public PState execute(PState state)
{
IMap <int, FileTuple> files = state.getFiles();
IMap <string, int> table = state.getTable();
int counter = state.getFilesCounter();
StreamReader filedesc = null;
try {
filedesc = new StreamReader("E:\\fac\\ToyCSharp\\ToyCSharp\\bin\\Debug\\" + filename);
}
catch (FileNotFoundException e) {
System.Console.WriteLine(e.Message);
throw new MyException("FILE_ERR: can't open file");
}
FileTuple f = new FileTuple(filename, filedesc);
if (files.hasValue(f))
{
throw new MyException("FILE_ERR: file already opened");
}
files.add(counter, f);
if (table.hasKey(var))
{
table.update(var, counter);
}
else
{
table.add(var, counter);
}
return(null);
}
public PState execute(PState state)
{
IMap <string, int> table = state.getTable();
IList <int> list = state.getOut();
list.add(exp.eval(table));
return(state);
}
public PState execute(PState state)
{
IStack <IStatement> stack = state.getStack();
IMap <string, int> table = state.getTable();
int val = exp.eval(table);
if (val != 0)
{
stack.push(s1);
}
else
{
stack.push(s2);
}
return(state);
}
public PState execute(PState state)
{
IStack <IStatement> stack = state.getStack();
IMap <string, int> table = state.getTable();
int val = exp.eval(table);
if (table.hasKey(id))
{
table.update(id, val);
}
else
{
table.add(id, val);
}
return(state);
}
public PState execute(PState state)
{
IMap <int, FileTuple> files = state.getFiles();
IMap <string, int> table = state.getTable();
int res = fid.eval(table);
if (!files.hasKey(res))
{
throw new MyException("FILE_ERR: file not opened");
}
FileTuple f = files.lookup(res);
f.filedesc.Close();
files.remove(res);
return(null);
}
public PState execute(PState state)
{
IMap <int, FileTuple> files = state.getFiles();
IMap <string, int> table = state.getTable();
int res = fid.eval(table);
int value;
if (!files.hasKey(res))
{
throw new MyException("FILE_ERR: file doesn't exist");
}
FileTuple f = files.lookup(res);
StreamReader buffer = f.filedesc;
string line = buffer.ReadLine();
if (line == null)
{
value = 0;
}
else
{
value = Int32.Parse(line);
}
if (table.hasKey(var))
{
table.update(var, value);
}
else
{
table.add(var, value);
}
return(null);
}