public static T SearchScope <T>(this Scope scope, bool preferDirectParent = false) where T : Scope
{
if (scope == null)
{
throw new ArgumentNullException("scope");
}
T sought = scope as T;
if (sought != null)
{
return(sought);
}
BindScope bindScope = scope as BindScope;
if (bindScope != null)
{
sought = SearchScope <T>(preferDirectParent ? bindScope.Parent : bindScope.GrandChild);
if (sought != null)
{
return(sought);
}
return(SearchScope <T>(preferDirectParent ? bindScope.GrandChild : bindScope.Parent));
}
ChildScope childScope = scope as ChildScope;
if (childScope != null)
{
return(SearchScope <T>(childScope.Parent));
}
return(null);
}
/// <summary>
/// Ported from T * search_scope(scope_t * ptr, bool prefer_direct_parents = false)
/// </summary>
public static T SearchScope <T>(this Scope scope, bool preferDirectParent = false) where T : Scope
{
if (scope == null)
{
throw new ArgumentNullException("scope");
}
Logger.Current.Debug("scope.search", () => String.Format("Searching scope {0}", scope.Description));
T sought = scope as T;
if (sought != null)
{
return(sought);
}
BindScope bindScope = scope as BindScope;
if (bindScope != null)
{
sought = SearchScope <T>(preferDirectParent ? bindScope.Parent : bindScope.GrandChild);
if (sought != null)
{
return(sought);
}
return(SearchScope <T>(preferDirectParent ? bindScope.GrandChild : bindScope.Parent));
}
ChildScope childScope = scope as ChildScope;
if (childScope != null)
{
return(SearchScope <T>(childScope.Parent));
}
return(null);
}
public void ExecuteCommand(IEnumerable <string> args, bool atRepl)
{
Session.FlushOnNextDataFile = true;
// Process the command verb, arguments and options
if (atRepl)
{
args = ReadCommandArguments(Report, args);
if (!args.Any())
{
return;
}
}
string verb = args.First();
args = args.Skip(1); // DM - skip the first item that is equal to verb = *arg++;
// Look for a precommand first, which is defined as any defined function
// whose name starts with "ledger_precmd_". The difference between a
// precommand and a regular command is that precommands ignore the journal
// data file completely, nor is the user's init file read.
//
// Here are some examples of pre-commands:
//
// parse STRING ; show how a value expression is parsed
// eval STRING ; simply evaluate a value expression
// format STRING ; show how a format string is parsed
//
// If such a command is found, create the output stream for the result and
// then invoke the command.
ExprFunc command;
bool isPrecommand = false;
BindScope boundScope = new BindScope(this, Report);
command = LookForPrecommand(boundScope, verb);
if (!command.IsNullOrEmpty())
{
isPrecommand = true;
}
// If it is not a pre-command, then parse the user's ledger data at this
// time if not done already (i.e., if not at a REPL). Then patch up the
// report options based on the command verb.
if (!isPrecommand)
{
if (!atRepl)
{
Session.ReadJournalFiles();
}
Report.NormalizeOptions(verb);
command = LookForCommand(boundScope, verb);
if (command.IsNullOrEmpty())
{
throw new LogicError(String.Format(LogicError.ErrorMessageUnrecognizedCommand, verb));
}
}
// Create the output stream (it might be a file, the console or a PAGER
// subprocess) and invoke the report command. The output stream is closed
// by the caller of this function.
Report.OutputStream = FileSystem.OutputStreamInitialize(
Report.OutputHandler.Handled ? Report.OutputHandler.Str() : String.Empty,
Report.PagerHandler.Handled ? Report.PagerHandler.Str() : String.Empty);
// Now that the output stream is initialized, report the options that will
// participate in this report, if the user specified --options
if (OptionsHandler.Handled)
{
Report.OutputStream.Write(ReportOptions(Report));
}
// Create an argument scope containing the report command's arguments, and
// then invoke the command. The bound scope causes lookups to happen
// first in the global scope, and then in the report scope.
CallScope commandArgs = new CallScope(boundScope);
foreach (string arg in args)
{
commandArgs.PushBack(Value.Get(arg));
}
var info = Logger.Current.InfoContext(TimerName.Command)?.Message("Finished executing command").Start(); // INFO_START
command(commandArgs);
info?.Finish(); // INFO_FINISH
}
