====== Kurs XML - Zadanie 9. ======
===== Treść =====
Consider a toy variant of XHTML named ToyXHTML whose syntax may be described as follows:
  *The root element named doc contains a sequence of p and h1 elements.
  *An h1 element may contain character data but no subelements.
  *Each p element contains text (character data) that may be marked up with em and a elements.
  *Every a element has either a name attribute or an href attribute (not both!), and the value of the latter must be a URI.
Formalize the syntax of ToyXHTML using your favorite schema language.

===== Rozwiązanie =====
<file xml zadanie09.xml>
datatypes xs = "http://www.w3.org/2001/XMLSchema-datatypes"
element doc {
  (
    element p {
      (
        text |
        element em { text } |
        element a {
          (attribute name { text } |
          attribute href { xs:anyURI }),
          text
        }
      )*
    } |
    element h1 { text }
  )*
}
</file>

{{tag>[listy_zadan]}}