addons/namingng.py: Add tests for include guards, config file validation. (#5815)
Include guard naming can be validated against various patterns: - prefixes/suffixes (`_FILE_H`, `PROJECT_FILE_H`, `FILE_H_`) - basename/full path (`FILE_H`, `SUB_DIR_INC_FILE_H`) - upper- or lowercase (`FILE_H`, `file_h`) - any combination of the above (`project_sub_dir_inc_file_h_`) A regexp can be specified to match header filenames. The example matches any filename not starting with / and ending with `.h`, intended to match C header files while exluding system files. The test is not limited to naming only; validity and presence of include guards can also be tested by setting `"required":true` in the config file. Enabling this feature requires adding the key `"include_guard"` to the namingng config file used. The namingng unit test is extended to test various features of the include guard test. Also, config handling is improved, adding (superficial) validation and a unit test.
This commit is contained in:
parent
d9d23d979d
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@ -2,6 +2,15 @@
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"RE_VARNAME": ["[a-z]*[a-zA-Z0-9_]*\\Z"],
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"RE_PRIVATE_MEMBER_VARIABLE": null,
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"RE_FUNCTIONNAME": ["[a-z0-9A-Z]*\\Z"],
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"include_guard": {
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"input": "path",
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"prefix": "",
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"suffix": "",
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"case": "upper",
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"max_linenr": 5,
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"RE_HEADERFILE": "[^/].*\\.h\\Z",
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"required": true
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},
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"var_prefixes": {"uint32_t": "ui32",
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"int*": "intp"},
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"function_prefixes": {"uint16_t": "ui16",
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@ -3,6 +3,7 @@
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# cppcheck addon for naming conventions
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# An enhanced version. Configuration is taken from a json file
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# It supports to check for type-based prefixes in function or variable names.
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# Aside from include guard naming, include guard presence can also be tested.
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#
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# Example usage (variable name must start with lowercase, function name must start with uppercase):
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# $ cppcheck --dump path-to-src/
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@ -11,9 +12,18 @@
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# JSON format:
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#
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# {
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# "RE_VARNAME": "[a-z]*[a-zA-Z0-9_]*\\Z",
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# "RE_VARNAME": ["[a-z]*[a-zA-Z0-9_]*\\Z"],
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# "RE_PRIVATE_MEMBER_VARIABLE": null,
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# "RE_FUNCTIONNAME": "[a-z0-9A-Z]*\\Z",
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# "RE_FUNCTIONNAME": ["[a-z0-9A-Z]*\\Z"],
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# "_comment": "comments can be added to the config with underscore-prefixed keys",
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# "include_guard": {
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# "input": "path",
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# "prefix": "GUARD_",
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# "case": "upper",
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# "max_linenr": 5,
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# "RE_HEADERFILE": "[^/].*\\.h\\Z",
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# "required": true
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# },
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# "var_prefixes": {"uint32_t": "ui32"},
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# "function_prefixes": {"uint16_t": "ui16",
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# "uint32_t": "ui32"}
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@ -40,10 +50,89 @@ class DataStruct:
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def reportNamingError(location,message,errorId='namingConvention',severity='style',extra=''):
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cppcheckdata.reportError(location,severity,message,'namingng',errorId,extra)
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def configError(error,fatal=True):
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print('config error: %s'%error)
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if fatal:
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sys.exit(1)
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def loadConfig(configfile):
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if not os.path.exists(configfile):
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configError("cannot find config file '%s'"%configfile)
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try:
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with open(configfile) as fh:
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try:
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data = json.load(fh)
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return data
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except json.JSONDecodeError as e:
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configError("error parsing config file as JSON at line %d: %s"%(e.lineno,e.msg))
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except Exception as e:
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configError("error opening config file '%s': %s"%(configfile,e))
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if not isinstance(data, dict):
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configError('config file must contain a JSON object at the top level')
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# All errors are emitted before bailing out, to make the unit test more
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# effective.
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have_error = False
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# Put config items in a class, so that settings can be accessed using
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# config.feature
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class Config:
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pass
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config = Config()
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mapping = {
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'file': ('RE_FILE', list),
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'namespace': ('RE_NAMESPACE', list),
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'include_guard': ('include_guard', dict),
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'variable': ('RE_VARNAME', list),
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'variable_prefixes': ('var_prefixes', dict, {}),
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'private_member': ('RE_PRIVATE_MEMBER_VARIABLE', list),
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'public_member': ('RE_PUBLIC_MEMBER_VARIABLE', list),
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'global_variable': ('RE_GLOBAL_VARNAME', list),
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'function_name': ('RE_FUNCTIONNAME', list),
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'function_prefixes': ('function_prefixes', dict, {}),
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'class_name': ('RE_CLASS_NAME', list),
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'skip_one_char_variables': ('skip_one_char_variables', bool),
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}
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# parse defined keys and store as members of config object
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for key,opts in mapping.items():
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json_key = opts[0]
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req_type = opts[1]
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default = None if len(opts)<3 else opts[2]
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value = data.pop(json_key,default)
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if value is not None and not isinstance(value, req_type):
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req_typename = req_type.__name__
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got_typename = type(value).__name__
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configError('%s must be %s (not %s), or not set'%(json_key,req_typename,got_typename),fatal=False)
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have_error = True
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continue
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if req_type == list and value is not None:
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# type 'list' implies a list of regular expressions
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for item in value:
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try:
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re.compile(item)
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except re.error as err:
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configError("item '%s' of '%s' is not a valid regular expression: %s"%(item,json_key,err),fatal=False)
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have_error = True
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if have_error:
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continue
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setattr(config,key,value)
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# check remaining keys, only accept underscore-prefixed comments
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for key,value in data.items():
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if key == '' or key[0] != '_':
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configError("unknown config key '%s'"%key,fatal=False)
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have_error = True
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if have_error:
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sys.exit(1)
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return config
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def checkTrueRegex(data, expr, msg):
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@ -73,10 +162,115 @@ def evalExpr(conf, exp, mockToken, msgType):
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msg = msgType + ' ' + mockToken.str + ' violates naming convention'
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checkFalseRegex(mockToken, exp, msg)
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def check_include_guard_name(conf_include_guard,cfg,directive):
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parts = directive.str.split()
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if len(parts) != 2:
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msg = 'syntax error'
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reportNamingError(directive,msg,'syntax')
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return None
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guard_name = parts[1]
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filename = directive.file
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if conf_include_guard.get('input','path') == 'basename':
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filename = os.path.basename(filename)
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use_case = conf_include_guard.get('case','upper')
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if use_case == 'upper':
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filename = filename.upper()
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elif use_case == 'lower':
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filename = filename.lower()
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elif use_case == 'keep':
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pass # keep filename case as-is
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else:
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print("invalid config value for 'case': '%s'"%use_case,file=sys.stderr)
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sys.exit(1)
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barename = re.sub('[^A-Za-z0-9]','_',filename).strip('_')
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expect_guard_name = conf_include_guard.get('prefix','') + barename + conf_include_guard.get('suffix','')
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if expect_guard_name != guard_name:
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msg = 'include guard naming violation; %s != %s'%(guard_name,expect_guard_name)
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reportNamingError(directive,msg,'includeGuardName')
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return guard_name
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def check_include_guard(conf_include_guard,cfg,unguarded_include_files):
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# Scan for '#ifndef FILE_H' as the first directive, in the first N lines.
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# Then test whether the next directive #defines the found name.
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# Various tests are done:
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# - check include guards for their naming and consistency
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# - test whether include guards are in place
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max_linenr = conf_include_guard.get('max_linenr', 5)
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def report(directive,msg,errorId):
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reportNamingError(directive,msg,errorId)
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def report_pending_ifndef(directive):
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report(directive,'include guard #ifndef is not followed by #define','includeGuardIncomplete')
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last_fn = None
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pending_ifndef = None
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phase = 0
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for directive in cfg.directives:
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if last_fn != directive.file:
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if pending_ifndef:
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report_pending_ifndef(pending_ifndef)
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pending_ifndef = None
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last_fn = directive.file
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phase = 0
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if phase == -1:
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# ignore (the remainder of) this file
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continue
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if not re.match(include_guard_header_re,directive.file):
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phase = -1
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continue
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if directive.linenr > max_linenr:
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if phase == 0 and conf_include_guard.get('required',1):
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report(directive,'include guard not found before line %d'%max_linenr,'includeGuardMissing')
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pass
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phase = -1
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continue
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if phase == 0:
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# looking for '#ifndef FILE_H'
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if not directive.str.startswith('#ifndef'):
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if conf_include_guard.get('required',1):
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report(directive,'first preprocessor directive should be include guard #ifndef','includeGuardMissing')
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phase = -1
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continue
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guard_name = check_include_guard_name(conf_include_guard,cfg,directive)
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if guard_name == None:
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phase = -1
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continue
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pending_ifndef = directive
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phase = 1
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elif phase == 1:
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pending_ifndef = None
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# looking for '#define FILE_H'
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if not directive.str.startswith('#define'):
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report(directive,'second preprocessor directive should be include guard #define','includeGuardIncomplete')
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phase = -1
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continue
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parts = directive.str.split()
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if len(parts) == 1:
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report(directive,'syntax error','syntax')
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phase = -1
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continue
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if guard_name != parts[1]:
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report(directive,'include guard does not guard; %s != %s'%(guard_name,parts[1]),'includeGuardAwayFromDuty',severity='warning')
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unguarded_include_files.remove(directive.file)
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phase = -1
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if pending_ifndef:
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report_pending_ifndef(pending_ifndef)
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def process(dumpfiles, configfile, debugprint=False):
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conf = loadConfig(configfile)
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if conf.include_guard:
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global include_guard_header_re
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include_guard_header_re = conf.include_guard.get('RE_HEADERFILE',"[^/].*\\.h\\Z")
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for afile in dumpfiles:
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if not afile[-5:] == '.dump':
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continue
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@ -85,11 +279,11 @@ def process(dumpfiles, configfile, debugprint=False):
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data = cppcheckdata.CppcheckData(afile)
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# Check File naming
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if "RE_FILE" in conf and conf["RE_FILE"]:
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if conf.file:
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for source_file in data.files:
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basename = os.path.basename(source_file)
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good = False
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for exp in conf["RE_FILE"]:
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for exp in conf.file:
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good |= bool(re.match(exp, source_file))
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good |= bool(re.match(exp, basename))
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if not good:
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reportNamingError(mockToken, 'File name ' + basename + ' violates naming convention')
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# Check Namespace naming
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if "RE_NAMESPACE" in conf and conf["RE_NAMESPACE"]:
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if conf.namespace:
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for tk in data.rawTokens:
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if tk.str == 'namespace':
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mockToken = DataStruct(tk.next.file, tk.next.linenr, tk.next.str)
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msgType = 'Namespace'
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for exp in conf["RE_NAMESPACE"]:
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evalExpr(conf["RE_NAMESPACE"], exp, mockToken, msgType)
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for exp in conf.namespace:
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evalExpr(conf.namespace, exp, mockToken, msgType)
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unguarded_include_files = []
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if conf.include_guard:
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if conf.include_guard.get('required',1):
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unguarded_include_files = [fn for fn in data.files if re.match(include_guard_header_re,fn)]
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for cfg in data.configurations:
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if not args.cli:
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print('Checking %s, config %s...' % (afile, cfg.name))
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if "RE_VARNAME" in conf and conf["RE_VARNAME"]:
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if conf.variable:
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for var in cfg.variables:
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if var.nameToken and var.access != 'Global' and var.access != 'Public' and var.access != 'Private':
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prev = var.nameToken.previous
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@ -126,10 +325,11 @@ def process(dumpfiles, configfile, debugprint=False):
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print("\n")
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print("\t-- {} {}".format(varType, str(var.nameToken.str)))
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if conf["skip_one_char_variables"] and len(var.nameToken.str) == 1:
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if conf.skip_one_char_variables and len(var.nameToken.str) == 1:
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continue
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if varType in conf.get("var_prefixes",{}):
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if not var.nameToken.str.startswith(conf["var_prefixes"][varType]):
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if varType in conf.variable_prefixes:
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prefix = conf.variable_prefixes[varType]
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if not var.nameToken.str.startswith(prefix):
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reportNamingError(var.typeStartToken,
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'Variable ' +
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var.nameToken.str +
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@ -137,42 +337,42 @@ def process(dumpfiles, configfile, debugprint=False):
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mockToken = DataStruct(var.typeStartToken.file, var.typeStartToken.linenr, var.nameToken.str)
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msgType = 'Variable'
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for exp in conf["RE_VARNAME"]:
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evalExpr(conf["RE_VARNAME"], exp, mockToken, msgType)
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for exp in conf.variable:
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evalExpr(conf.variable, exp, mockToken, msgType)
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# Check Private Variable naming
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if "RE_PRIVATE_MEMBER_VARIABLE" in conf and conf["RE_PRIVATE_MEMBER_VARIABLE"]:
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if conf.private_member:
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# TODO: Not converted yet
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for var in cfg.variables:
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if (var.access is None) or var.access != 'Private':
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continue
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mockToken = DataStruct(var.typeStartToken.file, var.typeStartToken.linenr, var.nameToken.str)
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msgType = 'Private member variable'
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for exp in conf["RE_PRIVATE_MEMBER_VARIABLE"]:
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evalExpr(conf["RE_PRIVATE_MEMBER_VARIABLE"], exp, mockToken, msgType)
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for exp in conf.private_member:
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evalExpr(conf.private_member, exp, mockToken, msgType)
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# Check Public Member Variable naming
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if "RE_PUBLIC_MEMBER_VARIABLE" in conf and conf["RE_PUBLIC_MEMBER_VARIABLE"]:
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if conf.public_member:
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for var in cfg.variables:
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if (var.access is None) or var.access != 'Public':
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continue
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mockToken = DataStruct(var.typeStartToken.file, var.typeStartToken.linenr, var.nameToken.str)
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msgType = 'Public member variable'
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for exp in conf["RE_PUBLIC_MEMBER_VARIABLE"]:
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evalExpr(conf["RE_PUBLIC_MEMBER_VARIABLE"], exp, mockToken, msgType)
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for exp in conf.public_member:
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evalExpr(conf.public_member, exp, mockToken, msgType)
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# Check Global Variable naming
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if "RE_GLOBAL_VARNAME" in conf and conf["RE_GLOBAL_VARNAME"]:
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if conf.global_variable:
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for var in cfg.variables:
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if (var.access is None) or var.access != 'Global':
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continue
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mockToken = DataStruct(var.typeStartToken.file, var.typeStartToken.linenr, var.nameToken.str)
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msgType = 'Public member variable'
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for exp in conf["RE_GLOBAL_VARNAME"]:
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evalExpr(conf["RE_GLOBAL_VARNAME"], exp, mockToken, msgType)
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for exp in conf.global_variable:
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evalExpr(conf.global_variable, exp, mockToken, msgType)
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# Check Functions naming
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if "RE_FUNCTIONNAME" in conf and conf["RE_FUNCTIONNAME"]:
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if conf.function_name:
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for token in cfg.tokenlist:
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if token.function:
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if token.function.type in ('Constructor', 'Destructor', 'CopyConstructor', 'MoveConstructor'):
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@ -185,23 +385,31 @@ def process(dumpfiles, configfile, debugprint=False):
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if debugprint:
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print("\t:: {} {}".format(retval, token.function.name))
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if retval and retval in conf.get("function_prefixes",{}):
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if not token.function.name.startswith(conf["function_prefixes"][retval]):
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if retval and retval in conf.function_prefixes:
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if not token.function.name.startswith(conf.function_prefixes[retval]):
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reportNamingError(token, 'Function ' + token.function.name + ' violates naming convention')
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mockToken = DataStruct(token.file, token.linenr, token.function.name)
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msgType = 'Function'
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for exp in conf["RE_FUNCTIONNAME"]:
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evalExpr(conf["RE_FUNCTIONNAME"], exp, mockToken, msgType)
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for exp in conf.function_name:
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evalExpr(conf.function_name, exp, mockToken, msgType)
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# Check Class naming
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if "RE_CLASS_NAME" in conf and conf["RE_CLASS_NAME"]:
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if conf.class_name:
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for fnc in cfg.functions:
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# Check if it is Constructor/Destructor
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if fnc.type == 'Constructor' or fnc.type == 'Destructor':
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mockToken = DataStruct(fnc.tokenDef.file, fnc.tokenDef.linenr, fnc.name)
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msgType = 'Class ' + fnc.type
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for exp in conf["RE_CLASS_NAME"]:
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evalExpr(conf["RE_CLASS_NAME"], exp, mockToken, msgType)
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for exp in conf.class_name:
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evalExpr(conf.class_name, exp, mockToken, msgType)
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# Check include guard naming
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if conf.include_guard:
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check_include_guard(conf.include_guard,cfg,unguarded_include_files)
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for fn in unguarded_include_files:
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mockToken = DataStruct(fn,0,os.path.basename(fn))
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reportNamingError(mockToken,'Missing include guard','includeGuardMissing')
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if __name__ == "__main__":
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parser = cppcheckdata.ArgumentParser()
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@ -346,6 +346,15 @@ def test_addon_namingng(tmpdir):
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"RE_VARNAME": ["[a-z][a-z0-9_]*[a-z0-9]\\Z"],
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"RE_GLOBAL_VARNAME": ["[a-z][a-z0-9_]*[a-z0-9]\\Z"],
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||||
"RE_FUNCTIONNAME": ["[a-z][a-z0-9_]*[a-z0-9]\\Z"],
|
||||
"include_guard": {
|
||||
"input": "basename",
|
||||
"prefix": "_",
|
||||
"suffix": "",
|
||||
"case": "upper",
|
||||
"max_linenr": 5,
|
||||
"RE_HEADERFILE": ".*\\.h\\Z",
|
||||
"required": true
|
||||
},
|
||||
"var_prefixes": {"uint32_t": "ui32"},
|
||||
"function_prefixes": {"uint16_t": "ui16",
|
||||
"uint32_t": "ui32"},
|
||||
|
@ -353,6 +362,12 @@ def test_addon_namingng(tmpdir):
|
|||
}
|
||||
""".replace('\\','\\\\'))
|
||||
|
||||
test_unguarded_include_file_basename = 'test_unguarded.h'
|
||||
test_unguarded_include_file = os.path.join(tmpdir, test_unguarded_include_file_basename)
|
||||
with open(test_unguarded_include_file, 'wt') as f:
|
||||
f.write("""
|
||||
void InvalidFunctionUnguarded();
|
||||
""")
|
||||
|
||||
test_include_file_basename = '_test.h'
|
||||
test_include_file = os.path.join(tmpdir, test_include_file_basename)
|
||||
|
@ -364,8 +379,10 @@ def test_addon_namingng(tmpdir):
|
|||
void InvalidFunction();
|
||||
extern int _invalid_extern_global;
|
||||
|
||||
#include "{}"
|
||||
|
||||
#endif
|
||||
""")
|
||||
""".format(test_unguarded_include_file))
|
||||
|
||||
test_file_basename = 'test_.c'
|
||||
test_file = os.path.join(tmpdir, test_file_basename)
|
||||
|
@ -403,11 +420,18 @@ static int _invalid_static_global;
|
|||
lines = [line for line in stderr.splitlines() if line.strip() != '^' and line != '']
|
||||
expect = [
|
||||
'{}:0:0: style: File name {} violates naming convention [namingng-namingConvention]'.format(test_include_file,test_include_file_basename),
|
||||
'{}:2:0: style: include guard naming violation; TEST_H != _TEST_H [namingng-includeGuardName]'.format(test_include_file),
|
||||
'#ifndef TEST_H',
|
||||
'{}:5:0: style: Function InvalidFunction violates naming convention [namingng-namingConvention]'.format(test_include_file),
|
||||
'void InvalidFunction();',
|
||||
'{}:6:0: style: Public member variable _invalid_extern_global violates naming convention [namingng-namingConvention]'.format(test_include_file),
|
||||
'extern int _invalid_extern_global;',
|
||||
|
||||
'{}:0:0: style: File name {} violates naming convention [namingng-namingConvention]'.format(test_unguarded_include_file,test_unguarded_include_file_basename),
|
||||
'{}:0:0: style: Missing include guard [namingng-includeGuardMissing]'.format(test_unguarded_include_file),
|
||||
'{}:2:0: style: Function InvalidFunctionUnguarded violates naming convention [namingng-namingConvention]'.format(test_unguarded_include_file),
|
||||
'void InvalidFunctionUnguarded();',
|
||||
|
||||
'{}:0:0: style: File name {} violates naming convention [namingng-namingConvention]'.format(test_file,test_file_basename),
|
||||
'{}:7:0: style: Variable _invalid_arg violates naming convention [namingng-namingConvention]'.format(test_file),
|
||||
'void valid_function2(int _invalid_arg);',
|
||||
|
@ -432,6 +456,87 @@ static int _invalid_static_global;
|
|||
assert lines == expect
|
||||
|
||||
|
||||
def test_addon_namingng_config(tmpdir):
|
||||
addon_file = os.path.join(tmpdir, 'namingng.json')
|
||||
addon_config_file = os.path.join(tmpdir, 'namingng.config.json')
|
||||
with open(addon_file, 'wt') as f:
|
||||
f.write("""
|
||||
{
|
||||
"script": "addons/namingng.py",
|
||||
"args": [
|
||||
"--configfile=%s"
|
||||
]
|
||||
}
|
||||
"""%(addon_config_file).replace('\\','\\\\'))
|
||||
|
||||
with open(addon_config_file, 'wt') as f:
|
||||
f.write("""
|
||||
{
|
||||
"RE_FILE": "[^/]*[a-z][a-z0-9_]*[a-z0-9]\\.c\\Z",
|
||||
"RE_NAMESPACE": false,
|
||||
"RE_VARNAME": ["+bad pattern","[a-z]_good_pattern\\Z","(parentheses?"],
|
||||
"RE_PRIVATE_MEMBER_VARIABLE": "[a-z][a-z0-9_]*[a-z0-9]\\Z",
|
||||
"RE_PUBLIC_MEMBER_VARIABLE": "[a-z][a-z0-9_]*[a-z0-9]\\Z",
|
||||
"RE_GLOBAL_VARNAME": "[a-z][a-z0-9_]*[a-z0-9]\\Z",
|
||||
"RE_FUNCTIONNAME": "[a-z][a-z0-9_]*[a-z0-9]\\Z",
|
||||
"RE_CLASS_NAME": "[a-z][a-z0-9_]*[a-z0-9]\\Z",
|
||||
"_comment1": "these should all be arrays, or null, or not set",
|
||||
|
||||
"include_guard": true,
|
||||
"var_prefixes": ["bad"],
|
||||
"function_prefixes": false,
|
||||
"_comment2": "these should all be dict",
|
||||
|
||||
"skip_one_char_variables": "false",
|
||||
"_comment3": "this should be bool",
|
||||
|
||||
"RE_VAR_NAME": "typo"
|
||||
}
|
||||
""".replace('\\','\\\\'))
|
||||
|
||||
test_file_basename = 'test.c'
|
||||
test_file = os.path.join(tmpdir, test_file_basename)
|
||||
with open(test_file, 'a') as f:
|
||||
# only create the file
|
||||
pass
|
||||
|
||||
args = ['--addon='+addon_file, '--verbose', '--enable=all', test_file]
|
||||
|
||||
exitcode, stdout, stderr = cppcheck(args)
|
||||
assert exitcode == 0
|
||||
|
||||
lines = stdout.splitlines()
|
||||
assert lines == [
|
||||
'Checking {} ...'.format(test_file),
|
||||
'Defines:',
|
||||
'Undefines:',
|
||||
'Includes:',
|
||||
'Platform:native'
|
||||
]
|
||||
lines = stderr.splitlines()
|
||||
# ignore the first line, stating that the addon failed to run properly
|
||||
lines.pop(0)
|
||||
assert lines == [
|
||||
"Output:",
|
||||
"config error: RE_FILE must be list (not str), or not set",
|
||||
"config error: RE_NAMESPACE must be list (not bool), or not set",
|
||||
"config error: include_guard must be dict (not bool), or not set",
|
||||
"config error: item '+bad pattern' of 'RE_VARNAME' is not a valid regular expression: nothing to repeat at position 0",
|
||||
"config error: item '(parentheses?' of 'RE_VARNAME' is not a valid regular expression: missing ), unterminated subpattern at position 0",
|
||||
"config error: var_prefixes must be dict (not list), or not set",
|
||||
"config error: RE_PRIVATE_MEMBER_VARIABLE must be list (not str), or not set",
|
||||
"config error: RE_PUBLIC_MEMBER_VARIABLE must be list (not str), or not set",
|
||||
"config error: RE_GLOBAL_VARNAME must be list (not str), or not set",
|
||||
"config error: RE_FUNCTIONNAME must be list (not str), or not set",
|
||||
"config error: function_prefixes must be dict (not bool), or not set",
|
||||
"config error: RE_CLASS_NAME must be list (not str), or not set",
|
||||
"config error: skip_one_char_variables must be bool (not str), or not set",
|
||||
"config error: unknown config key 'RE_VAR_NAME' [internalError]",
|
||||
"",
|
||||
"^",
|
||||
]
|
||||
|
||||
|
||||
def test_addon_findcasts(tmpdir):
|
||||
test_file = os.path.join(tmpdir, 'test.cpp')
|
||||
with open(test_file, 'wt') as f:
|
||||
|
|
Loading…
Reference in New Issue