Struct Differ 

pub struct Differ;

SBOM comparison engine.

Compares two SBOMs and produces a Diff describing the changes. Components are matched first by ID (purl), then by identity (name + ecosystem).

Implementations

impl Differ

pub fn diff(old: &Sbom, new: &Sbom, only: Option<&[Field]>) -> Diff

Compares two SBOMs and returns the differences.

Both SBOMs are normalized before comparison to ignore irrelevant differences like ordering or metadata timestamps.

Arguments

• old - The baseline SBOM
• new - The SBOM to compare against the baseline
• only - Optional filter to limit comparison to specific fields

Example

use sbom_diff::{Differ, Field};
use sbom_model::Sbom;

let old = Sbom::default();
let new = Sbom::default();

// Compare all fields
let diff = Differ::diff(&old, &new, None);

// Compare only version and license changes
let diff = Differ::diff(&old, &new, Some(&[Field::Version, Field::License]));