ExpressionEvaluationResult EvalParse(
CommandEvaluationContext context,
string expr,
int outputX,
ParseResult parseResult
)
{
ExpressionEvaluationResult r = null;
var errorText = "";
string[] t;
int idx;
string serr;
switch (parseResult.ParseResultType)
{
/*
* case ParseResultType.Valid:
* var syntaxParsingResult = parseResult.SyntaxParsingResults.First();
* try
* {
* var outputData = InvokeCommand(CommandEvaluationContext, syntaxParsingResult.CommandSyntax.CommandSpecification, syntaxParsingResult.MatchingParameters);
*
* r = new ExpressionEvaluationResult(null, ParseResultType.Valid, outputData, (int)ReturnCode.OK, null);
* } catch (Exception commandInvokeError)
* {
* var commandError = commandInvokeError.InnerException ?? commandInvokeError;
* Errorln(commandError.Message);
* return new ExpressionEvaluationResult(null, parseResult.ParseResultType, null, (int)ReturnCode.Error, commandError);
* }
* break;
*/
case ParseResultType.Empty:
r = new ExpressionEvaluationResult(null, parseResult.ParseResultType, null, (int)ReturnCode.OK, null);
break;
case ParseResultType.NotValid: /* command syntax not valid */
var perComErrs = new Dictionary <string, List <CommandSyntaxParsingResult> >();
foreach (var prs in parseResult.SyntaxParsingResults)
{
if (prs.CommandSyntax != null)
{
if (perComErrs.TryGetValue(prs.CommandSyntax?.CommandSpecification?.Name, out var lst))
{
lst.Add(prs);
}
else
{
perComErrs.Add(prs.CommandSyntax.CommandSpecification.Name, new List <CommandSyntaxParsingResult> {
prs
});
}
}
}
var errs = new List <string>();
var minErrPosition = int.MaxValue;
var errPositions = new List <int>();
foreach (var kvp in perComErrs)
{
var comSyntax = kvp.Value.First().CommandSyntax;
foreach (var prs in kvp.Value)
{
foreach (var perr in prs.ParseErrors)
{
minErrPosition = Math.Min(minErrPosition, perr.Position);
errPositions.Add(perr.Position);
if (!errs.Contains(perr.Description))
{
errs.Add(perr.Description);
}
}
errorText += Br + Red + string.Join(Br + Red, errs);
}
errorText += $"{Br}{Red}for syntax: {comSyntax}{Br}";
}
errPositions.Sort();
errPositions = errPositions.Distinct().ToList();
t = new string[expr.Length + 2];
for (int i = 0; i < t.Length; i++)
{
t[i] = " ";
}
foreach (var errPos in errPositions)
{
t[GetIndex(context, errPos, expr)] = ErrorPositionMarker;
}
serr = string.Join("", t);
Error(" ".PadLeft(outputX + 1) + serr);
Error(errorText);
r = new ExpressionEvaluationResult(errorText, parseResult.ParseResultType, null, (int)ReturnCode.NotDefined, null);
break;
case ParseResultType.Ambiguous:
errorText += $"{Red}ambiguous syntaxes:{Br}";
foreach (var prs in parseResult.SyntaxParsingResults)
{
errorText += $"{Red}{prs.CommandSyntax}{Br}";
}
Error(errorText);
r = new ExpressionEvaluationResult(errorText, parseResult.ParseResultType, null, (int)ReturnCode.NotDefined, null);
break;
case ParseResultType.NotIdentified:
t = new string[expr.Length + 2];
for (int j = 0; j < t.Length; j++)
{
t[j] = " ";
}
var err = parseResult.SyntaxParsingResults.First().ParseErrors.First();
idx = err.Position;
t[idx] = ErrorPositionMarker;
errorText += Red + err.Description;
serr = string.Join("", t);
Errorln(" ".PadLeft(outputX) + serr);
Errorln(errorText);
r = new ExpressionEvaluationResult(errorText, parseResult.ParseResultType, null, (int)ReturnCode.NotDefined, null);
break;
case ParseResultType.SyntaxError:
t = new string[expr.Length + 2];
for (int j = 0; j < t.Length; j++)
{
t[j] = " ";
}
var err2 = parseResult.SyntaxParsingResults.First().ParseErrors.First();
idx = err2.Index;
t[idx] = ErrorPositionMarker;
errorText += Red + err2.Description;
serr = string.Join("", t);
Errorln(" ".PadLeft(outputX) + serr);
Errorln(errorText);
r = new ExpressionEvaluationResult(errorText, parseResult.ParseResultType, null, (int)ReturnCode.NotDefined, null);
break;
}
return(r);
}
int RegisterCommandsClass(CommandEvaluationContext context, Type type, bool registerAsModule)
{
if (type.GetInterface(typeof(ICommandsDeclaringType).FullName) == null)
{
throw new Exception($"the type '{type.FullName}' must implements interface '{typeof(ICommandsDeclaringType).FullName}' to be registered as a command class");
}
var comsCount = 0;
object instance = Activator.CreateInstance(type, new object[] { });
var methods = type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly);
if (registerAsModule && _modules.ContainsKey(type.FullName))
{
Errorln($"a module with same name than commands type '{type.FullName}' is already registered");
return(0);
}
foreach (var method in methods)
{
var cmd = method.GetCustomAttribute <CommandAttribute>();
if (cmd != null)
{
if (!method.ReturnType.HasInterface(typeof(ICommandResult)))
{
Errorln($"class={type.FullName} method={method.Name} wrong return type. should be of type '{typeof(ICommandResult).FullName}', but is of type: {method.ReturnType.FullName}");
}
else
{
var paramspecs = new List <CommandParameterSpecification>();
bool syntaxError = false;
var pindex = 0;
foreach (var parameter in method.GetParameters())
{
if (pindex == 0)
{
// manadatory: param 0 is CommandEvaluationContext
if (parameter.ParameterType != typeof(CommandEvaluationContext))
{
Errorln($"class={type.FullName} method={method.Name} parameter 0 ('{parameter.Name}') should be of type '{typeof(CommandEvaluationContext).FullName}', but is of type: {parameter.ParameterType.FullName}");
syntaxError = true;
break;
}
}
else
{
CommandParameterSpecification pspec = null;
var paramAttr = parameter.GetCustomAttribute <ParameterAttribute>();
object defval = null;
if (!parameter.HasDefaultValue && parameter.ParameterType.IsValueType)
{
defval = Activator.CreateInstance(parameter.ParameterType);
}
if (paramAttr != null)
{
// TODO: validate command specification (eg. indexs validity)
pspec = new CommandParameterSpecification(
parameter.Name,
paramAttr.Description,
paramAttr.IsOptional,
paramAttr.Index,
null,
true,
parameter.HasDefaultValue,
(parameter.HasDefaultValue) ? parameter.DefaultValue : defval,
parameter);
}
var optAttr = parameter.GetCustomAttribute <OptionAttribute>();
if (optAttr != null)
{
var reqParamAttr = parameter.GetCustomAttribute <OptionRequireParameterAttribute>();
try
{
pspec = new CommandParameterSpecification(
parameter.Name,
optAttr.Description,
optAttr.IsOptional,
-1,
optAttr.OptionName ?? parameter.Name,
optAttr.HasValue,
parameter.HasDefaultValue,
(parameter.HasDefaultValue) ? parameter.DefaultValue : defval,
parameter,
reqParamAttr?.RequiredParameterName);
}
catch (Exception ex)
{
Errorln(ex.Message);
}
}
if (pspec == null)
{
syntaxError = true;
Errorln($"invalid parameter: class={type.FullName} method={method.Name} name={parameter.Name}");
}
else
{
paramspecs.Add(pspec);
}
}
pindex++;
}
if (!syntaxError)
{
var cmdNameAttr = method.GetCustomAttribute <CommandNameAttribute>();
var cmdName = (cmdNameAttr != null && cmdNameAttr.Name != null) ? cmdNameAttr.Name
: (cmd.Name ?? method.Name.ToLower());
var cmdspec = new CommandSpecification(
cmdName,
cmd.Description,
cmd.LongDescription,
cmd.Documentation,
method,
instance,
paramspecs);
bool registered = true;
if (_commands.TryGetValue(cmdspec.Name, out var cmdlst))
{
if (cmdlst.Select(x => x.MethodInfo.DeclaringType == type).Any())
{
Errorln($"command already registered: '{cmdspec.Name}' in type '{cmdspec.DeclaringTypeFullName}'");
registered = false;
}
else
{
cmdlst.Add(cmdspec);
}
}
else
{
_commands.Add(cmdspec.Name, new List <CommandSpecification> {
cmdspec
});
}
if (registered)
{
_syntaxAnalyzer.Add(cmdspec);
comsCount++;
}
}
}
}
}
if (registerAsModule)
{
if (comsCount == 0)
{
Errorln($"no commands found in type '{type.FullName}'");
}
else
{
var descAttr = type.GetCustomAttribute <CommandsAttribute>();
var description = descAttr != null ? descAttr.Description : "";
_modules.Add(type.FullName, new CommandsModule(CommandsModule.DeclaringTypeShortName(type), description, type.Assembly, 1, comsCount, type));
}
}
return(comsCount);
}
public void RegisterCommandsClass <T>(CommandEvaluationContext context) => RegisterCommandsClass(context, typeof(T), true);
public int RegisterCommandsClass(CommandEvaluationContext context, Type type) => RegisterCommandsClass(context, type, true);
void InitializeCommandProcessor(string[] args, bool printInfo = true, CommandEvaluationContext commandEvaluationContext = null)
{
SetArgs(args);
cons.ForegroundColor = DefaultForeground;
cons.BackgroundColor = DefaultBackground;
commandEvaluationContext = commandEvaluationContext ??
new CommandEvaluationContext(
this,
Out,
cons.In,
Err,
null
);
CommandEvaluationContext = commandEvaluationContext;
if (printInfo)
{
PrintInfo(CommandEvaluationContext);
}
// assume the application folder ($env.APPDATA/OrbitalShell) exists and is initialized
var lbr = false;
// creates user app data folders
if (!Directory.Exists(AppDataFolderPath))
{
LogAppendAllLinesErrorIsEnabled = false;
Info(ColorSettings.Log + $"creating user shell folder: '{AppDataFolderPath}' ... ", false);
try
{
Directory.CreateDirectory(AppDataFolderPath);
Success();
} catch (Exception createAppDataFolderPathException)
{
Fail(createAppDataFolderPathException);
}
lbr = true;
}
// initialize log file
if (!File.Exists(LogFilePath))
{
Info(ColorSettings.Log + $"creating log file: '{LogFilePath}' ... ", false);
try
{
var logError = Log($"file created on {System.DateTime.Now}");
if (logError == null)
{
Success();
}
else
{
throw logError;
}
}
catch (Exception createLogFileException)
{
LogAppendAllLinesErrorIsEnabled = false;
Fail(createLogFileException);
}
lbr = true;
}
// initialize user profile
if (!File.Exists(UserProfileFilePath))
{
Info(ColorSettings.Log + $"creating user profile file: '{UserProfileFilePath}' ... ", false);
try
{
var defaultProfileFilePath = Path.Combine(DefaultsFolderPath, UserProfileFileName);
File.Copy(defaultProfileFilePath, UserProfileFilePath);
Success();
}
catch (Exception createUserProfileFileException)
{
Fail(createUserProfileFileException);
}
lbr = true;
}
// create/restore commands history
CmdsHistory = new CommandsHistory();
var createNewHistoryFile = !File.Exists(HistoryFilePath);
if (createNewHistoryFile)
{
Info(ColorSettings.Log + $"creating user commands history file: '{HistoryFilePath}' ... ", false);
}
try
{
if (createNewHistoryFile)
#pragma warning disable CS0642 // Possibilité d'instruction vide erronée
{
using (var fs = File.Create(HistoryFilePath));
}
#pragma warning restore CS0642 // Possibilité d'instruction vide erronée
CmdsHistory.Init(AppDataFolderPath, HistoryFileName);
if (createNewHistoryFile)
{
Success();
}
}
catch (Exception createUserProfileFileException)
{
Fail(createUserProfileFileException);
}
lbr |= createNewHistoryFile;
// create/restore user aliases
CommandsAlias = new CommandsAlias();
var createNewCommandsAliasFile = !File.Exists(CommandsAliasFilePath);
if (createNewCommandsAliasFile)
{
Info(ColorSettings.Log + $"creating user commands aliases file: '{CommandsAliasFilePath}' ... ", false);
}
try
{
if (createNewCommandsAliasFile)
{
var defaultAliasFilePath = Path.Combine(DefaultsFolderPath, CommandsAliasFileName);
File.Copy(defaultAliasFilePath, CommandsAliasFilePath);
}
if (createNewCommandsAliasFile)
{
Success();
}
}
catch (Exception createUserProfileFileException)
{
Fail(createUserProfileFileException);
}
lbr |= createNewHistoryFile;
// end inits
if (lbr)
{
Out.Echoln();
}
// load kernel commands
RegisterCommandsAssembly(CommandEvaluationContext, Assembly.GetExecutingAssembly());
#if enable_test_commands
RegisterCommandsClass <TestCommands>();
#endif
}
