Struct LexBuiltinsHandler 

pub struct LexBuiltinsHandler { /* private fields */ }

Composite handler for the lex.* namespace.

Registry::register_namespace accepts one handler per namespace; the composite shape lets every lex.* built-in live under a single namespace registration while keeping per-label logic isolated.

Implementations across hooks:

• on_resolve: only LexIncludeHandler (#532) — the lex.tabular.* / lex.media.* / lex.metadata.* labels return the default Ok(None) because the legacy from_lex direction in lex-babel already hydrates the AST.
• on_format: implemented for lex.tabular.table and lex.media.{image,video,audio} (#570 Phase 4b). lex.include is resolve-only and falls back; lex.metadata.* flows through the render hook + legacy frontmatter promotion.

Implementations

impl LexBuiltinsHandler

pub fn new(loader: Arc<dyn Loader + Send + Sync>, config: ResolveConfig) -> Self

Trait Implementations

impl LexHandler for LexBuiltinsHandler

fn on_format( &self, ctx: &FormatCtx, ) -> Result<Option<LexAnnotationOut>, HandlerError>

Phase 4b of #570: emit the canonical Lex-source shape for the built-in lex.tabular.* and lex.media.* labels.

The verbatim labels round-trip as :: lex.<family>.<kind> :: closers with the body text and parameters carried verbatim from the supplied WireNode::Verbatim. Anything else (e.g. lex.include, metadata labels, unrecognised labels) returns Ok(None) so the host falls back to its built-in formatter.

fn on_resolve(&self, ctx: &LabelCtx) -> Result<Option<WireNode>, HandlerError>

Returns an AST replacement subtree, which the host splices into the parent in place of the labelled node. Fires during the resolve phase, before analyse. Ok(None) leaves the original node in place.

fn on_label(&self, _ctx: &LabelCtx)

Informational notification fired during the analyse phase. No response is expected. Use this for handlers that maintain external state (caches, indices, link graphs).

fn on_validate(&self, _ctx: &LabelCtx) -> Result<Vec<Diagnostic>, HandlerError>

Returns diagnostics for a labelled node. Fires during analyse, after resolve.

fn on_render( &self, _ctx: &LabelCtx, _fmt: Format, ) -> Result<Option<RenderOut>, HandlerError>

Returns the labelled node’s representation in a target format. Fires during lexd convert or library-driven rendering. Ok(None) falls back to default rendering of the underlying node.

fn on_hover(&self, _ctx: &LabelCtx) -> Result<Option<Hover>, HandlerError>

Returns hover content for a labelled node. Fires in response to textDocument/hover LSP requests.

fn on_completion( &self, _ctx: &LabelCtx, ) -> Result<Vec<Completion>, HandlerError>

Returns completion items for a position inside a labelled node’s params or body. Fires in response to textDocument/completion.

fn on_code_action( &self, _ctx: &LabelCtx, ) -> Result<Vec<CodeAction>, HandlerError>

Returns code actions for a labelled node. Fires in response to textDocument/codeAction.