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//! `Cyclomatic` implementation for Bash.
#![allow(clippy::wildcard_imports, clippy::enum_glob_use)]
#![allow(
clippy::cast_precision_loss,
clippy::cast_possible_truncation,
clippy::cast_sign_loss
)]
use super::*;
use crate::lang_helpers::bash::bash_test_connective;
impl Cyclomatic for BashCode {
fn compute<'a>(
node: &Node<'a>,
code: &'a [u8],
ancestors: Ancestors<'a, '_>,
stats: &mut Stats,
) {
match node.kind_id().into() {
// Standard-only: individual case arms (matches C-family `case:`
// treatment — only arms contribute, not the container). The
// bare-wildcard arm `*)` is Bash's analogue of the C-family
// `default:` and is excluded from the standard count, matching
// every other switch-bearing language. A multi-value pattern
// (`a|b)`, `*|b)`) is NOT bare and still counts. Closes #211.
Bash::CaseItem | Bash::CaseItem2 if !bash_case_item_is_bare_wildcard(node, code) => {
stats.cyclomatic += 1.;
}
// Modified-only: the case…esac container collapses all arms
// into one decision point.
Bash::CaseStatement => {
stats.cyclomatic_modified += 1.;
}
// Both standard and modified. `TernaryExpression` is the
// arithmetic ternary inside `(( … ))` / `$(( … ))` — the only
// ternary form Bash has, and a decision point in every sibling
// that has one (#1268). The pinned grammar emits only kind 223
// in every arithmetic context; the `TernaryExpression2` alias
// is listed defensively per grammar-dispatch §1, following the
// ObjC `BinaryExpression | BinaryExpression2` precedent, and
// pinned unreachable by
// `bash_ternary_expression_alias_is_unreachable`.
Bash::IfStatement
| Bash::ElifClause
| Bash::ForStatement
| Bash::CStyleForStatement
| Bash::WhileStatement
| Bash::TernaryExpression
| Bash::TernaryExpression2
| Bash::AMPAMP
| Bash::PIPEPIPE => {
stats.cyclomatic += 1.;
stats.cyclomatic_modified += 1.;
}
// `[ … ]` spells `&&` / `||` as `-a` / `-o`, a decision each
// like the `[ … ] && [ … ]` and `[[ … && … ]]` twins (#1536).
Bash::TestOperator
if ancestors
.parent(node)
.is_some_and(|parent| bash_test_connective(node, &parent, code).is_some()) =>
{
stats.cyclomatic += 1.;
stats.cyclomatic_modified += 1.;
}
_ => {}
}
}
}