/// <summary>
/// Sets up the compiler instance with all needed components.
/// </summary>
/// <param name="loggerFactory">A logger factory to use to instantiate loggers.</param>
public CobaltCompiler(ILoggerFactory loggerFactory, ITargetCodeGenerator compilerBackend)
{
Logger = loggerFactory.CreateLogger <CobaltCompiler>();
Lexer = new CobaltLexer(loggerFactory);
Parser = new CobaltParser(loggerFactory);
Optimizer = new CobaltOptimizer(loggerFactory);
Analyzer = new CobaltSemanticAnalyzer(loggerFactory);
TargetCodeGenerator = compilerBackend;
}
/// <summary>
/// The compiler entry point.
/// </summary>
/// <param name="args">Command line arguments.</param>
public static void Main(string[] args)
{
// Set up configuration from command line arguments
IConfiguration configuration = new ConfigurationBuilder().AddCommandLine(args, new Dictionary <string, string>()
{
{ "-i", ARG_INPUT_FILE },
{ "-o", ARG_OUTPUT_DIR },
{ "-t", ARG_TARGET_PLATFORM }
}).Build();
// Check for verbose mode
bool verbose = args.Contains("-v");
// Set up logging providers
ILoggerFactory loggerFactory = LoggingBootstrapper.CreateLoggerFactory(verbose);
// Logger for local logging
ILogger logger = loggerFactory.CreateLogger <Program>();
// Display help if requested
if (args.Contains("-h"))
{
PrintHelpAndExit(logger);
}
// Parse command line arguments
string inputFile = configuration.GetValue <string>(ARG_INPUT_FILE);
string outputDir = configuration.GetValue <string>(ARG_OUTPUT_DIR);
string targetPlatform = configuration.GetValue <string>(ARG_TARGET_PLATFORM);
// Validate required parameters
if (string.IsNullOrWhiteSpace(inputFile) ||
string.IsNullOrWhiteSpace(outputDir) ||
string.IsNullOrWhiteSpace(targetPlatform))
{
logger.LogCritical("One or more required parameter is missing!");
PrintHelpAndExit(logger);
}
// Display information in verbose mode
logger.LogDebug("Compiler parameters:");
logger.LogDebug($" - Input file: {inputFile}");
logger.LogDebug($" - Output directory: {outputDir}");
logger.LogDebug($" - Target platform: {targetPlatform}");
// Set up compiler backend
ITargetCodeGenerator backend = null;
switch (targetPlatform.ToLowerInvariant())
{
case "node":
case "Node":
backend = new NodeJavaScriptCodeGenerator();
break;
default:
logger.LogError($"Unknown target platform `{targetPlatform}`.");
break;
}
if (backend != null)
{
try
{
// Set up compiler
CobaltCompiler compiler = new CobaltCompiler(loggerFactory, backend);
// Read source code from input file
string sourceCode = File.ReadAllText(inputFile);
// Compile!
logger.LogInformation("Compiling program...");
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
TargetProgram targetProgram = compiler.Compile(sourceCode);
stopwatch.Stop();
logger.LogInformation($"Successfully compiled program in {stopwatch.ElapsedMilliseconds} ms.");
// Write output files
if (!Directory.Exists(outputDir))
{
Directory.CreateDirectory(outputDir);
}
logger.LogInformation($"Writing files to {outputDir}...");
foreach (ITargetFile file in targetProgram.GetFiles())
{
string filePath = Path.Combine(outputDir, file.Name);
file.Writer.WriteTargetFile(file, filePath);
logger.LogDebug($" - Wrote file {file.Name}");
}
logger.LogInformation("All files have been written to disk.");
}
catch (Exception exception)
{
if (verbose)
{
logger.LogError($"Compilation failed with {exception.Message}{Environment.NewLine}{exception.StackTrace}");
}
else
{
logger.LogError("Compilation failed.", exception);
}
logger.LogInformation("Press any key to terminate...");
Console.ReadKey();
}
}
}