public static (Instructions Instructions, CodeContexts Contexts) ParseFile(string file)
{
var lexer = new FlyLexer(new AntlrFileStream(file));
var parser = new FlyParser(new CommonTokenStream(lexer));
var listener = new Listener();
listener.EnterProgram(parser.program());
return(listener.Code.Instructions, listener.Code.Contexts);
}
public void Run()
{
while (true)
{
Console.Write(">>> ");
var input = ReadInput();
var lexer = new FlyLexer(new AntlrInputStream(input));
try
{
_prev = (Listener)listener.Clone();
var parser = new FlyParser(new CommonTokenStream(lexer))
{
ErrorHandler = new BailErrorStrategy()
};
listener.EnterProgram(parser.program());
}
catch (Exception e)
{
listener = _prev;
Console.WriteLine(e.Message.Split('\n').First());
}
if (vm == null)
{
vm = new VirtualMachine(listener.Code.Instructions, listener.Code.Contexts, In, Out);
}
else
{
vm.Instructions = listener.Code.Instructions;
vm.DebugContexts = listener.Code.Contexts;
}
vm.constants = new StringConstants(listener.Code.Instructions.StringConstants.ToArray());
#if !DEBUG
try
{
#endif
var res = vm.EvalRun();
Console.WriteLine(res);
#if !DEBUG
}
catch (Exception e)
{
Console.WriteLine("ERROR: " + e.Message);
}
#endif
}
}
public void TestStatements()
{
var cases = new[]
{
"test = 5;",
"if true { print(0); } elif false { print(1); } else { print(2); }",
"b = box (a) { return a; }",
"a, b = 5, 4;",
};
foreach (var @case in cases)
{
var lexer = new FlyLexer(new AntlrInputStream(@case));
var parser = new FlyParser(new CommonTokenStream(lexer));
// parser.ErrorHandler= new BailErrorStrategy();
var p = parser.program();
Assert.True(p != null);
// var listener = new Listener();
// listener.EnterProgram(parser.program());
}
}