can use tiramisu-json-api without tiramisu

tiramisu_json_api/api.py

@@ -3,12 +3,9 @@ import warnings
 import re
 
 
-from tiramisu.error import APIError, ValueWarning, ValueOptionError, ValueErrorWarning, PropertiesOptionError
-from tiramisu.setting import undefined
-
-# FIXME
-def _(val):
-    return val
+from .error import APIError, ValueWarning, ValueOptionError, ValueErrorWarning, PropertiesOptionError
+from .setting import undefined
+from .i18n import _
 
 
 class Option:

tiramisu_json_api/error.py

@@ -0,0 +1,171 @@
+try:
+    from tiramisu.error import APIError, ValueWarning, ValueOptionError, ValueErrorWarning, PropertiesOptionError
+except ModuleNotFoundError:
+    import weakref
+    from .i18n import _
+
+    def display_list(lst, separator='and', add_quote=False):
+        if separator == 'and':
+            separator = _('and')
+        elif separator == 'or':
+            separator = _('or')
+        if isinstance(lst, tuple) or isinstance(lst, frozenset):
+            lst = list(lst)
+        if len(lst) == 1:
+            ret = lst[0]
+            if not isinstance(ret, str):
+                ret = str(ret)
+            if add_quote:
+                ret = '"{}"'.format(ret)
+            return ret
+        else:
+            lst.sort()
+            lst_ = []
+            for l in lst[:-1]:
+                if not isinstance(l, str):
+                    l = str(l)
+                if add_quote:
+                    l = '"{}"'.format(l)
+                lst_.append(_(l))
+            last = lst[-1]
+            if not isinstance(last, str):
+                last = str(_(last))
+            if add_quote:
+                last = '"{}"'.format(last)
+            return ', '.join(lst_) + _(' {} ').format(separator) + '{}'.format(last)
+
+    class APIError(Exception):
+        pass
+
+    # Warning
+    class ValueWarning(UserWarning):
+        """Option could warn user and not raise ValueError.
+
+        Example:
+
+        >>> import warnings
+        >>> from tiramisu.error import ValueWarning
+        >>> from tiramisu.option import StrOption, OptionDescription
+        >>> from tiramisu import Config
+        >>> warnings.simplefilter("always", ValueWarning)
+        >>> def a(val):
+        ...  raise ValueError('pouet')
+        ...
+        >>> s=StrOption('s', '', validator=a, warnings_only=True)
+        >>> o=OptionDescription('o', '', [s])
+        >>> c=Config(o)
+        >>> c.s = 'val'
+        StrOption:0: ValueWarning: invalid value val for option s: pouet
+        >>> with warnings.catch_warnings(record=True) as w:
+        ...     c.s = 'val'
+        ...
+        >>> w[0].message.opt() == s
+        True
+        >>> print(str(w[0].message))
+        invalid value val for option s: pouet
+        """
+        def __init__(self,
+                     msg,
+                     opt):
+            self.opt = opt
+            self.value_error = msg
+            super(ValueWarning, self).__init__(msg)
+
+    class ValueOptionError(ValueError):
+        def __init__(self,
+                     val,
+                     display_type,
+                     opt,
+                     err_msg):
+            self.prefix = _('"{0}" is an invalid {1} for "{2}"'
+                            '').format(val,
+                                       display_type,
+                                       opt.impl_get_display_name())
+            self.opt = weakref.ref(opt)
+            self.err_msg = err_msg
+
+        def __str__(self):
+            msg = self.prefix
+            if self.err_msg:
+                if msg:
+                    msg += ', {}'.format(self.err_msg)
+                else:
+                    msg = self.err_msg
+            if not msg:
+                msg = _('invalid value')
+            return msg
+
+    class ValueErrorWarning(ValueWarning):
+        def __init__(self,
+                     value_error):
+            super(ValueErrorWarning, self).__init__(value_error, value_error.opt)
+
+    # Exceptions for an Option
+    class PropertiesOptionError(AttributeError):
+        "attempt to access to an option with a property that is not allowed"
+        def __init__(self,
+                     option_bag,
+                     proptype,
+                     settings,
+                     opt_type=None,
+                     requires=None,
+                     name=None,
+                     orig_opt=None):
+            if opt_type:
+                self._opt_type = opt_type
+                self._requires = requires
+                self._name = name
+                self._orig_opt = orig_opt
+            else:
+                if option_bag.option.impl_is_optiondescription():
+                    self._opt_type = 'optiondescription'
+                else:
+                    self._opt_type = 'option'
+                self._requires = option_bag.option.impl_getrequires()
+                self._name = option_bag.option.impl_get_display_name()
+                self._orig_opt = None
+            self._option_bag = option_bag
+            self.proptype = proptype
+            self._settings = settings
+            self.msg = None
+            super(PropertiesOptionError, self).__init__(None)
+
+        def set_orig_opt(self, opt):
+            self._orig_opt = opt
+
+        def __str__(self):
+            # this part is a bit slow, so only execute when display
+            if self.msg:
+                return self.msg
+            req = self._settings.apply_requires(self._option_bag,
+                                                True)
+            # if req != {} or self._orig_opt is not None:
+            if req != {}:
+                only_one = len(req) == 1
+                msg = []
+                for action, msg_ in req.items():
+                    msg.append('"{0}" ({1})'.format(action, display_list(msg_)))
+                msg = display_list(msg)
+            else:
+                only_one = len(self.proptype) == 1
+                msg = display_list(list(self.proptype), add_quote=True)
+            if only_one:
+                prop_msg = _('property')
+            else:
+                prop_msg = _('properties')
+            if self._orig_opt:
+                self.msg = str(_('cannot access to {0} "{1}" because "{2}" has {3} {4}'
+                                 '').format(self._opt_type,
+                                            self._orig_opt.impl_get_display_name(),
+                                            self._name,
+                                            prop_msg,
+                                            msg))
+            else:
+                self.msg = str(_('cannot access to {0} "{1}" because has {2} {3}'
+                                 '').format(self._opt_type,
+                                            self._name,
+                                            prop_msg,
+                                            msg))
+            del self._requires, self._opt_type, self._name, self._option_bag
+            del self._settings, self._orig_opt
+            return self.msg

tiramisu_json_api/i18n.py

@@ -0,0 +1,6 @@
+try:
+    from tiramisu.i18n import _
+except ModuleNotFoundError:
+    # FIXME
+    def _(val):
+        return val

tiramisu_json_api/setting.py

@@ -0,0 +1,11 @@
+try:
+    from tiramisu.setting import undefined
+except ModuleNotFoundError:
+    class Undefined(object):
+        def __str__(self):
+            return 'Undefined'
+
+        __repr__ = __str__
+
+
+    undefined = Undefined()