private static bool?EvaluateDirective(
this DirectiveNode directive,
IVariableCollection variables)
{
if (directive == null)
{
return(null);
}
ArgumentNode argumentNode = directive.Arguments.SingleOrDefault();
if (argumentNode == null)
{
throw new QueryException(new QueryError(
$"The {directive.Name.Value} attribute is not valid."));
}
if (argumentNode.Value is BooleanValueNode b)
{
return(b.Value);
}
if (argumentNode.Value is VariableNode v)
{
return(variables.GetVariable <bool>(v.Name.Value));
}
throw new QueryException(new QueryError(
$"The {directive.Name.Value} if-argument value has to be a 'Boolean'."));
}
private static bool?EvaluateDirective(
this DirectiveNode directive,
IVariableCollection variables)
{
if (directive == null)
{
return(null);
}
ArgumentNode argumentNode = directive.Arguments.SingleOrDefault();
if (argumentNode == null)
{
throw new QueryException(
ErrorBuilder.New()
.SetMessage(string.Format(
CultureInfo.InvariantCulture,
CoreResources
.DirectiveCollectionExtensions_NotValid,
directive.Name.Value))
.Build());
}
if (argumentNode.Value is BooleanValueNode b)
{
return(b.Value);
}
if (argumentNode.Value is VariableNode v)
{
return(variables.GetVariable <bool>(v.Name.Value));
}
throw new QueryException(
ErrorBuilder.New()
.SetMessage(string.Format(
CultureInfo.InvariantCulture,
CoreResources
.DirectiveCollectionExtensions_IfNotBoolean,
directive.Name.Value))
.Build());
}
private static bool IsTrue(
IVariableCollection variables,
IValueNode value)
{
if (value is BooleanValueNode b)
{
return(b.Value);
}
if (value is VariableNode v)
{
return(variables.GetVariable <bool>(v.Name.Value));
}
// TODO: Resources
throw new QueryException(
ErrorBuilder.New()
.SetMessage(
"The skip/include if-argument " +
"value has to be a 'Boolean'.")
.AddLocation(value)
.Build());
}