private static bool TryCheckForQueryTypes(
this ParameterInfo parameter,
out FieldResolverArgumentKind argumentKind)
{
if (parameter.ParameterType == typeof(DocumentNode))
{
argumentKind = FieldResolverArgumentKind.QueryDocument;
return(true);
}
if (parameter.ParameterType == typeof(OperationDefinitionNode))
{
argumentKind = FieldResolverArgumentKind.OperationDefinition;
return(true);
}
if (parameter.ParameterType == typeof(FieldNode))
{
argumentKind = FieldResolverArgumentKind.FieldSelection;
return(true);
}
argumentKind = default(FieldResolverArgumentKind);
return(false);
}
private FieldResolverArgumentDescriptor(
string name, FieldResolverArgumentKind kind, Type type)
{
Name = name;
Kind = kind;
Type = type;
}
private static bool TryCheckForResolverArguments(
this ParameterInfo parameter,
Type sourceType,
out FieldResolverArgumentKind argumentKind)
{
if (parameter.ParameterType == sourceType)
{
argumentKind = FieldResolverArgumentKind.Source;
return(true);
}
if (parameter.ParameterType == typeof(IResolverContext))
{
argumentKind = FieldResolverArgumentKind.Context;
return(true);
}
if (parameter.ParameterType == typeof(CancellationToken))
{
argumentKind = FieldResolverArgumentKind.CancellationToken;
return(true);
}
argumentKind = default(FieldResolverArgumentKind);
return(false);
}
private static bool TryCheckForExtensions(
this ParameterInfo parameter,
out FieldResolverArgumentKind argumentKind)
{
if (parameter.IsDataLoader())
{
argumentKind = FieldResolverArgumentKind.DataLoader;
return(true);
}
if (parameter.IsState())
{
argumentKind = FieldResolverArgumentKind.CustomContext;
return(true);
}
if (parameter.IsService())
{
argumentKind = FieldResolverArgumentKind.Service;
return(true);
}
argumentKind = default(FieldResolverArgumentKind);
return(false);
}
internal FieldResolverArgumentDescriptor(
string name, string variableName,
FieldResolverArgumentKind kind, Type type)
{
Name = name;
VariableName = variableName;
Kind = kind;
Type = type;
}
public static FieldResolverArgumentDescriptor Create(
string name, FieldResolverArgumentKind kind, Type type)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException(nameof(name));
}
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
return(new FieldResolverArgumentDescriptor(name, kind, type));
}
internal static IReadOnlyCollection <FieldResolverArgumentDescriptor> CreateResolverArgumentDescriptors(
MethodInfo method, Type resolverType, Type sourceType)
{
List <FieldResolverArgumentDescriptor> arguments =
new List <FieldResolverArgumentDescriptor>();
foreach (ParameterInfo parameter in method.GetParameters())
{
FieldResolverArgumentKind kind = FieldResolverArgumentDescriptor
.LookupKind(parameter.ParameterType, sourceType);
arguments.Add(FieldResolverArgumentDescriptor.Create(
parameter.Name, kind, parameter.ParameterType));
}
return(arguments);
}
internal static IReadOnlyCollection <FieldResolverArgumentDescriptor> CreateResolverArgumentDescriptors(
MethodInfo method, Type sourceType)
{
var arguments = new List <FieldResolverArgumentDescriptor>();
int i = 0;
foreach (ParameterInfo parameter in method.GetParameters())
{
FieldResolverArgumentKind kind = FieldResolverArgumentDescriptor
.LookupKind(parameter.ParameterType, sourceType);
string variableName = $"v{i++}_{parameter.Name}";
arguments.Add(new FieldResolverArgumentDescriptor(
parameter.Name, variableName, kind, parameter.ParameterType));
}
return(arguments);
}
private static bool TryCheckForSchemaTypes(
this ParameterInfo parameter,
out FieldResolverArgumentKind argumentKind)
{
if (parameter.ParameterType == typeof(ISchema))
{
argumentKind = FieldResolverArgumentKind.Schema;
return(true);
}
if (parameter.ParameterType == typeof(Schema))
{
argumentKind = FieldResolverArgumentKind.Schema;
return(true);
}
if (parameter.ParameterType == typeof(ObjectType))
{
argumentKind = FieldResolverArgumentKind.ObjectType;
return(true);
}
if (parameter.ParameterType == typeof(IOutputField))
{
argumentKind = FieldResolverArgumentKind.Field;
return(true);
}
if (parameter.ParameterType == typeof(ObjectField))
{
argumentKind = FieldResolverArgumentKind.Field;
return(true);
}
argumentKind = default(FieldResolverArgumentKind);
return(false);
}
