decoupling from mathics.builtin.builtins

Author: mmatera

mathics/builtin/__init__.py

@@ -43,7 +43,7 @@
         continue
     modules.append(module)
 
-builtins = []
+_builtins = []
 builtins_by_module = {}
 
 
@@ -75,7 +75,7 @@ def is_builtin(var):
                 # This set the default context for symbols in mathics.builtins
                 if not type(instance).context:
                     type(instance).context = "System`"
-                builtins.append( (instance.get_name(), instance))
+                _builtins.append( (instance.get_name(), instance))
                 builtins_by_module[module.__name__].append(instance)
 
 
@@ -107,14 +107,20 @@ def add_builtins(new_builtins):
             builtins_precedence[name] = builtin.precedence
         if isinstance(builtin, PatternObject):
             pattern_objects[name] = builtin.__class__
-    builtins.update(dict(new_builtins))
+    _builtins.update(dict(new_builtins))
 
 
-new_builtins = builtins
-builtins = {}
+new_builtins = _builtins
+_builtins = {}
 add_builtins(new_builtins)
 
 
+def builtins_dict():
+    return { builtin.get_name() : builtin
+             for modname, builtins in builtins_by_module.items()
+             for builtin in builtins}
+
+
 def get_module_doc(module):
     doc = module.__doc__
     if doc is not None:
@@ -134,8 +140,8 @@ def get_module_doc(module):
 
 def contribute(definitions):
     # let MakeBoxes contribute first
-    builtins["System`MakeBoxes"].contribute(definitions)
-    for name, item in builtins.items():
+    _builtins["System`MakeBoxes"].contribute(definitions)
+    for name, item in _builtins.items():
         if name != "System`MakeBoxes":
             item.contribute(definitions)
 

mathics/builtin/assignment.py

@@ -1751,7 +1751,7 @@ class LoadModule(Builtin):
      : Python module nomodule does not exist.
      = $Failed
     >> LoadModule["sys"]
-     : Python module sys is not a pymathics module.
+     : Python module sys does not exist.
      = $Failed
     """
     name = "LoadModule"

mathics/builtin/base.py

@@ -104,8 +104,7 @@ def contribute(self, definitions, is_pymodule=False):
                 # used, so it won't work.
                 if option not in definitions.builtin:
                     definitions.builtin[option] = Definition(
-                        name=name, attributes=set()
-                    )
+                        name=name, attributes=set())
 
         # Check if the given options are actually supported by the Builtin.
         # If not, we might issue an optx error and abort. Using '$OptionSyntax'
@@ -249,8 +248,7 @@ def contextify_form_name(f):
                 # used, so it won't work.
                 if option not in definitions.builtin:
                     definitions.builtin[option] = Definition(
-                        name=name, attributes=set()
-                    )
+                        name=name, attributes=set())
         defaults = []
         for spec, value in self.defaults.items():
             value = parse_builtin_rule(value)

mathics/builtin/inout.py

@@ -2169,12 +2169,12 @@ class Precedence(Builtin):
     def apply(self, expr, evaluation) -> Real:
         'Precedence[expr_]'
 
-        from mathics.builtin import builtins
-
         name = expr.get_name()
         precedence = 1000
         if name:
-            builtin = builtins.get(name)
+            builtin = evaluation.definitions.get_definition(name, only_if_exists=True)
+            if builtin:
+                builtin = builtin.builtin
             if builtin is not None and isinstance(builtin, Operator):
                 precedence = builtin.precedence
             else:

mathics/builtin/patterns.py

@@ -429,7 +429,7 @@ def init(self, expr):
         self.test = expr.leaves[1]
         self.test_name = self.test.get_name()
 
-    def quick_pattern_test(self, candidate, test):
+    def quick_pattern_test(self, candidate, test, evaluation):
         if test == 'System`NumberQ':
             return isinstance(candidate, Number)
         elif test == 'System`Negative':
@@ -448,10 +448,11 @@ def quick_pattern_test(self, candidate, test):
                 isinstance(candidate.leaves[1], (Integer, Rational, Real)) and
                 candidate.leaves[1].value < 0)
         else:
-            from mathics.builtin import builtins
             from mathics.builtin.base import Test
-
-            builtin = builtins.get(test)
+            builtin = None
+            builtin = evaluation.definitions.get_definition(test)
+            if builtin:
+                builtin = builtin.builtin
             if builtin is not None and isinstance(builtin, Test):
                 return builtin.test(candidate)
         return None
@@ -462,7 +463,7 @@ def yield_match(vars_2, rest):
             items = expression.get_sequence()
             for item in items:
                 item = item.evaluate(evaluation)
-                quick_test = self.quick_pattern_test(item, self.test_name)
+                quick_test = self.quick_pattern_test(item, self.test_name, evaluation)
                 if quick_test is not None:
                     if not quick_test:
                         break

mathics/builtin/system.py

@@ -407,7 +407,11 @@ class UserName(Predefined):
     name = "$UserName"
 
     def evaluate(self, evaluation) -> String:
-        return String(os.getlogin())
+        try:
+            return String(os.getlogin())
+        except:
+            import pwd
+            return String(pwd.getpwuid(os.getuid())[0])
 
 
 class Version(Predefined):

mathics/core/definitions.py

@@ -82,13 +82,8 @@ def __init__(
                         )
                     except PyMathicsLoadException as e:
                         raise
-                        # print(e.module + " is not a valid pymathics module.")
-                        #continue
                     except ImportError as e:
                         raise
-                        #print(e.__repr__())
-                        #continue
-                    # print(module + loaded_module.pymathics_version_data['version'] + "  by " + loaded_module.pymathics_version_data['author'])
 
                 if builtin_filename is not None:
                     builtin_file = open(builtin_filename, "wb")
@@ -167,17 +162,13 @@ def load_pymathics_module(self, module, remove_on_quit=True):
     def clear_pymathics_modules(self):
         from mathics.builtin import builtins, builtins_by_module
 
-        # Remove all modules that are not in mathics
-        # print("cleaning pymathics modules")
         for key in list(builtins_by_module.keys()):
             if not key.startswith("mathics."):
-                print(f'removing module "{key}" not in mathics.')
                 del builtins_by_module[key]
         for key in pymathics:
             del self.pymathics[key]
 
         self.pymathics = {}
-        # print("everything is clean")
         return None
 
     def clear_cache(self, name=None):
@@ -416,10 +407,14 @@ def get_definition(self, name, only_if_exists=False) -> "Definition":
         builtin = self.builtin.get(name, None)
 
         candidates = [user] if user else []
+        builtin_instance = None
         if pymathics:
+            builtin_instance = pymathics
             candidates.append(pymathics)
         if builtin:
             candidates.append(builtin)
+            if builtin_instance is None:
+                builtin_instance = builtin
 
         definition = candidates[0] if len(candidates)==1 else None
         if len(candidates)>0 and not definition:
@@ -456,6 +451,7 @@ def get_definition(self, name, only_if_exists=False) -> "Definition":
                 options=options,
                 nvalues=sum((c.nvalues for c in candidates),[]),
                 defaultvalues=sum((c.defaultvalues for c in candidates),[]),
+                builtin=builtin_instance
             )
 
         if definition is not None:

mathics/core/expression.py

@@ -2561,13 +2561,15 @@ def boxes_to_text(self, show_string_characters=False, **options) -> str:
 
     def boxes_to_xml(self, show_string_characters=False, **options) -> str:
         from mathics.core.parser import is_symbol_name
-        from mathics.builtin import builtins
+        from mathics.builtin import builtins_by_module
 
         operators = set()
-        for name, builtin in builtins.items():
-            operator = builtin.get_operator_display()
-            if operator is not None:
-                operators.add(operator)
+        for modname, builtins in builtins_by_module.items():
+            for builtin in builtins:
+                # name = builtin.get_name()
+                operator = builtin.get_operator_display()
+                if operator is not None:
+                    operators.add(operator)
 
         text = self.value
 
@@ -2603,13 +2605,15 @@ def render(format, string):
                 return outtext
 
     def boxes_to_tex(self, show_string_characters=False, **options) -> str:
-        from mathics.builtin import builtins
+        from mathics.builtin import builtins_by_module
 
         operators = set()
-        for name, builtin in builtins.items():
-            operator = builtin.get_operator_display()
-            if operator is not None:
-                operators.add(operator)
+
+        for modname, builtins in builtins_by_module.items():
+            for builtin in builtins:
+                operator = builtin.get_operator_display()
+                if operator is not None:
+                    operators.add(operator)
 
         text = self.value
 

mathics/test.py

@@ -13,7 +13,9 @@
 from mathics.core.definitions import Definitions
 from mathics.core.evaluation import Evaluation, Output
 from mathics.core.parser import MathicsSingleLineFeeder
-from mathics.builtin import builtins
+from mathics.builtin import builtins_dict
+
+builtins = builtins_dict()
 
 from mathics import version_string
 from mathics import settings