add split meta element

core/src/main/scala/eu/nomad_lab/query/MetaElement.scala

@@ -17,7 +17,7 @@ package eu.nomad_lab.query
 
 object MetaElement extends Enumeration {
   type MetaElement = Value
-  val Data, Shape, Length, CIndex = Value
+  val Data, Shape, Length, CIndex, Split = Value
 
   def toString(metaElement: MetaElement): String = {
     metaElement match {
@@ -29,6 +29,8 @@ object MetaElement extends Enumeration {
         "length"
       case CIndex =>
         "c_index"
+      case Split =>
+        "split"
     }
   }
 
@@ -41,6 +43,8 @@ object MetaElement extends Enumeration {
       Length
     else if (Seq("c_index", "cIndex", "g_index", "gIndex").foldLeft(false) { (b: Boolean, x: String) => b || metaElement.compareToIgnoreCase(x) == 0 })
       CIndex
+    else if (metaElement.compareToIgnoreCase("split") == 0)
+      Split
     else
       throw new InvalidTerm(s"MetaElement $metaElement unknown")
   }

core/src/main/scala/eu/nomad_lab/query/QueryExpression.scala

@@ -34,7 +34,7 @@ object AtomicTerm {
   val nrRe = new Regex("""\A\s*((?<sign>[-+]?)(?:(?<nr>(?:[0-9]+\.?[0-9]*|\.[0-9]+)(?:[eE][-+][0-9]+)?)|(?<inf>[Ii][Nn][Ff](?:[Ii][Nn][Ii][Tt][Yy])?)|(?<nan>[Nn][Aa][Nn])))""", "all", "sign", "nr", "inf", "nan")
 
   val termRe = new Regex(
-    """\A\s*(?:(?<not>[Nn][Oo][Tt])\s+)?(?:(?<quantifier>[aA][nN][yY]|[aA][lL][lL](?:|[dD][aA][tT][aA]|[tT][aA][rR][gG][eE][tT])|[mM][aA][tT][cC][hH][iI][nN][gG])\s+)?(?<metaName>[a-zA-Z_0-9]+)(?:.(?<metaElement>shape|length|value|[cg]_?[Ii]ndex))?\s*(?<compareOp>!=|~|==?|<=?|>=?|eq|EQ|mc|MC|ne|NE|lt|LT|le|LE|gt|GT|ge|GE)?\s*""",
+    """\A\s*(?:(?<not>[Nn][Oo][Tt])\s+)?(?:(?<quantifier>[aA][nN][yY]|[aA][lL][lL](?:|[dD][aA][tT][aA]|[tT][aA][rR][gG][eE][tT])|[mM][aA][tT][cC][hH][iI][nN][gG])\s+)?(?<metaName>[a-zA-Z_0-9]+)(?:.(?<metaElement>shape|length|value|[cg]_?[Ii]ndex|split))?\s*(?<compareOp>!=|~|==?|<=?|>=?|eq|EQ|mc|MC|ne|NE|lt|LT|le|LE|gt|GT|ge|GE)?\s*""",
     "not", "quantifier", "metaName", "metaElement", "compareOp"
   )