public void Run()
{
string line;
int lineNumber = 0;
while ((line = _sourceStream.ReadLine()) != null)
{
lineNumber++;
if (line.Contains('\t'))
{
throw new LexerException(lineNumber, "AHL file cannot contain tabs");
}
line = StripComments(line);
int indent = 0;
while (indent < line.Length && line[indent] == ' ')
{
indent++;
}
// skip empty lines
if (indent == line.Length)
{
continue;
}
line = line.Substring(indent);
var match = LineRegex.Match(line);
if (!match.Success)
{
throw new LexerException(lineNumber, $"Line doesn't match AHL syntax:\n{line}");
}
string keyword = match.Groups["keyword"].Success ? match.Groups["keyword"].Captures[0].Value : null;
string key = match.Groups["key"].Success ? Unquote(match.Groups["key"].Captures[0].Value) : null;
var attributes = new List <AhlAttribute>();
for (int i = 0; i < match.Groups["attrName"].Captures.Count; i++)
{
var attrName = match.Groups["attrName"].Captures[i].Value;
var attrValue = Unquote(match.Groups["attrValue"].Captures[i].Value);
attributes.Add(new AhlAttribute(attrName, attrValue));
}
_parsingContext.PushLine(lineNumber, indent, keyword, key, attributes);
}
_parsingContext.PushEof();
}
