// Move our pointer to the left.
public VisitResult VisitMove_Left([Antlr4.Runtime.Misc.NotNull] BFParser.Move_LeftContext context)
{
if (memPos == 0) // Wrap around to the furthest right.
{
memPos += memSize - 1;
var datPtr = GetValue(ptr); // Get data pointer.
SetValue(ptr, IntToPtr(AddSub32(PtrToInt(datPtr), false, memSize - 1))); // Do the math operations to our pointer, which involves converting it than reconverting it.
}
else // Move left.
{
memPos--;
var datPtr = GetValue(ptr); // Get data pointer.
SetValue(ptr, IntToPtr(AddSub32(PtrToInt(datPtr), true, 1))); // Do the math operations to our pointer, which involves converting it than reconverting it.
}
return(null);
}
/// <summary>
/// Exit a parse tree produced by the <c>Move_Left</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 ExitMove_Left([NotNull] BFParser.Move_LeftContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>Move_Left</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 VisitMove_Left([NotNull] BFParser.Move_LeftContext context)
{
return(VisitChildren(context));
}