Ejemplo n.º 1
0
        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);
        }
Ejemplo n.º 2
0
        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);
        }
Ejemplo n.º 3
0
        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);
        }
Ejemplo n.º 4
0
        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);
        }
Ejemplo n.º 5
0
 public void addCommand(Command c)
 {
     commands.put(c.getKey(), c);
 }