private string HandleTimesDirective(IReadOnlyList <string> aSegments,
ref int aArgIndex,
ref DirectiveCodes aDirCode)
{
// Skip the TIMES directive term as it will
// trigger an early loop break below.
++aArgIndex;
object?dirCode = null;
string timesExprStr = string.Empty;
var hasValidDir = false;
var len = aSegments.Count;
for (; aArgIndex < len; aArgIndex++)
{
if (!Enum.TryParse(typeof(DirectiveCodes),
aSegments[aArgIndex].ToUpper(),
out dirCode))
{
// We have not found a valid directive.
// Add this argument to the expression string.
timesExprStr += aSegments[aArgIndex];
continue;
}
// Ensure that this directive can use the times
// prefix.
hasValidDir = dirCode switch
{
DirectiveCodes.DB => true,
_ => false
};
break;
}
// We did not find a valid directive after the times
// prefix. This syntax is invalid.
// We have to null check dirCode here as the compiler
// doesn't understand that it cannot ever be null here.
if (!hasValidDir || dirCode is null)
{
AsmParser.Assert(true,
AsmParser.ExIDs.InvalidDirectiveType);
return(string.Empty);
}
// Update the directive code.
aDirCode = (DirectiveCodes)dirCode;
return(timesExprStr);
}
public CompilerDir(DirectiveCodes aDirCode,
string aDirLabel,
byte[]?aByteData = null,
string?aStringData = null,
string?aTimesExprString = null,
CompilerDir?aSubDir = null)
{
DirCode = aDirCode;
DirLabel = aDirLabel;
ByteData = aByteData ?? new byte[0];
StringData = aStringData ?? string.Empty;
TimesExprString = aTimesExprString ?? string.Empty;
SubDirective = aSubDir;
}