A Go tool for detecting code clones in Go source files using suffix trees on serialized ASTs.
Dupl is a command-line tool written in Go that detects code clones in Go source files. It identifies duplicate or structurally similar code segments by analyzing abstract syntax trees (ASTs) and ignoring literal values, helping developers find refactoring opportunities to reduce redundancy.
Go developers and teams looking to improve code quality by identifying and eliminating duplicate code patterns in their codebases.
It provides a fast, AST-based approach specifically for Go, with configurable thresholds and multiple output formats, making it a lightweight alternative to more general-purpose clone detection tools.
a tool for code clone detection
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Uses serialized ASTs with a suffix tree algorithm to ignore literal values, effectively identifying structural code patterns for refactoring, as highlighted in the README's method description.
Specifically designed for Go source files, ensuring accurate handling of language syntax and idioms, making it a tailored solution for Go developers.
Allows setting a minimum token sequence threshold to filter out insignificant clones, providing flexibility for different project needs, as shown in the -t flag usage.
Supports multiple formats including HTML with code fragments and plumbing output for script integration, enabling easy review and automation, as detailed in the flags section.
The README explicitly states that dupl can report 'false positives' due to its AST-based method, requiring manual validation of matches, which adds overhead.
Only works with Go source files, making it ineffective for polyglot projects or teams using multiple programming languages, limiting its versatility.
Operates solely as a command-line tool without GUI or direct IDE integration, which may hinder adoption for developers preferring interactive, real-time feedback.