Crate sim_lib_scene 

Scene value model and codec:scene for the SIM Web-UI (WEBUI_4).

A Scene is a portable graphical intermediate representation that is itself a SIM value: a tree of scene nodes built on kernel Value/Expr using open maps with a kind tag, never a closed kernel enum. The browser is the only thing that turns a Scene into pixels; everything upstream just produces Scene values. Because a Scene is a value it round-trips through codec:scene, can be snapshotted, diffed, golden-tested, sent over the wire, or read by an agent.

This crate provides:

• the scene node kinds (open metadata, not a closed enum);
• a model of builders, accessors, and fail-closed validation;
• a lossless canonical text form for the scene-data subset of Expr;
• the codec codec:scene (a domain codec) plus scene node shapes;
• a diff()/apply pair over scenes (scene diffs are themselves values).

Re-exports

pub use build::RESERVED_DATA_KEYS;

pub use build::badge;

pub use build::box_;

pub use build::data_map;

pub use build::stack;

pub use build::text_node;

pub use codec::SceneCodec;

pub use codec::SceneCodecLib;

pub use codec::scene_codec_symbol;

pub use diff::apply;

pub use diff::diff;

pub use kinds::SCENE_KINDS;

pub use kinds::SCENE_NAMESPACE;

pub use kinds::is_known_kind;

pub use kinds::scene_kind;

pub use model::SceneError;

pub use model::node;

pub use model::node_kind;

pub use model::validate_scene;

pub use shapes::SceneNodeShape;

pub use shapes::SceneShape;

pub use shapes::scene_shape_specs;

pub use shapes::scene_shape_symbol;

Modules

build

Scene construction helpers.

codec

codec:scene: the domain codec for Scene values.

diff

Scene diff and patch application.

kinds

Scene node kinds.

model

Scene value model: builders, accessors, and fail-closed validation.

shapes

Shapes for scene node kinds.

text

Lossless canonical text for the scene-data subset of Expr.

Structs

SceneDescriptor

A validated Scene wrapped as a runtime Citizen object.

Functions

map

Build a plain data map from string-keyed entries (keys become core-less symbols). Use node to build a tagged scene node. A map value from string-keyed entries (keys become unqualified symbols).

scene_descriptor_class_symbol

Returns the class symbol for the Scene descriptor Citizen.

sym

An unqualified symbol value: Expr::Symbol(Symbol::new(name)).