apple / swift-docc
Duplication

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.
Learn more...
Duplication Overall
  • 3% duplication:
    • 22,234 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 684 duplicated lines
  • 46 duplicates
system3% (684 lines)
Duplication per Extension
swift2% (597 lines)
html100% (87 lines)
Duplication per Component (primary)
Sources/SwiftDocC/Model4% (270 lines)
Sources/SwiftDocC/Infrastructure1% (98 lines)
Sources/SwiftDocC/Semantics1% (54 lines)
Sources/SwiftDocC/Indexing3% (51 lines)
Sources/SwiftDocC/Utility4% (42 lines)
Sources/DocCDocumentation/DocCDocumentation.docc100% (29 lines)
Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc100% (29 lines)
Sources/SwiftDocC/SwiftDocC.docc100% (29 lines)
Sources/SwiftDocCUtilities/Action2% (22 lines)
Sources/SwiftDocC/DocumentationService3% (18 lines)
Sources/SwiftDocCUtilities/ArgumentParsing2% (14 lines)
ROOT3% (12 lines)
Sources/SwiftDocCUtilities/Utility4% (10 lines)
Sources/SwiftDocC/Coverage1% (6 lines)
Sources/DocCDocumentation0% (0 lines)
Sources/SwiftDocC/Benchmark0% (0 lines)
Sources/SwiftDocC/Checker0% (0 lines)
Sources/SwiftDocC/Converter0% (0 lines)
Sources/SwiftDocC/LinkTargets0% (0 lines)
Sources/SwiftDocC/Servers0% (0 lines)
Sources/SwiftDocCTestUtilities0% (0 lines)
Sources/SwiftDocCUtilities0% (0 lines)
Sources/SwiftDocCUtilities/PreviewServer0% (0 lines)
Sources/SwiftDocCUtilities/Transformers0% (0 lines)
Sources/docc0% (0 lines)
Sources/generate-symbol-graph0% (0 lines)

Duplication Between Components (50+ lines)

G Sources/SwiftDocC/SwiftDocC.docc Sources/SwiftDocC/SwiftDocC.docc Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc Sources/SwiftDocC/SwiftDocC.docc--Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc 58 Sources/DocCDocumentation/DocCDocumentation.docc Sources/DocCDocumentation/DocCDocumentation.docc Sources/DocCDocumentation/DocCDocumentation.docc--Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc 58 Sources/DocCDocumentation/DocCDocumentation.docc--Sources/SwiftDocC/SwiftDocC.docc 58

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Show more details on duplication between components...
Longest Duplicates
The list of 20 longest duplicates.
See data for all 46 duplicates...
Size#FoldersFilesLinesCode
38 x 2 Sources/SwiftDocC/Model/Rendering
Sources/SwiftDocC/Model/Rendering
DocumentationContentRenderer.swift
RenderNodeTranslator+Swift.swift
 482:551 (12%)
17:86 (97%)
 view
18 x 2 Sources/SwiftDocC/Model/Rendering/References
Sources/SwiftDocC/Model/Rendering/References
ImageReference.swift
VideoReference.swift
 87:119 (33%)
95:126 (31%)
 view
17 x 2 Sources/SwiftDocC/SwiftDocC.docc
Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc
header.html
header.html
 10:27 (100%)
10:27 (100%)
 view
17 x 2 Sources/DocCDocumentation/DocCDocumentation.docc
Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc
header.html
header.html
 10:27 (100%)
10:27 (100%)
 view
17 x 2 Sources/DocCDocumentation/DocCDocumentation.docc
Sources/SwiftDocC/SwiftDocC.docc
header.html
header.html
 10:27 (100%)
10:27 (100%)
 view
12 x 2 Sources/DocCDocumentation/DocCDocumentation.docc
Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc
footer.html
footer.html
 10:23 (100%)
10:23 (100%)
 view
12 x 2 Sources/DocCDocumentation/DocCDocumentation.docc
Sources/SwiftDocC/SwiftDocC.docc
footer.html
footer.html
 10:23 (100%)
10:23 (100%)
 view
12 x 2 Sources/SwiftDocC/SwiftDocC.docc
Sources/SwiftDocCUtilities/SwiftDocCUtilities.docc
footer.html
footer.html
 10:23 (100%)
10:23 (100%)
 view
11 x 2 Sources/SwiftDocC/Indexing/Navigator
Sources/SwiftDocC/Indexing/Navigator
NavigatorTree.swift
NavigatorTree.swift
 311:329 (4%)
353:371 (4%)
 view
11 x 2 Sources/SwiftDocC/Model/Rendering/References
Sources/SwiftDocC/Model/Rendering/References
ImageReference.swift
VideoReference.swift
 67:82 (20%)
75:89 (18%)
 view
10 x 2 Sources/SwiftDocC/Utility/FoundationExtensions
Sources/SwiftDocCUtiliti...ty/FoundationExtensions
URL+Relative.swift
URL+Relative.swift
 13:31 (100%)
13:31 (100%)
 view
10 x 2 Sources/SwiftDocC/Model/Rendering/References
Sources/SwiftDocC/Model/Rendering/References
TopicRenderReference.swift
TopicRenderReference.swift
 138:147 (5%)
201:210 (5%)
 view
9 x 2 Sources/SwiftDocC/Model/Rendering/Variants
Sources/SwiftDocC/Model/Rendering/Variants
VariantCollection+Symbol.swift
VariantCollection+Symbol.swift
 138:151 (4%)
170:183 (4%)
 view
9 x 2 Sources/SwiftDocC/Utility
Sources/SwiftDocC/Utility
Synchronization.swift
Synchronization.swift
 66:74 (17%)
99:107 (17%)
 view
9 x 2 Sources/SwiftDocC/Model/Rendering/References
Sources/SwiftDocC/Model/Rendering/References
ImageReference.swift
VideoReference.swift
 50:60 (16%)
56:66 (15%)
 view
9 x 2 Sources/SwiftDocC/Docume...Models/Services/Convert
Sources/SwiftDocC/Docume...Models/Services/Convert
ConvertRequest.swift
ConvertRequest.swift
 148:156 (10%)
190:198 (10%)
 view
8 x 2 Sources/SwiftDocC/Semant...p;Purpose Analyses
Sources/SwiftDocC/Semant...p;Purpose Analyses
DeprecatedArgument.swift
HasArgumentOfType.swift
 45:56 (27%)
93:104 (16%)
 view
8 x 2 Sources/SwiftDocC/Model/Rendering
Sources/SwiftDocC/Model/Rendering
RenderNodeTranslator.swift
RenderNodeTranslator.swift
 180:191 (<1%)
753:764 (<1%)
 view
8 x 2 Sources/SwiftDocC/Indexing/Navigator
Sources/SwiftDocCUtilities/Action/Actions/Convert
NavigatorIndex.swift
Indexer.swift
 1018:1027 (1%)
90:99 (17%)
 view
8 x 2 Sources/SwiftDocC/Infrastructure/Topic Graph
Sources/SwiftDocC/Infrastructure/Topic Graph
TopicGraph.swift
TopicGraph.swift
 252:262 (5%)
272:282 (5%)
 view
Duplicated Units
The list of top 2 duplicated units.
See data for all 2 unit duplicates...
Size#FoldersFilesLinesCode
9 x 2 Sources/SwiftDocC/Semant...p;Purpose Analyses
Sources/SwiftDocC/Semant...p;Purpose Analyses
HasExactlyOne.swift
HasExactlyOne.swift
 227:236 
238:247 
 view
9 x 2 Sources/SwiftDocC/Utility/FoundationExtensions
Sources/SwiftDocCUtiliti...ty/FoundationExtensions
URL+Relative.swift
URL+Relative.swift
 18:32 
18:32 
 view