|Web Site| Lizard

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Lizard is an extensible Cyclomatic Complexity Analyzer for many programming languages including C/C++ (doesn't require all the header files or Java imports). It also does copy-paste detection (code clone detection/code duplicate detection) and many other forms of static code analysis.

A list of supported languages:

• C# (C Sharp)
• C/C++ (works with C++14)
• COBOL
• Dart
• Erlang
• F# (see F# analysis <docs/fsharp-analysis.md>_)
• Fortran
• GDScript
• Golang
• Java
• JavaScript (With ES6 and JSX)
• Kotlin
• Lua
• Objective-C
• OCaml (see OCaml analysis <docs/ocaml-analysis.md>_)
• Perl
• PHP
• PL/SQL
• Python
• R
• Ruby
• Rust
• Scala
• Solidity
• Structured Text (St)
• Swift
• TTCN-3
• TypeScript (With TSX)
• VueJS
• Zig

By default lizard will search for any source code that it knows and mix all the results together. This might not be what you want. You can use the "-l" option to select language(s).

It counts

• the nloc (lines of code without comments),
• CCN (cyclomatic complexity number),
• token count of functions,
• parameter count of functions.

You can set limits for CCN (-C) and the number of parameters (-a). Functions that exceed these limits will generate warnings. The exit code of lizard will be non-zero if there are warnings.

This tool actually calculates how complex the code 'looks' rather than how complex the code really 'is'. People will need this tool because it's often very hard to get all the included folders and files right when they are complicated. But we don't really need that kind of accuracy for cyclomatic complexity.

It requires Python 3.8 or above. The test suite runs on Python 3.8, 3.9, 3.10, 3.11, 3.12, 3.13 and 3.14, on Linux and Windows, in continuous integration; other versions are not verified.

This is the beginning of the README. Read the rest at the original. Read the full README ↗