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Issue 89: warning on using namespace in header #90

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Issue 89: warning on using namespace in header #90

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ea3952d
Issue 89 - Warning on using namespace in header
Feb 17, 2016
43e3c82
Issue 89 - Warning on using namespace in header
Feb 17, 2016
be15898
Issue 89 - Warning on using namespace in header
Feb 17, 2016
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2 changes: 2 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -11,3 +11,5 @@ htmlcov/
*.egg*/
.coverage
.travis-solo/
.project
.pydevproject
14 changes: 12 additions & 2 deletions cpp/find_warnings.py
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,14 @@ def _read_and_parse_includes(self):

return included_files, forward_declarations

def _find_using_namespaces(self):
for node in self.ast_list:
if isinstance(node, ast.Using):
self._add_warning(
"'using namespace ...' should not be used in a header file"
", ignoring rest of file",
node)

def _verify_include_files_used(self, file_uses, included_files):
"""Find all #include files that are unnecessary."""
for include_file, use in file_uses.items():
Expand Down Expand Up @@ -433,8 +441,10 @@ def _find_unused_warnings(self, included_files, forward_declarations,
self._add_warning(msg, node)

def _find_header_warnings(self):
included_files, forward_declarations = self._read_and_parse_includes()
self._find_unused_warnings(included_files, forward_declarations)
self._find_using_namespaces()
if(len(self.warnings) == 0):
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It seems like it would be better if self._find_using_namespaces() returned True if it finds a problem. That way you could do something like:

if not self._find_using_namespaces():
    included_files, forward_declarations = self._read_and_parse_includes()
    self._find_unused_warnings(included_files, forward_declarations)

The above doesn't rely on the self.warnings, which might be modified by other methods (at least in future implementations).

included_files, forward_declarations = self._read_and_parse_includes()
self._find_unused_warnings(included_files, forward_declarations)

def _find_public_function_warnings(self, node, name, primary_header,
all_headers):
Expand Down
1 change: 1 addition & 0 deletions test/expected.txt
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Expand Up @@ -63,6 +63,7 @@ test/unused_static.cc:7: static data 'i'
test/unused_static.cc:8: static data 'j'
test/unused_static.cc:3: unused variable 'z'
test/unused_static.cc:4: unused variable 'b'
test/using.h:8: 'using namespace ...' should not be used in a header file, ignoring rest of file
test/with_main.cc:2: 'include.h' already #included on line 1
test/with_main.cc:3: 'include.h' already #included on line 1
test/with_main.cc:9: 'Foo' forward declaration not expected in source file
Expand Down