private static int Main(string[] args)
{
Stream inputFile = null;
Grammar grammar = null;
ErrorHandler handler = new ErrorHandler();
string inputFileInfo = null; // Filename plus revision time.
Lexers.Scanner scanner = null;
Parser.Parser parser = null;
Assembly assm = Assembly.GetExecutingAssembly();
object info = Attribute.GetCustomAttribute(assm, typeof(AssemblyFileVersionAttribute));
versionInfo = ((AssemblyFileVersionAttribute)info).Version;
try {
string filename = ProcessOptions(args);
if (filename == null)
{
return(MC_OK);
}
try {
inputFile = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
inputFileInfo = filename + " - " + File.GetLastWriteTime(filename).ToString();
}
catch (IOException x) {
string message;
inputFile = null;
if (x is FileNotFoundException)
{
message = String.Format(CultureInfo.InvariantCulture,
"Source file <{0}> not found{1}",
filename, Environment.NewLine);
}
else
{
message = String.Format(CultureInfo.InvariantCulture,
"Source file <{0}> could not be opened{1}",
filename, Environment.NewLine);
}
handler.AddError(4, message, null); // aast.AtStart;
return(MC_FILEERROR);
}
scanner = new Lexers.Scanner(inputFile);
scanner.SetHandler(handler);
parser = new Parser.Parser(filename, inputFileInfo, scanner, handler);
//
// If the parse is successful, then process the grammar.
// Otherwise just report the errors that have been listed.
//
if (parser.Parse())
{
grammar = parser.Grammar;
if (Terminal.Max > 255)
{
handler.ListError(null, 103, CharacterUtilities.Map(Terminal.Max), '\'');
}
LALRGenerator generator = new LALRGenerator(grammar);
List <AutomatonState> states = generator.BuildStates();
generator.ComputeLookAhead();
generator.BuildParseTable();
if (!grammar.CheckGrammar(handler))
{
throw new ArgumentException("Non-terminating grammar");
}
//
// If the grammar has non-terminating non-terms we cannot
// create a diagnostic report as the grammar is incomplete.
//
if (!handler.Errors)
{
CodeGenerator emitter = new CodeGenerator(grammar);
emitter.Generate(states);
}
bool DoDiagnose = Diagnose && !grammar.HasNonTerminatingNonTerms;
if (Report || DoDiagnose)
{
string htmlName = System.IO.Path.ChangeExtension(filename, ".report.html");
try {
System.IO.FileStream htmlFile = new System.IO.FileStream(htmlName, System.IO.FileMode.Create);
System.IO.StreamWriter htmlWriter = new System.IO.StreamWriter(htmlFile);
Grammar.HtmlHeader(htmlWriter, filename);
if (Report && DoDiagnose)
{
grammar.GenerateCompoundReport(htmlWriter, inputFileInfo, states);
}
else if (Report)
{
grammar.GenerateReport(htmlWriter, inputFileInfo, states);
}
Grammar.HtmlTrailer(htmlWriter);
if (htmlFile != null)
{
htmlWriter.Flush();
htmlFile.Close();
}
}
catch (System.IO.IOException) {
Console.Error.WriteLine("Cannot create html output file {0}", htmlName);
}
}
}
}
catch (System.Exception e) {
if (e is TooManyErrorsException)
{
return(MC_TOOMANYERRORS);
}
Console.Error.WriteLine("Unexpected Error {0}", e.Message);
if (NoThrowOnError)
{
// report the error, do not let it go into the void
Console.Error.WriteLine(e);
return(MC_EXCEPTION);
}
}
finally {
if (handler.Errors || handler.Warnings)
{
handler.DumpAll((scanner == null ? null : scanner.Buffer), Console.Error);
}
if ((Listing || handler.Errors || handler.Warnings) && parser != null)
{
string listName = parser.ListfileName;
StreamWriter listStream = ListingFile(listName);
if (listStream != null)
{
handler.MakeListing(scanner.Buffer, listStream, parser.SourceFileInfo, versionInfo);
}
}
}
return(MC_OK);
}