public int RegisterCommandClass(
CommandEvaluationContext context,
Type type,
bool registerAsModule
)
{
if (type.GetInterface(typeof(ICommandsDeclaringType).FullName) == null)
{
throw new Exception($"the type '{type.FullName}' must implements interface '{typeof(ICommandsDeclaringType).FullName}' to be registered as a command class");
}
var dtNamespaceAttr = type.GetCustomAttribute <CommandsNamespaceAttribute>();
var dtNamespace = (dtNamespaceAttr == null) ? "" : CheckAndNormalizeCommandNamespace(dtNamespaceAttr.Segments);
var comsCount = 0;
object instance = Activator.CreateInstance(type, new object[] { });
var methods = type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly);
if (registerAsModule && _modules.ContainsKey(type.FullName))
{
context.Errorln($"a module with same name than the commands declaring 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)))
{
context.Errorln($"class={type.FullName} method={method.Name} wrong return type. should be of type '{typeof(ICommandResult).FullName}', but is of type: {method.ReturnType.FullName}");
}
else
{
// ⏺ build the command specification from the method meta-data
var cmdNamespaceAttr = method.GetCustomAttribute <CommandNamespaceAttribute>();
var cmdNamespace = cmdNamespaceAttr == null ? dtNamespace : CheckAndNormalizeCommandNamespace(cmdNamespaceAttr.Segments);
var cmdAliasesAttrLst = method.GetCustomAttributes <CommandAliasAttribute>();
var cmdAliases = cmdAliasesAttrLst?.Select(x => (x.AliasName, x.AliasText)).ToList();
if (cmdAliases.Count == 0)
{
cmdAliases = null; // convention
}
#region init from method parameters attributes
var paramspecs = new List <CommandParameterSpecification>();
bool syntaxError = false;
var pindex = 0;
foreach (var parameter in method.GetParameters())
{
if (pindex == 0)
{
// manadatory: param 0 is CommandEvaluationContext
if (parameter.ParameterType != typeof(CommandEvaluationContext))
{
context.Errorln($"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;
object defval = null;
if (!parameter.HasDefaultValue && parameter.ParameterType.IsValueType)
{
defval = Activator.CreateInstance(parameter.ParameterType);
}
// param
var paramAttr = parameter.GetCustomAttribute <ParameterAttribute>();
if (paramAttr != null)
{
// TODO: validate command specification (eg. indexs validity)
pspec = new CommandParameterSpecification(
parameter.Name,
paramAttr.Description,
paramAttr.IsOptional,
paramAttr.Index,
null,
null,
true,
parameter.HasDefaultValue,
paramAttr.HasDefaultValue ?
paramAttr.DefaultValue
: ((parameter.HasDefaultValue) ? parameter.DefaultValue : defval),
parameter);
}
// option
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.OptionLongName,
optAttr.HasValue,
parameter.HasDefaultValue,
optAttr.HasDefaultValue ?
optAttr.DefaultValue
: ((parameter.HasDefaultValue) ? parameter.DefaultValue : defval),
parameter,
reqParamAttr?.RequiredParameterName);
}
catch (Exception ex)
{
context.Errorln(ex.Message);
}
}
if (pspec == null)
{
syntaxError = true;
context.Errorln($"invalid parameter: class={type.FullName} method={method.Name} name={parameter.Name}");
}
else
{
paramspecs.Add(pspec);
}
}
pindex++;
}
#endregion
if (!syntaxError)
{
var cmdNameAttr = method.GetCustomAttribute <CommandNameAttribute>();
var cmdName = CheckAndNormalizeCommandName(
(cmdNameAttr != null && cmdNameAttr.Name != null) ?
cmdNameAttr.Name
: (cmd.Name ?? method.Name));
bool registered = true;
CommandSpecification cmdspec = null;
try
{
cmdspec = new CommandSpecification(
cmdNamespace,
cmdName,
cmd.Description,
cmd.LongDescription,
cmd.Documentation,
method,
instance,
cmdAliases,
paramspecs);
} catch (Exception ex)
{
context.Errorln($"error in command '{cmdName}' specification: {ex.Message}");
}
if (cmdspec != null)
{
if (_commands.TryGetValue(cmdspec.Name, out var cmdlst))
{
if (cmdlst.Select(x => x.MethodInfo.DeclaringType == type).Any())
{
context.Errorln($"command already registered: '{cmdspec.Name}' in type '{cmdspec.DeclaringTypeFullName}'");
registered = false;
}
else
{
cmdlst.Add(cmdspec);
}
}
else
{
_commands.Add(cmdspec.Name, new List <CommandSpecification> {
cmdspec
});
}
if (registered)
{
_syntaxAnalyzer.Add(cmdspec);
comsCount++;
// register command Aliases
if (cmdspec.Aliases != null)
{
foreach (var alias in cmdspec.Aliases)
{
context.CommandLineProcessor.CommandsAlias.AddOrReplaceAlias(
context,
alias.name,
alias.text
);
}
}
}
}
}
}
}
}
if (registerAsModule)
{
if (comsCount == 0)
{
context.Errorln($"no commands found in type '{type.FullName}'");
}
else
{
var descAttr = type.GetCustomAttribute <CommandsAttribute>();
var description = descAttr != null ? descAttr.Description : "";
_modules.Add(
type.FullName, // key not from assembly but from type
new ModuleSpecification(
type.FullName,
ModuleUtil.DeclaringTypeShortName(type),
description,
type.Assembly,
new ModuleInfo(
1,
comsCount
),
type
));
}
}
return(comsCount);
}
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);
}