static void Main(string[] args)
{
Console.Title = "MyCompiler - Lex";
var argManager = new ArgManager(args);
bool debug = argManager.Contains("-d");
//debug = true;
string sourceFilename = argManager.First();
if (string.IsNullOrEmpty(sourceFilename))
sourceFilename = argManager.Find("-s");
//if (debug && string.IsNullOrEmpty(sourceFilename)) // IF DEBUG
// sourceFilename = "main.c";
string outputFilename = argManager.Find("-o");
if (string.IsNullOrEmpty(outputFilename))
outputFilename = "lexoutput.txt";
string tokenDefinitionFilename = argManager.Find("-t");
if (string.IsNullOrEmpty(tokenDefinitionFilename))
tokenDefinitionFilename = "lextoken.txt";
// Error
if (!File.Exists(sourceFilename))
{
Console.WriteLine(String.Format("Error, source file: \"{0}\" not found!", sourceFilename));
return;
}
if (!File.Exists(tokenDefinitionFilename))
{
Console.WriteLine(String.Format("Error, token definition file: \"{0}\" not found!", tokenDefinitionFilename));
return;
}
var scanner = new Scanner();
// Load token definitions
foreach (var tokenDefinition in (new TokenDefinitionParser(tokenDefinitionFilename)).Parse())
scanner.AddDefinition(tokenDefinition);
var tokens = scanner.Tokenize(File.ReadAllText(sourceFilename));
if (tokens == null)
return;
StreamWriter wr = new StreamWriter(outputFilename);
foreach (var token in tokens)
{
Console.WriteLine(token);
wr.WriteLine(token);
}
wr.Close();
wr.Dispose();
if (debug)
Console.ReadKey();
}
public BNFParser(string filename)
{
if (File.Exists(filename))
Filename = filename;
scanner = new Scanner();
scanner.AddDefinition(new TokenDefinition("TOKEN_EQUALS", new Regex(@"\:=")));
scanner.AddDefinition(new TokenDefinition("TOKEN_OR", new Regex(@"\|")));
scanner.AddDefinition(new TokenDefinition("TOKEN_SEMICOLON", new Regex(@"\;")));
scanner.AddDefinition(new TokenDefinition("TOKEN_SYMBOL", new Regex(@"[a-zA-Z_][a-zA-Z0-9_]+")));
scanner.AddDefinition(new TokenDefinition("TOKEN_EOF", new Regex(@"\(end\)")));
scanner.AddDefinition(new TokenDefinition("TOKEN_EMPTY", new Regex(@"\(empty\)")));
scanner.AddDefinition(new TokenDefinition("TOKEN_WHITESPACE", new Regex(@"\s"), true));
}