static Antlr4.Runtime.Tree.IParseTree DoParse(string input)
{
bool show_tree = false;
bool show_tokens = false;
bool old = false;
bool two_byte = false;
string file_name = null;
System.Text.Encoding encoding = null;
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 ArithmeticLexer(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 ArithmeticParser(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;
ArithmeticParser.File_Context tree = parser.file_();
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);
return(tree);
}
/// <summary>
/// Exit a parse tree produced by <see cref="ArithmeticParser.file_"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitFile_([NotNull] ArithmeticParser.File_Context context)
{
}
