public override object VisitCompileUnit([NotNull] CMinusParser.CompileUnitContext context)
{
this.Visit(context.program());
if (!(this.symbolTable.HasSymbol("main") && this.symbolTable.GetSymbol("main").construct == SymbolTable.Symbol.Construct.FUNCTION))
{
this.EmitSemanticErrorMessage("No main function found", context);
}
return(null);
}
static int Main(string[] args)
{
Console.Write("Input path: ");
string path = Console.ReadLine().Trim('\"');
Console.Write("Output path: ");
string outputPath = Console.ReadLine().Trim('\"');
string input = File.ReadAllText(path);
string code = PrependCommonFunctions(input);
Console.WriteLine(code);
AntlrInputStream inputStream = new AntlrInputStream(new StringReader(code));
CMinusLexer lexer = new CMinusLexer(inputStream);
CommonTokenStream tokens = new CommonTokenStream(lexer);
CMinusParser parser = new CMinusParser(tokens);
SyntaxErrorListener syntaxErrorListener = new SyntaxErrorListener();
parser.AddErrorListener(syntaxErrorListener);
CMinusParser.CompileUnitContext tree = parser.compileUnit();
if (lexer.errors > 0)
{
Console.WriteLine("Lexical analysis failure.");
}
if (syntaxErrorListener.errors > 0)
{
Console.WriteLine("Syntax analysis failure.");
}
if (lexer.errors > 0 || syntaxErrorListener.errors > 0)
{
Console.ReadKey();
return(-1);
}
GlobalAnalysisVisitor globalVisitor = new GlobalAnalysisVisitor();
globalVisitor.Visit(tree);
if (globalVisitor.errors > 0)
{
Console.Error.WriteLine("Global semantic analysis failure.");
Console.ReadKey();
return(-1);
}
Console.WriteLine(globalVisitor.symbolTable.ToString());
InternalAnalysisVisitor internalVisitor = new InternalAnalysisVisitor(globalVisitor.symbolTable);
internalVisitor.Visit(tree);
if (internalVisitor.errors > 0)
{
Console.Error.WriteLine("Internal semantic analysis failure.");
Console.ReadKey();
return(-1);
}
Console.WriteLine("\n----------\n");
// ILVisitor ilVisitor = new ILVisitor(globalVisitor.symbolTable);
// ilVisitor.Visit(tree);
CrimsonForthVisitor CFVisitor = new CrimsonForthVisitor();
CFVisitor.Visit(tree);
string assemblyCode = CFVisitor.writer.Finalize();
Console.WriteLine(assemblyCode);
Console.WriteLine("\n----------\n");
File.WriteAllText(outputPath, assemblyCode.Replace("\r", ""));
Console.ReadKey();
return(0);
}
