How to use

isVariableNameValid

method

in

org.kie.dmn.feel.parser.feel11.FEELParser

/**
 * Either namePart is a string of digits, or it must be a valid name itself 
 */
public static boolean isVariableNamePartValid( String namePart, Scope scope ) {
  if ( DIGITS_PATTERN.matcher(namePart).matches() ) {
    return true;
  }
  if ( REUSABLE_KEYWORDS.contains(namePart) ) {
    return scope.followUp(namePart, true);
  }
  return isVariableNameValid(namePart);
}

@Test
public void testVariableName() {
  String var = "valid variable name";
  assertThat( FEELParser.isVariableNameValid( var ), is( true ) );
}

@Test
public void testVariableNameWithValidCharacters() {
  String var = "?_873./-'+*valid";
  assertThat( FEELParser.isVariableNameValid( var ), is( true ) );
}

@Test
public void testVariableNameWithInvalidCharacterPercent() {
  String var = "?_873./-'%+*valid";
  assertThat( FEELParser.isVariableNameValid( var ), is( false ) );
  assertThat( FEELParser.checkVariableName( var ).get( 0 ).getMessage(), is( Msg.createMessage(Msg.INVALID_VARIABLE_NAME, "character", "%") ) );
}

@Test
public void testVariableNameInvalidStartCharacter() {
  String var = "5variable can't start with a number";
  assertThat( FEELParser.isVariableNameValid( var ), is( false ) );
  assertThat( FEELParser.checkVariableName( var ).get( 0 ).getMessage(), is( Msg.createMessage(Msg.INVALID_VARIABLE_NAME_START, "character", "5") ) );
}

@Test
public void testVariableNameCantStartWithKeyword() {
  String var = "for keyword is an invalid start for a variable name";
  assertThat( FEELParser.isVariableNameValid( var ), is( false ) );
  assertThat( FEELParser.checkVariableName( var ).get( 0 ).getMessage(), is( Msg.createMessage(Msg.INVALID_VARIABLE_NAME_START, "keyword", "for") ) );
}