Module model 

Core data model: graph, nodes, edges.

Structs

Attr

One attribute row inside an entity block: type name [PK|FK|UK] ["comment"].

Class

A class box: name header + fields compartment + methods compartment.

ClassDiagram

UML class diagram (classDiagram header).

ClassRel

A relationship between two classes. Normalised so the end glyph (triangle / diamond / arrow) always sits at the to end.

Edge

Entity

A database entity, rendered as a table.

ErDiagram

Entity-Relationship diagram (erDiagram header).

Graph

Parsed graph, ready for layout.

Journey

A user-journey diagram (journey header): an ordered list of sections, each holding scored tasks. actors is the de-duplicated set of every participant, in first-appearance order — its index is the stable color key for the legend and per-task dots.

JourneySection

A named group of consecutive tasks (section X). Tasks before the first section land in one leading section with an empty name.

JourneyTask

One step: Task name: score: Actor1, Actor2. score is clamped to 1..=5 (satisfaction); actors are indices into Journey::actors.

Member

One field or method row.

MindNode

One mindmap node. text may contain \n (from <br/>) for a multi-line label. branch is the index of the depth-1 ancestor this node descends from (its colored branch); None for the root.

Mindmap

A mindmap (mindmap header): a single-rooted tree of text nodes whose hierarchy comes from source indentation. nodes[0] is always the root; every other node has a parent. Parse order is preserved, so sibling order (and thus layout order) is stable across renders.

Node

NodeStyle

Custom per-node styling from Mermaid style / classDef lines. None fields fall back to the shape’s theme color (see crate::style::shape_style).

Participant

One lifeline column: participant A [as Label] / actor A.

PieChart

Pie chart (pie header). Slices keep source order; a duplicate label keeps one slice whose value is the LAST one written.

PieSlice

One pie data row: "Quoted Label" : value (non-negative).

Relation

Relationship between two entities. card_from describes the from side, card_to the to side (crow’s foot notation).

SequenceDiagram

Sequence diagram (sequenceDiagram header). Items keep source order — the layout is one row per item, top-down.

SubEdge

An edge where at least one endpoint is a subgraph (CF --> VPC). Kept apart from Edge so the flat node→node path stays untouched; consumed only by the clustered scene.

Subgraph

A subgraph ... end block: a titled cluster of nodes, possibly nested. Membership is by node index; nested members belong to the child, not the parent (walk parent links for the chain).

Enums

Card

Relationship cardinality on one side.

Direction

Flow direction of the diagram.

Document

One parsed Mermaid document of any supported diagram type. Produced by crate::parser::parse_document.

EdgeKind

Edge line style.

End

One endpoint of an edge that touches a subgraph — either a regular node or a whole subgraph (its cluster box).

FrameKind

Kind of a loop / opt / alt / par frame.

Key

Attribute key marker.

MindShape

Node outline in a mindmap, from the wrapper around its text.

NoteSide

Where a note attaches.

RelKind

UML relationship type (determines line style + end glyph).

SeqHead

Arrowhead at the target end of a message.

SeqItem

One statement of a sequence diagram, in source order.

Shape

Node shape.

Visibility

UML member visibility, shown as a leading glyph.