uber / arcanist - Duplication

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

9% duplication:

38,088 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
3,509 duplicated lines

219 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 219 duplicates...

Size	#	Folders	Files	Lines	Code
74	x 2	src/unit/engine src/unit/engine	Phpunit6TestEngine.php PhpunitTestEngine.php	108:278 (57%) 105:275 (57%)	view
57	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	257:332 (4%) 257:332 (8%)	view
55	x 2	src/lint/linter/xhpast/rules src/lint/linter/xhpast/rules	ArcanistReusedAsIteratorXHPASTLinterR... ArcanistUndeclaredVariableXHPASTLinte...	30:125 (39%) 72:167 (33%)	view
52	x 2	src/lint/linter/xhpast/rules src/lint/linter/xhpast/rules	ArcanistReusedAsIteratorXHPASTLinterR... ArcanistUndeclaredVariableXHPASTLinte...	133:245 (37%) 196:308 (31%)	view
46	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	119:180 (3%) 148:209 (6%)	view
40	x 2	src/unit/engine src/unit/engine	ConfigurablePytestTestEngine.php PytestTestEngine.php	28:97 (57%) 48:117 (49%)	view
37	x 2	src/lint/linter src/lint/linter	ArcanistScriptAndRegexLinter.php UberSingleScriptAndRegexLinter.php	315:389 (29%) 305:379 (30%)	view
37	x 2	src/unit/parser src/unit/parser	ArcanistPhpunit6TestResultParser.php ArcanistPhpunitTestResultParser.php	82:144 (46%) 99:161 (33%)	view
28	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	562:595 (2%) 578:610 (4%)	view
27	x 2	src/upload src/workflow	ArcanistFileUploader.php ArcanistUploadWorkflow.php	224:262 (18%) 128:166 (21%)	view
27	x 2	src/land src/workflow	ArcanistGitLandEngine.php ArcanistStackWorkflow.php	812:840 (4%) 435:463 (4%)	view
26	x 2	src/unit/engine src/unit/engine	Phpunit6TestEngine.php PhpunitTestEngine.php	11:56 (20%) 8:53 (20%)	view
26	x 2	src/lint/linter src/lint/linter	ArcanistPuppetLintLinter.php UberPupetLintLinter.php	100:136 (30%) 68:104 (39%)	view
23	x 2	src/lint/linter/xhpast/rules src/lint/linter/xhpast/rules	ArcanistPHPCompatibilityXHPASTLinterR... ArcanistPHPCompatibilityXHPASTLinterR...	189:216 (6%) 235:262 (6%)	view
23	x 2	src/lint/linter src/lint/linter	ArcanistScriptAndRegexLinter.php UberSingleScriptAndRegexLinter.php	207:245 (18%) 191:229 (19%)	view
20	x 2	src/workflow src/workflow	ArcanistStackWorkflow.php ArcanistSubmitWorkflow.php	170:197 (3%) 301:328 (8%)	view
20	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistSubmitWorkflow.php	727:751 (1%) 193:217 (8%)	view
20	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistSubmitWorkflow.php	141:168 (1%) 301:328 (8%)	view
20	x 2	src/unit/engine src/unit/engine	ConfigurableGolangTestEngine.php PytestTestEngine.php	66:101 (33%) 107:142 (24%)	view
19	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	238:256 (1%) 234:252 (2%)	view
19	x 2	src/lint/linter/xhpast/rules src/lint/linter/xhpast/rules	ArcanistBraceFormattingXHPASTLinterRu... ArcanistBraceFormattingXHPASTLinterRu...	20:42 (26%) 78:98 (26%)	view
16	x 2	src/lint/linter src/lint/linter	ArcanistScriptAndRegexLinter.php UberSingleScriptAndRegexLinter.php	252:285 (12%) 242:275 (13%)	view
16	x 2	src/lint/engine src/unit/engine	ArcanistConfigurationDrivenLintEngine... ArcanistConfigurationDrivenUnitTestEn...	154:175 (11%) 187:209 (11%)	view
16	x 2	src/unit/engine src/unit/engine	ConfigurableGolangTestEngine.php NoseTestEngine.php	72:94 (26%) 150:172 (15%)	view
16	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	220:235 (1%) 217:232 (2%)	view
16	x 2	src/land src/workflow	ArcanistGitLandEngine.php ArcanistStackWorkflow.php	849:869 (2%) 470:489 (2%)	view
16	x 2	src/unit/engine src/unit/engine	NoseTestEngine.php PytestTestEngine.php	150:172 (15%) 113:135 (19%)	view
15	x 2	src/unit/engine src/unit/engine	ConfigurableGolangTestEngine.php PytestTestEngine.php	29:51 (25%) 51:73 (18%)	view
15	x 2	src/unit/engine src/unit/engine	ConfigurableGolangTestEngine.php ConfigurablePytestTestEngine.php	29:51 (25%) 31:53 (21%)	view
13	x 2	src/unit/engine src/unit/engine	UberRevertPlanTestEngine.php UberTestPlanTestEngine.php	34:54 (39%) 31:50 (41%)	view
13	x 2	src/unit/engine src/unit/engine	TAPTestEngine.php UberCustomCommandTestEngine.php	47:63 (14%) 18:33 (48%)	view
13	x 2	src/workflow src/workflow	ArcanistDiffWorkflow.php ArcanistStackWorkflow.php	1519:1531 (<1%) 284:296 (1%)	view
13	x 2	src/workflow src/workflow	ArcanistDiffWorkflow.php ArcanistLandWorkflow.php	1519:1531 (<1%) 284:296 (<1%)	view
13	x 2	src/lint/linter src/lint/linter	ArcanistTextLinter.php LintTrapLinter.php	36:53 (6%) 85:102 (13%)	view
12	x 2	src/workflow src/workflow	ArcanistStackWorkflow.php ArcanistSubmitWorkflow.php	530:549 (1%) 123:142 (4%)	view
12	x 2	src/lint/linter src/lint/linter	ArcanistExternalLinter.php ArcanistGoFmtLinter.php	268:279 (5%) 35:46 (17%)	view
12	x 2	src/workflow src/workflow	ArcanistAmendWorkflow.php ArcanistLandWorkflow.php	26:47 (7%) 137:158 (<1%)	view
12	x 2	src/lint/linter/xhpast/rules src/lint/linter/xhpast/rules	ArcanistReusedAsIteratorXHPASTLinterR... ArcanistUndeclaredVariableXHPASTLinte...	12:29 (8%) 12:70 (7%)	view
12	x 2	src/lint/linter src/lint/linter	ArcanistExternalLinter.php UberStaticAnalysisLinter.php	446:460 (5%) 236:250 (7%)	view
12	x 2	src/lint/linter src/lint/linter/xhpast	ArcanistBaseXHPASTLinter.php ArcanistXHPASTLinterRule.php	232:243 (10%) 262:273 (8%)	view
12	x 2	src/workflow src/workflow	ArcanistAmendWorkflow.php ArcanistStackWorkflow.php	26:47 (7%) 166:187 (1%)	view
12	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	19:30 (<1%) 14:25 (1%)	view
12	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistStackWorkflow.php	447:463 (<1%) 388:404 (1%)	view
12	x 2	src/lint/engine src/unit/engine	ArcanistLintEngine.php ArcanistUnitTestEngine.php	66:83 (3%) 42:60 (23%)	view
11	x 2	src/listener src/listener	UberArcPostPushListener.php UberArcPrePushEventListener.php	20:35 (73%) 22:37 (73%)	view
11	x 2	src/workflow src/workflow	ArcanistLandWorkflow.php ArcanistSubmitWorkflow.php	450:463 (<1%) 262:275 (4%)	view
11	x 2	src/lint/linter src/lint/linter	LintTrapLinter.php UberStandardLinter.php	137:149 (11%) 99:111 (15%)	view
11	x 2	src/land src/workflow	UberArcanistStackSubmitQueueEngine.php ArcanistPatchWorkflow.php	501:516 (3%) 278:293 (1%)	view
11	x 2	src/workflow src/workflow	ArcanistStackWorkflow.php ArcanistSubmitWorkflow.php	391:404 (1%) 262:275 (4%)	view
11	x 2	src/workflow src/workflow	ArcanistBulkPatchWorkflow.php ArcanistPatchWorkflow.php	210:225 (4%) 841:855 (1%)	view

Duplicated Units

The list of top 30 duplicated units.

See data for all 30 unit duplicates...

Size	#	Folders	Files	Lines	Code
63	x 2	src/workflow src/workflow	ArcanistStackWorkflow.php ArcanistLandWorkflow.php	263:333 263:333	view
40	x 2	src/unit/parser src/unit/parser	ArcanistPhpunitTestResultParser.php ArcanistPhpunit6TestResultParser.php	110:162 93:145	view
36	x 2	src/unit/engine src/unit/engine	Phpunit6TestEngine.php PhpunitTestEngine.php	201:251 198:248	view
28	x 2	src/lint/linter src/lint/linter	UberPupetLintLinter.php ArcanistPuppetLintLinter.php	68:105 100:137	view
24	x 2	src/unit/engine src/unit/engine	Phpunit6TestEngine.php PhpunitTestEngine.php	127:159 124:156	view
22	x 2	src/lint/linter src/lint/linter	UberSingleScriptAndRegexLinter.php ArcanistScriptAndRegexLinter.php	322:348 332:358	view
22	x 2	src/unit/engine src/unit/engine	Phpunit6TestEngine.php PhpunitTestEngine.php	257:281 254:278	view
16	x 2	src/lint/linter src/lint/linter	UberSingleScriptAndRegexLinter.php ArcanistScriptAndRegexLinter.php	360:380 370:390	view
15	x 2	src/lint src/unit	ArcanistLintMessage.php ArcanistUnitTestResult.php	135:153 32:49	view
13	x 2	src/listener src/listener	UberArcPostPushListener.php UberArcPrePushEventListener.php	20:37 22:39	view
13	x 3	src/workflow src/workflow src/workflow	ArcanistStackWorkflow.php ArcanistSubmitWorkflow.php ArcanistLandWorkflow.php	391:405 262:276 450:464	view
12	x 2	src/unit/engine src/unit/engine	UberRevertPlanTestEngine.php UberTestPlanTestEngine.php	37:55 34:51	view
11	x 5	src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter	UberPythonImportsLinter.php UberSingleScriptAndRegexLinter.php ESLintLinter.php ArcanistScriptAndRegexLinter.php ArcanistJSHintLinter.php	55:68 283:297 73:85 293:307 87:100	view
11	x 2	src/lint/linter/xhpast src/lint/linter	ArcanistXHPASTLinterRule.php ArcanistBaseXHPASTLinter.php	262:274 232:244	view
10	x 3	src/lint/linter src/lint/linter src/lint/linter	UberStandardLinter.php LintTrapLinter.php ArcanistJSHintLinter.php	38:50 44:56 52:65	view
10	x 3	src/lint/linter src/lint/linter src/lint/linter	ArcanistCpplintLinter.php ArcanistPEP8Linter.php ArcanistJSHintLinter.php	63:75 84:96 144:156	view
10	x 2	src/lint/linter src/lint/linter	UberPupetLintLinter.php ArcanistPuppetLintLinter.php	55:66 55:66	view
10	x 2	src/lint/linter/xhpast src/lint/linter	ArcanistXHPASTLinterRule.php ArcanistBaseXHPASTLinter.php	212:226 216:230	view
10	x 3	src/unit/engine src/unit/engine src/unit/engine	PytestTestEngine.php ConfigurablePytestTestEngine.php ConfigurableGolangTestEngine.php	51:64 31:44 29:42	view
9	x 2	src/lint/linter src/lint/linter	UberSingleScriptAndRegexLinter.php ArcanistScriptAndRegexLinter.php	299:310 309:320	view
9	x 2	src/lint/linter src/lint/linter	UberObjCStyleCheckLinter.php ArcanistTextLinter.php	43:54 34:45	view
8	x 8	src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter	UberPupetLintLinter.php ArcanistCppcheckLinter.php UberPuppetLinter.php ArcanistPuppetLintLinter.php ArcanistPhpcsLinter.php ArcanistPyLintLinter.php ArcanistRubyLinter.php ArcanistJscsLinter.php	37:47 34:44 41:51 37:47 72:82 37:47 34:44 34:44	view
7	x 2	src/lint/linter src/lint/linter	UberShellCheckLinter.php ArcanistHLintLinter.php	124:134 40:50	view
7	x 6	src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter	ArcanistRuboCopLinter.php ArcanistCoffeeLintLinter.php ArcanistPEP8Linter.php ArcanistFlake8Linter.php ArcanistPyFlakesLinter.php ArcanistCSSLintLinter.php	33:42 33:42 34:43 36:45 34:43 40:49	view
7	x 2	src/lint/linter src/lint/linter	ArcanistRuboCopLinter.php ArcanistCoffeeLintLinter.php	48:58 50:60	view
7	x 7	src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter src/lint/linter	ArcanistRuboCopLinter.php ArcanistSpellingLinter.php ArcanistCoffeeLintLinter.php ArcanistPuppetLintLinter.php ArcanistPhpcsLinter.php ArcanistPyLintLinter.php PrettierLinter.php	60:69 33:42 62:71 68:77 36:45 59:68 68:76	view
7	x 2	src/lint/linter src/lint/linter	ArcanistPuppetLintLinter.php ArcanistPyLintLinter.php	79:88 70:79	view
6	x 4	src/flow/workflow src/workflow src/workflow src/workflow	ICFlowWorkflow.php ArcanistHelpWorkflow.php ArcanistSetConfigWorkflow.php ArcanistGetConfigWorkflow.php	53:60 29:36 36:43 31:38	view
6	x 2	src/lint/linter src/lint/linter	ArcanistRuboCopLinter.php ArcanistCoffeeLintLinter.php	71:79 73:81	view
6	x 2	src/repository/api src/repository/api	ArcanistGitAPI.php ArcanistMercurialAPI.php	1322:1329 803:810	view