// Instruction to decrement the value the memory pointer points to
public VisitResult VisitDecrement([Antlr4.Runtime.Misc.NotNull] BFParser.DecrementContext context)
{
var datPtr = GetValue(ptr); // Get our actual pointer.
var dat = GetValue(datPtr); // Get the data pointed to by the memory pointer.
SetValue(datPtr, AddSub(dat, true, 1)); // Set the data to be itself minus 1.
return(null);
}
/// <summary>
/// Exit a parse tree produced by the <c>Decrement</c>
/// labeled alternative in <see cref="BFParser.instruction"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitDecrement([NotNull] BFParser.DecrementContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>Decrement</c>
/// labeled alternative in <see cref="BFParser.instruction"/>.
/// <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 VisitDecrement([NotNull] BFParser.DecrementContext context)
{
return(VisitChildren(context));
}
