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Revision 94983 - (hide annotations)
Fri May 2 11:05:28 2014 UTC (5 years, 8 months ago) by jasonw
File size: 13553 byte(s)
<<Merged from trunk#94978.>>
1 jasonw 94983 note
2     description: "THE Code Analyzer."
3     author: "Stefan Zurfluh"
4     date: "$Date$"
5     revision: "$Revision$"
6    
7     class
8     CA_CODE_ANALYZER
9    
10     inherit
11     SHARED_EIFFEL_PROJECT
12    
13     CA_SHARED_NAMES
14    
15     create
16     make
17    
18     feature {NONE} -- Initialization
19    
20     make
21     -- Initialization for `Current'.
22     do
23     create settings.make
24     create rules.make
25     -- Adding the rules.
26     rules.extend (create {CA_SELF_ASSIGNMENT_RULE}.make)
27     rules.extend (create {CA_UNUSED_ARGUMENT_RULE}.make)
28     rules.extend (create {CA_NPATH_RULE}.make (settings.preference_manager))
29     rules.extend (create {CA_EMPTY_IF_RULE}.make)
30     rules.extend (create {CA_FEATURE_NEVER_CALLED_RULE}.make)
31     rules.extend (create {CA_CQ_SEPARATION_RULE}.make)
32     rules.extend (create {CA_UNNEEDED_OT_LOCAL_RULE}.make)
33     rules.extend (create {CA_UNNEEDED_OBJECT_TEST_RULE}.make) -- Needs type info.
34     rules.extend (create {CA_NESTED_COMPLEXITY_RULE}.make (settings.preference_manager))
35     rules.extend (create {CA_MANY_ARGUMENTS_RULE}.make (settings.preference_manager))
36     rules.extend (create {CA_CREATION_PROC_EXPORTED_RULE}.make)
37     rules.extend (create {CA_VARIABLE_NOT_READ_RULE}.make)
38     rules.extend (create {CA_SEMICOLON_ARGUMENTS_RULE}.make)
39     rules.extend (create {CA_VERY_LONG_ROUTINE_RULE}.make (settings.preference_manager))
40     rules.extend (create {CA_VERY_BIG_CLASS_RULE}.make (settings.preference_manager))
41     rules.extend (create {CA_FEATURE_SECTION_COMMENT_RULE}.make)
42     rules.extend (create {CA_FEATURE_NOT_COMMENTED_RULE}.make)
43     rules.extend (create {CA_BOOLEAN_RESULT_RULE}.make)
44     rules.extend (create {CA_BOOLEAN_COMPARISON_RULE}.make)
45     rules.extend (create {CA_VERY_SHORT_IDENTIFIER_RULE}.make (settings.preference_manager))
46     rules.extend (create {CA_VERY_LONG_IDENTIFIER_RULE}.make (settings.preference_manager))
47     rules.extend (create {CA_MISSING_IS_EQUAL_RULE}.make)
48     rules.extend (create {CA_SIMPLIFIABLE_BOOLEAN_RULE}.make)
49     rules.extend (create {CA_SELF_COMPARISON_RULE}.make)
50     rules.extend (create {CA_TODO_RULE}.make)
51     rules.extend (create {CA_WRONG_LOOP_ITERATION_RULE}.make)
52     rules.extend (create {CA_INSPECT_INSTRUCTIONS_RULE}.make (settings.preference_manager))
53     rules.extend (create {CA_ATTRIBUTE_TO_LOCAL_RULE}.make)
54     rules.extend (create {CA_EMPTY_EFFECTIVE_ROUTINE_RULE}.make)
55     rules.extend (create {CA_IF_ELSE_NOT_EQUAL_RULE}.make)
56     rules.extend (create {CA_SHORT_CIRCUIT_IF_RULE}.make)
57     rules.extend (create {CA_ITERABLE_LOOP_RULE}.make) -- Needs type info.
58     rules.extend (create {CA_COUNT_EQUALS_ZERO_RULE}.make) -- Needs type info.
59     rules.extend (create {CA_DEEPLY_NESTED_IF_RULE}.make (settings.preference_manager))
60     rules.extend (create {CA_UNNEEDED_HELPER_VARIABLE_RULE}.make (settings.preference_manager))
61     rules.extend (create {CA_UNNEEDED_PARENTHESES_RULE}.make)
62     rules.extend (create {CA_CLASS_NAMING_CONVENTION_RULE}.make)
63     rules.extend (create {CA_FEATURE_NAMING_CONVENTION_RULE}.make)
64     rules.extend (create {CA_VARIABLE_NAMING_CONVENTION_RULE}.make (settings.preference_manager))
65     rules.extend (create {CA_ARGUMENT_NAMING_CONVENTION_RULE}.make (settings.preference_manager))
66     rules.extend (create {CA_UNNECESSARY_SIGN_OPERATOR_RULE}.make)
67     rules.extend (create {CA_EMPTY_UNCOMMENTED_ROUTINE_RULE}.make)
68     rules.extend (create {CA_UNNEEDED_ACCESSOR_FUNCTION_RULE}.make)
69     rules.extend (create {CA_MERGEABLE_FEATURE_CLAUSES_RULE}.make)
70     rules.extend (create {CA_EMPTY_RESCUE_CLAUSE_RULE}.make)
71     rules.extend (create {CA_INSPECT_NO_WHEN_RULE}.make)
72     rules.extend (create {CA_EXPLICIT_REDUNDANT_INHERITANCE_RULE}.make)
73    
74     settings.initialize_rule_settings (rules)
75    
76     create classes_to_analyze.make
77     create rule_violations.make (100)
78     create completed_actions
79     create output_actions
80    
81     create ignoredby.make (25)
82     create library_class.make (25)
83     create nonlibrary_class.make (25)
84     end
85    
86     feature -- Analysis interface
87    
88     add_completed_action (a_action: attached PROCEDURE [ANY, TUPLE [ITERABLE [TUPLE [detachable EXCEPTION, CLASS_C]]]])
89     -- Adds `a_action' to the list of procedures that will be
90     -- called when analysis has completed.
91     do
92     completed_actions.extend (a_action)
93     end
94    
95     add_output_action (a_action: attached PROCEDURE [ANY, TUPLE [READABLE_STRING_GENERAL]])
96     -- Adds `a_action' to the procedures that are called for outputting status. The final results
97     -- (rule violations) are not given to these procedures.
98     do
99     output_actions.extend (a_action)
100     end
101    
102     analyze
103     -- Analyze all the classes that have been added.
104     require
105     not is_running
106     local
107     l_rules_checker: CA_ALL_RULES_CHECKER
108     l_task: CA_RULE_CHECKING_TASK
109     l_rules_to_check: LINKED_LIST [CA_RULE]
110     do
111     is_running := True
112    
113     create l_rules_checker.make
114     create l_rules_to_check.make
115     across rules as l_rules loop
116     l_rules.item.clear_violations
117     if is_rule_checkable (l_rules.item) then
118     l_rules_to_check.extend (l_rules.item)
119     -- Here we only prepare standard rules. The rule checking task will iterate again
120     -- through the rules and run the analysis on the enabled rules.
121     if attached {CA_STANDARD_RULE} l_rules.item as l_std_rule then
122     l_std_rule.prepare_checking (l_rules_checker)
123     end
124     end
125     end
126    
127     create l_task.make (l_rules_checker, l_rules_to_check, classes_to_analyze, agent analysis_completed)
128     l_task.set_output_actions (output_actions)
129     rota.run_task (l_task)
130     end
131    
132     is_rule_checkable (a_rule: attached CA_RULE): BOOLEAN
133     -- Will `a_rule' be checked based on the current preferences and based on the current
134     -- checking scope?
135     do
136     Result := a_rule.is_enabled.value
137     and then (system_wide_check or else (not a_rule.is_system_wide))
138     and then is_severity_enabled (a_rule.severity)
139     end
140    
141     clear_classes_to_analyze
142     -- Removes all classes that have been added to the list of classes
143     -- to analyze.
144     do
145     classes_to_analyze.wipe_out
146     end
147    
148     add_whole_system
149     -- Adds all the classes that are part of the current system. Classes of referenced libraries
150     -- will not be added.
151     do
152     across
153     eiffel_universe.groups as l_groups
154     loop
155     -- Only load top-level clusters, as the others will be loaded recursively afterwards.
156     if attached {CLUSTER_I} l_groups.item as l_cluster and then l_cluster.parent_cluster = Void then
157     add_cluster (l_cluster)
158     end
159     end
160    
161     system_wide_check := True
162     end
163    
164     add_cluster (a_cluster: attached CLUSTER_I)
165     -- Add all classes of cluster `a_cluster'.
166     do
167     system_wide_check := False
168    
169     if a_cluster.classes /= Void then
170     across a_cluster.classes as ic loop
171     add_class (ic.item)
172     end
173     end
174    
175     if a_cluster.sub_clusters /= Void then
176     across a_cluster.sub_clusters as ic loop
177     add_cluster (ic.item)
178     end
179     end
180     end
181    
182     add_group (a_group: attached CONF_GROUP)
183     -- Add all classes of the configuration group `a_group'.
184     require
185     a_group_not_void: a_group /= Void
186     do
187     if a_group.classes /= Void then
188     across a_group.classes as ic loop
189     add_class (ic.item)
190     end
191     end
192     end
193    
194     add_classes (a_classes: attached ITERABLE [attached CONF_CLASS])
195     -- Add the classes `a_classes'.
196     do
197     system_wide_check := False
198    
199     across a_classes as l_classes loop
200     add_class (l_classes.item)
201     end
202     end
203    
204     add_class (a_class: attached CONF_CLASS)
205     -- Adds class `a_class'.
206     do
207     system_wide_check := False
208    
209     if attached {EIFFEL_CLASS_I} a_class as l_eiffel_class
210     and then attached l_eiffel_class.compiled_class as l_compiled
211     then
212     classes_to_analyze.extend (l_compiled)
213    
214     extract_indexes (l_compiled)
215     else
216     output_actions.call ([ca_messages.class_skipped (a_class.name)])
217     end
218     end
219    
220     feature -- Properties
221    
222     is_running: BOOLEAN
223     -- Is code analysis running?
224    
225     rules: LINKED_LIST [CA_RULE]
226     -- List of rules that will be used for analysis.
227    
228     rule_violations: detachable HASH_TABLE [SORTED_TWO_WAY_LIST [CA_RULE_VIOLATION], CLASS_C]
229     -- All found violations from the last analysis.
230    
231     settings: CA_SETTINGS
232     -- The settings manager for Code Analysis.
233    
234     preferences: PREFERENCES
235     -- Code Analysis preferences.
236     do Result := settings.preferences end
237    
238     class_list: ITERABLE [CLASS_C]
239     -- List of classes that have been added.
240     do Result := classes_to_analyze end
241    
242     feature {NONE} -- Implementation
243    
244     csv_file_name: STRING = "last_analysis_result.csv"
245    
246     csv_header: STRING = "Severity;Class;Location;Title;Description;Rule ID;Severity Score"
247    
248     analysis_completed (a_exceptions: detachable ITERABLE [TUPLE [detachable EXCEPTION, CLASS_C]])
249     -- Will be called when the analysis task has finished. `a_exceptions'
250     -- contains a list of exception that occurred during analysis.
251     local
252     l_csv_writer: CA_CSV_WRITER
253     do
254     create l_csv_writer.make (csv_file_name, csv_header)
255    
256     across rules as l_rules loop
257     across l_rules.item.violations as l_v loop
258     -- Check the ignore list.
259     if is_violation_valid (l_v.item) then
260     -- Make sure a list for this class exists in the hash table:
261     rule_violations.put (create {SORTED_TWO_WAY_LIST [CA_RULE_VIOLATION]}.make, l_v.item.affected_class)
262     -- Add the violation.
263     rule_violations.at (l_v.item.affected_class).extend (l_v.item)
264     -- Log it.
265     l_csv_writer.add_line (l_v.item.csv_line)
266     end
267     end
268     end
269    
270     l_csv_writer.close_file
271    
272     clear_classes_to_analyze
273    
274     is_running := False
275     completed_actions.call ([a_exceptions])
276     completed_actions.wipe_out
277     end
278    
279     is_violation_valid (a_viol: attached CA_RULE_VIOLATION): BOOLEAN
280     -- Is the violation `a_viol' valid under the current settings
281     -- such as the rule ignore list of a class, or the library or
282     -- non-library status of a class?
283     local
284     l_affected_class: CLASS_C
285     l_rule: CA_RULE
286     do
287     l_affected_class := a_viol.affected_class
288     l_rule := a_viol.rule
289    
290     Result := True
291    
292     if ignoredby.has (l_affected_class)
293     and then (ignoredby.at (l_affected_class)).has (l_rule.id) then
294     Result := False
295     end
296    
297     if (not l_rule.checks_library_classes) and then library_class.at (l_affected_class) then
298     Result := False
299     end
300    
301     if (not l_rule.checks_nonlibrary_classes) and then nonlibrary_class.at (l_affected_class) then
302     Result := False
303     end
304     end
305    
306     classes_to_analyze: LINKED_SET [CLASS_C]
307     -- List of classes that shall be analyzed.
308    
309     system_wide_check: BOOLEAN
310     -- Shall the whole system be analyzed?
311    
312     completed_actions: ACTION_SEQUENCE [TUPLE [ITERABLE [TUPLE [detachable EXCEPTION, CLASS_C]]]]
313     -- List of procedures to call when analysis has completed.
314    
315     frozen rota: detachable ROTA_S
316     -- Accesses the rota service.
317     local
318     l_service_consumer: SERVICE_CONSUMER [ROTA_S]
319     do
320     create l_service_consumer
321     if attached l_service_consumer.service as l_service and then l_service.is_interface_usable then
322     Result := l_service
323     end
324     end
325    
326     is_severity_enabled (a_severity: attached CA_RULE_SEVERITY): BOOLEAN
327     do
328     Result := (attached {CA_HINT} a_severity and settings.are_hints_enabled.value)
329     or else (attached {CA_SUGGESTION} a_severity and settings.are_suggestions_enabled.value)
330     or else (attached {CA_WARNING} a_severity and settings.are_warnings_enabled.value)
331     or else (attached {CA_ERROR} a_severity and settings.are_errors_enabled.value)
332     end
333    
334     output_actions: ACTION_SEQUENCE [TUPLE [READABLE_STRING_GENERAL]]
335     -- Will be called whenever there is a message to output.
336    
337     feature {NONE} -- Class-wide Options (From Indexing Clauses)
338    
339     extract_indexes (a_class: attached CLASS_C)
340     -- Extracts options from the indexing clause of class `a_class'.
341     local
342     l_ast: CLASS_AS
343     l_ignoredby: LINKED_LIST [STRING_32]
344     do
345     create l_ignoredby.make
346     l_ignoredby.compare_objects -- We want to compare the actual strings.
347     -- Reset the class flags.
348     library_class.force (False, a_class)
349     nonlibrary_class.force (False, a_class)
350     l_ast := a_class.ast
351    
352     if attached l_ast.internal_top_indexes as l_top then
353     search_indexing_tags (l_top, a_class, l_ignoredby)
354     end
355     if attached l_ast.internal_bottom_indexes as l_bottom then
356     search_indexing_tags (l_bottom, a_class, l_ignoredby)
357     end
358    
359     ignoredby.force (l_ignoredby, a_class)
360     end
361    
362     search_indexing_tags (a_clause: attached INDEXING_CLAUSE_AS; a_class: attached CLASS_C; a_ignoredby: attached LINKED_LIST [STRING_32])
363     -- Searches `a_clause' for settings relevant to code analysis.
364     local
365     l_item: STRING_32
366     do
367     across a_clause as ic loop
368     if ic.item.tag.name_32.is_equal ("ca_ignoredby") then
369     -- Class wants to ignore certain rules.
370     across ic.item.index_list as l_list loop
371     l_item := l_list.item.string_value_32
372     l_item.prune_all ('%"')
373     a_ignoredby.extend (l_item)
374     end
375     elseif ic.item.tag.name_32.is_equal ("ca_library") then
376     -- Class has information on whether it is a library class.
377     if not ic.item.index_list.is_empty then
378     l_item := ic.item.index_list.first.string_value_32
379     l_item.to_lower
380     l_item.prune_all ('%"')
381     if l_item.is_equal ("true") then
382     library_class.force (True, a_class)
383     elseif l_item.is_equal ("false") then
384     nonlibrary_class.force (True, a_class)
385     end
386     end
387     end
388     end
389     end
390    
391     ignoredby: HASH_TABLE [LINKED_LIST [STRING_32], CLASS_C]
392     -- Maps classes to lists of rules (rule IDs) the class wants to be ignored by.
393    
394     library_class, nonlibrary_class: HASH_TABLE [BOOLEAN, CLASS_C]
395     -- Stores classes that are marked as library or non-library classes.
396    
397     invariant
398     -- law_of_non_contradiction: one class must not be both a library_class and a nonlibrary_class
399    
400     end

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