccess<T, F>(String).

This method supports static fields, even those defined in structs, for legacy reasons. Consider using StaticFieldRefAccess<F>(Type, String) (and other overloads) instead for static fields.

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FieldRefAccess<T, F>(T, FieldInfo)

Creates a field reference for an instance field of a class

Declaration

public static ref F FieldRefAccess<T, F>(T instance, FieldInfo fieldInfo)

Parameters

Type	Name	Description
T	instance	The instance
System.Reflection.FieldInfo	fieldInfo	The field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
T	The type that defines the field; or a parent class (including System.Object), implemented interface, or derived class of this type ("`instanceOfT is FieldDeclaringType`" must be possible)
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for one-off access to a field's value for a single instance and where the field has already been obtained. If you need to access a field's value for potentially multiple instances, use FieldRefAccess<T, F>(FieldInfo) instead. FieldRefAccess<T, F>(instance, fieldInfo) is functionally equivalent to FieldRefAccess<T, F>(fieldInfo)(instance).

For backwards compatibility, there is no class constraint on T. Instead, the non-value-type check is done at runtime within the method.

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FieldRefAccess<T, F>(T, String)

Creates an instance field reference for a specific instance of a class

Declaration

public static ref F FieldRefAccess<T, F>(T instance, string fieldName)

Parameters

Type	Name	Description
T	instance	The instance
System.String	fieldName	The name of the field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
T	The class that defines the instance field, or derived class of this type
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for one-off access to a field's value for a single instance. If you need to access a field's value for potentially multiple instances, use FieldRefAccess<T, F>(String) instead. FieldRefAccess<T, F>(instance, fieldName) is functionally equivalent to FieldRefAccess<T, F>(fieldName)(instance).

For backwards compatibility, there is no class constraint on T. Instead, the non-value-type check is done at runtime within the method.

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FieldRefAccess<T, F>(FieldInfo)

Creates a field reference delegate for an instance field of a class or static field (NOT an instance field of a struct)

Declaration

public static AccessTools.FieldRef<T, F> FieldRefAccess<T, F>(FieldInfo fieldInfo)

Parameters

Type	Name	Description
System.Reflection.FieldInfo	fieldInfo	The field

Returns

Type	Description
AccessTools.FieldRef<T, F>	A readable/assignable AccessTools.FieldRef<T, F> delegate

Type Parameters

Name	Description
T	An arbitrary type if the field is static; otherwise the class that defines the field, or a parent class (including System.Object), implemented interface, or derived class of this type ("`instanceOfT is FieldDeclaringType`" must be possible)
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for cases where the field has already been obtained, avoiding the field searching cost in e.g. FieldRefAccess<T, F>(String).

This method supports static fields, even those defined in structs, for legacy reasons. For such static fields, T is effectively ignored. Consider using StaticFieldRefAccess<T, F>(FieldInfo) (and other overloads) instead for static fields.

For backwards compatibility, there is no class constraint on T. Instead, the non-value-type check is done at runtime within the method.

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FieldRefAccess<T, F>(String)

Creates a field reference delegate for an instance field of a class

Declaration

public static AccessTools.FieldRef<T, F> FieldRefAccess<T, F>(string fieldName)

Parameters

Type	Name	Description
System.String	fieldName	The name of the field

Returns

Type	Description
AccessTools.FieldRef<T, F>	A readable/assignable AccessTools.FieldRef<T, F> delegate

Type Parameters

Name	Description
T	The class that defines the instance field, or derived class of this type
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

For backwards compatibility, there is no class constraint on T. Instead, the non-value-type check is done at runtime within the method.

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FindIncludingBaseTypes<T>(Type, Func<Type, T>)

Applies a function going up the type hierarchy and stops at the first non-null result

Declaration

public static T FindIncludingBaseTypes<T>(Type type, Func<Type, T> func)
    where T : class

Parameters

Type	Name	Description
System.Type	type	The class/type to start with
System.Func<System.Type, T>	func	The evaluation function returning T

Returns

Type	Description
T	The first non-`null` result, or `null` if no match

Type Parameters

Name	Description
T	Result type of func()

Remarks

The type hierarchy of a class or value type (including struct) does NOT include implemented interfaces, and the type hierarchy of an interface is only itself (regardless of whether that interface implements other interfaces). The top-most type in the type hierarchy of all non-interface types (including value types) is System.Object.

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FindIncludingInnerTypes<T>(Type, Func<Type, T>)

Applies a function going into inner types and stops at the first non-null result

Declaration

public static T FindIncludingInnerTypes<T>(Type type, Func<Type, T> func)
    where T : class

Parameters

Type	Name	Description
System.Type	type	The class/type to start with
System.Func<System.Type, T>	func	The evaluation function returning T

Returns

Type	Description
T	The first non-`null` result, or `null` if no match

Type Parameters

Name	Description
T	Generic type parameter

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FirstConstructor(Type, Func<ConstructorInfo, Boolean>)

Given a type, returns the first constructor matching a predicate

Declaration

public static ConstructorInfo FirstConstructor(Type type, Func<ConstructorInfo, bool> predicate)

Parameters

Type	Name	Description
System.Type	type	The class/type to start searching at
System.Func<System.Reflection.ConstructorInfo, System.Boolean>	predicate	The predicate to search with

Returns

Type	Description
System.Reflection.ConstructorInfo	The constructor info or null if type/predicate is null or if a type with that name cannot be found

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FirstInner(Type, Func<Type, Boolean>)

Given a type, returns the first inner type matching a recursive search with a predicate

Declaration

public static Type FirstInner(Type type, Func<Type, bool> predicate)

Parameters

Type	Name	Description
System.Type	type	The class/type to start searching at
System.Func<System.Type, System.Boolean>	predicate	The predicate to search with

Returns

Type	Description
System.Type	The inner type or null if type/predicate is null or if a type with that name cannot be found

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FirstMethod(Type, Func<MethodInfo, Boolean>)

Given a type, returns the first method matching a predicate

Declaration

public static MethodInfo FirstMethod(Type type, Func<MethodInfo, bool> predicate)

Parameters

Type	Name	Description
System.Type	type	The class/type to start searching at
System.Func<System.Reflection.MethodInfo, System.Boolean>	predicate	The predicate to search with

Returns

Type	Description
System.Reflection.MethodInfo	The method or null if type/predicate is null or if a type with that name cannot be found

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FirstProperty(Type, Func<PropertyInfo, Boolean>)

Given a type, returns the first property matching a predicate

Declaration

public static PropertyInfo FirstProperty(Type type, Func<PropertyInfo, bool> predicate)

Parameters

Type	Name	Description
System.Type	type	The class/type to start searching at
System.Func<System.Reflection.PropertyInfo, System.Boolean>	predicate	The predicate to search with

Returns

Type	Description
System.Reflection.PropertyInfo	The property or null if type/predicate is null or if a type with that name cannot be found

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GetDeclaredConstructors(Type, Nullable<Boolean>)

Gets reflection information for all declared constructors

Declaration

public static List<ConstructorInfo> GetDeclaredConstructors(Type type, bool? searchForStatic = null)

Parameters

Type	Name	Description
System.Type	type	The class/type where the constructors are declared
System.Nullable<System.Boolean>	searchForStatic	Optional parameters to only consider static constructors

Returns

Type	Description
System.Collections.Generic.List<System.Reflection.ConstructorInfo>	A list of constructor infos

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GetDeclaredFields(Type)

Gets reflection information for all declared fields

Declaration

public static List<FieldInfo> GetDeclaredFields(Type type)

Parameters

Type	Name	Description
System.Type	type	The class/type where the fields are declared

Returns

Type	Description
System.Collections.Generic.List<System.Reflection.FieldInfo>	A list of fields

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GetDeclaredMember<T>(T)

Gets the real implementation of a class member

Declaration

public static T GetDeclaredMember<T>(this T member)
    where T : MemberInfo

Parameters

Type	Name	Description
T	member	A member

Returns

Type	Description
T	The member itself if its declared. Otherwise the member that is actually implemented in some base type

Type Parameters

Name	Description
T

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GetDeclaredMethods(Type)

Gets reflection information for all declared methods

Declaration

public static List<MethodInfo> GetDeclaredMethods(Type type)

Parameters

Type	Name	Description
System.Type	type	The class/type where the methods are declared

Returns

Type	Description
System.Collections.Generic.List<System.Reflection.MethodInfo>	A list of methods

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GetDeclaredProperties(Type)

Gets reflection information for all declared properties

Declaration

public static List<PropertyInfo> GetDeclaredProperties(Type type)

Parameters

Type	Name	Description
System.Type	type	The class/type where the properties are declared

Returns

Type	Description
System.Collections.Generic.List<System.Reflection.PropertyInfo>	A list of properties

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GetDefaultValue(Type)

Gets default value for a specific type

Declaration

public static object GetDefaultValue(Type type)

Parameters

Type	Name	Description
System.Type	type	The class/type

Returns

Type	Description
System.Object	The default value

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GetFieldNames(Object)

Gets the names of all fields that are declared in the type of the instance

Declaration

public static List<string> GetFieldNames(object instance)

Parameters

Type	Name	Description
System.Object	instance	An instance of the type to search in

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of field names

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GetFieldNames(Type)

Gets the names of all fields that are declared in a type

Declaration

public static List<string> GetFieldNames(Type type)

Parameters

Type	Name	Description
System.Type	type	The declaring class/type

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of field names

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GetMethodNames(Object)

Gets the names of all method that are declared in the type of the instance

Declaration

public static List<string> GetMethodNames(object instance)

Parameters

Type	Name	Description
System.Object	instance	An instance of the type to search in

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of method names

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GetMethodNames(Type)

Gets the names of all method that are declared in a type

Declaration

public static List<string> GetMethodNames(Type type)

Parameters

Type	Name	Description
System.Type	type	The declaring class/type

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of method names

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GetOutsideCaller()

Returns who called the current method

Declaration

public static MethodBase GetOutsideCaller()

Returns

Type	Description
System.Reflection.MethodBase	The calling method/constructor (excluding the caller)

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GetPropertyNames(Object)

Gets the names of all properties that are declared in the type of the instance

Declaration

public static List<string> GetPropertyNames(object instance)

Parameters

Type	Name	Description
System.Object	instance	An instance of the type to search in

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of property names

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GetPropertyNames(Type)

Gets the names of all properties that are declared in a type

Declaration

public static List<string> GetPropertyNames(Type type)

Parameters

Type	Name	Description
System.Type	type	The declaring class/type

Returns

Type	Description
System.Collections.Generic.List<System.String>	A list of property names

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GetReturnedType(MethodBase)

Gets the return type of a method or constructor

Declaration

public static Type GetReturnedType(MethodBase methodOrConstructor)

Parameters

Type	Name	Description
System.Reflection.MethodBase	methodOrConstructor	The method/constructor

Returns

Type	Description
System.Type	The return type

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GetTypes(Object[])

Returns an array containing the type of each object in the given array

Declaration

public static Type[] GetTypes(object[] parameters)

Parameters

Type	Name	Description
System.Object[]	parameters	An array of objects

Returns

Type	Description
System.Type[]	An array of types or an empty array if parameters is null (if an object is null, the type for it will be object)

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GetTypesFromAssembly(Assembly)

Gets all successfully loaded types from a given assembly

Declaration

public static Type[] GetTypesFromAssembly(Assembly assembly)

Parameters

Type	Name	Description
System.Reflection.Assembly	assembly	The assembly

Returns

Type	Description
System.Type[]	An array of types

Remarks

This calls and returns System.Reflection.Assembly.GetTypes, while catching any thrown System.Reflection.ReflectionTypeLoadException. If such an exception is thrown, returns the successfully loaded types (System.Reflection.ReflectionTypeLoadException.Types, filtered for non-null values).

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GetUnderlyingType(MemberInfo)

Gets the type of any class member of

Declaration

public static Type GetUnderlyingType(this MemberInfo member)

Parameters

Type	Name	Description
System.Reflection.MemberInfo	member	A member

Returns

Type	Description
System.Type	The class/type of this member

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HarmonyDelegate<DelegateType>(Object)

Creates a delegate for a given delegate definition, attributed with [HarmonyDelegate]

Declaration

public static DelegateType HarmonyDelegate<DelegateType>(object instance = null)
    where DelegateType : Delegate

Parameters

Type	Name	Description
System.Object	instance	Only applies for instance methods. If `null` (default), returned delegate is an open (a.k.a. unbound) instance delegate where an instance is supplied as the first argument to the delegate invocation; else, delegate is a closed (a.k.a. bound) instance delegate where the delegate invocation always applies to the given `instance`.

Returns

Type	Description
DelegateType	A delegate of given `DelegateType` to the method specified via [HarmonyDelegate] attributes on `DelegateType`

Type Parameters

Name	Description
DelegateType	The delegate Type, attributed with [HarmonyDelegate]

Remarks

This calls MethodDelegate<DelegateType>(MethodInfo, Object, Boolean, Type[]) with the method and virtualCall arguments determined from the [HarmonyDelegate] attributes on DelegateType, and the given instance (for closed instance delegates).

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Identifiable(MethodInfo)

Creates an identifiable version of a method

Declaration

public static MethodInfo Identifiable(this MethodInfo method)

Parameters

Type	Name	Description
System.Reflection.MethodInfo	method	The method

Returns

Type	Description
System.Reflection.MethodInfo

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Indexer(Type, Type[])

Gets the reflection information for an indexer property by searching the type and all its super types

Declaration

public static PropertyInfo Indexer(Type type, Type[] parameters = null)

Parameters

Type	Name	Description
System.Type	type	The class/type
System.Type[]	parameters	Optional parameters to target a specific overload of multiple indexers

Returns

Type	Description
System.Reflection.PropertyInfo	An indexer property or null when type is null or when it cannot be found

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IndexerGetter(Type, Type[])

Gets the reflection information for the getter method of an indexer property by searching the type and all its super types

Declaration

public static MethodInfo IndexerGetter(Type type, Type[] parameters = null)

Parameters

Type	Name	Description
System.Type	type	The class/type
System.Type[]	parameters	Optional parameters to target a specific overload of multiple indexers

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type is null or when the indexer property cannot be found

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IndexerSetter(Type, Type[])

Gets the reflection information for the setter method of an indexer property by searching the type and all its super types

Declaration

public static MethodInfo IndexerSetter(Type type, Type[] parameters = null)

Parameters

Type	Name	Description
System.Type	type	The class/type
System.Type[]	parameters	Optional parameters to target a specific overload of multiple indexers

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type is null or when the indexer property cannot be found

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Inner(Type, String)

Given a type, returns the first inner type matching a recursive search by name

Declaration

public static Type Inner(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type to start searching at
System.String	name	The name of the inner type (case sensitive)

Returns

Type	Description
System.Type	The inner type or null if type/name is null or if a type with that name cannot be found

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InnerTypes(Type)

Enumerates all inner types (non-recursive) of a given type

Declaration

public static IEnumerable<Type> InnerTypes(Type type)

Parameters

Type	Name	Description
System.Type	type	The class/type to start with

Returns

Type	Description
System.Collections.Generic.IEnumerable<System.Type>	An enumeration of all inner System.Type

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IsClass(Type)

Tests if a type is a class

Declaration

public static bool IsClass(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type is a class

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IsDeclaredMember<T>(T)

Test if a class member is actually an concrete implementation

Declaration

public static bool IsDeclaredMember<T>(this T member)
    where T : MemberInfo

Parameters

Type	Name	Description
T	member	A member

Returns

Type	Description
System.Boolean	True if the member is a declared

Type Parameters

Name	Description
T

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IsFloatingPoint(Type)

Tests if a type is a floating point type

Declaration

public static bool IsFloatingPoint(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type represents some floating point

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IsInteger(Type)

Tests if a type is an integer type

Declaration

public static bool IsInteger(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type represents some integer

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IsNumber(Type)

Tests if a type is a numerical type

Declaration

public static bool IsNumber(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type represents some number

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IsOfNullableType<T>(T)

Test whether an instance is of a nullable type

Declaration

public static bool IsOfNullableType<T>(T instance)

Parameters

Type	Name	Description
T	instance	An instance to test

Returns

Type	Description
System.Boolean	True if instance is of nullable type, false if not

Type Parameters

Name	Description
T	Type of instance

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IsStatic(MemberInfo)

Tests whether a type or member is static, as defined in C#

Declaration

public static bool IsStatic(MemberInfo member)

Parameters

Type	Name	Description
System.Reflection.MemberInfo	member	The type or member

Returns

Type	Description
System.Boolean	True if the type or member is static

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IsStruct(Type)

Tests if a type is a struct

Declaration

public static bool IsStruct(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type is a struct

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IsValue(Type)

Tests if a type is a value type

Declaration

public static bool IsValue(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type is a value type

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IsVoid(Type)

Tests if a type is void

Declaration

public static bool IsVoid(Type type)

Parameters

Type	Name	Description
System.Type	type	The type

Returns

Type	Description
System.Boolean	True if the type is void

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MakeDeepCopy(Object, Type, Func<String, Traverse, Traverse, Object>, String)

Makes a deep copy of any object

Declaration

public static object MakeDeepCopy(object source, Type resultType, Func<string, Traverse, Traverse, object> processor = null, string pathRoot = "")

Parameters

Type	Name	Description
System.Object	source	The original object
System.Type	resultType	The type of the instance that should be created
System.Func<System.String, Traverse, Traverse, System.Object>	processor	Optional value transformation function (taking a field name and src/dst Traverse instances)
System.String	pathRoot	The optional path root to start with

Returns

Type	Description
System.Object	The copy of the original object

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MakeDeepCopy<T>(Object)

Makes a deep copy of any object

Declaration

public static T MakeDeepCopy<T>(object source)
    where T : class

Parameters

Type	Name	Description
System.Object	source	The original object

Returns

Type	Description
T	A copy of the original object but of type T

Type Parameters

Name	Description
T	The type of the instance that should be created; for legacy reasons, this must be a class or interface

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MakeDeepCopy<T>(Object, out T, Func<String, Traverse, Traverse, Object>, String)

Makes a deep copy of any object

Declaration

public static void MakeDeepCopy<T>(object source, out T result, Func<string, Traverse, Traverse, object> processor = null, string pathRoot = "")

Parameters

Type	Name	Description
System.Object	source	The original object
T	result	[out] The copy of the original object
System.Func<System.String, Traverse, Traverse, System.Object>	processor	Optional value transformation function (taking a field name and src/dst Traverse instances)
System.String	pathRoot	The optional path root to start with

Type Parameters

Name	Description
T	The type of the instance that should be created

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Method(String, Type[], Type[])

Gets the reflection information for a method by searching the type and all its super types

Declaration

public static MethodInfo Method(string typeColonName, Type[] parameters = null, Type[] generics = null)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.
System.Type[]	parameters	Optional parameters to target a specific overload of the method
System.Type[]	generics	Optional list of types that define the generic version of the method

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when the method cannot be found

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Method(Type, String, Type[], Type[])

Gets the reflection information for a method by searching the type and all its super types

Declaration

public static MethodInfo Method(Type type, string name, Type[] parameters = null, Type[] generics = null)

Parameters

Type	Name	Description
System.Type	type	The class/type where the method is declared
System.String	name	The name of the method (case sensitive)
System.Type[]	parameters	Optional parameters to target a specific overload of the method
System.Type[]	generics	Optional list of types that define the generic version of the method

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the method cannot be found

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MethodDelegate<DelegateType>(MethodInfo, Object, Boolean, Type[])

Creates a delegate to a given method

Declaration

public static DelegateType MethodDelegate<DelegateType>(MethodInfo method, object instance = null, bool virtualCall = true, Type[] delegateArgs = null)
    where DelegateType : Delegate

Parameters

Type	Name	Description
System.Reflection.MethodInfo	method	The method to create a delegate from.
System.Object	instance	Only applies for instance methods. If `null` (default), returned delegate is an open (a.k.a. unbound) instance delegate where an instance is supplied as the first argument to the delegate invocation; else, delegate is a closed (a.k.a. bound) instance delegate where the delegate invocation always applies to the given `instance`.
System.Boolean	virtualCall	Only applies for instance methods. If `true` (default) and `method` is virtual, invocation of the delegate calls the instance method virtually (the instance type's most-derived/overriden implementation of the method is called); else, invocation of the delegate calls the exact specified `method` (this is useful for calling base class methods) Note: if `false` and `method` is an interface method, an ArgumentException is thrown.
System.Type[]	delegateArgs	Only applies for instance methods, and if argument `instance` is null. This argument only matters if the target `method` signature contains a value type (such as struct or primitive types), and your `DelegateType` argument is replaced by a non-value type (usually `object`) instead of using said value type. Use this if the generic arguments of `DelegateType` doesn't represent the delegate's arguments, and calling this function fails A delegate of given `DelegateType` to given `method`

Returns

Type	Description
DelegateType

Type Parameters

Name	Description
DelegateType	The delegate Type

Remarks

Delegate invocation is more performant and more convenient to use than System.Reflection.MethodBase.Invoke(System.Object,System.Object[]) at a one-time setup cost. Works for both type of static and instance methods, both open and closed (a.k.a. unbound and bound) instance methods, and both class and struct methods.

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MethodDelegate<DelegateType>(String, Object, Boolean)

Creates a delegate to a given method

Declaration

public static DelegateType MethodDelegate<DelegateType>(string typeColonName, object instance = null, bool virtualCall = true)
    where DelegateType : Delegate

Parameters

Type	Name	Description
System.String	typeColonName	The method in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.
System.Object	instance	Only applies for instance methods. If `null` (default), returned delegate is an open (a.k.a. unbound) instance delegate where an instance is supplied as the first argument to the delegate invocation; else, delegate is a closed (a.k.a. bound) instance delegate where the delegate invocation always applies to the given `instance`.
System.Boolean	virtualCall	Only applies for instance methods. If `true` (default) and `typeColonName` is virtual, invocation of the delegate calls the instance method virtually (the instance type's most-derived/overriden implementation of the method is called); else, invocation of the delegate calls the exact specified `typeColonName` (this is useful for calling base class methods) Note: if `false` and `typeColonName` is an interface method, an ArgumentException is thrown.

Returns

Type	Description
DelegateType	A delegate of given `DelegateType` to given `typeColonName`

Type Parameters

Name	Description
DelegateType	The delegate Type

Remarks

Delegate invocation is more performant and more convenient to use than System.Reflection.MethodBase.Invoke(System.Object,System.Object[]) at a one-time setup cost.

Works for both type of static and instance methods, both open and closed (a.k.a. unbound and bound) instance methods, and both class and struct methods.

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Property(String)

Gets the reflection information for a property by searching the type and all its super types

Declaration

public static PropertyInfo Property(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.PropertyInfo	A property or null when the property cannot be found

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Property(Type, String)

Gets the reflection information for a property by searching the type and all its super types

Declaration

public static PropertyInfo Property(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type
System.String	name	The name

Returns

Type	Description
System.Reflection.PropertyInfo	A property or null when type/name is null or when the property cannot be found

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PropertyGetter(String)

Gets the reflection information for the getter method of a property by searching the type and all its super types

Declaration

public static MethodInfo PropertyGetter(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the property cannot be found

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PropertyGetter(Type, String)

Gets the reflection information for the getter method of a property by searching the type and all its super types

Declaration

public static MethodInfo PropertyGetter(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type
System.String	name	The name

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the property cannot be found

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PropertySetter(String)

Gets the reflection information for the setter method of a property by searching the type and all its super types

Declaration

public static MethodInfo PropertySetter(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the property cannot be found

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PropertySetter(Type, String)

Gets the reflection information for the setter method of a property by searching the type and all its super types

Declaration

public static MethodInfo PropertySetter(Type type, string name)

Parameters

Type	Name	Description
System.Type	type	The class/type
System.String	name	The name

Returns

Type	Description
System.Reflection.MethodInfo	A method or null when type/name is null or when the property cannot be found

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RethrowException(Exception)

Rethrows an exception while preserving its stack trace (throw statement typically clobbers existing stack traces)

Declaration

public static void RethrowException(Exception exception)

Parameters

Type	Name	Description
System.Exception	exception	The exception to rethrow

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StaticFieldRefAccess<F>(FieldInfo)

Creates a static field reference delegate

Declaration

public static AccessTools.FieldRef<F> StaticFieldRefAccess<F>(FieldInfo fieldInfo)

Parameters

Type	Name	Description
System.Reflection.FieldInfo	fieldInfo	The field

Returns

Type	Description
AccessTools.FieldRef<F>	A readable/assignable AccessTools.FieldRef<F> delegate

Type Parameters

Name	Description
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

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StaticFieldRefAccess<F>(String)

Creates a static field reference

Declaration

public static ref F StaticFieldRefAccess<F>(string typeColonName)

Parameters

Type	Name	Description
System.String	typeColonName	The member in the form `TypeFullName:MemberName`, where TypeFullName matches the form recognized by Type.GetType like `Some.Namespace.Type`.

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
F	The type of the field

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StaticFieldRefAccess<F>(Type, String)

Creates a static field reference

Declaration

public static ref F StaticFieldRefAccess<F>(Type type, string fieldName)

Parameters

Type	Name	Description
System.Type	type	The type (can be class or struct) the field is defined in
System.String	fieldName	The name of the field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

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StaticFieldRefAccess<T, F>(FieldInfo)

Creates a static field reference

Declaration

public static ref F StaticFieldRefAccess<T, F>(FieldInfo fieldInfo)

Parameters

Type	Name	Description
System.Reflection.FieldInfo	fieldInfo	The field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
T	An arbitrary type (by convention, the type the field is defined in)
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

The type parameter T is only used in exception messaging and to distinguish between this method overload and the StaticFieldRefAccess<F>(FieldInfo) overload (which returns a AccessTools.FieldRef<F> rather than a reference).

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StaticFieldRefAccess<T, F>(String)

Creates a static field reference

Declaration

public static ref F StaticFieldRefAccess<T, F>(string fieldName)

Parameters

Type	Name	Description
System.String	fieldName	The name of the field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
T	The type (can be class or struct) the field is defined in
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

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StructFieldRefAccess<T, F>(ref T, FieldInfo)

Creates a field reference for an instance field of a struct

Declaration

public static ref F StructFieldRefAccess<T, F>(ref T instance, FieldInfo fieldInfo)
    where T : struct

Parameters

Type	Name	Description
T	instance	The instance
System.Reflection.FieldInfo	fieldInfo	The field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
T	The struct that defines the instance field
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for one-off access to a field's value for a single instance and where the field has already been obtained. If you need to access a field's value for potentially multiple instances, use StructFieldRefAccess<T, F>(FieldInfo) instead. StructFieldRefAccess<T, F>(ref instance, fieldInfo) is functionally equivalent to StructFieldRefAccess<T, F>(fieldInfo)(ref instance).

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StructFieldRefAccess<T, F>(ref T, String)

Creates an instance field reference for a specific instance of a struct

Declaration

public static ref F StructFieldRefAccess<T, F>(ref T instance, string fieldName)
    where T : struct

Parameters

Type	Name	Description
T	instance	The instance
System.String	fieldName	The name of the field

Returns

Type	Description
F	A readable/assignable reference to the field

Type Parameters

Name	Description
T	The struct that defines the instance field
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for one-off access to a field's value for a single instance. If you need to access a field's value for potentially multiple instances, use StructFieldRefAccess<T, F>(String) instead. StructFieldRefAccess<T, F>(ref instance, fieldName) is functionally equivalent to StructFieldRefAccess<T, F>(fieldName)(ref instance).

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StructFieldRefAccess<T, F>(FieldInfo)

Creates a field reference delegate for an instance field of a struct

Declaration

public static AccessTools.StructFieldRef<T, F> StructFieldRefAccess<T, F>(FieldInfo fieldInfo)
    where T : struct

Parameters

Type	Name	Description
System.Reflection.FieldInfo	fieldInfo	The field

Returns

Type	Description
AccessTools.StructFieldRef<T, F>	A readable/assignable AccessTools.StructFieldRef<T, F> delegate

Type Parameters

Name	Description
T	The struct that defines the instance field
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

Remarks

This method is meant for cases where the field has already been obtained, avoiding the field searching cost in e.g. StructFieldRefAccess<T, F>(String).

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StructFieldRefAccess<T, F>(String)

Creates a field reference delegate for an instance field of a struct

Declaration

public static AccessTools.StructFieldRef<T, F> StructFieldRefAccess<T, F>(string fieldName)
    where T : struct

Parameters

Type	Name	Description
System.String	fieldName	The name of the field

Returns

Type	Description
AccessTools.StructFieldRef<T, F>	A readable/assignable AccessTools.StructFieldRef<T, F> delegate

Type Parameters

Name	Description
T	The struct that defines the instance field
F	The type of the field; or if the field's type is a reference type (a class or interface, NOT a struct or other value type), a type that System.Type.IsAssignableFrom(System.Type) that type; or if the field's type is an enum type, either that type or the underlying integral type of that enum type

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ThrowMissingMemberException(Type, String[])

Throws a missing member runtime exception

Declaration

public static void ThrowMissingMemberException(Type type, params string[] names)

Parameters

Type	Name	Description
System.Type	type	The type that is involved
System.String[]	names	A list of names

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TypeByName(String)

Gets a type by name. Prefers a full name with namespace but falls back to the first type matching the name otherwise

Declaration

public static Type TypeByName(string name)

Parameters

Type	Name	Description
System.String	name	The name

Returns

Type	Description
System.Type	A type or null if not found