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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | 1x 1x 7x 7x 7x 7x 2x 2x 7x 1x 1x 4x 4x 4x 7x 7x | /**
* Rust cacheKey implementation.
*
* Produces `rs-${cargoLockHash || cargoTomlHash || 'no-config'}`.
*
* Prefers Cargo.lock over Cargo.toml when both are present —
* Cargo.lock holds the resolved dependency graph, so changing a dep
* version (which can change call-graph topology indirectly through
* trait-impl changes) reliably flips the key. Cargo.toml is the
* fallback when Cargo.lock isn't checked in (the typical pattern for
* library crates).
*
* Per contract invariant I-6: pure function of `(config content)`.
* Per I-8: emits `rs-`, distinct from `ts-` and `py-`.
*/
import { createHash } from 'node:crypto';
import { existsSync, readFileSync } from 'node:fs';
import type { CacheKeyInput } from '@opensip-tools/graph';
export function cacheKey(input: CacheKeyInput): string {
return `rs-${hashConfig(input.configPathAbs)}`;
}
function hashConfig(configPathAbs: string | undefined): string {
if (configPathAbs === undefined || configPathAbs.length === 0) {
return 'no-config';
}
if (!existsSync(configPathAbs)) {
return `missing:${configPathAbs}`;
}
try {
const content = readFileSync(configPathAbs, 'utf8');
return createHash('sha256').update(content).digest('hex').slice(0, 16);
} catch {
/* v8 ignore next */
return `unreadable:${configPathAbs}`;
}
}
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