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style: reduce complexity of command arg parsing

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Oliver Booth 2023-05-08 15:59:39 +01:00
parent 268c359f3a
commit 7084fc3f4a
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GPG Key ID: 20BEB9DC87961025
1 changed files with 46 additions and 39 deletions
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85
VpSharp.Commands/CommandsExtension.cs
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@ -211,45 +211,7 @@ public sealed class CommandsExtension : VirtualParadiseClientExtension
}
object?[] arguments = {context};
if (rawArguments.Length > 0)
{
spaceIndex = rawArguments.IndexOf(' ');
if (spaceIndex == -1)
{
Array.Resize(ref arguments, 2);
arguments[1] = rawArguments.ToString();
}
else
{
var appendLast = true;
for (var argumentIndex = 1; spaceIndex > -1; argumentIndex++)
{
Array.Resize(ref arguments, argumentIndex + 1);
if (argumentIndex == command.Parameters.Length)
{
if (command.Parameters[argumentIndex - 1].GetCustomAttribute<RemainderAttribute>() is not null)
{
appendLast = false;
arguments[argumentIndex] = rawArguments.ToString();
break;
}
}
arguments[argumentIndex] = rawArguments[..spaceIndex].ToString();
rawArguments = rawArguments[(spaceIndex + 1)..];
spaceIndex = rawArguments.IndexOf(' ');
argumentIndex++;
}
if (appendLast)
{
Array.Resize(ref arguments, arguments.Length + 1);
arguments[^1] = rawArguments.ToString();
}
}
}
arguments = ParseArguments(rawArguments, arguments, command);
ParameterInfo[] parameters = commandMethod.GetParameters();
if (parameters.Length != arguments.Length || parameters[arguments.Length..].Any(p => !p.IsOptional))
@ -302,6 +264,51 @@ public sealed class CommandsExtension : VirtualParadiseClientExtension
return base.OnMessageReceived(message);
}
private static object?[] ParseArguments(ReadOnlySpan<char> rawArguments, object?[] arguments, Command command)
{
if (rawArguments.Length <= 0)
{
return arguments;
}
int spaceIndex = rawArguments.IndexOf(' ');
if (spaceIndex == -1)
{
Array.Resize(ref arguments, 2);
arguments[1] = rawArguments.ToString();
return arguments;
}
var appendLast = true;
for (var argumentIndex = 1; spaceIndex > -1; argumentIndex++)
{
Array.Resize(ref arguments, argumentIndex + 1);
if (argumentIndex == command.Parameters.Length)
{
if (command.Parameters[argumentIndex - 1].GetCustomAttribute<RemainderAttribute>() is not null)
{
appendLast = false;
arguments[argumentIndex] = rawArguments.ToString();
break;
}
}
arguments[argumentIndex] = rawArguments[..spaceIndex].ToString();
rawArguments = rawArguments[(spaceIndex + 1)..];
spaceIndex = rawArguments.IndexOf(' ');
argumentIndex++;
}
if (appendLast)
{
Array.Resize(ref arguments, arguments.Length + 1);
arguments[^1] = rawArguments.ToString();
}
return arguments;
}
private void RegisterCommandMethod(CommandModule module, MethodInfo methodInfo)
{
var commandAttribute = methodInfo.GetCustomAttribute<CommandAttribute>();