public override FilterDefinition <T> VisitStringOp([NotNull] FilterParser.StringOpContext context)
{
string id = context.ID().GetText();
string str = (context.STRING() ?? context.EMPTY()).GetText().Trim('\'');
var op = context.op.Type;
switch (op)
{
case FilterParser.EQ:
return(_builder.Eq(id, str));
case FilterParser.NE:
return(_builder.Ne(id, str));
default:
throw new InvalidOperationException($"Invalid StringOp {context.GetText()}");
}
}
/// <summary>
/// Visit a parse tree produced by the <c>StringOp</c>
/// labeled alternative in <see cref="FilterParser.expr"/>.
/// <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 VisitStringOp([NotNull] FilterParser.StringOpContext context)
{
return(VisitChildren(context));
}
