public override object VisitEqualityExpr([NotNull] ChessVCParser.EqualityExprContext context)
{
if (context.bop != null)
{
object lhs = deref(Visit(context.equalityExpr()));
object rhs = deref(Visit(context.relationalExpr()));
if (lhs is ChoiceVariable)
{
lhs = ((ChoiceVariable)lhs).Value;
}
if (lhs is string && rhs is string)
{
return(context.bop.Text == "==" ? (string)lhs == (string)rhs : (string)lhs != (string)rhs);
}
throw new Exception("Unsupported equality comparison");
}
return(Visit(context.relationalExpr()));
}
/// <summary>
/// Visit a parse tree produced by <see cref="ChessVCParser.equalityExpr"/>.
/// <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 VisitEqualityExpr([NotNull] ChessVCParser.EqualityExprContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="ChessVCParser.equalityExpr"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitEqualityExpr([NotNull] ChessVCParser.EqualityExprContext context)
{
}
