<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  version="1.0">
  <xs:element name="disptext" type="disptextElemType"/>
  <xs:complexType name="disptextElemType">
    <xs:sequence>
      <xs:element ref="operators"/>
      <xs:choice>
        <xs:element ref="default"/>
        <xs:sequence>
          <xs:element ref="productAttributes"/>
          <xs:element ref="conditions"/>
        </xs:sequence>
      </xs:choice>
      <xs:element ref="conditionType" minOccurs="0" maxOccurs="unbounded"/>
      <xs:element ref="property" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
  <xs:element name="operators" type="operatorsElemType"/>
  <xs:complexType name="operatorsElemType">
    <xs:sequence>
      <xs:element ref="and"/>
      <xs:element ref="or"/>
      <xs:element ref="openGroup"/>
      <xs:element ref="closeGroup"/>
      <xs:element ref="set"/>
      <xs:element ref="range"/>
    </xs:sequence>
  </xs:complexType>
  <xs:element name="and" type="xs:string"/>
  <xs:element name="or" type="xs:string"/>
  <xs:element name="openGroup" type="xs:string"/>
  <xs:element name="closeGroup" type="xs:string"/>
  <xs:element name="set" type="xs:string"/>
  <xs:element name="range" type="xs:string"/>
  <xs:group name="rulesElemGroup">
    <xs:choice>
      <xs:element ref="name"/>
      <xs:element ref="text"/>
      <xs:element ref="values"/>
    </xs:choice>
  </xs:group>
  <xs:element name="default" type="defaultElemType"/>
  <xs:complexType name="defaultElemType">
    <xs:group ref="rulesElemGroup" minOccurs="0" maxOccurs="unbounded"/>
  </xs:complexType>
  <xs:element name="productAttributes" type="defaultElemType"/>
  <xs:element name="conditions" type="defaultElemType"/>
  <xs:element name="property" type="propertyElemType"/>
  <xs:complexType name="propertyElemType">
    <xs:group ref="rulesElemGroup" minOccurs="0" maxOccurs="unbounded"/>
    <xs:attribute ref="ident" use="required"/>
    <xs:attribute name="type" type="applicPropertyTypeAttType" use="required"/>
  </xs:complexType>
  <xs:attribute name="ident" type="xs:NCName"/>
  <xs:simpleType name="applicPropertyTypeAttType">
    <xs:restriction base="xs:NMTOKEN">
      <xs:enumeration value="condition"/>
      <xs:enumeration value="prodattr"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:element name="name" type="nameElemType"/>
  <xs:complexType name="nameElemType"/>
  <xs:element name="text" type="xs:string"/>
  <xs:element name="values" type="valuesElemType"/>
  <xs:complexType name="valuesElemType">
    <xs:sequence>
      <xs:element ref="value" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
  <xs:element name="value" type="valueElemType"/>
  <xs:complexType name="valueElemType" mixed="true">
    <xs:attribute name="match" type="applicPropertyValueAttType" use="required"/>
  </xs:complexType>
  <xs:simpleType name="applicPropertyValueAttType">
    <xs:restriction base="xs:string">
      <xs:pattern value="[^|~]*"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:element name="conditionType" type="conditionTypeElemType"/>
  <xs:complexType name="conditionTypeElemType">
    <xs:group ref="rulesElemGroup" minOccurs="0" maxOccurs="unbounded"/>
    <xs:attribute ref="ident" use="required"/>
  </xs:complexType>
</xs:schema>