/
EnumBuilder.cs
369 lines (297 loc) · 14.1 KB
/
EnumBuilder.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
/*============================================================
**
**
**
**
**
** EnumBuilder is a helper class to build Enum ( a special type ).
**
**
===========================================================*/
using System.Diagnostics.CodeAnalysis;
using CultureInfo = System.Globalization.CultureInfo;
namespace System.Reflection.Emit
{
public sealed class EnumBuilder : TypeInfo
{
public override bool IsAssignableFrom([NotNullWhen(true)] TypeInfo? typeInfo)
{
if (typeInfo == null) return false;
return IsAssignableFrom(typeInfo.AsType());
}
// Define literal for enum
public FieldBuilder DefineLiteral(string literalName, object? literalValue)
{
// Define the underlying field for the enum. It will be a non-static, private field with special name bit set.
FieldBuilder fieldBuilder = m_typeBuilder.DefineField(
literalName,
this,
FieldAttributes.Public | FieldAttributes.Static | FieldAttributes.Literal);
fieldBuilder.SetConstant(literalValue);
return fieldBuilder;
}
[return: DynamicallyAccessedMembersAttribute(DynamicallyAccessedMemberTypes.All)]
public TypeInfo CreateTypeInfo()
{
return m_typeBuilder.CreateTypeInfo();
}
// CreateType cause EnumBuilder to be baked.
[return: DynamicallyAccessedMembersAttribute(DynamicallyAccessedMemberTypes.All)]
public Type CreateType()
{
return m_typeBuilder.CreateType();
}
// Get the internal metadata token for this class.
internal int TypeToken => m_typeBuilder.TypeToken;
// return the underlying field for the enum
public FieldBuilder UnderlyingField => m_underlyingField;
public override string Name => m_typeBuilder.Name;
/// <summary>
/// abstract methods defined in the base class
/// </summary>
public override Guid GUID => m_typeBuilder.GUID;
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)]
public override object? InvokeMember(
string name,
BindingFlags invokeAttr,
Binder? binder,
object? target,
object?[]? args,
ParameterModifier[]? modifiers,
CultureInfo? culture,
string[]? namedParameters)
{
return m_typeBuilder.InvokeMember(name, invokeAttr, binder, target, args, modifiers, culture, namedParameters);
}
public override Module Module => m_typeBuilder.Module;
public override Assembly Assembly => m_typeBuilder.Assembly;
public override RuntimeTypeHandle TypeHandle => m_typeBuilder.TypeHandle;
public override string? FullName => m_typeBuilder.FullName;
public override string? AssemblyQualifiedName => m_typeBuilder.AssemblyQualifiedName;
public override string? Namespace => m_typeBuilder.Namespace;
public override Type? BaseType => m_typeBuilder.BaseType;
public override bool IsByRefLike => false;
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors | DynamicallyAccessedMemberTypes.NonPublicConstructors)]
protected override ConstructorInfo? GetConstructorImpl(BindingFlags bindingAttr, Binder? binder,
CallingConventions callConvention, Type[] types, ParameterModifier[]? modifiers)
{
return m_typeBuilder.GetConstructor(bindingAttr, binder, callConvention,
types, modifiers);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors | DynamicallyAccessedMemberTypes.NonPublicConstructors)]
public override ConstructorInfo[] GetConstructors(BindingFlags bindingAttr)
{
return m_typeBuilder.GetConstructors(bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods | DynamicallyAccessedMemberTypes.NonPublicMethods)]
protected override MethodInfo? GetMethodImpl(string name, BindingFlags bindingAttr, Binder? binder,
CallingConventions callConvention, Type[]? types, ParameterModifier[]? modifiers)
{
if (types == null)
return m_typeBuilder.GetMethod(name, bindingAttr);
else
return m_typeBuilder.GetMethod(name, bindingAttr, binder, callConvention, types, modifiers);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods | DynamicallyAccessedMemberTypes.NonPublicMethods)]
public override MethodInfo[] GetMethods(BindingFlags bindingAttr)
{
return m_typeBuilder.GetMethods(bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields | DynamicallyAccessedMemberTypes.NonPublicFields)]
public override FieldInfo? GetField(string name, BindingFlags bindingAttr)
{
return m_typeBuilder.GetField(name, bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields | DynamicallyAccessedMemberTypes.NonPublicFields)]
public override FieldInfo[] GetFields(BindingFlags bindingAttr)
{
return m_typeBuilder.GetFields(bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.Interfaces)]
[return: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.Interfaces)]
public override Type? GetInterface(string name, bool ignoreCase)
{
return m_typeBuilder.GetInterface(name, ignoreCase);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.Interfaces)]
public override Type[] GetInterfaces()
{
return m_typeBuilder.GetInterfaces();
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicEvents | DynamicallyAccessedMemberTypes.NonPublicEvents)]
public override EventInfo? GetEvent(string name, BindingFlags bindingAttr)
{
return m_typeBuilder.GetEvent(name, bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicEvents)]
public override EventInfo[] GetEvents()
{
return m_typeBuilder.GetEvents();
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties)]
protected override PropertyInfo GetPropertyImpl(string name, BindingFlags bindingAttr, Binder? binder,
Type? returnType, Type[]? types, ParameterModifier[]? modifiers)
{
throw new NotSupportedException(SR.NotSupported_DynamicModule);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties)]
public override PropertyInfo[] GetProperties(BindingFlags bindingAttr)
{
return m_typeBuilder.GetProperties(bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicNestedTypes | DynamicallyAccessedMemberTypes.NonPublicNestedTypes)]
public override Type[] GetNestedTypes(BindingFlags bindingAttr)
{
return m_typeBuilder.GetNestedTypes(bindingAttr);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicNestedTypes | DynamicallyAccessedMemberTypes.NonPublicNestedTypes)]
public override Type? GetNestedType(string name, BindingFlags bindingAttr)
{
return m_typeBuilder.GetNestedType(name, bindingAttr);
}
[DynamicallyAccessedMembers(GetAllMembers)]
public override MemberInfo[] GetMember(string name, MemberTypes type, BindingFlags bindingAttr)
{
return m_typeBuilder.GetMember(name, type, bindingAttr);
}
[DynamicallyAccessedMembers(GetAllMembers)]
public override MemberInfo[] GetMembers(BindingFlags bindingAttr)
{
return m_typeBuilder.GetMembers(bindingAttr);
}
public override InterfaceMapping GetInterfaceMap([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods | DynamicallyAccessedMemberTypes.NonPublicMethods)] Type interfaceType)
{
return m_typeBuilder.GetInterfaceMap(interfaceType);
}
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicEvents | DynamicallyAccessedMemberTypes.NonPublicEvents)]
public override EventInfo[] GetEvents(BindingFlags bindingAttr)
{
return m_typeBuilder.GetEvents(bindingAttr);
}
protected override TypeAttributes GetAttributeFlagsImpl()
{
return m_typeBuilder.Attributes;
}
public override bool IsTypeDefinition => true;
public override bool IsSZArray => false;
protected override bool IsArrayImpl()
{
return false;
}
protected override bool IsPrimitiveImpl()
{
return false;
}
protected override bool IsValueTypeImpl()
{
return true;
}
protected override bool IsByRefImpl()
{
return false;
}
protected override bool IsPointerImpl()
{
return false;
}
protected override bool IsCOMObjectImpl()
{
return false;
}
public override bool IsConstructedGenericType => false;
public override Type? GetElementType()
{
return m_typeBuilder.GetElementType();
}
protected override bool HasElementTypeImpl()
{
return m_typeBuilder.HasElementType;
}
// Legacy: JScript needs it.
public override Type GetEnumUnderlyingType()
{
return m_underlyingField.FieldType;
}
public override Type UnderlyingSystemType => GetEnumUnderlyingType();
// ICustomAttributeProvider
public override object[] GetCustomAttributes(bool inherit)
{
return m_typeBuilder.GetCustomAttributes(inherit);
}
// Return a custom attribute identified by Type
public override object[] GetCustomAttributes(Type attributeType, bool inherit)
{
return m_typeBuilder.GetCustomAttributes(attributeType, inherit);
}
// Use this function if client decides to form the custom attribute blob themselves
public void SetCustomAttribute(ConstructorInfo con, byte[] binaryAttribute)
{
m_typeBuilder.SetCustomAttribute(con, binaryAttribute);
}
// Use this function if client wishes to build CustomAttribute using CustomAttributeBuilder
public void SetCustomAttribute(CustomAttributeBuilder customBuilder)
{
m_typeBuilder.SetCustomAttribute(customBuilder);
}
// Return the class that declared this Field.
public override Type? DeclaringType => m_typeBuilder.DeclaringType;
// Return the class that was used to obtain this field.
public override Type? ReflectedType => m_typeBuilder.ReflectedType;
// Returns true if one or more instance of attributeType is defined on this member.
public override bool IsDefined(Type attributeType, bool inherit)
{
return m_typeBuilder.IsDefined(attributeType, inherit);
}
/*****************************************************
*
* private/protected functions
*
*/
public override Type MakePointerType()
{
return SymbolType.FormCompoundType("*", this, 0)!;
}
public override Type MakeByRefType()
{
return SymbolType.FormCompoundType("&", this, 0)!;
}
[RequiresDynamicCodeAttribute("The code for an array of the specified type might not be available.")]
public override Type MakeArrayType()
{
return SymbolType.FormCompoundType("[]", this, 0)!;
}
[RequiresDynamicCodeAttribute("The code for an array of the specified type might not be available.")]
public override Type MakeArrayType(int rank)
{
string s = GetRankString(rank);
return SymbolType.FormCompoundType(s, this, 0)!;
}
// Constructs a EnumBuilder.
// EnumBuilder can only be a top-level (not nested) enum type.
[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2064:UnrecognizedReflectionPattern",
Justification = "Reflection.Emit is not subject to trimming")]
internal EnumBuilder(
string name, // name of type
Type underlyingType, // underlying type for an Enum
TypeAttributes visibility, // any bits on TypeAttributes.VisibilityMask)
ModuleBuilder module) // module containing this type
{
// Client should not set any bits other than the visibility bits.
if ((visibility & ~TypeAttributes.VisibilityMask) != 0)
throw new ArgumentException(SR.Argument_ShouldOnlySetVisibilityFlags, nameof(name));
m_typeBuilder = new TypeBuilder(name, visibility | TypeAttributes.Sealed, typeof(System.Enum), null, module, PackingSize.Unspecified, TypeBuilder.UnspecifiedTypeSize, null);
// Define the underlying field for the enum. It will be a non-static, private field with special name bit set.
m_underlyingField = m_typeBuilder.DefineField("value__", underlyingType, FieldAttributes.Public | FieldAttributes.SpecialName | FieldAttributes.RTSpecialName);
}
/*****************************************************
*
* private data members
*
*/
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)]
internal TypeBuilder m_typeBuilder;
private FieldBuilder m_underlyingField;
}
}