//A recursive function for handling the creation of the macro commands
public static Command CreateMacro(MacroCommand macroCommand, StreamReader sr)
{
var line = sr.ReadLine();
//base case, macro section is complete
if (line.ElementAt(0) == 'E')
{
return(macroCommand);
}
//nested macro case
else if (line.ElementAt(0) == 'B')
{
macroCommand.commands.Add(CreateMacro(new MacroCommand(), sr));
}
//add line to macro and run function again
else
{
ArgStruct args = Parser.ParseLine(line);
macroCommand.commands.Add(Factory.MakeCommand(args));
CreateMacro(macroCommand, sr);
}
return(macroCommand);
}
/// <summary>
/// Parse the entire file, send off to subroutines as required to create Commands and save them to the invoker
/// </summary>
/// <param name="path"></param>
public static void ParseFile(string path)
{
using (StreamReader sr = new StreamReader(path)) //Read the file in, create Commands and add to list
{
while (!sr.EndOfStream)
{
Command newCommand;
var line = sr.ReadLine();
if (line.ElementAt(0) != 'B')
{
ArgStruct args = ParseLine(line);
newCommand = Factory.MakeCommand(args);
}
else
{
newCommand = Factory.CreateMacro(new MacroCommand(), sr);
}
Invoker.commands.Add(newCommand);
}
}
}
/// <summary>
/// Creates a list of Commands from the temp file
/// </summary>
/// <param name="filePath"></param>
private void CreateCommandList(string filePath)
{
commands.Clear();
commands.Add(new MacroCommand());
using (StreamReader sr = new StreamReader(filePath))
{
while (!sr.EndOfStream)
{
Command newCommand;
var line = sr.ReadLine();
if (line.ElementAt(0) != 'B')
{
ArgStruct args = ParseLine(line);
newCommand = FunctionsDictionary[args._command](args);
}
else
{
newCommand = CreateMacro(new MacroCommand(), sr);
}
commands.Add(newCommand);
}
}
}
static Command MakeUpdate(ArgStruct args)
{
Command command = new UpdateCommand(args._database, args._key, args._value);
return(command);
}
static Command MakeAdd(ArgStruct args)
{
Command command = new AddCommand(args._database, args._key, args._value);
return(command);
}
//The following methods are for creating the Command Objects
public static Command MakeCommand(ArgStruct args)
{
return(FunctionsDictionary[args._command](args));
}
static Command MakeUpdate(ArgStruct args)
{
return(new UpdateCommand(args._database, args._key, args._value));
}
static Command MakeRemove(ArgStruct args)
{
return(new RemoveCommand(args._database, args._key, args._value));
}
static Command MakeAdd(ArgStruct args)
{
return(new AddCommand(args._database, args._key, args._value));
}