private IntItem buildLessThanOrEquals(OperatorNode<ExpressionOperator> ast) {
        if (isIndexOnLeftHandSide(ast)) {
            IntItem number = new IntItem("[;" + fetchConditionWord(ast) + "]", fetchConditionIndex(ast));
            return leafStyleSettings(ast.getArgument(1, OperatorNode.class), number);
        } else {
            IntItem number = new IntItem("[" + fetchConditionWord(ast) + ";]", fetchConditionIndex(ast));
            return leafStyleSettings(ast.getArgument(0, OperatorNode.class), number);
        }
    }
The YQL query language.

This class <em>must</em> be kept in lockstep with {@link VespaSerializer}.
Adding anything here will usually require a corresponding addition in
VespaSerializer.

@author Steinar Knutsen
@author Stian Kristoffersen
@author Simon Thoresen Hult
container-search/src/main/java/com/yahoo/search/yql/YqlParser.java