public ProgramState Execute(ProgramState programState)
{
MyIDictionary <string, int> symbolTable = programState.SymbolTable;
int value = expression.Evaluate(symbolTable);
if (symbolTable.ContainsKey(id))
{
symbolTable.Update(id, value);
}
else
{
symbolTable.Add(id, value);
}
return(programState);
}
public ProgramState Execute(ProgramState programState)
{
MyIDictionary <string, int> symbolTable = programState.SymbolTable;
int fileDescriptor = expFileId.Evaluate(symbolTable);
if (!programState.FileTable.TryGetValue(fileDescriptor, out Tuple <string, TextReader> value))
{
throw new StatementException("Invalid file id provided!");
}
TextReader reader = value.Item2;
string line;
try
{
line = reader.ReadLine();
}catch (Exception)
{
throw new StatementException("Error while reading from file!");
}
int intValue = 0;
if (line != null && !int.TryParse(line, out intValue))
{
throw new StatementException("File contains non-numeric values!");
}
if (symbolTable.ContainsKey(varName))
{
symbolTable.Update(varName, intValue);
}
else
{
symbolTable.Add(varName, intValue);
}
return(programState);
}
