public override PredicateNode VisitOperator(PredicateParser.OperatorContext context)
{
var terminal = (ITerminalNode)context.GetChild(0);
var symbolType = terminal.Symbol.Type;
switch (symbolType)
{
case PredicateLexer.GreaterThan:
return(CreateOperatorNode(Operator.GreaterThan));
case PredicateLexer.GreaterThanEqual:
return(CreateOperatorNode(Operator.GreaterThanEqual));
case PredicateLexer.LessThan:
return(CreateOperatorNode(Operator.LessThan));
case PredicateLexer.LessThanEqual:
return(CreateOperatorNode(Operator.LessThanEqual));
case PredicateLexer.Equal:
return(CreateOperatorNode(Operator.Equal));
case PredicateLexer.NotEqual:
return(CreateOperatorNode(Operator.NotEqual));
case PredicateLexer.Contains:
return(CreateOperatorNode(Operator.Contains));
}
throw new Exception("Unhandled Operator");
}
/// <summary>
/// Visit a parse tree produced by <see cref="PredicateParser.operator"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitOperator([NotNull] PredicateParser.OperatorContext context)
{
return(VisitChildren(context));
}
