public ScriptExtent(SourceSpan origSpan, int startOffset, int endOffset)
{
if (startOffset == 0 && endOffset == 0)
{
_span = origSpan;
return;
}
// create a new span with offsets
var location = origSpan.Location;
// we don't adjust line and column for artifical offsets. This is hopefully okay.
var newLocation = new SourceLocation(location.Position + startOffset, location.Line, location.Column);
// don't forget to subtract the start offset here
_span = new SourceSpan(newLocation, origSpan.Length + endOffset - startOffset);
}
protected TextSpan CreateSpanFor(SourceSpan span, Source source)
{
return CreateSpanFor(span.Location, span.EndPosition, source);
}
public void SetSpan(SourceSpan sourceSpan)
{
Span = sourceSpan;
}
/// <summary>
/// Fix the label to the given label.
/// </summary>
public void Fix(Label fixTo, SourceSpan span)
{
this.ForwardsTo = fixTo;
this.Span = span;
}
/// <summary>
/// Fix the label to the given value.
/// </summary>
public void Fix(ushort value, SourceSpan span)
{
this.Value = value;
this.Span = span;
this.Fixed = true;
}
public static CodeGen At(this CodeGen cg, SourceSpan span)
{
return cg.At(span.Location.Line + 1, span.Location.Column, span.Location.Line + 1, span.Location.Column + span.Length);
}