Crate leaf_core 

leaf-core — the frontend-neutral heart of leaf.

A Doc is a twig::Editor plus a byte-offset caret and selection: every mutation is one of twig’s offset-addressed ops, and the document stays a live, round-trippable AST the whole time you type into it. The wysiwyg module resolves that AST into a wysiwyg::VisualMap — rendered glyphs that each point back at the source byte they came from, so a caret can ride the visible text and step over hidden markup delimiters.

Nothing here depends on a UI toolkit. Glyphs carry a toolkit-agnostic Style, which a frontend crate (leaf-tui, and next leaf-gui) maps onto its own styling. Both frontends share this exact caret math, edit surface, and offset⇄position mapping — the split is what lets a GUI reuse the hard parts instead of re-deriving them.

Re-exports

pub use doc::Capabilities;

pub use doc::DiskState;

pub use doc::Doc;

pub use doc::FootnoteDef;

pub use doc::FootnoteRef;

pub use doc::InlineMarks;

pub use doc::Landing;

pub use doc::LineFlow;

pub use doc::MarkupMode;

pub use doc::View;

pub use style::Baseline;

pub use style::Role;

pub use style::Style;

pub use wysiwyg::BlockClass;

pub use wysiwyg::Boundary;

pub use wysiwyg::CodeBlockInfo;

pub use wysiwyg::ColorScheme;

pub use wysiwyg::Glyph;

pub use wysiwyg::MediaInfo;

pub use wysiwyg::MediaKind;

pub use wysiwyg::MediaSource;

pub use wysiwyg::TableCell;

pub use wysiwyg::TableInfo;

pub use wysiwyg::TableRow;

pub use wysiwyg::VRow;

pub use wysiwyg::VisualMap;

Modules

doc

The document model: a twig::Editor plus a byte-offset caret and selection.

style

A toolkit-neutral text style — the seam that lets one document model drive any frontend.

wysiwyg

The WYSIWYG view: render the document with its markup resolved, not shown — headings and code tagged with a typographic role (a frontend sizes or colours them; see crate::style), **bold** as real bold, # / ** / ` delimiters hidden — while keeping every visible glyph tied back to the source byte it came from.

Enums

Alignment

Table-cell alignment: written via Builder::add_cell, read back on FlatNode::alignment.

BlockContainerKind

A block container for Editor::toggle_block_container — the toolbar’s Quote / Bulleted list / Numbered list buttons. Where a BlockKind rewrites one block’s leading marker, a container prefixes every line of a range and nests. Djot and Markdown spell all three; other formats yield Error::UnsupportedFormat.

BlockKind

A block target for Editor::set_block — the toolbar’s H1…H6 / Body switch.

Format

Every format Twig can parse — the input axis, as opposed to Target, which is where output bytes can go.

Gesture

One authoring gesture, named with whatever kind it takes — the question Format::supports answers.

InlineKind

An inline mark for Editor::wrap_range / Editor::toggle_inline — a rich editor’s Bold / Italic / Code / … buttons. Markdown spells only InlineKind::Strong, InlineKind::Emph, and InlineKind::Verbatim; Djot spells all of them. An unsupported kind yields Error::UnsupportedFormat.