public static void ReplMode()
{
var environment = new ReplEnvironment(new OperationCodeFactory(), new ValueFactory());
var interpreter = new ReplInterpreter();
environment.AddClassesDerivedFromClassInAssembly(typeof(Eilang));
environment.AddExportedFunctionsFromAssembly(typeof(Eilang));
environment.AddExportedModulesFromAssembly(typeof(Eilang));
while (true)
{
Console.Write(">");
var code = Console.ReadLine() ?? "";
if (string.IsNullOrWhiteSpace(code))
{
continue;
}
try
{
code = Simplify(code);
var reader = new ScriptReader(code, "repl");
var lexer = new ScriptLexer(reader, new CommonLexer(reader));
var parser = new Parser(lexer);
var ast = parser.Parse();
Compiler.Compile(environment, ast);
var eval = interpreter.Interpret(environment);
if (eval.Type != EilangType.Void)
{
ExportedFunctions.PrintLine(new State(environment, null, null, null, null, new ValueFactory()), Arguments.Create(eval, "eval"));
}
}
catch (ExitException e)
{
if (!string.IsNullOrWhiteSpace(e.Message))
{
var oldColor = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(e.Message);
Console.ForegroundColor = oldColor;
}
Environment.Exit(e.ExitCode);
}
catch (ErrorMessageException e)
{
Program.LogLine(ConsoleColor.Red, e.Message);
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}
public void AddExportedFunctionsFromClass(Type type)
{
var functions = type.GetMethods()
.Where(m => m.GetCustomAttributes <ExportFunctionAttribute>().Any());
foreach (var func in functions)
{
var names = func.GetCustomAttributes <ExportFunctionAttribute>();
foreach (var name in names)
{
ExportedFunctions.Add(name.FunctionName,
(ExportedFunction)func.CreateDelegate(typeof(ExportedFunction)));
}
}
}
public void AddExportedModule(Type type)
{
var moduleName = type.GetCustomAttribute <ExportModuleAttribute>().ModuleName;
var functions = type.GetMethods()
.Where(m => m.CustomAttributes.Any(a =>
ReferenceEquals(a.AttributeType, typeof(ExportFunctionAttribute))));
foreach (var func in functions)
{
var names = func.GetCustomAttributes <ExportFunctionAttribute>();
foreach (var name in names)
{
var nameWithModule = $"{moduleName}::{name.FunctionName}";
ExportedFunctions.Add(nameWithModule,
(ExportedFunction)func.CreateDelegate(typeof(ExportedFunction)));
}
}
}