static void Main(string[] args)
{
bool show_tree = false;
bool show_tokens = false;
bool old = false;
bool two_byte = false;
string file_name = null;
string input = null;
System.Text.Encoding encoding = null;
for (int i = 0; i < args.Length; ++i)
{
if (args[i].Equals("-tokens"))
{
show_tokens = true;
continue;
}
else if (args[i].Equals("-two-byte"))
{
two_byte = true;
continue;
}
else if (args[i].Equals("-old"))
{
old = true;
continue;
}
else if (args[i].Equals("-tree"))
{
show_tree = true;
continue;
}
else if (args[i].Equals("-input"))
{
input = args[++i];
}
else if (args[i].Equals("-file"))
{
file_name = args[++i];
}
else if (args[i].Equals("-encoding"))
{
++i;
encoding = Encoding.GetEncoding(
args[i],
new EncoderReplacementFallback("(unknown)"),
new DecoderReplacementFallback("(error)"));
if (encoding == null)
{
throw new Exception(@"Unknown encoding. Must be an Internet Assigned Numbers Authority (IANA) code page name. https://www.iana.org/assignments/character-sets/character-sets.xhtml");
}
}
}
ICharStream str = null;
if (input == null && file_name == null)
{
str = CharStreams.fromStream(System.Console.OpenStandardInput());
}
else if (input != null)
{
str = CharStreams.fromString(input);
}
else if (file_name != null)
{
if (two_byte)
{
str = new TwoByteCharStream(file_name);
}
else if (old)
{
FileStream fs = new FileStream(file_name, FileMode.Open);
str = new Antlr4.Runtime.AntlrInputStream(fs);
}
else if (encoding == null)
{
str = CharStreams.fromPath(file_name);
}
else
{
str = CharStreams.fromPath(file_name, encoding);
}
}
var lexer = new JavaScriptLexer(str);
if (show_tokens)
{
StringBuilder new_s = new StringBuilder();
for (int i = 0; ; ++i)
{
var ro_token = lexer.NextToken();
var token = (CommonToken)ro_token;
token.TokenIndex = i;
new_s.AppendLine(token.ToString());
if (token.Type == Antlr4.Runtime.TokenConstants.EOF)
{
break;
}
}
System.Console.Error.WriteLine(new_s.ToString());
lexer.Reset();
}
var tokens = new CommonTokenStream(lexer);
var parser = new JavaScriptParser(tokens);
var listener_lexer = new ErrorListener <int>();
var listener_parser = new ErrorListener <IToken>();
lexer.AddErrorListener(listener_lexer);
parser.AddErrorListener(listener_parser);
DateTime before = DateTime.Now;
var tree = parser.program();
DateTime after = DateTime.Now;
System.Console.Error.WriteLine("Time: " + (after - before));
if (listener_lexer.had_error || listener_parser.had_error)
{
System.Console.Error.WriteLine("Parse failed.");
}
else
{
System.Console.Error.WriteLine("Parse succeeded.");
}
if (show_tree)
{
System.Console.Error.WriteLine(tree.ToStringTree(parser));
}
System.Environment.Exit(listener_lexer.had_error || listener_parser.had_error ? 1 : 0);
}