internal static bool TryParseEnum <TEnum>(ParseResult result, AttributesHelper attributes, string attributeName, out TEnum answer, bool caseSensitive = true) where TEnum : struct
{
XAttribute attr = attributes.PopAttribute(attributeName, caseSensitive);
// If it has the attribute
if (attr != null)
{
// And the attribute has a value
if (attr.Value != null)
{
if (TryParseEnum(attr.Value, out answer))
{
return(true);
}
// Couldn't find matching enum
result.AddWarning($@"Unknown value ""{attr.Value}"" on {attributeName} attribute", GetErrorPositionInfo(attr));
}
// Attribute doesn't have a value
else
{
result.AddWarning($@"Attribute {attributeName} has no value specified", GetErrorPositionInfo(attr));
}
}
// Attribute isn't found, no warning
answer = default(TEnum);
return(false);
}
internal static bool TryParse(ParseResult result, AttributesHelper attributes, string attributeName, out bool answer)
{
XAttribute attr = attributes.PopAttribute(attributeName);
// If it has the attribute
if (attr != null)
{
// And the attribute has a value
if (attr.Value != null)
{
// If it's a bool
if (bool.TryParse(attr.Value, out answer))
{
return(true);
}
// Otherwise warning about not being double
result.AddWarning($@"{attributeName} only accepts boolean values, not ""{attr.Value}""", GetErrorPositionInfo(attr));
}
// Attribute doesn't have a value
else
{
result.AddWarning($@"Attribute {attributeName} has no value specified", GetErrorPositionInfo(attr));
}
}
// Attribute isn't found, no warning
answer = default(bool);
return(false);
}
internal static void AddWarningsForAttributesNotSupportedByVisualizer(ParseResult result, AttributesHelper attributes, params string[] attributeNames)
{
foreach (string attrName in attributeNames)
{
XAttribute a = attributes.PopAttribute(attrName);
if (a != null)
{
result.AddWarning($@"The attribute ""{attrName}"" is a valid attribute, but the Visualizer does not support it.", GetErrorPositionInfo(a));
}
}
}