Added main Datavars module and its functionality is almost implemented.

calculate/templates/template_engine.py

@@ -159,6 +159,7 @@ class ParametersProcessor:
 
     def check_template_parameter(self, parameter_name, parameter_value,
                                  template_type, lineno):
+        '''Метод, проверяющий указанный параметр.'''
         self.lineno = lineno
         self.template_type = template_type
 
@@ -191,6 +192,7 @@ class ParametersProcessor:
                                                {parameter_name: checked_value})
 
     def check_postparse_parameters(self):
+        '''Метод, запускающий проверку параметров после их разбора.'''
         for parameter, parameter_checker in\
                 self.postparse_checkers_list.items():
             if parameter not in self._parameters_container:
@@ -200,6 +202,7 @@ class ParametersProcessor:
             parameter_checker(parameter_value)
 
     def check_template_parameters(self, parameters, template_type, lineno):
+        '''Метод, запускающий проверку указанных параметров.'''
         self.template_type = template_type
         self.lineno = lineno
 
@@ -230,6 +233,8 @@ class ParametersProcessor:
             self._parameters_container.set_parameter(
                                               parameter_name=checked_value)
 
+    # Методы для проверки параметров во время разбора шаблона.
+
     def check_package_parameter(self, parameter_value):
         try:
             atom_object = self.package_atom_parser.parse_package_parameter(
@@ -774,6 +779,8 @@ class CalculateExtension(Extension):
         '''Метод для разбора тега save, сохраняющего значение указанной
         переменной datavars.'''
         lineno = next(self.stream).lineno
+
+        # Целового файла больше не будет.
         target_file = nodes.Const('', lineno=lineno)
 
         if self.stream.skip_if('dot'):

calculate/utils/gentoo.py

@@ -1,30 +1,31 @@
 import os
 import re
-import calculate.utils.fs as fs
+from calculate.utils.files import read_file_lines
 
 
 class ProfileWalker:
-    """
-    Объект обходящий все директории профиля через parent файлы
-    """
+    '''Объект обходящий все директории профиля через parent файлы.'''
     def __init__(self, filename, repositories):
         self.repositories = repositories
         self.filename = filename
-        self.reReppath = re.compile("^({0})+:".format(
+        self.re_reppath = re.compile("^({0})+:".format(
                                            "|".join(self.repositories.keys())))
 
     def interpolate(self, path):
         def subfunc(m):
             return "{0}/profiles/".format(self.repositories.get(m.group(1)))
-        return self.reReppath.sub(subfunc, path)
+        return self.re_reppath.sub(subfunc, path)
 
     def find(self, directory):
-        parent = os.path.join(directory, "parent")
-        for line in (x for x in fs.readFileLines(parent) if x.strip()):
-            parentdir = os.path.normpath(
+        '''Метод для поиска по профилю всех файлов с именем, указанным в
+        self.filename.'''
+        parent_file_path = os.path.join(directory, "parent")
+        for line in (parent_line for parent_line in
+                     read_file_lines(parent_file_path) if parent_line.strip()):
+            parent_directory = os.path.normpath(
                                os.path.join(directory, self.interpolate(line)))
-            if fs.exists(parentdir):
-                yield from self.find(parentdir)
+            if os.path.exists(parent_directory):
+                yield from self.find(parent_directory)
         findfile = os.path.normpath(os.path.join(directory, self.filename))
-        if fs.exists(findfile):
+        if os.path.exists(findfile):
             yield findfile

calculate/variables/datavars.py

@@ -1,6 +1,6 @@
 import ast
 import dis
-from typing import List, Union, Any
+from typing import List, Any
 from contextlib import contextmanager
 from inspect import signature, getsource
 from types import FunctionType, LambdaType
@@ -36,9 +36,14 @@ class VariableType:
     name = 'undefined'
 
     @classmethod
-    def process_value(self, value, variable):
+    def process_value(cls, value, variable):
         return value
 
+    @classmethod
+    def readonly(cls, variable_object) -> None:
+        variable_object.variable_type = cls
+        variable_object.readonly = True
+
 
 class IniType(VariableType):
     '''Класс, соответствующий типу переменных созданных в calculate.ini файлах.
@@ -46,7 +51,7 @@ class IniType(VariableType):
     name = 'ini'
 
     @classmethod
-    def process_value(self, value, variable):
+    def process_value(cls, value, variable):
         return value
 
 
@@ -55,7 +60,7 @@ class StringType(VariableType):
     name = 'string'
 
     @classmethod
-    def process_value(self, value, variable) -> str:
+    def process_value(cls, value, variable) -> str:
         if isinstance(value, str):
             return value
         else:
@@ -73,7 +78,7 @@ class IntegerType(VariableType):
     name = 'integer'
 
     @classmethod
-    def process_value(self, value, variable) -> int:
+    def process_value(cls, value, variable) -> int:
         if isinstance(value, int):
             return value
         else:
@@ -91,7 +96,7 @@ class FloatType(VariableType):
     name = 'float'
 
     @classmethod
-    def process_value(self, value, variable) -> float:
+    def process_value(cls, value, variable) -> float:
         if isinstance(value, float):
             return value
         else:
@@ -111,13 +116,13 @@ class BooleanType(VariableType):
     false_values = {'False', 'false'}
 
     @classmethod
-    def process_value(self, value, variable) -> bool:
+    def process_value(cls, value, variable) -> bool:
         if isinstance(value, bool):
             return value
         elif isinstance(value, str):
-            if value in self.true_values:
+            if value in cls.true_values:
                 return True
-            if value in self.false_values:
+            if value in cls.false_values:
                 return False
         try:
             return bool(value)
@@ -132,7 +137,7 @@ class ListType(VariableType):
     name = 'list'
 
     @classmethod
-    def process_value(self, value, variable) -> list:
+    def process_value(cls, value, variable) -> list:
         # TODO нормально все сделать.
         if isinstance(value, list):
             return value
@@ -181,6 +186,7 @@ class Hash:
     '''Класс реализующий контейнер для хранения хэша в переменной
     соответствующего типа.'''
     def __init__(self, values: dict, master_variable, parent=None):
+        self.fixed = master_variable.fixed
         self._values = dict()
         for key, value in values.items():
             self._values.update({key: HashValue(key, value, master_variable,
@@ -189,11 +195,27 @@ class Hash:
         self.row_index = None
 
     def get_hash(self) -> dict:
+        '''Метод для получения словаря из значений хэша.'''
         dict_value = {}
         for key in self._values.keys():
             dict_value.update({key: self._values[key].get_value()})
         return dict_value
 
+    def update_hash(self, values: dict) -> None:
+        '''Метод для обновления значения хэша.'''
+        print('UPDATE HASH')
+        for key, value in values.items():
+            if key in self._values:
+                self._values[key].value = value
+            elif self.fixed:
+                raise VariableError("key '{}' is unavailable for fixed"
+                                    " hash, available keys: '{}'".
+                                    format(key, ', '.join(self._fields)))
+            else:
+                self._values[key] = HashValue(key, value, self.master_variable,
+                                              self)
+        return self
+
     def __getattr__(self, key: str):
         '''Метод возвращает ноду пространства имен или значение переменной.'''
         if key in self._values:
@@ -226,12 +248,21 @@ class HashType(VariableType):
     name = 'hash'
 
     @classmethod
-    def process_value(self, value, variable) -> Hash:
-        if not isinstance(value, dict):
+    def process_value(cls, values, variable) -> Hash:
+        if not isinstance(values, dict):
             raise VariableTypeError("can not set value with type '{_type}' to"
                                     " hash variable: value must be 'dict' type"
-                                    .format(_type=type(value)))
-        return Hash(value, variable)
+                                    .format(_type=type(values)))
+        if variable.value is not None:
+            updated_hash = variable.value.update_hash(values)
+        else:
+            updated_hash = Hash(values, variable)
+        return updated_hash
+
+    @classmethod
+    def fixed(cls, variable_object) -> None:
+        variable_object.variable_type = cls
+        variable_object.fixed = True
 
 
 class Table:
@@ -487,8 +518,8 @@ class VariableNode:
         # динамическом связывании.
         self._subscriptions = set()
 
-        # Если значение переменной None -- значит она обнулена.
         self.value = None
+        self._invalidated = True
 
         # Источник значения переменной, может быть значением, а может быть
         # зависимостью.
@@ -501,6 +532,10 @@ class VariableNode:
         self.set_by_user = False
 
         self._readonly = False
+        # Флаг имеющий значение только для переменных типа HashType.
+        # Предназначен для включения проверки соответствия полей хэша при
+        # установке значения.
+        self._fixed = False
 
     def update_value(self) -> None:
         '''Метод для обновления значения переменной с помощью указанного
@@ -537,6 +572,25 @@ class VariableNode:
             value = self._source
 
         self.value = self.variable_type.process_value(value, self)
+        self._invalidated = False
+
+    def set_variable_type(self, variable_type, readonly=None, fixed=None):
+        '''Метод для установки типа переменной.'''
+        if readonly is not None and isinstance(readonly, bool):
+            self._readonly = readonly
+        elif fixed is not None and isinstance(fixed, bool):
+            self._fixed = fixed
+
+        if self.variable_type is VariableType:
+            if isinstance(variable_type, type):
+                if issubclass(variable_type, VariableType):
+                    self.variable_type = variable_type
+                else:
+                    raise VariableError('variable type object must be'
+                                        ' VariableType or its class method,'
+                                        ' not {}'.format(type(variable_type)))
+            elif callable(variable_type):
+                variable_type(self)
 
     def set(self, value):
         self._invalidate()
@@ -550,7 +604,8 @@ class VariableNode:
     @source.setter
     def source(self, source) -> None:
         if self._readonly:
-            raise VariableError("can not change the variable '{}': read only")
+            raise VariableError("can not change the variable '{}': read only".
+                                format(self.get_fullname()))
 
         # Если источники не совпадают или текущее значение переменной было
         # установлено пользователем, то инвалидируем переменную и меняем
@@ -572,12 +627,22 @@ class VariableNode:
         #     self.update_value()
         self._readonly = value
 
+    @property
+    def fixed(self) -> bool:
+        return self._fixed
+
+    @fixed.setter
+    def fixed(self, value) -> bool:
+        self._fixed = value
+
     def _invalidate(self) -> None:
         '''Метод для инвалидации данной переменной и всех зависящих от нее
         переменных.'''
         # print('{} is invalidated'.format(self.get_fullname()))
-        if self.value is not None and not self.set_by_user:
+        if not self._invalidated and not self.set_by_user:
+            if self.variable_type is not HashType:
                 self.value = None
+            self._invalidated = True
             for subscriber in self.subscribers:
                 subscriber._invalidate()
 
@@ -593,7 +658,7 @@ class VariableNode:
 
     def get_value(self) -> Any:
         '''Метод для получения значения переменной.'''
-        if self.value is None and not self.set_by_user:
+        if self._invalidated and not self.set_by_user:
             self.update_value()
         return self.value
 
@@ -641,8 +706,8 @@ class NamespaceNode:
     def clear(self):
         '''Метод для очистки пространства имен. Очищает и пространства имен
         и переменные. Предназначен только для использования в calculate.ini.'''
-        for namespace in self.namespaces:
-            namespace.clear()
+        for namespace_name in self.namespaces.keys():
+            self.namespaces[namespace_name].clear()
         self.variables.clear()
         self.namespaces.clear()
 
@@ -653,7 +718,7 @@ class NamespaceNode:
         else:
             return self.name
 
-    def __getattr__(self, name: str) -> None:
+    def __getattr__(self, name: str):
         '''Метод возвращает ноду пространства имен или значение переменной.'''
         if name in self.namespaces:
             return self.namespaces[name]
@@ -747,14 +812,13 @@ class VariableAPI:
         self.errors = []
 
     def __call__(self, name: str, source=None, type=VariableType,
-                 readonly=False, force=False):
+                 readonly=False, fixed=False, force=False):
         '''Метод для создания переменных внутри with Namespace('name').'''
         if name not in self.current_namespace.variables:
             print('CREATE VARIABLE: {}'.format('{}.{}'.format(
                                          self.current_namespace.get_fullname(),
                                          name)))
-            variable = VariableNode(name, self.current_namespace,
-                                    variable_type=type)
+            variable = VariableNode(name, self.current_namespace)
         else:
             print('MODIFY VARIABLE: {}'.format(name))
             variable = self.current_namespace[name]
@@ -770,7 +834,12 @@ class VariableAPI:
         else:
             variable.source = source
 
-        variable.readonly = readonly
+        if readonly:
+            variable.set_variable_type(type, readonly=True)
+        elif fixed:
+            variable.set_variable_type(type, fixed=True)
+        else:
+            variable.set_variable_type(type)
         return variable
 
 
@@ -798,15 +867,18 @@ class NamespaceAPI:
         можно получить доступ к переменным.'''
         return self._datavars
 
-    def set_root(self, datavars_root: NamespaceNode):
+    def set_datavars(self, datavars):
         '''Метод для установки корневого пространства имен, которое пока что
         будет использоваться для предоставления доступа к переменным.'''
-        self._datavars = datavars_root
+        self._datavars = datavars
         self._variables_fabric.current_namespace = self._datavars
 
     def reset(self):
         '''Метод для сброса корневого пространства имен.'''
+        if isinstance(self._datavars, NamespaceNode):
             self._datavars = NamespaceNode('<root>')
+        else:
+            self._datavars.reset()
         self.current_namespace = self._datavars
 
         self._variables_fabric.current_namespace = self._datavars

calculate/variables/loader.py

@@ -4,11 +4,12 @@ import os
 import importlib
 import importlib.util
 import site
-from calculate.vars.datavars import Variable, HashVariable, TableVariable
-from calculate.vars.alt_datavars import NamespaceNode, VariableNode,\
+from calculate.variables.old_vars.datavars import Variable, HashVariable,\
+                                                  TableVariable
+from calculate.variables.datavars import NamespaceNode, VariableNode,\
                                          ListType, IntegerType,\
                                          FloatType, IniType, TableType,\
-                                        Namespace
+                                         Namespace, VariableError
 from calculate.utils.gentoo import ProfileWalker
 from calculate.utils.files import list_directory, read_file, FilesError
 from pyparsing import Literal, Word, ZeroOrMore, Group, Optional, restOfLine,\
@@ -182,10 +183,17 @@ class NamespaceIniFiller:
 
     def start_section(self, sections: str) -> None:
         '''Метод для получения доступа и создания пространств имен.'''
+        print('SECTIONS: {}'.format(sections))
         if self.restricted:
             self.modify_only = sections[0] not in self.available_sections
         self.current_namespace = self.namespace
         for section in sections:
+            print('START SECTION: {}'.format(section))
+            if isinstance(self.current_namespace, Datavars):
+                if section not in self.current_namespace:
+                    raise VariableError("variables package '{}' is not found".
+                                        format(section))
+            elif isinstance(self.current_namespace, NamespaceNode):
                 if section not in self.current_namespace.namespaces:
                     if not self.modify_only:
                         self.current_namespace.add_namespace(
@@ -202,8 +210,12 @@ class NamespaceIniFiller:
         current_namespace = self.namespace
 
         for section in sections:
+            if (isinstance(current_namespace, Datavars) and
+               section in current_namespace):
+                current_namespace = current_namespace[section]
+            elif isinstance(current_namespace, NamespaceNode):
                 if section in current_namespace.namespaces:
-                current_namespace = current_namespace.namespaces[section]
+                    current_namespace = current_namespace[section]
                 elif (section in current_namespace.variables and
                       current_namespace.variables[section].variable_type
                       is TableType):
@@ -249,6 +261,8 @@ class NamespaceIniFiller:
             table_variable.source = table
 
     def define_key(self, key: str, value: str, optype) -> None:
+        print('DEFINE KEY: {} -> {} TO {}'.format(key, value,
+                                                  self.current_namespace))
         if self.current_namespace is None:
             return
 
@@ -345,17 +359,35 @@ class NamespaceIniFiller:
 
 
 class VariableLoader:
-    basename = "calculate.ini"
-
-    def load_variables(self, directory_path) -> NamespaceNode:
-        root = Namespace.datavars
-        package = '.'.join(directory_path.split('/'))
-        self._fill_from_package(root, directory_path, package)
-        return root
+    '''Класс загрузчика переменных из python-файлов и из ini-файлов.'''
+    ini_basename = "calculate.ini"
+
+    def __init__(self, datavars, variables_path, repository_map=None):
+        self.datavars = datavars
+        self.ini_filler = NamespaceIniFiller()
+
+        self.variables_path = variables_path
+        self.variables_package = '.'.join(variables_path.split('/'))
+        self.repository_map = repository_map
+
+    def load_variables_package(self, package_name: str) -> None:
+        '''Метод для загрузки пакетов с переменными.'''
+        directory_path = os.path.join(self.variables_path, package_name)
+        package = '{}.{}'.format(self.variables_package, package_name)
+        package_namespace = NamespaceNode(package_name)
+        self.datavars.root.add_namespace(package_namespace)
+        self._fill_from_package(package_namespace, directory_path, package)
+
+    def load_from_profile(self):
+        if self.repository_map != {}:
+            self.repository_map = (self.repository_map or
+                                   self._get_repository_map(self.datavars))
+            profile_path = self.datavars.os.gentoo.profile.path
+            self._fill_from_ini(profile_path)
 
     def _fill_from_package(self, current_namespace: NamespaceNode,
                            directory_path: str, package: str) -> None:
-        print('FILL -> {}'.format(current_namespace))
+        '''Метод для зaполнения переменных из python-файла.'''
         file_nodes = []
         directory_nodes = []
         # Просматриваем директорию
@@ -385,21 +417,31 @@ class VariableLoader:
                                     '{}.{}'.format(package,
                                                    directory_node.name))
 
-    def _fill_from_ini(self, datavars, profile_path):
-        ini_filler = NamespaceIniFiller()
-        profile_walker = ProfileWalker(self.basename,
-                                       self.get_repository_map(datavars))
+    def _fill_from_ini(self, profile_path):
+        '''Метод для зaполнения переменных из ini-файла.'''
+        print('PROCESSING INI FROM PROFILE')
+        profile_walker = ProfileWalker(self.ini_basename,
+                                       self.repository_map)
         for file_path in profile_walker.find(profile_path):
             try:
+                print('PROCESS FILE: {}'.format(file_path))
                 ini_file_text = read_file(file_path)
-                ini_filler.fill(datavars, ini_file_text)
+                self.ini_filler.fill(self.datavars, ini_file_text)
             except FilesError:
+                # TODO продумать обработку ошибок.
                 pass
 
-    def get_repository_map(self, datavars):
+    def _get_repository_map(self, datavars):
         return {repo['name']: repo['path']
                 for repo in datavars.os.gentoo.repositories}
 
+    def fill_from_custom_ini(self, file_path: str):
+        '''Метод для заполнения переменных из конкретного указанного файла.'''
+        print('LOAD FROM INI: {}'.format(file_path))
+        if os.path.exists(file_path):
+            ini_file_text = read_file(file_path)
+            self.ini_filler.fill(self.datavars, ini_file_text)
+
     @contextmanager
     def test(self, file_name, namespace):
         print('IMPORT: {}.{}'.format(namespace.get_fullname(), file_name))
@@ -410,6 +452,80 @@ class VariableLoader:
                                                 file_name))
 
 
+class Datavars:
+    '''Класс для хранения переменных и управления ими.'''
+    def __init__(self, variables_path='calculate/vars', repository_map=None):
+        self._variables_path = variables_path
+        self._available_packages = self._get_available_packages()
+
+        self.root = NamespaceNode('<root>')
+        self._loader = VariableLoader(self, self._variables_path,
+                                      repository_map=repository_map)
+        Namespace.reset()
+        Namespace.set_datavars(self)
+
+        self._loader.load_from_profile()
+
+    def reset(self):
+        '''Метод для сброса модуля переменных.'''
+        self.root.clear()
+        self.root = NamespaceNode('<root>')
+        self._available_packages.clear()
+        self._available_packages = self._get_available_packages()
+        Namespace.set_datavars(self)
+
+    def _get_available_packages(self) -> dict:
+        '''Метод для получения словаря с имеющимися пакетами переменных
+        и путями к ним.'''
+        available_packages = dict()
+        for file_name in os.listdir(self._variables_path):
+            if file_name.startswith('__'):
+                continue
+            file_path = os.path.join(self._variables_path, file_name)
+            if os.path.isdir(file_path):
+                available_packages.update({file_name: file_path})
+        return available_packages
+
+    def __getattr__(self, package_name: str):
+        '''Метод возвращает ноду пространства имен, соответствующего искомому
+        пакету.'''
+        print('getattr: {}'.format(package_name))
+        if package_name in self.root.namespaces:
+            return self.root[package_name]
+        elif package_name not in self._available_packages:
+            raise VariableError("variables package '{}' is not found".
+                                format(package_name))
+        else:
+            self._loader.load_variables_package(package_name)
+            return self.root[package_name]
+
+    def __getitem__(self, package_name: str) -> None:
+        '''Метод возвращает ноду пространства имен, соответствующего искомому
+        пакету.'''
+        print('getitem: {}'.format(package_name))
+        if package_name in self.root:
+            return self.root[package_name]
+        elif package_name not in self._available_packages:
+            raise VariableError("variables package '{}' is not found".
+                                format(package_name))
+        else:
+            self._loader.load_variables_package(package_name)
+            return self.root[package_name]
+
+    def __contains__(self, package_name):
+        if package_name in self.root.namespaces:
+            return True
+        elif package_name not in self._available_packages:
+            return False
+        else:
+            self._loader.load_variables_package(package_name)
+            return True
+
+    @property
+    def namespaces(self):
+        return self.root.namespaces
+
+
 class OldVariableLoader:
     '''Класс, используемый для загрузки переменных из python модуля.'''
     re_upper = re.compile("(.)([A-Z])")

calculate/variables/old_vars/main/__init__.py

@@ -0,0 +1,5 @@
+from calculate.vars.datavars import Variable, ReadonlyVariable
+
+class Chroot(Variable):
+    properties = [ReadonlyVariable]
+    value = "/"

calculate/variables/old_vars/os/gentoo/__init__.py

@@ -0,0 +1,88 @@
+from calculate.vars.datavars import Variable, ChoiceVariable, HashVariable, TableVariable, Namespace
+from calculate.utils.files import stderr_devnull
+import calculate.utils.fs as fs
+import os
+
+"""
+gentoo
+  make_profile
+  profile.path
+  profile.name
+  repositories[*].name
+  repositories[*].path
+  config
+"""
+
+class MakeProfile(Variable):
+    """
+    Путь до файла, указывающего на активный профиль
+    """
+    value = '/etc/portage/make.profile'
+
+class Profile(Namespace):
+    """
+    Параметры текущего профиля
+    """
+    class Path(Variable):
+        """
+        Абсолютный путь до профиля
+        """
+        def get(self):
+            make_profile = self.vars.parent.make_profile.getValue(self)
+            make_profile_dir = os.path.dirname(make_profile)
+            profileLink = fs.readlink(make_profile)
+            if profileLink:
+                profileLink = os.path.normpath(
+                    os.path.join(make_profile_dir,profileLink))
+                return profileLink
+            else:
+                return ""
+    
+    class Name(Variable):
+        """
+        Название профиля
+        """
+        def get(self):
+            profile_path = self.vars.path.getValue(self)
+            if not profile_path:
+                return ""
+            repositories = self.vars.parent.repositories
+            for rep in repositories:
+                reppath = rep.path.getValue(self)
+                repname = rep.name.getValue(self)
+                removepart = os.path.normpath(os.path.join(reppath,"profiles"))
+                if profile_path.startswith(removepart):
+                    return "%s:%s"%(
+                        repname,
+                        profile_path[len(removepart)+1:])
+            return profile_path
+
+class Repositories(TableVariable):
+    """
+    Информация о репозиториях
+
+    name: имя репозитория
+    path: полный путь до репозитория
+    """
+    class Data(TableVariable.Data):
+        def get(self):
+            config = self.vars.config.getValue(self)
+            return [
+                {
+                    'name': name,
+                    'path': path 
+                }
+                for path, name in config.repositories.location_map.items()
+            ]
+    hash_vars = ["name", "path"]
+
+class Config(Variable):
+    """
+    Объект текущей конфигурации Portage
+    """
+    def get(self):
+        from portage.package.ebuild.config import config
+        chroot_path = self.vars.root.main.chroot.getValue(self)
+        if chroot_path == '/':
+            with stderr_devnull():
+                return config()

calculate/variables/old_vars/vars_loader.py

@@ -4,8 +4,9 @@ import os
 import importlib
 import importlib.util
 import site
-from calculate.vars.datavars import Variable, Namespace, HashVariable,\
-                                    TableVariable, IniCreated, DefaultValue
+from calculate.variables.old_vars.datavars import Variable, Namespace,\
+                                                  HashVariable, TableVariable,\
+                                                  IniCreated, DefaultValue
 from calculate.utils.gentoo import ProfileWalker
 from calculate.utils.fs import readFile
 from calculate.utils.files import list_directory

calculate/vars/main/__init__.py

@@ -1,5 +1,7 @@
-from calculate.vars.datavars import Variable, ReadonlyVariable
+from calculate.variables.datavars import Variable, StringType
+'''
+main:
+    chroot -> string
+'''
 
-class Chroot(Variable):
-    properties = [ReadonlyVariable]
-    value = "/"
+Variable('chroot', type=StringType.readonly, source='/')

calculate/vars/os/gentoo/__init__.py

@@ -1,88 +1,79 @@
-from calculate.vars.datavars import Variable, ChoiceVariable, HashVariable, TableVariable, Namespace
-from calculate.utils.files import stderr_devnull
-import calculate.utils.fs as fs
 import os
+from calculate.utils.files import stderr_devnull
+from calculate.utils.files import read_link, FilesError
+from calculate.variables.datavars import Variable, Namespace, Dependence,\
+                                         StringType, TableType
+'''
+gentoo:
+      make_profile -> string
+      profile:
+          path -> string
+          name -> string
+      repositories[*]{name, path} -> table
+      config -> undefined
+'''
 
-"""
-gentoo
-  make_profile
-  profile.path
-  profile.name
-  repositories[*].name
-  repositories[*].path
-  config
-"""
+# Путь до файла, указывающего на активный профиль
+Variable('make_profile', type=StringType, source='/etc/portage/make.profile')
 
-class MakeProfile(Variable):
-    """
-    Путь до файла, указывающего на активный профиль
-    """
-    value = '/etc/portage/make.profile'
+# Параметры текущего профиля.
+with Namespace('profile'):
+    def get_profile_link(make_profile):
+        make_profile_dir = os.path.dirname(make_profile.value)
+        try:
+            profile_link = read_link(make_profile)
+        except FilesError:
+            return ""
 
-class Profile(Namespace):
-    """
-    Параметры текущего профиля
-    """
-    class Path(Variable):
-        """
-        Абсолютный путь до профиля
-        """
-        def get(self):
-            make_profile = self.vars.parent.make_profile.getValue(self)
-            make_profile_dir = os.path.dirname(make_profile)
-            profileLink = fs.readlink(make_profile)
-            if profileLink:
-                profileLink = os.path.normpath(
-                    os.path.join(make_profile_dir,profileLink))
-                return profileLink
+        if profile_link:
+            profile_link = os.path.normpath(
+                                  os.path.join(make_profile_dir, profile_link))
+            return profile_link
         else:
             return ""
+    # Абсолютный путь до профиля
+    Variable('path', type=StringType,
+             source=Dependence('..make_profile', depend=get_profile_link))
 
-    class Name(Variable):
-        """
-        Название профиля
-        """
-        def get(self):
-            profile_path = self.vars.path.getValue(self)
+    def get_profile_name(path, repositories):
+        profile_path = path.value
         if not profile_path:
             return ""
-            repositories = self.vars.parent.repositories
-            for rep in repositories:
-                reppath = rep.path.getValue(self)
-                repname = rep.name.getValue(self)
-                removepart = os.path.normpath(os.path.join(reppath,"profiles"))
-                if profile_path.startswith(removepart):
-                    return "%s:%s"%(
-                        repname,
-                        profile_path[len(removepart)+1:])
+
+        for repository in repositories.value:
+            repository_path = repository['path']
+            repository_name = repository['name']
+            remove_part = os.path.normpath(os.path.join(repository_path,
+                                                        "profiles"))
+            if profile_path.startswith(remove_part):
+                return "{}:{}".format(repository_name,
+                                      profile_path[len(remove_part) + 1:])
         return profile_path
+    # Название профиля
+    Variable('name', type=StringType,
+             source=Dependence('.path', '..repositories',
+                               depend=get_profile_link))
+
 
-class Repositories(TableVariable):
-    """
-    Информация о репозиториях
+def get_repository_table(config):
+    return [{'name': name,
+             'path': path}
+            for path, name in config.value.repositories.location_map.items()]
 
-    name: имя репозитория
-    path: полный путь до репозитория
-    """
-    class Data(TableVariable.Data):
-        def get(self):
-            config = self.vars.config.getValue(self)
-            return [
-                {
-                    'name': name,
-                    'path': path 
-                }
-                for path, name in config.repositories.location_map.items()
-            ]
-    hash_vars = ["name", "path"]
 
-class Config(Variable):
-    """
-    Объект текущей конфигурации Portage
-    """
-    def get(self):
+# Информация о репозиториях
+# name: имя репозитория
+# path: полный путь до репозитория
+Variable('repositories', type=TableType,
+         source=Dependence('.config', depend=get_repository_table))
+
+
+def get_config_object(chroot_path):
     from portage.package.ebuild.config import config
-        chroot_path = self.vars.root.main.chroot.getValue(self)
-        if chroot_path == '/':
+    if chroot_path.value == '/':
         with stderr_devnull():
             return config()
+
+
+# Объект текущей конфигурации Portage
+Variable('config', source=Dependence('main.chroot', depend=get_config_object))

calculate/vars/system/__init__.py

@@ -0,0 +1,13 @@
+from calculate.variables.datavars import Variable, ListType, HashType
+'''
+system:
+    env_order -> list
+    env_path -> hash
+'''
+
+# Список мест, где есть calculate.ini файлы.
+Variable('env_order', type=ListType.readonly,
+         source=['grp', 'system', 'etc', 'local', 'remote'])
+
+# Отображение множества мест, где есть calculate.ini файлы, на пути к ним.
+Variable('env_path', type=HashType, source=dict())

pytest.ini

@@ -24,8 +24,8 @@ markers =
     files_utils: marker for running tests for calculate.utils.files module.
     package_utils: marker for running tests for calculate.utils.contents module.
     
-    vars: marker for running tests for datavars
-    alt_vars: marker for testing alternative version of the datavars module.
+    old_vars: marker for running tests for datavars
+    vars: marker for testing alternative version of the datavars module.
     gentoo: marker for running tests for utils.gentoo
     calculateini: marker for running tests for utils.calculateini
     template_engine: marker for running tests for TemplateEngine.

tests/variables/old_vars/old_vars.py

@@ -1,16 +1,22 @@
 import pytest
 import os
-from calculate.vars.datavars import Namespace, Variable, CyclicVariableError,\
-                                    VariableError, ReadonlyVariable,\
-                                    ChoiceVariable, IntegerVariable,\
-                                    StringVariable, DefaultValue,\
+from calculate.variables.old_vars.datavars import Namespace, Variable,\
+                                                  CyclicVariableError,\
+                                                  VariableError,\
+                                                  ReadonlyVariable,\
+                                                  ChoiceVariable,\
+                                                  IntegerVariable,\
+                                                  StringVariable,\
+                                                  DefaultValue,\
                                                   TableVariable, HashVariable,\
                                                   VariableNotFoundError
-from calculate.vars.vars_loader import NamespaceIniFiller, VariableLoader,\
-                                       ProfileFiller, NamespaceIniFillerStrict
+from calculate.variables.old_vars.vars_loader import NamespaceIniFiller,\
+                                                     VariableLoader,\
+                                                     ProfileFiller,\
+                                                     NamespaceIniFillerStrict
 
 
-@pytest.mark.vars
+@pytest.mark.old_vars
 class TestNamespace:
     def test_init_empty_namespace(self):
         ns = Namespace()

tests/variables/test_calculateini.py

@@ -1,9 +1,8 @@
 import pytest
-from calculate.vars.vars_loader import CalculateIniParser, Define
+from calculate.variables.loader import CalculateIniParser, Define
 
 
 @pytest.mark.vars
-@pytest.mark.calculateini
 class TestCalculateIni:
     def test_empty_calculate_ini(self):
         pass
@@ -17,8 +16,7 @@ class TestCalculateIni:
                       "varval1 = value1\n")
 
         parsed_lines = [{'start_section': (['section'],)},
-                        {'define_key': (['section'], 'varval1',
-                                        'value1', Define.assign)},
+                        {'define_key': ('varval1', 'value1', Define.assign)},
                         ]
 
         parse_result = list(ini_parser.parse(input_text))
@@ -35,12 +33,9 @@ class TestCalculateIni:
                       "varval3 -= value3\n")
 
         parsed_lines = [{'start_section': (['section'],)},
-                        {'define_key': (['section'], 'varval1',
-                                        'value1', Define.assign)},
-                        {'define_key': (['section'], 'varval2',
-                                        'value2', Define.append)},
-                        {'define_key': (['section'], 'varval3',
-                                        'value3', Define.remove)},
+                        {'define_key': ('varval1', 'value1', Define.assign)},
+                        {'define_key': ('varval2', 'value2', Define.append)},
+                        {'define_key': ('varval3', 'value3', Define.remove)},
                         ]
 
         parse_result = list(ini_parser.parse(input_text))
@@ -60,16 +55,12 @@ class TestCalculateIni:
                       "varval1 = value1\n")
 
         parsed_lines = [{'start_section': (['section', 'sub'],)},
-                        {'define_key': (['section', 'sub'],
-                                        'varval1', 'value1', Define.assign)},
-                        {'define_key': (['section', 'sub'],
-                                        'varval2', 'value2', Define.assign)},
+                        {'define_key': ('varval1', 'value1', Define.assign)},
+                        {'define_key': ('varval2', 'value2', Define.assign)},
                         {'start_section': (['section', 'sub2'],)},
-                        {'define_key': (['section', 'sub2'],
-                                        'varval1', 'value1', Define.assign)},
+                        {'define_key': ('varval1', 'value1', Define.assign)},
                         {'start_section': (['section2'],)},
-                        {'define_key': (['section2'], 'varval1',
-                                        'value1', Define.assign)}]
+                        {'define_key': ('varval1', 'value1', Define.assign)}]
 
         parse_result = list(ini_parser.parse(input_text))
         for parsed_line, result_line in zip(parsed_lines, parse_result):
@@ -92,10 +83,8 @@ class TestCalculateIni:
                       "[section][][sub][]\n")
 
         parsed_lines = [{'start_section': (['section', 'sub2'],)},
-                        {'define_key': (['section', 'sub2'],
-                                        'varval1', 'value1', Define.assign)},
-                        {'define_key': (['section', 'sub2'],
-                                        'varval4', 'value4', Define.assign)},
+                        {'define_key': ('varval1', 'value1', Define.assign)},
+                        {'define_key': ('varval4', 'value4', Define.assign)},
                         {'clear_section': (['section'],)}
                         ]
 

tests/variables/test_variables.py

@@ -1,15 +1,22 @@
+import os
+import shutil
 import pytest
-from calculate.vars.alt_datavars import NamespaceNode, VariableNode,\
+from calculate.variables.datavars import NamespaceNode, VariableNode,\
                                          Namespace, Variable, Dependence,\
                                          CyclicVariableError, HashType,\
-                                        StringType, IntegerType, VariableType,\
-                                        VariableError, TableType, BooleanType,\
-                                        VariableTypeError, FloatType, ListType
-from calculate.vars.alt_vars_loader import NamespaceIniFiller, VariableLoader
+                                         StringType, IntegerType,\
+                                         VariableType, VariableError,\
+                                         TableType, BooleanType,\
+                                         VariableTypeError, FloatType,\
+                                         ListType
+from calculate.variables.loader import NamespaceIniFiller, Datavars
 from calculate.utils.files import stderr_devnull
 
 
-@pytest.mark.alt_vars
+TESTFILES_PATH = os.path.join(os.getcwd(), 'tests/variables/testfiles')
+
+
+@pytest.mark.vars
 class TestNamespace:
     # Сначала тестируем классы и методы необходимые для построения дерева
     # переменных и пространств имен.
@@ -364,7 +371,7 @@ class TestNamespace:
         Namespace.reset()
 
         with Namespace('namespace_1'):
-            Variable('var_1', source='value_1', type=StringType, readonly=True)
+            Variable('var_1', source='value_1', type=StringType.readonly)
 
         with Namespace('namespace_1'):
             with pytest.raises(VariableError):
@@ -520,6 +527,47 @@ class TestNamespace:
         assert datavars.namespace_1.var_4.key_2 == 'other_value'
         assert datavars.namespace_1.var_4.key_3 == 'another_value'
 
+    def test_if_hash_variable_is_created_as_not_fixed_and_then_changed_using_dictionary_with_a_new_key__the_hash_adds_a_new_key_to_the_first_hash(self):
+        Namespace.reset()
+        datavars = Namespace.datavars
+
+        with Namespace('namespace_1'):
+            Variable('var_1', type=HashType, source={'key_1': 'value_1',
+                                                     'key_2': 'value_2'})
+
+        assert datavars.namespace_1.var_1.key_1 == 'value_1'
+        assert datavars.namespace_1.var_1.key_2 == 'value_2'
+
+        with Namespace('namespace_1'):
+            Variable('var_1', source={'key_1': 'another_value',
+                                      'key_2': 'other_value',
+                                      'key_3': 'new_value'})
+
+        assert datavars.namespace_1.var_1.key_1 == 'another_value'
+        assert datavars.namespace_1.var_1.key_2 == 'other_value'
+        assert datavars.namespace_1.var_1.key_3 == 'new_value'
+
+    def test_if_hash_variable_is_created_as_fixed_and_then_changed_using_dictionary_with_a_new_key__the_hash_raises_the_VariableError_exception(self):
+        Namespace.reset()
+        datavars = Namespace.datavars
+
+        with Namespace('namespace_1'):
+            Variable('var_1', type=HashType.fixed, source={'key_1': 'value_1',
+                                                           'key_2': 'value_2'})
+
+        assert datavars.namespace_1.var_1.key_1 == 'value_1'
+        assert datavars.namespace_1.var_1.key_2 == 'value_2'
+
+        with Namespace('namespace_1'):
+            Variable('var_1', source={'key_1': 'another_value',
+                                      'key_2': 'other_value',
+                                      'key_3': 'new_value'})
+
+        assert datavars.namespace_1['var_1'].fixed
+
+        with pytest.raises(VariableError):
+            datavars.namespace_1.var_1.key_1
+
     def test_if_variable_is_created_with_dependence_and_one_of_arguments_of_a_depend_function_is_whole_hash__the_variable_will_set_this_argument_as_dictionary_of_the_whole_hash_in_a_depend_function(self):
         Namespace.reset()
         datavars = Namespace.datavars
@@ -568,7 +616,7 @@ class TestNamespace:
         datavars = Namespace.datavars
 
         with Namespace('main'):
-            Variable('chroot', source='/', type=StringType, readonly=True)
+            Variable('chroot', source='/', type=StringType.readonly)
 
         with Namespace('os'):
             def source_function(chroot_path):
@@ -901,22 +949,33 @@ value = another_value
              {'name': 'common_name', 'value': 'another_value'},
              {'name': 'name_3', 'value': 'value_3'}]
 
-    def test_loader(self):
-        Namespace.reset()
-        loader = VariableLoader()
-        datavars = loader.load_variables('tests/vars/testfiles/variables_0')
+    def test_if_a_Datavars_object_is_created_with_path_to_the_variables_without_any_Dependencies_and_then_used_to_get_access_to_the_some_variables_from__the_datavars_object_dynamically_loads_variables_and_retruns_necessary_variables(self):
+        datavars = Datavars(
+                        variables_path='tests/variables/testfiles/variables_0',
+                        repository_map={})
+
         assert datavars.os.ns.var_1 == 'value_1'
         assert datavars.os.ns.var_2 == 2
+        assert 'main' not in datavars.root
 
         assert datavars.main.strange_variable == 'weird_value'
         assert datavars.main.plain_variable is True
+        assert 'main' in datavars.root
 
-    def test_loader_2(self):
-        Namespace.reset()
-        loader = VariableLoader()
-        datavars = loader.load_variables('tests/vars/testfiles/variables_1')
+    def test_if_a_Datavars_object_is_created_with_path_to_the_variables_with_some_Dependencies_and_then_used_to_get_access_to_the_some_variables_from__the_datavars_object_dynamically_loads_variables_and_retruns_necessary_variables(self):
+        datavars = Datavars(
+                        variables_path='tests/variables/testfiles/variables_1',
+                        repository_map={})
 
         assert datavars.main.chroot == '/'
+        assert 'os' not in datavars.root
+
+        assert datavars.os.calculate == 'test1 test2'
+        assert 'os' in datavars.root
+
+        assert datavars.level.level_2.vargetter == '/ test'
+        assert 'main' in datavars.root
+
         assert datavars.level.simple == "simple value"
         assert datavars.level.use_local_simple == "Using simple value"
         assert datavars.level.use_full_simple == "Using simple value"
@@ -927,3 +986,52 @@ value = another_value
                                          {"dev": "/dev/sdb",
                                           "type": "flash",
                                           "name": "Transcend 64GB"}]
+
+    def test_if_a_Datavars_object_is_created_with_path_to_the_variables_with_Dependencies_and_then_the_variables_are_changed_using_calculate_ini_files_and_the_datavars_object_used_to_get_access_to_the_some_variables_from__the_datavars_object_dynamically_loads_variables_and_retruns_necessary_variables(self):
+        datavars = Datavars(
+                        variables_path='tests/variables/testfiles/variables_4',
+                        repository_map={})
+
+        assert datavars.main.chroot == '/'
+        assert 'os' not in datavars.root
+
+        assert datavars.level.level_2.vargetter == '/ test'
+        assert 'main' in datavars.root
+
+        assert datavars.level.simple == "simple value"
+
+        datavars._loader.fill_from_custom_ini(os.path.join(TESTFILES_PATH,
+                                                           'calculate_0.ini'))
+
+        assert 'os' in datavars.root
+        assert datavars.level.simple == 'weird value'
+        assert datavars.main.chroot == '/any/other/path'
+        assert datavars.level.level_2.vargetter == '/any/other/path test'
+
+    def test_to_make_testfiles(self):
+        shutil.copytree(os.path.join(TESTFILES_PATH, 'gentoo.backup'),
+                        os.path.join(TESTFILES_PATH, 'gentoo'),
+                        symlinks=True)
+
+    def test_ini_loader(self):
+        repository_map = {'distros': os.path.join(TESTFILES_PATH,
+                                                  "gentoo/repos/distros"),
+                          'calculate': os.path.join(TESTFILES_PATH,
+                                                    "gentoo/repos/calculate"),
+                          'gentoo': os.path.join(TESTFILES_PATH,
+                                                 "gentoo/portage")}
+
+        datavars = Datavars(
+                    variables_path=os.path.join(TESTFILES_PATH, 'variables_2'),
+                    repository_map=repository_map)
+
+    def test_get_repository_map(self):
+        datavars = Datavars(
+                    variables_path=os.path.join(TESTFILES_PATH, 'variables_3'))
+        print('LOADING IS DONE')
+        print('hashvar.value1 = {}'.format(datavars.os.hashvar.value1))
+        print('hashvar.value2 = {}'.format(datavars.os.hashvar.value2))
+        assert False
+
+    def test_for_removing_testfile(self):
+        shutil.rmtree(os.path.join(TESTFILES_PATH, 'gentoo'))

tests/variables/testfiles/calculate_0.ini

@@ -0,0 +1,9 @@
+[main]
+chroot = /any/other/path
+
+[level]
+simple = weird value
+
+[os][linux]
+fullname = full_name
+shortname = SN

tests/variables/testfiles/gentoo.backup/portage/profiles/main/calculate.ini

@@ -0,0 +1,2 @@
+[main]
+chroot = /any/other/path

tests/variables/testfiles/gentoo.backup/repos/calculate/profiles/default/amd64/20/desktop/parent

@@ -0,0 +1,3 @@
+gentoo:main
+..
+../../../desktop

tests/variables/testfiles/gentoo.backup/repos/calculate/profiles/default/amd64/20/parent

@@ -0,0 +1,2 @@
+..
+../../20

tests/variables/testfiles/gentoo.backup/repos/calculate/profiles/default/amd64/parent

@@ -0,0 +1 @@
+..

tests/variables/testfiles/gentoo.backup/repos/calculate/profiles/default/parent

@@ -0,0 +1 @@
+..

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/CLD/amd64/calculate.ini

@@ -0,0 +1,2 @@
+[os][linux]
+arch = amd64

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/CLD/amd64/parent

@@ -0,0 +1,2 @@
+calculate:default/amd64/20/desktop
+..

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/CLD/calculate.ini

@@ -0,0 +1,21 @@
+[os][linux]
+ver = 20
+shortname = CLD
+fullname = Calculate Linux Desktop
+subname = KDE
+
+[os][hashvar]
+value1 = 20
+value2 = 30
+
+[os][tablevar][0]
+dev = /dev/sda1
+mount = swap
+
+[os][tablevar][1]
+dev = /dev/sda2
+mount = /
+
+[os][tablevar][2]
+dev = /dev/sda5
+mount = /var/calculate

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/CLD/parent

@@ -0,0 +1 @@
+..

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/CLDX/amd64/parent

@@ -0,0 +1,2 @@
+calculate:default/amd64/20/desktop
+..

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/CLDX/parent

@@ -0,0 +1 @@
+..

tests/variables/testfiles/gentoo.backup/repos/distros/profiles/calculate.ini

@@ -0,0 +1,3 @@
+[os][linux]
+shortname = Calculate
+test = test

tests/variables/testfiles/variables_0/main/__init__.py

@@ -0,0 +1,6 @@
+from calculate.variables.datavars import Namespace, Variable, StringType,\
+                                         IntegerType, BooleanType
+
+Variable('strange_variable', source='weird_value', type=StringType)
+
+Variable('plain_variable', source=True, type=BooleanType)

tests/variables/testfiles/variables_0/os/__init__.py

@@ -1,4 +1,4 @@
-from calculate.vars.alt_datavars import Namespace, Variable, StringType,\
+from calculate.variables.datavars import Namespace, Variable, StringType,\
                                          IntegerType
 
 with Namespace('ns'):

tests/variables/testfiles/variables_1/level/__init__.py

@@ -1,4 +1,4 @@
-from calculate.vars.alt_datavars import Namespace, Variable, Dependence,\
+from calculate.variables.datavars import Namespace, Variable, Dependence,\
                                          StringType, HashType, TableType,\
                                          ListType, FloatType
 

tests/variables/testfiles/variables_1/level/level_2/__init__.py

@@ -1,4 +1,4 @@
-from calculate.vars.alt_datavars import Variable, StringType, Dependence
+from calculate.variables.datavars import Variable, StringType, Dependence
 
 
 Variable('vargetter', type=StringType,

tests/variables/testfiles/variables_1/main/__init__.py

@@ -0,0 +1,4 @@
+from calculate.variables.datavars import Variable, StringType
+
+
+Variable('chroot', type=StringType.readonly, source='/')

tests/variables/testfiles/variables_1/os/__init__.py

@@ -1,4 +1,4 @@
-from calculate.vars.alt_datavars import Namespace, Variable, Dependence,\
+from calculate.variables.datavars import Namespace, Variable, Dependence,\
                                         StringType, HashType, TableType
 
 with Namespace('linux'):
@@ -27,8 +27,10 @@ Variable('hashvar', source={'value1': 'test1',
                             'value2': 'test2'}, type=HashType)
 
 Variable('calculate', type=StringType,
-         source=lambda hashvar: "{} {}".format(hashvar.value['value1'],
-                                               hashvar.value['value2']))
+         source=Dependence('.hashvar',
+                           depend=lambda hashvar: "{} {}".format(
+                                                     hashvar.value['value1'],
+                                                     hashvar.value['value2'])))
 
 Variable('tablevar', type=TableType, source=[{"dev": "/dev/sdb1",
                                               "mount": "/"},

tests/variables/testfiles/variables_2/main/__init__.py

@@ -0,0 +1,4 @@
+from calculate.variables.datavars import Variable, StringType
+
+
+Variable('chroot', type=StringType, source='/')

tests/variables/testfiles/variables_2/os/__init__.py

@@ -0,0 +1,38 @@
+from calculate.variables.datavars import Namespace, Variable, Dependence,\
+                                        StringType, HashType, TableType
+
+with Namespace('linux'):
+    Variable('shortname', source='', type=StringType)
+
+    Variable('ver', source='', type=StringType)
+
+    Variable('fullname', source='', type=StringType)
+
+    Variable('subname', source='', type=StringType)
+
+    Variable('arch', source='', type=StringType)
+
+    Variable('test', source='', type=StringType)
+
+    def get_title(subname, fullname, ver):
+        if subname.value:
+            return '{} {} {}'.format(fullname.value, subname.value, ver.value)
+        else:
+            return '{} {}'.format(fullname.value, ver.value)
+    Variable('title', type=StringType,
+             source=Dependence('.subname', '.fullname', '.ver',
+                               depend=get_title))
+
+Variable('hashvar', source={'value1': 'test1',
+                            'value2': 'test2'}, type=HashType)
+
+Variable('calculate', type=StringType,
+         source=Dependence('.hashvar',
+                           depend=lambda hashvar: "{} {}".format(
+                                                     hashvar.value['value1'],
+                                                     hashvar.value['value2'])))
+
+Variable('tablevar', type=TableType, source=[{"dev": "/dev/sdb1",
+                                              "mount": "/"},
+                                             {"dev": "/dev/sdb2",
+                                              "mount": "/var/calculate"}])

tests/variables/testfiles/variables_2/os/gentoo/__init__.py

@@ -0,0 +1,57 @@
+import os
+from calculate.variables.datavars import Variable, Namespace, Dependence,\
+                                         StringType, TableType
+'''
+gentoo:
+      make_profile -> string
+      profile:
+          path -> string
+          name -> string
+      repositories[*]{name, path} -> table
+      config -> undefined
+'''
+
+TESTFILES_PATH = os.path.join(os.getcwd(), 'tests/variables/testfiles')
+
+# Путь до файла, указывающего на активный профиль
+Variable('make_profile', type=StringType, source='/etc/portage/make.profile')
+
+# Параметры текущего профиля.
+with Namespace('profile'):
+    # Абсолютный путь до профиля
+    Variable('path', type=StringType,
+             source=os.path.join(TESTFILES_PATH,
+                                 "gentoo/repos/distros/profiles/CLD/amd64"))
+
+    def get_profile_name(path, repositories):
+        profile_path = path.value
+        if not profile_path:
+            return ""
+
+        for repository in repositories.value:
+            repository_path = repository['path']
+            repository_name = repository['name']
+            remove_part = os.path.normpath(os.path.join(repository_path,
+                                                        "profiles"))
+            if profile_path.startswith(remove_part):
+                return "{}:{}".format(repository_name,
+                                      profile_path[len(remove_part) + 1:])
+        return profile_path
+    # Название профиля
+    Variable('name', type=StringType,
+             source=Dependence('.path', '..repositories',
+                               depend=get_profile_name))
+
+# Информация о репозиториях
+# name: имя репозитория
+# path: полный путь до репозитория
+Variable('repositories', type=TableType,
+         source=[{'name': 'distros',
+                  'path': os.path.join(TESTFILES_PATH,
+                                       "gentoo/repos/distros")},
+                 {'name': 'calculate',
+                  'path': os.path.join(TESTFILES_PATH,
+                                       "gentoo/repos/calculate")},
+                 {'name': 'gentoo',
+                  'path': os.path.join(TESTFILES_PATH,
+                                       "gentoo/portage")}])

tests/variables/testfiles/variables_3/main/__init__.py

@@ -0,0 +1,4 @@
+from calculate.variables.datavars import Variable, StringType
+
+
+Variable('chroot', type=StringType, source='/')

tests/variables/testfiles/variables_3/os/__init__.py

@@ -0,0 +1,38 @@
+from calculate.variables.datavars import Namespace, Variable, Dependence,\
+                                        StringType, HashType, TableType
+
+with Namespace('linux'):
+    Variable('shortname', source='', type=StringType)
+
+    Variable('ver', source='', type=StringType)
+
+    Variable('fullname', source='', type=StringType)
+
+    Variable('subname', source='', type=StringType)
+
+    Variable('arch', source='', type=StringType)
+
+    Variable('test', source='', type=StringType)
+
+    def get_title(subname, fullname, ver):
+        if subname.value:
+            return '{} {} {}'.format(fullname.value, subname.value, ver.value)
+        else:
+            return '{} {}'.format(fullname.value, ver.value)
+    Variable('title', type=StringType,
+             source=Dependence('.subname', '.fullname', '.ver',
+                               depend=get_title))
+
+Variable('hashvar', source={'value1': 'test1',
+                            'value2': 'test2'}, type=HashType)
+
+Variable('calculate', type=StringType,
+         source=Dependence('.hashvar',
+                           depend=lambda hashvar: "{} {}".format(
+                                                     hashvar.value['value1'],
+                                                     hashvar.value['value2'])))
+
+Variable('tablevar', type=TableType, source=[{"dev": "/dev/sdb1",
+                                              "mount": "/"},
+                                             {"dev": "/dev/sdb2",
+                                              "mount": "/var/calculate"}])

tests/variables/testfiles/variables_3/os/gentoo/__init__.py

@@ -0,0 +1,57 @@
+import os
+from calculate.variables.datavars import Variable, Namespace, Dependence,\
+                                         StringType, TableType
+'''
+gentoo:
+      make_profile -> string
+      profile:
+          path -> string
+          name -> string
+      repositories[*]{name, path} -> table
+      config -> undefined
+'''
+
+TESTFILES_PATH = os.path.join(os.getcwd(), 'tests/variables/testfiles')
+
+# Путь до файла, указывающего на активный профиль
+Variable('make_profile', type=StringType, source='/etc/portage/make.profile')
+
+# Параметры текущего профиля.
+with Namespace('profile'):
+    # Абсолютный путь до профиля
+    Variable('path', type=StringType,
+             source=os.path.join(TESTFILES_PATH,
+                                 "gentoo/repos/distros/profiles/CLD/amd64"))
+
+    def get_profile_name(path, repositories):
+        profile_path = path.value
+        if not profile_path:
+            return ""
+
+        for repository in repositories.value:
+            repository_path = repository['path']
+            repository_name = repository['name']
+            remove_part = os.path.normpath(os.path.join(repository_path,
+                                                        "profiles"))
+            if profile_path.startswith(remove_part):
+                return "{}:{}".format(repository_name,
+                                      profile_path[len(remove_part) + 1:])
+        return profile_path
+    # Название профиля
+    Variable('name', type=StringType,
+             source=Dependence('.path', '..repositories',
+                               depend=get_profile_name))
+
+# Информация о репозиториях
+# name: имя репозитория
+# path: полный путь до репозитория
+Variable('repositories', type=TableType,
+         source=[{'name': 'distros',
+                  'path': os.path.join(TESTFILES_PATH,
+                                       "gentoo/repos/distros")},
+                 {'name': 'calculate',
+                  'path': os.path.join(TESTFILES_PATH,
+                                       "gentoo/repos/calculate")},
+                 {'name': 'gentoo',
+                  'path': os.path.join(TESTFILES_PATH,
+                                       "gentoo/portage")}])

tests/variables/testfiles/variables_4/level/__init__.py

@@ -0,0 +1,62 @@
+from calculate.variables.datavars import Namespace, Variable, Dependence,\
+                                         StringType, HashType, TableType,\
+                                         ListType, FloatType
+
+
+Variable('simple', type=StringType, source='simple value')
+
+Variable('use_local_simple', type=StringType,
+         source=Dependence('.simple',
+                           depend=lambda simple: 'Using {}'.format(
+                                                                simple.value)))
+
+Variable('use_full_simple', type=StringType,
+         source=Dependence('level.simple',
+                           depend=lambda simple: 'Using {}'.format(
+                                                                simple.value)))
+
+Variable('disks', type=ListType,
+         source=["/dev/sda1", "/dev/sda2", "/dev/sda3"])
+
+Variable('version', type=FloatType, source='1.0')
+
+Variable('my_shortname', type=StringType, source='CLD')
+
+Variable('linux', type=HashType,
+         source=Dependence('.version', '.my_shortname',
+                           depend=lambda version, my_shortname:
+                           {'version': version.value,
+                            'shortname': my_shortname.value}))
+
+Variable('shortname_test', type=StringType,
+         source=Dependence('.linux.shortname',
+                           depend=lambda shortname: '{} test'.format(
+                                                             shortname.value)))
+
+Variable('device_list', type=ListType,
+         source=["/dev/sda", "/dev/sdb"])
+
+
+def get_device_table(device_list):
+    map_data = {'/dev/sda': ["hdd", "Samsung SSD"],
+                '/dev/sdb': ["flash", "Transcend 64GB"],
+                '/dev/sdc': ["usbhdd", "WD 1TB"]}
+    default_value = ["hdd", "Unknown"]
+    print('device_list = {}'.format(device_list.value))
+    return [{"dev": device,
+             "type": map_data.get(device, default_value)[0],
+             "name": map_data.get(device, default_value)[1]}
+            for device in device_list.value]
+
+
+Variable('device', type=TableType, source=Dependence('.device_list',
+                                                     depend=get_device_table))
+
+Variable('device_child', type=StringType,
+         source=Dependence('.device',
+                           depend=lambda device: device.value[0]['type']))
+
+with Namespace('level_3'):
+    Variable('my_var_1', type=StringType, source='testing')
+
+    Variable('my_var_2', type=StringType, source='testing_2')

tests/variables/testfiles/variables_4/level/level_2/__init__.py

@@ -0,0 +1,7 @@
+from calculate.variables.datavars import Variable, StringType, Dependence
+
+
+Variable('vargetter', type=StringType,
+         source=Dependence('main.chroot',
+                           depend=lambda chroot:
+                           '{} test'.format(chroot.value)))

tests/variables/testfiles/variables_4/main/__init__.py

@@ -0,0 +1,4 @@
+from calculate.variables.datavars import Variable, StringType
+
+
+Variable('chroot', type=StringType, source='/')

tests/variables/testfiles/variables_4/os/__init__.py

@@ -0,0 +1,38 @@
+from calculate.variables.datavars import Namespace, Variable, Dependence,\
+                                        StringType, HashType, TableType
+
+with Namespace('linux'):
+    Variable('shortname', source='', type=StringType)
+
+    Variable('ver', source='', type=StringType)
+
+    Variable('fullname', source='', type=StringType)
+
+    Variable('subname', source='', type=StringType)
+
+    Variable('arch', source='', type=StringType)
+
+    Variable('test', source='', type=StringType)
+
+    def get_title(subname, fullname, ver):
+        if subname.value:
+            return '{} {} {}'.format(fullname.value, subname.value, ver.value)
+        else:
+            return '{} {}'.format(fullname.value, ver.value)
+    Variable('title', type=StringType,
+             source=Dependence('.subname', '.fullname', '.ver',
+                               depend=get_title))
+
+Variable('hashvar', source={'value1': 'test1',
+                            'value2': 'test2'}, type=HashType)
+
+Variable('calculate', type=StringType,
+         source=Dependence('.hashvar',
+                           depend=lambda hashvar: "{} {}".format(
+                                                     hashvar.value['value1'],
+                                                     hashvar.value['value2'])))
+
+Variable('tablevar', type=TableType, source=[{"dev": "/dev/sdb1",
+                                              "mount": "/"},
+                                             {"dev": "/dev/sdb2",
+                                              "mount": "/var/calculate"}])

tests/vars/testfiles/variables_0/main/__init__.py

@@ -1,6 +0,0 @@
-from calculate.vars.alt_datavars import Namespace, Variable, StringType,\
-                                        IntegerType, BooleanType
-
-Variable('strange_variable', source='weird_value', type=StringType)
-
-Variable('plain_variable', source=True, type=BooleanType)

tests/vars/testfiles/variables_1/main/__init__.py

@@ -1,5 +0,0 @@
-from calculate.vars.alt_datavars import Variable, StringType
-
-
-Variable('chroot', type=StringType, source='/', readonly=True)
-print('chroot really created')