private static bool EvalulateDirectly(object target, string expr, IReadOnlyDictionary <string, object> symbols = null)
{
var linqExpr = SexprParser.ParseAndBind(target, expr, symbols);
var func = Expression.Lambda <Func <bool> >(linqExpr).Compile();
return(func());
}
static void Main(string[] args)
{
// new Thread(() =>
// {
const string path = "/home/chenjinsong/RiderProjects/SchemeSharp/SchemeSharp/example.txt";
var lexer = new SexprLexer(CharStreams.fromTextReader(new StreamReader(path)));
var parser = new SexprParser(new BufferedTokenStream(lexer));
var sexpr = new SexprVisitor().VisitSexpr(parser.sexpr());
var ast = Scheme.FromSexpr(sexpr);
var globalContext = new SchemeContext()
.Define("write", new SchemeProcedure((value, context, consumer) =>
{
var(arg0, _) = ((SchemePair)value).Pair;
Console.Write(arg0);
consumer(context, Scheme.Null());
}))
.Define("call/cc", new SchemeProcedure((args, context, continuation) =>
{
var(arg0, _) = ((SchemePair)args).Pair;
var procedure = (SchemeProcedure)arg0;
var continuationProcedure = new SchemeProcedure((args, context2, cc) =>
{
var arg0 = args.Item(0);
continuation(context, arg0);
});
procedure.Invoke(Scheme.Cons(continuationProcedure, Scheme.Null()), context, continuation);
}))
.Define("+", new SchemeProcedure((args, context, continuation) =>
{
continuation(context, args.Item(0).AsNumber() + args.Item(1).AsNumber());
}))
.Define("-", new SchemeProcedure((args, context, continuation) =>
{
continuation(context, args.Item(0).AsNumber() - args.Item(1).AsNumber());
}))
.Define("*", new SchemeProcedure((args, context, continuation) =>
{
continuation(context, args.Item(0).AsNumber() * args.Item(1).AsNumber());
}));
var interpreter = new Interpreter(globalContext);
Scheme.ForEachInList(ast, statement =>
{
// interpreter.Evaluate(statement, globalContext, (context, value) =>
// {
// globalContext = context;
// Console.WriteLine(value);
// });
interpreter.EvaluateGlobal(statement, Console.WriteLine);
});
Console.WriteLine("Program exited");
// }, 1024*1024*512).Start();
}