public static BaseExpression ExpressionAttributeValue(this XElement el, ParsingEnvironment env, string attributeName)
{
XAttribute attr = el.Attribute(attributeName);
if (attr is null)
{
throw new FileLoadException(el, $"Missing {attributeName} attribute");
}
try
{
return(MyExpressionParser.Parse(env, attr.Value));
}
catch (Exception ex)
{
throw new FileLoadException(attr, "Failed to parse ValueExpr", ex);
}
}
static void ValidateParse(string input, BaseExpression expectedParse)
{
var actual = MyExpressionParser.Parse(null, input);
Assert.AreEqual(expectedParse, actual, $"\nFrom input '{input}'\nexpected:\n{expectedParse}\nactual:\n{actual}");
}