public OperatorTypeSignature(
SprakType left, SprakType right, InputSides inputs)
{
LeftParam = left;
RightParam = right;
Inputs = inputs;
}
private void AddOperator(MethodInfo methodInfo, SprakOperatorAttribute meta)
{
BuiltInFunction function = new BuiltInFunction(methodInfo, this);
if (!Operator.TryParse(out Operator op, name: meta.OperatorName))
{
string message = $"{MethodName(methodInfo)} is declared to be an unrecognized operator: \"{meta.OperatorName}\"";
throw new ArgumentException(message);
}
int paramCount = function.Parameters.Count;
bool binary = meta.InputsHint == InputSides.Both;
int requiredCount = binary ? 2 : 1;
if (paramCount != requiredCount)
{
string desc = binary ? "binary" : "unary";
string message = $"{MethodName(methodInfo)} was declared to be the {desc} operator \"{meta.OperatorName}\", " +
$"but has {function.Parameters.Count} Sprak arguments";
throw new ArgumentException(message);
}
InputSides inputs = meta.InputsHint;
SprakType left = null;
SprakType right = null;
switch (inputs)
{
case InputSides.Both:
left = function.Parameters[0];
right = function.Parameters[1];
break;
case InputSides.Left:
left = function.Parameters[0];
break;
case InputSides.Right:
right = function.Parameters[0];
break;
}
OperatorTypeSignature typeSignature
= new OperatorTypeSignature(left, right, inputs);
OperatorSignature signature = new OperatorSignature(op.Name, typeSignature);
_operators.Add(signature, function);
}
public SprakOperatorAttribute(string opName,
InputSides inputHint = InputSides.Both)
{
OperatorName = opName;
InputsHint = inputHint;
}
