private bool ValidateFunction(GenericFunction term, out StyleValueFunction func)
{
func = StyleValueFunction.Unknown;
if (term.Arguments.Length == 0)
{
m_Errors.AddSemanticError(StyleSheetImportErrorCode.MissingFunctionArgument, term.Name);
return(false);
}
if (term.Name == k_VariableFunctionName)
{
func = StyleValueFunction.Var;
return(ValidateVarFunction(term));
}
try
{
func = StyleValueFunctionExtension.FromUssString(term.Name);
}
catch (Exception)
{
var prop = m_Builder.currentProperty;
m_Errors.AddValidationWarning($"Unknown function {term.Name} in declaration {prop.name}: {term.Name}", prop.line);
return(false);
}
return(true);
}
internal string ReadFunctionName(StyleValueHandle handle)
{
bool flag = handle.valueType != StyleValueType.Function;
string result;
if (flag)
{
Debug.LogErrorFormat(string.Format("Trying to read value of type {0} while reading a value of type {1}", StyleValueType.Function, handle.valueType), new object[0]);
result = string.Empty;
}
else
{
StyleValueFunction valueIndex = (StyleValueFunction)handle.valueIndex;
result = valueIndex.ToUssString();
}
return(result);
}
public static string ToUssString(this StyleValueFunction svf)
{
switch (svf)
{
case StyleValueFunction.Var:
return(k_Var);
case StyleValueFunction.Env:
return(k_Env);
case StyleValueFunction.LinearGradient:
return(k_LinearGradient);
default:
throw new ArgumentOutOfRangeException(nameof(svf), svf, $"Unknown {nameof(StyleValueFunction)}");
}
}
public static string ToUssString(this StyleValueFunction svf)
{
string result;
switch (svf)
{
case StyleValueFunction.Var:
result = "var";
break;
case StyleValueFunction.Env:
result = "env";
break;
case StyleValueFunction.LinearGradient:
result = "linear-gradient";
break;
default:
throw new ArgumentOutOfRangeException("svf", svf, "Unknown StyleValueFunction");
}
return(result);
}
public void AddValue(StyleValueFunction function)
{
// for function we use the index to store the enum value
m_CurrentValues.Add(new StyleValueHandle((int)function, StyleValueType.Function));
}
public void AddValue(StyleValueFunction function)
{
this.m_CurrentValues.Add(new StyleValueHandle((int)function, StyleValueType.Function));
}
