public override object VisitCon_diff([NotNull] StringGrammarParser.Con_diffContext context)
{
string result = "...";
string left = Visit(context.expression(0)).ToString();
string right = Visit(context.expression(1)).ToString();
switch (context.op.Type)
{
case CONCANTENATE:
result = left + right;
break;
case DIFFERENCE:
result = diff(left, right);
break;
}
return(result);
}
/// <summary>
/// Exit a parse tree produced by the <c>con_diff</c>
/// labeled alternative in <see cref="StringGrammarParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitCon_diff([NotNull] StringGrammarParser.Con_diffContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>con_diff</c>
/// labeled alternative in <see cref="StringGrammarParser.expression"/>.
/// <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 VisitCon_diff([NotNull] StringGrammarParser.Con_diffContext context)
{
return(VisitChildren(context));
}