public static void Main(String[] args)
{
bool print_tree = false;
bool perf = false;
bool print_tokens = false;
int file_index = 0;
if (args.Length == 0)
{
System.Console.WriteLine("Antlr Java parser.");
return;
}
else
{
for (int i = 0; i < args.Length; ++i)
{
if (args[i] == "-t")
{
print_tree = true;
}
else if (args[i] == "-p")
{
perf = true;
}
else if (args[i] == "-i")
{
print_tokens = true;
}
else
{
file_index = i;
}
}
}
int exceptions = 0;
var errorListener = new ErrorListener <IToken>();
IParseTree tree = null;
CommonTokenStream tokens = null;
var start = DateTime.Now;
try
{
var input = File.OpenText(args[file_index]);
var str = new AntlrInputStream(input);
JavaLexer lexer = new JavaLexer(str);
tokens = new CommonTokenStream(lexer);
var parser = new JavaParser(tokens);
parser.RemoveErrorListeners();
parser.AddErrorListener(errorListener);
tree = parser.compilationUnit();
}
catch (Exception e)
{
exceptions++;
}
System.Console.WriteLine("errors " + errorListener.num_errors + " exceptions " + exceptions);
var end = DateTime.Now;
if (perf)
{
System.Console.WriteLine(end - start);
}
if (print_tokens && tokens != null)
{
foreach (var token in tokens.GetTokens())
{
System.Console.WriteLine("Token " + token.TokenIndex + " " + token.Type + " " + Output.PerformEscapes(token.Text));
}
}
if (print_tree && tree != null)
{
System.Console.WriteLine(tree.OutputTree(tokens));
}
}
