Adds ability to disable ieee warnings

user_guide.md

@@ -1,7 +1,7 @@
 # VUnit User Guide
 
 ## Introduction
-The idea in VUnit is to have a single point of entry for compiling and running all tests within a VHDL project. Tests do not need to be manually added to some list as they are automatically detected. There is no need for maintaining a list of files in compile order or manually re-compile selected files after they have been edited as VUnit automatically determines the compile order as well as which files to incrementally re-compile. This is achieved by having a `run.py` file for each project where libraries are defined into which files are added using the VUnit Python interface. The `run.py` file then acts as a command line utility for compiling and running tests within the VHDL project. 
+The idea in VUnit is to have a single point of entry for compiling and running all tests within a VHDL project. Tests do not need to be manually added to some list as they are automatically detected. There is no need for maintaining a list of files in compile order or manually re-compile selected files after they have been edited as VUnit automatically determines the compile order as well as which files to incrementally re-compile. This is achieved by having a `run.py` file for each project where libraries are defined into which files are added using the VUnit Python interface. The `run.py` file then acts as a command line utility for compiling and running tests within the VHDL project.
 
 ## Python Interface
 
@@ -221,3 +221,22 @@ vunit_run
 It is also possible to automatically run the test case in the gui while logging all signals and variables recursively using the `--gui=run` flag.
 After simulation the user can manually add objects of interest to the waveform viewer without re-running since everything has been logged.
 When running large designs this mode can be quite slow and it might be better to just do `--gui=load` and manually add a few signals of interest.
+
+## Disabling warnings from IEEE packages
+Warnings from IEEE packages can be disabled in `run.py`:
+```python
+# They can be lobally disabled...
+vu.disable_ieee_warnings()
+
+# ... or just disabled for a library
+lib = vu.lib("lib")
+lib.disable_ieee_warnings()
+
+# ... or just disabled for a test bench
+ent = lib.entity("ent")
+ent.disable_ieee_warnings()
+
+# ... or just disabled for a test case
+test = ent.test("test")
+test.disable_ieee_warnings()
+```

vunit/modelsim_interface.py

@@ -247,17 +247,25 @@ def _create_load_function(self,  # pylint: disable=too-many-arguments
         return tcl
 
     @staticmethod
-    def _create_run_function(fail_on_warning=False):
+    def _create_run_function(fail_on_warning=False, disable_ieee_warnings=False):
         """
         Create the vunit_run function to run the test bench
         """
+        if disable_ieee_warnings:
+            no_warnings = 1
+        else:
+            no_warnings = 0
         return """
 proc vunit_run {} {
     global BreakOnAssertion
-
-    # Break on error
     set BreakOnAssertion %i
 
+    global NumericStdNoWarnings
+    set NumericStdNoWarnings %i
+
+    global StdArithNoWarnings
+    set StdArithNoWarnings %i
+
     proc on_break {} {
         resume
     }
@@ -294,11 +302,12 @@ def _create_run_function(fail_on_warning=False):
     }
     return $failed
 }
-""" % (1 if fail_on_warning else 2)
+""" % (1 if fail_on_warning else 2, no_warnings, no_warnings)
 
     def _create_common_script(self,   # pylint: disable=too-many-arguments
                               library_name, entity_name, architecture_name,
-                              generics, pli, fail_on_warning, output_path):
+                              generics, pli, fail_on_warning, disable_ieee_warnings,
+                              output_path):
         """
         Create tcl script with functions common to interactive and batch modes
         """
@@ -315,7 +324,7 @@ def _create_common_script(self,   # pylint: disable=too-many-arguments
 }
 """
         tcl += self._create_load_function(library_name, entity_name, architecture_name, generics, pli, output_path)
-        tcl += self._create_run_function(fail_on_warning)
+        tcl += self._create_run_function(fail_on_warning, disable_ieee_warnings)
         return tcl
 
     @staticmethod
@@ -429,7 +438,8 @@ def _run_persistent(self, common_file_name, load_only=False):
 
     def simulate(self, output_path,  # pylint: disable=too-many-arguments
                  library_name, entity_name, architecture_name=None,
-                 generics=None, pli=None, load_only=None, fail_on_warning=False):
+                 generics=None, pli=None, load_only=None, fail_on_warning=False,
+                 disable_ieee_warnings=False):
         """
         Run a test bench
         load_only -- Only load the design performing elaboration without simulating
@@ -445,6 +455,7 @@ def simulate(self, output_path,  # pylint: disable=too-many-arguments
         write_file(common_file_name,
                    self._create_common_script(library_name, entity_name, architecture_name, generics, pli,
                                               fail_on_warning=fail_on_warning,
+                                              disable_ieee_warnings=disable_ieee_warnings,
                                               output_path=msim_output_path))
         write_file(gui_load_file_name,
                    self._create_gui_load_script(common_file_name))

vunit/test/acceptance/artificial/run.py

@@ -46,5 +46,5 @@ def post_check(output_path):
                         post_check=post_check)
 
 configure_tb_with_generic_config(ui)
-
+lib.entity("tb_ieee_warning").disable_ieee_warnings()
 ui.main()

vunit/test/acceptance/artificial/vhdl/tb_ieee_warning.vhd

@@ -0,0 +1,30 @@
+-- This Source Code Form is subject to the terms of the Mozilla Public
+-- License, v. 2.0. If a copy of the MPL was not distributed with this file,
+-- You can obtain one at http://mozilla.org/MPL/2.0/.
+--
+-- Copyright (c) 2014-2015, Lars Asplund lars.anders.asplund@gmail.com
+
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+library vunit_lib;
+context vunit_lib.vunit_context;
+
+entity tb_ieee_warning is
+  generic (runner_cfg : runner_cfg_t);
+end entity;
+
+architecture vunit_test_bench of tb_ieee_warning is
+begin
+  test_runner : process
+    variable undefined : unsigned(15 downto 0);
+  begin
+    test_runner_setup(runner, runner_cfg);
+    report integer'image(to_integer(undefined));
+    test_runner_cleanup(runner);
+    wait;
+  end process;
+end architecture;
+
+-- vunit_pragma fail_on_warning

vunit/test/acceptance/test_artificial.py

@@ -172,4 +172,6 @@ def check(self, run_file, args=None, persistent_sim=True, clean=True, exit_code=
     ("passed", "lib.tb_with_generic_config.Test 1"),
     ("passed", "lib.tb_with_generic_config.Test 2"),
     ("passed", "lib.tb_with_generic_config.Test 3"),
-    ("passed", "lib.tb_with_generic_config.Test 4"))
+    ("passed", "lib.tb_with_generic_config.Test 4"),
+
+    ("passed", "lib.tb_ieee_warning"))

vunit/test/unit/test_test_configuration.py

@@ -98,16 +98,42 @@ def test_add_config(self):
         self.assertEqual(self.cfg.get_configurations(create_scope("lib", "tb_entity", "configured test")),
                          [Configuration("specific_test_config", dict(global_value="global value"))])
 
+    def test_disable_ieee_warnings(self):
+        lib_scope = create_scope("lib")
+        ent_scope = create_scope("lib", "entity")
+        self.assertEqual(self.cfg.get_configurations(lib_scope),
+                         [Configuration(disable_ieee_warnings=False)])
+
+        self.assertEqual(self.cfg.get_configurations(ent_scope),
+                         [Configuration(disable_ieee_warnings=False)])
+
+        self.cfg.disable_ieee_warnings(ent_scope)
+        self.assertEqual(self.cfg.get_configurations(lib_scope),
+                         [Configuration(disable_ieee_warnings=False)])
+
+        self.assertEqual(self.cfg.get_configurations(ent_scope),
+                         [Configuration(disable_ieee_warnings=True)])
+
+        self.cfg.disable_ieee_warnings(lib_scope)
+        self.assertEqual(self.cfg.get_configurations(lib_scope),
+                         [Configuration(disable_ieee_warnings=True)])
+
+        self.assertEqual(self.cfg.get_configurations(ent_scope),
+                         [Configuration(disable_ieee_warnings=False)])
+
     def test_more_specific_configurations(self):
         self.cfg.set_generic("name", "value", scope=create_scope("lib", "entity3"))
         self.cfg.set_generic("name", "value", scope=create_scope("lib", "entity", "test"))
+        self.cfg.disable_ieee_warnings(scope=create_scope("lib", "entity_ieee", "test"))
         self.cfg.add_config(name="name", generics=dict(), scope=create_scope("lib", "entity2", "test"))
         self.assertEqual(self.cfg.more_specific_configurations(create_scope("lib", "entity")),
                          [create_scope("lib", "entity", "test")])
         self.assertEqual(self.cfg.more_specific_configurations(create_scope("lib", "entity2")),
                          [create_scope("lib", "entity2", "test")])
         self.assertEqual(self.cfg.more_specific_configurations(create_scope("lib", "entity3")),
                          [])
+        self.assertEqual(self.cfg.more_specific_configurations(create_scope("lib", "entity_ieee")),
+                         [create_scope("lib", "entity_ieee", "test")])
 
     @staticmethod
     def write_file(name, contents):

vunit/test_bench.py

@@ -21,6 +21,7 @@ def __init__(self,  # pylint: disable=too-many-arguments
                  generics=None,
                  has_output_path=False,
                  fail_on_warning=False,
+                 disable_ieee_warnings=False,
                  pli=None,
                  elaborate_only=False):
         self._simulator_if = simulator_if
@@ -30,6 +31,7 @@ def __init__(self,  # pylint: disable=too-many-arguments
         self._architecture_name = architecture_name
         self._has_output_path = has_output_path
         self._fail_on_warning = fail_on_warning
+        self._disable_ieee_warnings = disable_ieee_warnings
         self._pli = pli
         self._elaborate_only = elaborate_only
 
@@ -51,5 +53,6 @@ def run(self, output_path, extra_generics=None):
                                            self._architecture_name,
                                            generics,
                                            fail_on_warning=self._fail_on_warning,
+                                           disable_ieee_warnings=self._disable_ieee_warnings,
                                            pli=self._pli,
                                            load_only=self._elaborate_only)

vunit/test_configuration.py

@@ -44,6 +44,7 @@ def __init__(self):
         self._generics = {}
         self._configs = {}
         self._plis = {}
+        self._disable_ieee_warnings = set()
 
     def set_generic(self, name, value, scope=create_scope()):
         """
@@ -59,6 +60,12 @@ def set_pli(self, value, scope=create_scope()):
         """
         self._plis[scope] = value
 
+    def disable_ieee_warnings(self, scope=create_scope()):
+        """
+        Disable ieee warnings within scope
+        """
+        self._disable_ieee_warnings.add(scope)
+
     def add_config(self, scope, name, generics, post_check=None):
         """
         Add a configuration for scope specifying the name of the
@@ -76,16 +83,25 @@ def get_configurations(self, scope):
         global_generics = self._get_generics_for_scope(scope)
         pli = self._get_pli_for_scope(scope)
         configs_for_scope = self._get_configs_for_scope(scope)
+        disable_ieee_warnings = self._ieee_warnings_disabled_in_scope(scope)
 
         configs = []
         for config_name in sorted(configs_for_scope.keys()):
             cfg_generics, post_check = configs_for_scope[config_name]
             generics = global_generics.copy()
             generics.update(cfg_generics)
-            configs.append(Configuration(config_name, generics, post_check, pli))
+            configs.append(Configuration(config_name,
+                                         generics,
+                                         post_check,
+                                         pli,
+                                         disable_ieee_warnings))
 
         if len(configs) == 0:
-            configs = [Configuration("", global_generics.copy(), None, pli)]
+            configs = [Configuration("",
+                                     global_generics.copy(),
+                                     None,
+                                     pli,
+                                     disable_ieee_warnings)]
 
         return configs
 
@@ -121,6 +137,15 @@ def _get_pli_for_scope(self, scope):
             plis = self._plis.get(iter_scope, plis)
         return plis
 
+    def _ieee_warnings_disabled_in_scope(self, scope):
+        """
+        Return true if ieee warnings are disabled within scope
+        """
+        for iter_scope in iter_scopes(scope):
+            if iter_scope in self._disable_ieee_warnings:
+                return True
+        return False
+
     def more_specific_configurations(self, scope):
         """
         Return scopes containing more specific configurations
@@ -136,32 +161,36 @@ def add(scopes):
         add(self._generics)
         add(self._configs)
         add(self._plis)
+        add(self._disable_ieee_warnings)
         return result
 
 
 class Configuration(object):
     """
     Represents a configuration of a test bench
     """
-    def __init__(self,
+    def __init__(self,  # pylint: disable=too-many-arguments
                  name="",
                  generics=None,
                  post_check=None,
-                 pli=None):
+                 pli=None,
+                 disable_ieee_warnings=False):
         self.name = name
         self.generics = generics if generics is not None else {}
         self.post_check = post_check
         self.pli = [] if pli is None else pli
+        self.disable_ieee_warnings = disable_ieee_warnings
 
     def __eq__(self, other):
         return (self.name == other.name and
                 self.generics == other.generics and
                 self.post_check == other.post_check and
-                self.pli == other.pli)
+                self.pli == other.pli,
+                self.disable_ieee_warnings == other.disable_ieee_warnings)
 
     def __repr__(self):
-        return("Configuration(%r, %r, %r, %r)"
-               % (self.name, self.generics, self.post_check, self.pli))
+        return("Configuration(%r, %r, %r, %r, %r)"
+               % (self.name, self.generics, self.post_check, self.pli, self.disable_ieee_warnings))
 
 
 def is_within_scope(scope, other_scope):

vunit/test_scanner.py

@@ -83,6 +83,7 @@ def add_tb_path_generic(generics):
                          architecture_name=architecture_name,
                          entity_name=entity.name,
                          fail_on_warning=fail_on_warning,
+                         disable_ieee_warnings=config.disable_ieee_warnings,
                          has_output_path="output_path" in entity.generic_names,
                          generics=generics,
                          pli=config.pli,

vunit/ui.py

@@ -215,6 +215,12 @@ def set_pli(self, value):
         """
         self._configuration.set_pli(value, scope=create_scope())
 
+    def disable_ieee_warnings(self):
+        """
+        Globally disable ieee warnings
+        """
+        self._configuration.disable_ieee_warnings(scope=create_scope())
+
     def add_source_files(self, pattern, library_name, preprocessors=None):
         """
         Add source files matching wildcard pattern to library
@@ -458,14 +464,21 @@ def __init__(self, library_name, parent, project, configuration):
         self._parent = parent
         self._project = project
         self._configuration = configuration
+        self._scope = create_scope(self._library_name)
 
     def set_generic(self, name, value):
         """ Set generic within library """
-        self._configuration.set_generic(name, value, scope=create_scope(self._library_name))
+        self._configuration.set_generic(name, value, scope=self._scope)
 
     def set_pli(self, value):
         """ Set pli within library """
-        self._configuration.set_pli(value, scope=create_scope(self._library_name))
+        self._configuration.set_pli(value, scope=self._scope)
+
+    def disable_ieee_warnings(self):
+        """
+        Disable ieee warnings within library
+        """
+        self._configuration.disable_ieee_warnings(scope=self._scope)
 
     def add_source_files(self, pattern, preprocessors=None):
         self._parent.add_source_files(pattern, self._library_name, preprocessors)
@@ -520,6 +533,12 @@ def add_config(self, name, generics, post_check=None):
                                 generics=generics,
                                 post_check=post_check)
 
+    def disable_ieee_warnings(self):
+        """
+        Disable ieee warnings within entity
+        """
+        self._config.disable_ieee_warnings(scope=self._scope)
+
     def test(self, test_name):
         """
         Return the test case with test_name
@@ -587,6 +606,12 @@ def set_generic(self, name, value):
         """
         self._config.set_generic(name, value, scope=self._scope)
 
+    def disable_ieee_warnings(self):
+        """
+        Disable ieee warnings for test case
+        """
+        self._config.disable_ieee_warnings(scope=self._scope)
+
 
 def file_type_of(file_name):
     """