private static void ApplyOption(ref RunContext ctx, IOptionToken token)
{
Option?opt = null;
if (token is ShortOptionToken shortOpt)
{
opt = ctx.Command.Options.SingleOrDefault(o => o.ShortName == shortOpt.Content);
}
else if (token is LongOptionToken longOpt)
{
opt = ctx.Command.Options.SingleOrDefault(o => o.LongName == longOpt.Content);
}
if (opt == null)
{
throw new RunException($"Unknown option at position {token.Position}");
}
if (!TryTakeValue(ref ctx, opt.ValueType, out var value))
{
if (opt.ValueType == typeof(bool))
{
value = true;
}
else
{
throw new RunException($"Expected value at position {ctx.Tokens.PeekOrDefault()?.Position}");
}
}
ValueSetter.SetValue(ctx.OptionsObj, opt.MemberExpression, value);
}
private static object TakeArray <T>(RunContext ctx)
{
var list = new List <T>();
while (ctx.Tokens.PeekOrDefault() is StringToken strToken)
{
ctx.Tokens.Dequeue();
if (!ValueSetter.TryParseValue(strToken.Content, typeof(T), out var obj))
{
throw new RunException($"Cannot parse value into {typeof(T).Name} at position {strToken.Position}");
}
list.Add((T)obj);
}
return(list.ToArray());
}
private static bool TryTakeValue(ref RunContext ctx, Type valueType, [MaybeNullWhen(false)] out object value)
{
if (valueType.IsArray)
{
var del = (TakeArrayDelegate)typeof(YaclipApp).GetMethod(nameof(TakeArray), BindingFlags.NonPublic | BindingFlags.Static).MakeGenericMethod(valueType.GetElementType()).CreateDelegate(typeof(TakeArrayDelegate));
value = del(ctx);
return(true);
}
if (!(ctx.Tokens.PeekOrDefault() is StringToken strToken))
{
value = null;
return(false);
}
ctx.Tokens.Dequeue();
return(ValueSetter.TryParseValue(strToken.Content, valueType, out value));
}
private static void ApplyArgument(ref RunContext ctx)
{
if (ctx.SetArgumentsCount == ctx.Command.Arguments.Length)
{
throw new RunException("Argument found when no more were necessary");
}
var arg = ctx.Command.Arguments[ctx.SetArgumentsCount];
ctx.SetArgumentsCount++;
if (!TryTakeValue(ref ctx, arg.Type, out var value))
{
throw new RunException($"Cannot parse value at position {ctx.Tokens.PeekOrDefault()?.Position}");
}
ValueSetter.SetValue(ctx.OptionsObj, arg.MemberExpression, value);
}
private static void ApplyOption(ref RunContext ctx, IOptionToken token)
{
Option?opt = null;
if (token is ShortOptionToken shortOpt)
{
opt = ctx.Command.Options.SingleOrDefault(o => o.ShortName == shortOpt.Content);
}
else if (token is LongOptionToken longOpt)
{
opt = ctx.Command.Options.SingleOrDefault(o => o.LongName == longOpt.Content);
}
if (opt == null)
{
throw new RunException($"Unknown option at position {token.Position}");
}
var propertyType = opt.ValueType;
bool isList = false;
if (propertyType.IsGenericType && propertyType.GetGenericTypeDefinition() == typeof(IList <>))
{
propertyType = propertyType.GetGenericArguments()[0];
isList = true;
}
if (!TryTakeValue(ref ctx, propertyType, out var value))
{
if (opt.ValueType == typeof(bool))
{
value = true;
}
else
{
throw new RunException($"Expected value at position {ctx.Tokens.PeekOrDefault()?.Position}");
}
}
ValueSetter.SetValue(ctx.OptionsObj, opt.MemberExpression, value, isList);
}