public override PredicateNode VisitOperand(PredicateParser.OperandContext context)
{
var terminal = (ITerminalNode)context.GetChild(0);
var symbolType = terminal.Symbol.Type;
switch (symbolType)
{
case PredicateLexer.String:
return(new PredicateNode(SymbolType.Operand, new Operand(OperandType.String, terminal.Symbol.Text.Trim('"'))));
case PredicateLexer.Number:
return(new PredicateNode(SymbolType.Operand, new Operand(OperandType.Number, decimal.Parse(terminal.Symbol.Text))));
case PredicateLexer.Property:
return(new PredicateNode(SymbolType.Operand, new Operand(OperandType.Property, terminal.Symbol.Text.Trim('@'))));
}
throw new Exception("Unhandled Operand");
}
/// <summary>
/// Visit a parse tree produced by <see cref="PredicateParser.operand"/>.
/// <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 VisitOperand([NotNull] PredicateParser.OperandContext context)
{
return(VisitChildren(context));
}
