public override VariableValue Evaluate(IVariableStore variables)
{
var left = Left.Evaluate(variables);
var right = Right.Evaluate(variables);
if (left.HasList)
{
var result = left.List.AddVariable(right);
if (result != SetVariableResult.Success)
{
switch (result)
{
case SetVariableResult.NotFound: throw new ExpressionEvaluationException(_missingAddException, Left);
case SetVariableResult.ReadOnly: throw new ExpressionEvaluationException(_readOnlyAddException, Left);
case SetVariableResult.TypeMismatch: throw new ExpressionEvaluationException(_mismatchedAddException, Left, right.Type);
}
}
return(right);
}
else
{
var value = VariableHandler.Add(left, right);
if (value.IsEmpty)
{
throw TypeMismatch(left.Type, right.Type);
}
return(Assign(variables, value));
}
}
public override VariableValue Evaluate(IVariableStore variables)
{
var left = Left.Evaluate(variables);
var right = Right.Evaluate(variables);
var value = VariableHandler.Add(left, right);
if (value.IsEmpty)
{
throw TypeMismatch(left.Type, right.Type);
}
return(value);
}
public override VariableValue Evaluate(IVariableStore variables)
{
var result = Right.Evaluate(variables);
var value = VariableHandler.Add(result, VariableValue.Create(-1));
if (value.IsEmpty)
{
throw TypeMismatch(result.Type);
}
if (Right is IAssignableOperation assignable)
{
assignable.SetValue(variables, value);
return(value);
}
else
{
throw new ExpressionEvaluationException(_invalidAssignmentException, Right);
}
}