/// <summary>
/// Visits the port pulses
/// </summary>
/// <param name="line">Line to add the tag for</param>
/// <param name="context">PortPulseNode to visit</param>
/// <param name="lineNo">Current line numer</param>
/// <param name="collectedSpans">Collection of spancs found</param>
private void Visit(ITextSnapshotLine line, PortPulseNode context, int lineNo, List <TagSpan <Z80TestTokenTag> > collectedSpans)
{
if (context == null ||
lineNo < context.Span.StartLine ||
lineNo > context.Span.EndLine)
{
return;
}
Visit(line, context.ValueExpr, lineNo, collectedSpans);
Visit(line, context.Pulse1Expr, lineNo, collectedSpans);
Visit(line, context.Pulse2Expr, lineNo, collectedSpans);
}
/// <summary>
/// Visits the port pulses
/// </summary>
/// <param name="line">Line to add the tag for</param>
/// <param name="context">PortPulseNode to visit</param>
/// <param name="lineNo">Current line number</param>
/// <param name="collectedSpans">Collection of spans found</param>
private void Visit(ITextSnapshotLine line, PortPulseNode context, int lineNo,
List <ClassificationSpan> collectedSpans)
{
if (context == null ||
lineNo < context.Span.StartLine ||
lineNo > context.Span.EndLine)
{
return;
}
Visit(line, context.ValueExpr, lineNo, collectedSpans);
Visit(line, context.Pulse1Expr, lineNo, collectedSpans);
Visit(line, context.Pulse2Expr, lineNo, collectedSpans);
}
/// <summary>
/// Visit a parse tree produced by <see cref="Z80TestParser.portPulse"/>.
/// <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 override object VisitPortPulse(Z80TestParser.PortPulseContext context)
{
if (IsInvalidContext(context))
{
return(null);
}
var node = new PortPulseNode(context);
if (context.expr().Length > 0)
{
node.ValueExpr = (ExpressionNode)VisitExpr(context.expr()[0]);
}
if (context.expr().Length > 1)
{
node.Pulse1Expr = (ExpressionNode)VisitExpr(context.expr()[1]);
}
if (context.expr().Length > 2)
{
node.Pulse2Expr = (ExpressionNode)VisitExpr(context.expr()[2]);
node.IsInterval = context.GetChild(4).GetText() == "..";
}
return(node);
}