preparation for warnings in static analysis

jedi/evaluate/analysis.py

@@ -82,8 +82,20 @@ def add(evaluator, name, jedi_obj, message=None, typ=Error, payload=None):
     evaluator.analysis.append(instance)
 
 
+def add_attribute_error(evaluator, jedi_obj, message, scope):
+    typ = Error
+    payload = scope, jedi_obj  # jedi_obj is a name_part.
+    add(evaluator, 'attribute-error', jedi_obj, message, typ, payload)
+
+
 def _check_for_exception_catch(evaluator, jedi_obj, exception, payload=None):
-    """Returns True if the exception was catched."""
+    """
+    Checks if a jedi object (e.g. `Statement`) sits inside a try/catch and
+    doesn't count as an error (if equal to `exception`).
+    Also checks `hasattr` for AttributeErrors and uses the `payload` to compare
+    it.
+    Returns True if the exception was catched.
+    """
     def check_match(cls):
         try:
             return isinstance(cls, CompiledObject) and issubclass(exception, cls.obj)

jedi/evaluate/finder.py

@@ -57,8 +57,10 @@ class NameFinder(object):
                 else:
                     message = ('AttributeError: %s has no attribute %s.'
                                % (self._last_filter_name_scope, self.name_str))
-                analysis.add(self._evaluator, err_type, self.name_str, message,
-                             payload=(self.scope, self.name_str))
+                    payload = self.name_str
+                    analysis.add_attribute_error(self._evaluator,
+                                                 self.name_str, message,
+                                                 self.scope)
 
         debug.dbg('finder._names_to_types: %s -> %s', names, types)
         return self._resolve_descriptors(types)

test/conftest.py

@@ -9,6 +9,7 @@ from . import helpers
 from . import run
 from . import refactor
 import jedi
+from jedi.evaluate.analysis import Warning
 
 
 def pytest_addoption(parser):
@@ -105,7 +106,9 @@ class StaticAnalysisCase(object):
 
     def run(self, compare_cb):
         analysis = jedi.Script(self._source, path=self._path)._analysis()
-        analysis = [(r.line, r.column, r.name) for r in analysis]
+        typ_str = lambda inst: 'warning ' if isinstance(inst, Warning) else ''
+        analysis = [(r.line, r.column, typ_str(r) + r.name)
+                    for r in analysis]
         compare_cb(self, analysis, self.collect_comparison())
 
     def __repr__(self):