add date element: metanorma/metanorma-standoc#371

Author: opoudjis

grammars/isodoc.rnc

@@ -327,7 +327,7 @@ col = element col {
 
 BibItemType |= "internal"
 
-TextElement |= concept | add | del | span | erefstack
+TextElement |= concept | add | del | span | erefstack | date_inline
 
 add = element add { PureTextElement | eref | erefstack | stem | keyword | xref | hyperlink }
 del = element del { PureTextElement | eref | erefstack | stem | keyword | xref | hyperlink }
@@ -337,6 +337,14 @@ span = element span {
   TextElement+
 }
 
+date_inline = element date {
+  attribute value { text },
+  attribute format { text }?,
+  attribute language { text }?,
+  attribute script { text }?,
+  attribute locale { text }?
+}
+
 concept = element concept {
   attribute bold { xsd:boolean }?,
   attribute ital { xsd:boolean }?,

grammars/isodoc.rng

@@ -1011,6 +1011,7 @@
       <ref name="del"/>
       <ref name="span"/>
       <ref name="erefstack"/>
+      <ref name="date_inline"/>
     </choice>
   </define>
   <define name="add">
@@ -1052,6 +1053,23 @@
       </oneOrMore>
     </element>
   </define>
+  <define name="date_inline">
+    <element name="date">
+      <attribute name="value"/>
+      <optional>
+        <attribute name="format"/>
+      </optional>
+      <optional>
+        <attribute name="language"/>
+      </optional>
+      <optional>
+        <attribute name="script"/>
+      </optional>
+      <optional>
+        <attribute name="locale"/>
+      </optional>
+    </element>
+  </define>
   <define name="concept">
     <element name="concept">
       <optional>