public static object GetClassConstant(DTypeDesc type, string constantName, DTypeDesc caller, ScriptContext context)
{
if (type == null) return null;
// lookup the constant desc
DConstantDesc constant;
switch (type.GetConstant(new VariableName(constantName), caller, out constant))
{
case GetMemberResult.NotFound:
{
PhpException.Throw(PhpError.Error, CoreResources.GetString("undefined_class_constant",
type.MakeFullName(), constantName));
return null;
}
case GetMemberResult.BadVisibility:
{
PhpException.ConstantNotAccessible(
constant.DeclaringType.MakeFullName(),
constantName,
(caller == null ? String.Empty : caller.MakeFullName()),
constant.IsProtected);
return null;
}
}
// make sure that the constant has been initialized for this request
return PhpVariable.Dereference(constant.GetValue(context));
}
