public static ParameterBuilder BuildParameter(ParameterInfo parameterInfo, bool last)
{
var builder = new ParameterBuilder();
var attributes = parameterInfo.GetCustomAttributes(false);
for (var i = 0; i < attributes.Length; i++)
{
switch (attributes[i])
{
case NameAttribute nameAttribute:
builder.WithName(nameAttribute.Name);
break;
case DescriptionAttribute descriptionAttribute:
builder.WithDescription(descriptionAttribute.Description);
break;
case RemarksAttribute remarksAttribute:
builder.WithRemarks(remarksAttribute.Remarks);
break;
case ParamArrayAttribute _:
if (!last)
{
throw new InvalidOperationException($"A params array parameter must be the last parameter in a command. Parameter: {parameterInfo.Name} in {parameterInfo.Member.Name} in {parameterInfo.Member.DeclaringType.Name}.");
}
builder.WithIsMultiple(true)
.WithType(parameterInfo.ParameterType.GetElementType());
break;
case RemainderAttribute _:
if (!last)
{
throw new InvalidOperationException($"A remainder parameter must be the last parameter in a command. Parameter: {parameterInfo.Name} in {parameterInfo.Member.Name} in {parameterInfo.Member.DeclaringType.Name}.");
}
builder.WithIsRemainder(true);
break;
case OverwriteTypeParserAttribute overwriteTypeParserAttribute:
builder.CustomTypeParserType = overwriteTypeParserAttribute.CustomTypeParserType;
break;
case ParameterCheckBaseAttribute parameterCheckAttribute:
builder.AddCheck(parameterCheckAttribute);
break;
case Attribute attribute:
builder.AddAttribute(attribute);
break;
}
}
if (parameterInfo.HasDefaultValue)
{
builder.WithIsOptional(true)
.WithDefaultValue(parameterInfo.DefaultValue);
}
if (!builder.IsMultiple)
{
builder.WithType(parameterInfo.ParameterType);
}
if (builder.Name is null)
{
builder.WithName(parameterInfo.Name);
}
return(builder);
}
public static ParameterBuilder CreateParameterBuilder(CommandBuilder command, ParameterInfo parameterInfo, bool last)
{
var builder = new ParameterBuilder(parameterInfo.ParameterType, command);
var attributes = parameterInfo.GetCustomAttributes(false);
for (var i = 0; i < attributes.Length; i++)
{
switch (attributes[i])
{
case NameAttribute nameAttribute:
builder.WithName(nameAttribute.Value);
break;
case DescriptionAttribute descriptionAttribute:
builder.WithDescription(descriptionAttribute.Value);
break;
case RemarksAttribute remarksAttribute:
builder.WithRemarks(remarksAttribute.Value);
break;
case ParamArrayAttribute _:
if (!last)
{
throw new ParameterBuildingException(builder, $"A params array parameter must be the last parameter in a command. Parameter: {parameterInfo.Name} in {parameterInfo.Member.Name} in {parameterInfo.Member.DeclaringType}.");
}
builder.WithIsMultiple(true);
builder.Type = parameterInfo.ParameterType.GetElementType();
break;
case RemainderAttribute _:
if (!last)
{
throw new ParameterBuildingException(builder, $"A remainder parameter must be the last parameter in a command. Parameter: {parameterInfo.Name} in {parameterInfo.Member.Name} in {parameterInfo.Member.DeclaringType}.");
}
builder.WithIsRemainder(true);
break;
case OverrideTypeParserAttribute overrideTypeParserAttribute:
builder.WithCustomTypeParserType(overrideTypeParserAttribute.Value);
if (overrideTypeParserAttribute.GetType() != typeof(OverrideTypeParserAttribute))
{
builder.AddAttribute(overrideTypeParserAttribute);
}
break;
case ParameterCheckAttribute parameterCheckAttribute:
builder.AddCheck(parameterCheckAttribute);
break;
case Attribute attribute:
builder.AddAttribute(attribute);
break;
}
}
if (parameterInfo.HasDefaultValue)
{
builder.WithIsOptional(true)
.WithDefaultValue(parameterInfo.DefaultValue);
}
else if (builder.IsMultiple)
{
builder.WithIsOptional(true)
.WithDefaultValue(Array.CreateInstance(builder.Type, 0));
}
if (builder.Name == null)
{
builder.WithName(parameterInfo.Name);
}
return(builder);
}
internal ParameterBuildingException(ParameterBuilder parameterBuilder, string message) : base(message)
=> ParameterBuilder = parameterBuilder;