cccc-core 0.1.0

Language-agnostic Cognitive (SonarSource) and Cyclomatic (McCabe) complexity.

This crate computes complexity over a normalized intermediate representation ([ir::Node]) instead of any particular language's AST. A language adapter (such as cccc-typescript) lowers its parse tree into Vec<ir::Node>, and [engine::analyze] scores it. All scoring rules live here, so adding a language means writing an adapter — not reimplementing the metrics.

use cccc_core::ir::Node;
use cccc_core::engine::analyze;

// `if (cond) {}` inside `fn f` — one cognitive point, cyclomatic base 1 + 1.
let f = Node::Function {
    name: "f".into(),
    kind: "function".into(),
    line: 1,
    body: vec![Node::Branch { test: vec![], then: vec![], alternate: None }],
};
let report = analyze("example.ts", &[f], vec![]);
assert_eq!(report.functions[0].cognitive, 1);
assert_eq!(report.functions[0].cyclomatic, 2);