Places in code with 6 or more lines that are exactly the same.
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.
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."
Duplication Overall
- 39% duplication:
- 48,260 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 19,014 duplicated lines
- 54,188 duplicates
Duplication per Extension
Duplication per Component (primary)
Duplication Between Components (50+ lines)
Open 3D force graph...
Show more details on duplication between components...
From Component
--> To Component
Duplicated
Lines
File Pairs
Details
codegen/syntax (5%)
--> src/nodes (158%)
3389
338 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| codegen/syntax (5%) --> src/nodes (158%) |
3389 | 338 file pairs | details... |
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 83 | x 2 | codegen/syntaxcodegen/syntax | 62:200 (64%)60:198 (65%) | view | |
| 77 | x 2 | codegen/syntaxcodegen/syntax | 187:331 (34%)187:331 (34%) | view | |
| 75 | x 2 | codegen/syntaxcodegen/syntax | 187:375 (33%)187:373 (33%) | view | |
| 75 | x 2 | codegen/syntaxcodegen/syntax | 187:342 (33%)187:373 (33%) | view | |
| 75 | x 2 | codegen/syntaxcodegen/syntax | 187:342 (33%)187:375 (33%) | view | |
| 73 | x 2 | codegen/syntaxcodegen/syntax | 184:324 (33%)184:330 (33%) | view | |
| 62 | x 2 | codegen/syntaxcodegen/syntax | 62:149 (47%)62:149 (47%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 54 | x 2 | codegen/syntaxcodegen/syntax | 88:146 (24%)88:146 (24%) | view | |
| 53 | x 2 | codegen/syntaxcodegen/syntax | 86:143 (24%)86:143 (24%) | view | |
| 53 | x 2 | codegen/syntaxcodegen/syntax | 86:143 (24%)86:143 (24%) | view | |
| 53 | x 2 | codegen/syntaxcodegen/syntax | 86:143 (24%)86:143 (24%) | view | |
| 44 | x 2 | codegen/syntaxcodegen/syntax | 62:110 (34%)62:110 (34%) | view | |
| 44 | x 2 | codegen/syntaxcodegen/syntax | 62:110 (34%)64:112 (33%) | view | |
| 44 | x 2 | codegen/syntaxcodegen/syntax | 62:110 (34%)64:112 (33%) | view | |
| 43 | x 2 | codegen/syntaxcodegen/syntax | 38:102 (67%)41:105 (64%) | view | |
| 43 | x 2 | codegen/syntaxcodegen/syntax | 38:102 (67%)40:104 (65%) | view | |
| 43 | x 2 | codegen/syntaxcodegen/syntax | 41:105 (64%)40:104 (65%) | view | |
| 43 | x 2 | codegen/syntaxcodegen/syntax | 62:109 (33%)64:111 (33%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 187:262 (17%)187:262 (17%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 187:262 (17%)187:262 (17%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 187:262 (17%)187:262 (17%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 68:112 (30%)66:110 (31%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 187:262 (17%)187:262 (17%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 66:110 (31%)68:112 (30%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 187:262 (17%)187:262 (17%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 68:112 (30%)68:112 (30%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 68:112 (30%)68:112 (30%) | view | |
| 40 | x 2 | codegen/syntaxcodegen/syntax | 187:262 (17%)187:262 (17%) | view | |
| 39 | x 2 | codegen/syntaxcodegen/syntax | 184:258 (17%)184:262 (17%) | view | |
| 39 | x 2 | codegen/syntaxcodegen/syntax | 184:262 (17%)184:264 (17%) | view | |
| 37 | x 2 | codegen/syntaxcodegen/syntax | 50:90 (38%)50:90 (38%) | view | |
| 35 | x 2 | codegen/syntaxcodegen/syntax | 50:88 (37%)50:88 (37%) | view | |
| 34 | x 2 | codegen/syntaxcodegen/syntax | 61:98 (26%)62:99 (26%) | view | |
| 34 | x 2 | codegen/syntaxcodegen/syntax | 61:98 (26%)64:101 (26%) | view | |
| 31 | x 2 | codegen/syntaxcodegen/syntax | 92:126 (14%)93:127 (14%) | view | |
| 31 | x 2 | codegen/syntaxcodegen/syntax | 54:88 (33%)54:88 (33%) | view | |
| 31 | x 2 | codegen/syntaxcodegen/syntax | 92:126 (14%)93:127 (14%) | view | |
| 31 | x 2 | codegen/syntaxcodegen/syntax | 54:88 (32%)54:88 (33%) | view | |
| 31 | x 2 | codegen/syntaxcodegen/syntax | 92:126 (14%)93:127 (14%) | view | |
| 28 | x 2 | codegen/syntaxcodegen/syntax | 83:114 (15%)82:113 (15%) | view | |
| 27 | x 2 | codegen/syntaxcodegen/syntax | 54:84 (27%)54:84 (28%) | view |
Duplicated Units
The list of top 42 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 66 | x 3 | codegen/syntaxcodegen/syntaxcodegen/syntax | 40:107 40:107 40:107 | view | |
| 66 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 42:109 42:109 42:109 42:109 42:109 | view | |
| 46 | x 2 | codegen/syntaxcodegen/syntax | 36:83 34:81 | view | |
| 46 | x 2 | codegen/syntaxcodegen/syntax | 36:83 36:83 | view | |
| 46 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 36:83 34:81 34:81 36:83 | view | |
| 46 | x 2 | codegen/syntaxcodegen/syntax | 34:81 34:81 | view | |
| 36 | x 2 | codegen/syntaxcodegen/syntax | 31:68 31:68 | view | |
| 36 | x 2 | codegen/syntaxcodegen/syntax | 31:68 31:68 | view | |
| 36 | x 2 | codegen/syntaxcodegen/syntax | 31:68 31:68 | view | |
| 36 | x 2 | codegen/syntaxcodegen/syntax | 31:68 31:68 | view | |
| 22 | x 2 | codegen/syntaxcodegen/syntax | 30:53 28:51 | view | |
| 20 | x 2 | codegen/syntaxcodegen/syntax | 93:114 91:112 | view | |
| 19 | x 2 | codegen/syntaxcodegen/syntax | 94:114 94:114 | view | |
| 12 | x 2 | codegen/syntaxcodegen/syntax | 265:278 265:278 | view | |
| 11 | x 3 | codegen/syntaxcodegen/syntaxcodegen/syntax | 65:77 64:76 62:74 | view | |
| 10 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 156:167 156:167 156:167 159:170 | view | |
| 10 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 191:202 191:202 191:202 194:205 | view | |
| 10 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 226:237 226:237 226:237 229:240 | view | |
| 10 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 267:278 261:272 265:276 264:275 | view | |
| 10 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 302:313 296:307 300:311 299:310 | view | |
| 10 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 159:170 159:170 159:170 159:170 159:170 | view | |
| 10 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 194:205 194:205 194:205 194:205 194:205 | view | |
| 10 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 229:240 229:240 229:240 229:240 229:240 | view | |
| 10 | x 3 | codegen/syntaxcodegen/syntaxcodegen/syntax | 265:276 265:276 265:276 | view | |
| 10 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 313:324 346:357 302:313 344:355 302:313 | view | |
| 9 | x 2 | codegen/syntaxcodegen/syntax | 144:154 138:148 | view | |
| 9 | x 2 | codegen/syntaxcodegen/syntax | 178:188 178:188 | view | |
| 9 | x 2 | codegen/syntaxcodegen/syntax | 212:222 213:223 | view | |
| 9 | x 2 | codegen/syntaxcodegen/syntax | 21:31 21:31 | view | |
| 9 | x 2 | codegen/syntaxcodegen/syntax | 21:31 21:31 | view | |
| 8 | x 4 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 110:119 110:119 110:119 109:118 | view | |
| 8 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 112:121 112:121 112:121 112:121 112:121 | view | |
| 7 | x 2 | codegen/syntaxcodegen/syntax | 99:107 98:106 | view | |
| 6 | x 3 | codegen/syntaxcodegen/syntaxcodegen/syntax | 84:91 83:90 81:88 | view | |
| 6 | x 3 | codegen/syntaxcodegen/syntaxcodegen/syntax | 86:93 84:91 83:90 | view | |
| 6 | x 2 | codegen/syntaxcodegen/syntax | 84:91 92:99 | view | |
| 6 | x 5 | codegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntaxcodegen/syntax | 82:89 86:93 84:91 84:91 86:93 | view | |
| 6 | x 3 | codegen/syntaxcodegen/syntaxcodegen/syntax | 86:93 86:93 86:93 | view | |
| 6 | x 2 | codegen/syntaxcodegen/syntax | 84:91 84:91 | view | |
| 6 | x 2 | codegen/syntaxcodegen/syntax | 149:156 149:156 | view | |
| 6 | x 113 | codegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokens... | 12:19 12:19 12:19 12:19 12:19 12:19 12:19 12:19 12:19 12:19 ... | view | |
| 6 | x 25 | codegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokenscodegen/tokens... | 12:19 12:19 14:21 14:21 12:19 12:19 12:19 17:24 12:19 14:21 ... | view |