From 601c3fc54d052cf33855047836cdd54a59743757 Mon Sep 17 00:00:00 2001
From: Emmanuel Garette <egarette@cadoles.com>
Date: Fri, 7 Dec 2018 23:32:28 +0100
Subject: [PATCH] support new special property demoting_error_warning

---
 tiramisu/error.py         | 17 ++++++++++++++---
 tiramisu/option/option.py | 30 +++++++++++-------------------
 tiramisu/setting.py       |  3 +++
 3 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/tiramisu/error.py b/tiramisu/error.py
index 50a3b47..1b2b723 100644
--- a/tiramisu/error.py
+++ b/tiramisu/error.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 # ____________________________________________________________
 "user defined exceptions"
+import weakref
 from .i18n import _
 
 
@@ -180,21 +181,31 @@ class ValueWarning(UserWarning):
     >>> print(str(w[0].message))
     invalid value val for option s: pouet
     """
-    def __init__(self, msg, opt):
+    def __init__(self,
+                 msg,
+                 opt):
         self.opt = opt
+        self.value_error = msg
         super(ValueWarning, self).__init__(msg)
 
 
+class ValueErrorWarning(ValueWarning):
+    def __init__(self,
+                 value_error):
+        super(ValueWarning, self).__init__(value_error, value_error.opt())
+
+
 class ValueOptionError(ValueError):
     def __init__(self,
                  val,
                  display_type,
-                 display_name,
+                 opt,
                  err_msg):
         self.prefix = _('"{0}" is an invalid {1} for "{2}"'
                         '').format(val,
                                    display_type,
-                                   display_name)
+                                   opt.impl_get_display_name())
+        self.opt = weakref.ref(opt)
         self.err_msg = err_msg
 
     def __str__(self):
diff --git a/tiramisu/option/option.py b/tiramisu/option/option.py
index b10f39d..915857d 100644
--- a/tiramisu/option/option.py
+++ b/tiramisu/option/option.py
@@ -27,7 +27,7 @@ from .baseoption import BaseOption, submulti, STATIC_TUPLE
 from ..i18n import _
 from ..setting import log, undefined, OptionBag, Undefined
 from ..autolib import carry_out_calculation
-from ..error import (ConfigError, ValueWarning, PropertiesOptionError,
+from ..error import (ConfigError, ValueWarning, ValueErrorWarning, PropertiesOptionError,
                      ValueOptionError, display_list)
 from ..function import Params, ParamValue
 from .syndynoption import SynDynOption
@@ -346,10 +346,16 @@ class Option(BaseOption):
                                        check_error,
                                        is_warnings_only)
         except ValueError as err:
-            raise ValueOptionError(val,
-                                   self._display_name,
-                                   option_bag.ori_option.impl_get_display_name(),
-                                   '{0}'.format(err))
+            val_err = ValueOptionError(val,
+                                       self._display_name,
+                                       option_bag.ori_option,
+                                       '{0}'.format(err))
+            if 'demoting_error' in config_bag.properties:
+                warnings.warn_explicit(val_err,
+                                       ValueErrorWarning,
+                                       self.__class__.__name__, 0)
+            else:
+                raise val_err
 
     def _validate_calculator(self,
                             callback: Callable,
@@ -715,17 +721,3 @@ class Option(BaseOption):
         return SynDynOption(self,
                             rootpath,
                             suffix)
-
-
-class RegexpOption(Option):
-    __slots__ = tuple()
-
-    def _validate(self,
-                  value: Any,
-                  option_bag: OptionBag,
-                  current_opt: BaseOption=Undefined) -> None:
-        if not isinstance(value, str):
-            raise ValueError(_('invalid string'))
-        match = self._regexp.search(value)
-        if not match:
-            raise ValueError()
diff --git a/tiramisu/setting.py b/tiramisu/setting.py
index 5a05ee6..5a4185e 100644
--- a/tiramisu/setting.py
+++ b/tiramisu/setting.py
@@ -83,6 +83,9 @@ validator
 
 warnings
     display warnings during validation
+
+demoting_error_warning
+    all value errors are convert to warning (ValueErrorWarning)
 """
 default_properties = ('cache', 'validator', 'warnings')