IDEA-68394 XPath 2: wildcard in form of *:NCName in name test is red

plugins/xpath/xpath-lang/src/org/intellij/lang/xpath/XPath2Parser.java

@@ -515,6 +515,21 @@ public class XPath2Parser extends XPathParser {
     return true;
   }
 
+  @Override
+  protected boolean parseWildcard(PsiBuilder builder) {
+    builder.advanceLexer();
+
+    if (builder.getTokenType() == XPathTokenTypes.COL) {
+      builder.advanceLexer();
+      if (builder.getTokenType() != XPathTokenTypes.NCNAME) {
+        builder.error("NCName expected");
+        builder.advanceLexer();
+      }
+    }
+
+    return true;
+  }
+
   @Override
   protected TokenSet unionOps() {
     return XPath2TokenTypes.UNION_OPS;

plugins/xpath/xpath-lang/src/org/intellij/lang/xpath/XPathParser.java

@@ -453,10 +453,9 @@ public class XPathParser implements PsiParser {
   /**
    * [37]    NameTest    ::=    '*' | NCName ':' '*' | QName
    */
-  private static boolean parseNameTest(PsiBuilder builder) {
+  protected boolean parseNameTest(PsiBuilder builder) {
     if (builder.getTokenType() == XPathTokenTypes.STAR) {
-      builder.advanceLexer();
-      return true;
+      return parseWildcard(builder);
     } else if (builder.getTokenType() == XPathTokenTypes.NCNAME) {
       builder.advanceLexer();
 
@@ -477,6 +476,11 @@ public class XPathParser implements PsiParser {
     return false;
   }
 
+  protected boolean parseWildcard(PsiBuilder builder) {
+    builder.advanceLexer();
+    return true;
+  }
+
   /**
    * [5]    AxisSpecifier    ::=    AxisName '::' | AbbreviatedAxisSpecifier
    * <p/>

plugins/xpath/xpath-lang/test/org/intellij/lang/xpath/XPath2ParsingTest.java

@@ -67,6 +67,14 @@ public class XPath2ParsingTest extends TestBase {
     doXPathHighlighting();
   }
 
+  public void testWildcardNamespace() throws Throwable {
+    doXPathHighlighting();
+  }
+
+  public void testInvalidWildcard() throws Throwable {
+    doXPathHighlighting();
+  }
+
   private void doXPathHighlighting(String... moreFiles) throws Throwable {
     final String name = getTestFileName();
     myFixture.testHighlighting(false, false, false, ArrayUtil.append(moreFiles, name + ".xpath2"));

plugins/xpath/xpath-lang/testData/xpath2/parsing/invalidWildcard.xpath2

@@ -0,0 +1 @@
+*:<error descr="NCName expected">*</error>

plugins/xpath/xpath-lang/testData/xpath2/parsing/wildcardNamespace.xpath2

@@ -0,0 +1 @@
+./*:root/*:container[1]