Enum StructuralRecord 

#[non_exhaustive]
pub enum StructuralRecord {
    DocInfo(DocInfoRecord),
    Outline(OutlineRecord),
    Annotation(AnnotationRecord),
    Dest(DestRecord),
    PageOverride(PageOverrideRecord),
    ViewerPrefs(ViewerPrefsRecord),
    Metadata(MetadataRecord),
    Form(FormRecord),
    Embed(EmbedRecord),
    OutputIntent(OutputIntentRecord),
}

One accumulated structural record. Each variant corresponds to a PDF catalog / info / page entry the writer knows how to emit.

Marked #[non_exhaustive]: cross-crate match sites need a wildcard arm so future record types (Tagged PDF, etc.) land additively.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

DocInfo(DocInfoRecord)

/DOCINFO — entries to merge into the PDF Info dictionary.

Outline(OutlineRecord)

/OUT — one bookmark entry, contributing to the document’s outline tree.

Annotation(AnnotationRecord)

/ANN — one page annotation (link, sticky note, free-text, …).

Dest(DestRecord)

/DEST — one named destination contributing to /Names /Dests.

PageOverride(PageOverrideRecord)

/PAGE (single-page override) or /PAGES (document-wide default for keys that aren’t already overridden on a specific page).

ViewerPrefs(ViewerPrefsRecord)

/VIEWERPREFERENCES — catalog-level viewer preferences plus the /PageLayout and /PageMode overrides that live directly on /Catalog rather than nested under /ViewerPreferences.

Metadata(MetadataRecord)

/Metadata — XMP metadata stream attached to /Catalog.

Form(FormRecord)

/FORM — document-level AcroForm dict. Multiple records merge last-wins key-by-key; the /Fields array is implicit (built from /Widget annotations at write time).

Embed(EmbedRecord)

/EMBED — one embedded file attachment. Multiple records accumulate; the writer assembles a /Names /EmbeddedFiles name tree and references it from /Catalog.

OutputIntent(OutputIntentRecord)

/OUTPUTINTENT — one /Catalog /OutputIntents entry naming the destination color rendering condition for this PDF (PDF/X / PDF/A). The writer emits one PDF object per record plus an array referencing them all from /Catalog /OutputIntents. Multiple records produce multiple intents — the array’s order matches the record order, and consumers traditionally honor the first matching subtype.

Trait Implementations

impl Clone for StructuralRecord

fn clone(&self) -> StructuralRecord

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StructuralRecord

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.