private void InitializeParameters()
{
var args = new List <Parameter>();
var state = ParseState.Normal;
var argName = new StringBuilder();
var defaultValue = new StringBuilder();
var kind = ParameterType.Required;
void InternalReset()
{
state = ParseState.Normal;
argName.Clear();
defaultValue.Clear();
kind = ParameterType.Required;
}
for (var index = 0; index < _parameterDescription.Length; index++)
{
var c = _parameterDescription[index];
switch (c)
{
case LeftBracket:
if (state != ParseState.Normal)
{
throw new CommandParseException($"invalid {c} here", _parameterDescription, index);
}
state = ParseState.InsideBracket;
continue;
case RightBracket:
if (state != ParseState.InsideBracket)
{
throw new CommandParseException($"invalid {c} here", _parameterDescription, index);
}
if (argName.Length == 0)
{
throw new CommandParseException("Argument must have a name", _parameterDescription, index);
}
args.Add(new Parameter(kind, argName.ToString(), defaultValue.ToString()));
InternalReset();
state = ParseState.Normal;
continue;
}
switch (state)
{
case ParseState.Normal:
// do nothing
break;
case ParseState.InsideBracket:
if (VanRegex.IsMatch(c.ToString()))
{
argName.Append(c);
}
else
{
switch (c)
{
case DefaultValueRepresentation:
while ((c = _parameterDescription[++index]) != RightBracket)
{
defaultValue.Append(c);
}
index--;
kind = ParameterType.DefaultValue;
continue;
case SpecialValueRepresentation: // special value
var special = new StringBuilder();
while ((c = _parameterDescription[++index]) != RightBracket)
{
special.Append(c);
}
index--;
argName = special;
switch (special.ToString().Trim())
{
case "Player":
kind = ParameterType.PlayerName;
continue;
}
continue;
case OptionalRepresentation: // optional
if (argName.Length != 0)
{
throw new CommandParseException("Wrong position for " + OptionalRepresentation, _parameterDescription, index);
}
kind = ParameterType.NotRequired;
continue;
default:
throw new CommandParseException("Invalid character " + c, _parameterDescription, index);
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
if (state != ParseState.Normal)
{
throw new CommandParseException("Unexpected ending", _parameterDescription, _parameterDescription.Length - 1);
}
Parameters = args.ToArray();
_fewestParamCount = (byte)Parameters.Count(x => x.Type == ParameterType.Required);
}
private void InitializeCommandLines()
{
var lines = new List <string>();
foreach (var line in _commandLines)
{
var state = ParseState.Normal;
var argName = new StringBuilder();
var format = new StringBuilder();
foreach (var c in line)
{
switch (c)
{
case LeftBracket:
if (state != ParseState.Normal)
{
throw new CommandParseException($"invalid {c} here");
}
state = ParseState.InsideBracket;
continue;
case RightBracket:
if (state != ParseState.InsideBracket)
{
throw new CommandParseException($"invalid {c} here");
}
var name = argName.ToString();
if (name.Length == 0)
{
throw new CommandParseException("Parameter must have a name");
}
var formatIndex = Array.FindIndex(Parameters, x => x.Name.Equals(name, StringComparison.Ordinal));
if (formatIndex == -1)
{
throw new CommandParseException("Undeclared parameter: " + name);
}
format.AppendFormat("{{{0}}}", formatIndex);
argName.Clear();
state = ParseState.Normal;
continue;
}
switch (state)
{
case ParseState.Normal:
format.Append(c);
break;
case ParseState.InsideBracket:
if (VanRegex.IsMatch(c.ToString()))
{
argName.Append(c);
}
break;
}
}
lines.Add(format.ToString());
}
FormatLines = lines.ToArray();
}
