public PrgState execute(PrgState state)
{
MyIStack <IStmt> stack = state.getStk();
MyIDictionary <string, int> symTable = state.getSymTable();
int val = exp.Eval(symTable);
if (symTable.isDefined(id))
{
symTable.update(id, val);
}
else
{
symTable.put(id, val);
}
return(null);
}
public PrgState execute(PrgState state)
{
MyIStack <IStmt> stk = state.getExeStack();
MyIDictionary <String, int> symTbl = state.getSymTable();
IFileTable <int, FileTuple> fileTbl = state.getFileTable();
int value_exp = this.exp_file_id.eval(symTbl);
FileTuple ft = fileTbl.getValue(value_exp);
if (!symTbl.isDefined(ft.getFileName()))
{
//throw new MyStmtExecException("The key is not defined in the file table");
}
StreamReader streamReader = ft.getStreamReader();
int val = -1;
try
{
String line = streamReader.ReadLine();
if (line == null)
{
val = 0;
}
else
{
try
{
val = int.Parse(line);
}
catch (Exception ex) { Console.WriteLine(ex.Message); }
}
symTbl.put(this.var_name, val);
}
catch (IOException ex) { throw new Exception(ex.Message); }
return(state);
}
public PrgState execute(PrgState state)
{
MyIStack <IStmt> stk = state.getExeStack();
IFileTable <int, FileTuple> filetable = state.getFileTable();
MyIDictionary <String, int> symTbl = state.getSymTable();
try
{
FileStream reader = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
StreamReader bufferedStream = new StreamReader(reader);
int id = IdGenerator.generateId();
FileTuple tuple = new FileTuple(this.filename, bufferedStream);
filetable.put(id, tuple);
symTbl.put(this.var_file_id, id);
}
catch (Exception ex) { throw new Exception(ex.Message); }
return(state);
}
public PrgState execute(PrgState state)
{
MyIStack <IStmt> stk = state.getExeStack();
MyIDictionary <String, int> symTbl = state.getSymTable();
try
{
int val = exp.eval(symTbl);
//if (!symTbl.isDefined(this.id))
//throw new MyStmtExecException("The variable is not assigned");
//int address = symTbl.get(this.id);
//heap.put(address, val);
symTbl.put(this.id, val); //we assign the new values
}
catch (Exception ex)
{
Console.WriteLine("ASSIGN ERROR");
}
return(state);
}
public void addCommand(Command c)
{
commands.put(c.getKey(), c);
}