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FieldDescriptorUtilities.cs
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FieldDescriptorUtilities.cs
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using System;
using System.Collections.Generic;
using System.Reflection;
using HotChocolate.Internal;
using HotChocolate.Types.Descriptors;
using HotChocolate.Types.Descriptors.Definitions;
#nullable enable
namespace HotChocolate.Types.Helpers;
public static class FieldDescriptorUtilities
{
public static void AddExplicitFields<TMember, TField>(
IEnumerable<TField> fieldDefinitions,
Func<TField, TMember?> resolveMember,
IDictionary<string, TField> fields,
ISet<TMember> handledMembers)
where TMember : MemberInfo
where TField : FieldDefinitionBase
{
foreach (var fieldDefinition in fieldDefinitions)
{
if (!fieldDefinition.Ignore && !string.IsNullOrEmpty(fieldDefinition.Name))
{
fields[fieldDefinition.Name] = fieldDefinition;
}
var member = resolveMember(fieldDefinition);
if (member != null)
{
handledMembers.Add(member);
}
}
}
public static void AddImplicitFields<TDescriptor, TMember, TField>(
TDescriptor descriptor,
Func<TMember, TField> createdFieldDefinition,
IDictionary<string, TField> fields,
ISet<TMember> handledMembers)
where TDescriptor : IHasRuntimeType, IHasDescriptorContext
where TMember : MemberInfo
where TField : FieldDefinitionBase
{
AddImplicitFields(
descriptor,
descriptor.RuntimeType,
createdFieldDefinition,
fields,
handledMembers);
}
public static void AddImplicitFields<TDescriptor, TMember, TField>(
TDescriptor descriptor,
Type fieldBindingType,
Func<TMember, TField> createdFieldDefinition,
IDictionary<string, TField> fields,
ISet<TMember> handledMembers,
Func<IReadOnlyList<TMember>, TMember, bool>? include = null,
bool includeIgnoredMembers = false)
where TDescriptor : IHasDescriptorContext
where TMember : MemberInfo
where TField : FieldDefinitionBase
{
if (fieldBindingType != typeof(object))
{
var inspector = descriptor.Context.TypeInspector;
var members = new List<TMember>();
foreach (var member in inspector.GetMembers(fieldBindingType, includeIgnoredMembers))
{
if (member is TMember m)
{
members.Add(m);
}
}
foreach (var member in members)
{
if (include?.Invoke(members, member) ?? true)
{
var fieldDefinition = createdFieldDefinition(member);
if (!string.IsNullOrEmpty(fieldDefinition.Name) &&
!handledMembers.Contains(member) &&
!fields.ContainsKey(fieldDefinition.Name) &&
(includeIgnoredMembers || !fieldDefinition.Ignore))
{
handledMembers.Add(member);
fields[fieldDefinition.Name] = fieldDefinition;
}
}
}
}
}
public static void DiscoverArguments(
IDescriptorContext context,
ICollection<ArgumentDefinition> arguments,
MemberInfo? member,
ParameterInfo[] parameters,
IReadOnlyList<IParameterExpressionBuilder>? parameterExpressionBuilders)
{
if (arguments is null)
{
throw new ArgumentNullException(nameof(arguments));
}
if (member is MethodInfo)
{
var processedNames = TypeMemHelper.RentNameSet();
try
{
foreach (var argument in arguments)
{
if (!string.IsNullOrEmpty(argument.Name))
{
processedNames.Add(argument.Name);
}
}
foreach (var parameter in
context.ResolverCompiler.GetArgumentParameters(
parameters,
parameterExpressionBuilders))
{
var argumentDefinition =
ArgumentDescriptor
.New(context, parameter)
.CreateDefinition();
if (!string.IsNullOrEmpty(argumentDefinition.Name) &&
processedNames.Add(argumentDefinition.Name))
{
arguments.Add(argumentDefinition);
}
}
}
finally
{
TypeMemHelper.Return(processedNames);
}
}
}
}