public static int Main(string[] args)
{
try {
Version v = Assembly.GetExecutingAssembly().GetName().Version;
string version = v.Major + "." + v.Minor + "." + v.Build;
Console.WriteLine("While.NET Compiler v" + version);
Console.WriteLine("Copyright (C) Einar Egilsson 2009. All rights reserved.");
Console.WriteLine();
CommandLineOptions options = new CommandLineOptions(args);
if (options.Empty) {
System.Console.Error.WriteLine("ERROR: No inputs specified");
return 1;
} else if (options.Help) {
System.Console.Error.WriteLine("Usage: wc.exe [options] filename");
CommandLineOptions.Print();
return 2;
} else if (!options.ReadStdIn && !File.Exists(options.InputFilename)) {
System.Console.Error.WriteLine("ERROR: File '{0}' does not exist", options.InputFilename);
return 3;
}
Parser parser;
if (options.ReadStdIn) {
//Passing the StdIn stream directly to the scanner doesn't work well
//so we do it this way instead
string source = Console.In.ReadToEnd();
StreamWriter writer = new StreamWriter(new MemoryStream());
writer.Write(source);
writer.Flush();
writer.BaseStream.Seek(0, SeekOrigin.Begin);
parser = new Parser(new Scanner(writer.BaseStream), options);
} else {
parser = new Parser(new Scanner(new FileStream(options.InputFilename, FileMode.Open)), options);
}
parser.Parse();
if (parser.errors.count > 0) {
return 1;
}
WhileProgram.SymbolTable.Clear();
PluginLoader pluginLoader = new PluginLoader();
pluginLoader.Load(options.Plugins);
foreach (ICompilerPlugin plugin in pluginLoader.LoadedPlugins) {
Console.WriteLine("Executing the '{0}' plugin...", plugin.Name);
plugin.ProcessSyntaxTree(WhileProgram.Instance);
}
WhileProgram.Instance.Compile(options.OutputFilename);
Console.WriteLine();
Console.WriteLine("Compiled program to '{0}'", options.OutputFilename);
return 0;
} catch (Exception ex) {
Console.Error.WriteLine("ERROR: " + ex.Message);
Console.Error.WriteLine(ex.StackTrace);
return 1;
}
}
protected string Parse(string src, CommandLineOptions options)
{
StreamWriter writer = new StreamWriter(new MemoryStream());
writer.Write(src);
writer.Flush();
writer.BaseStream.Seek(0, SeekOrigin.Begin);
Parser p = new Parser(new Scanner(writer.BaseStream), options);
StringWriter result = new StringWriter();
p.errors.errorStream = result;
p.Parse();
return result.ToString();
}