Struct LayerDetector 

pub struct LayerDetector {
    pub max_layers: u8,
    pub min_nodes_per_layer: u32,
}

Architectural layer detector.

Runs a multi-phase pipeline: Tarjan SCC → BFS depth assignment → layer grouping + merging → utility-node detection → violation detection.

Fields

max_layers: u8

Maximum number of layers to produce; adjacent layers are merged until this cap is satisfied.

min_nodes_per_layer: u32

Minimum node count per layer; tiny layers are absorbed into neighbours.

Implementations

impl LayerDetector

pub fn new(max_layers: u8, min_nodes_per_layer: u32) -> Self

Create a detector with the given parameters.

Parameters

• max_layers: upper bound on the number of output layers.
• min_nodes_per_layer: layers smaller than this are merged into an adjacent layer.

pub fn with_defaults() -> Self

Create a detector using DEFAULT_MAX_LAYERS and DEFAULT_MIN_NODES_PER_LAYER.

pub fn detect( &self, graph: &Graph, scope: Option<&str>, node_type_filter: &[NodeType], exclude_tests: bool, naming_strategy: &str, ) -> M1ndResult<LayerDetectionResult>

Detect architectural layers from graph topology.

Algorithm: Tarjan SCC → BFS depth assignment → layer grouping + merging → utility-node detection → violation detection.

Parameters

• graph: the connectivity graph to analyse.
• scope: optional path prefix to restrict which nodes are considered.
• node_type_filter: if non-empty, only nodes of these types are included.
• exclude_tests: if true, nodes whose labels contain “test” are dropped.
• naming_strategy: one of "heuristic", "path_prefix", or "pagerank".

Errors

Returns M1ndError::EmptyGraph if no candidate nodes match the filters.

pub fn layer_health( &self, graph: &Graph, result: &LayerDetectionResult, level: u8, ) -> M1ndResult<LayerHealth>

Compute cohesion, coupling, and violation-density metrics for one layer.

Parameters

• graph: the connectivity graph (must be the same graph used for detect).
• result: the LayerDetectionResult to pull layer membership from.
• level: zero-based layer level to analyse.

Errors

Returns M1ndError::LayerNotFound { level } if no layer with that level exists in result.