Enum SectionKind 

#[repr(u8)]
pub enum SectionKind {
    NameTable = 1,
    Variables = 2,
    ListDefs = 3,
    ListItems = 4,
    Externals = 5,
    Containers = 6,
    LineTables = 7,
    Labels = 8,
    ListLiterals = 9,
    AddressPaths = 10,
    LiteralPool = 11,
    StructShapes = 12,
    EffectRows = 13,
    Visibility = 14,
    AliasTable = 15,
    FrameShapes = 16,
    DebugInfo = 17,
    LineVariantGroups = 18,
}

Identifies a section within an .inkb file.

Variants

NameTable = 1

Variables = 2

ListDefs = 3

ListItems = 4

Externals = 5

Containers = 6

LineTables = 7

Labels = 8

ListLiterals = 9

AddressPaths = 10

LiteralPool = 11

T1b LiteralPool (docs/format-v4-rfc.md §2): content-hash deduplicated constant values referenced by PushLiteral(idx). Additive alongside ListLiterals — see the T1b-2 PR description for why the RFC’s ListLiterals absorption is deferred, not done here.

StructShapes = 12

TM-4 StructShapes (docs/typed-mode-spec.md §6): one entry per declared STRUCT — shape id, name, ordered field names. Reserved (count always 0) through 4.0; this PR lands the section’s real encoding at the format layer only — nothing in the compiler emits a non-empty table yet (see the PR description’s scope note).

EffectRows = 13

T2-3 EffectRows (docs/effects-spec.md §11, docs/format-v4-rfc.md §2): the DefinitionId → row table of factored effect rows — one per knot/stitch (the resume-scheduling estimate, §12.1). Section-locally versioned (one prefix byte) so the row encoding can grow without a format-wide bump — the reservation this graduates was made for exactly this, so no VERSION bump accompanies it. Always present (possibly empty). Was reserved (count-0) through v5; this slice lands the real encoding and first emission (rows are inert metadata the runtime does not yet read).

Visibility = 14

M-2b Visibility (docs/modules-spec.md §4, docs/format-spec.md): the DefinitionIds of every #@private definition, sorted ascending. Omitted entirely when empty (the common all-public case), so public-only stories stay byte-identical for that section — the section is purely additive and self-framed in the offset table. 0x0D is claimed by EffectRows, so this takes the next free tag.

AliasTable = 15

M-3 AliasTable (docs/modules-spec.md §5): old→new DefinitionId rename records from #@was(old_name) directives. Section-locally versioned (one prefix byte) so the row encoding can grow without a format-wide bump. Always present (possibly empty) from v5 onward. 0x0E was claimed by Visibility (M-2b), so this takes the next free tag.

FrameShapes = 16

FS-3 FrameShapes (docs/flow-suspension-spec.md §4/§11): one name-keyed frame shape per await site — the static crossing-locals description the runtime spills/restores around a park. Section-locally versioned (one prefix byte) so the shape encoding can grow without a format-wide bump. Omitted entirely when empty (the common case — and, behind the E052 fence, the only case today, since no await compiles yet), so all existing stories stay byte-identical and no VERSION bump is needed. 0x0F was claimed by AliasTable, so this takes the next free tag.

DebugInfo = 17

D6 DebugInfo (docs/debugger-spec.md §2, issue #3184): the bytecode-offset → source-range map, plus its section-local file table. Section-locally versioned (one prefix byte) so the entry encoding can grow (e.g. the reserved NodeId column, §1.3) without a format-wide bump. Omitted entirely when not requested — the ship-policy default (§1.2): a release-exported story never carries this section, so every existing story stays byte-identical and no VERSION bump is needed. 0x10 was claimed by FrameShapes, so this takes the next free tag — the test this graduates, from_u8_rejects_unclaimed_section_tag, is updated alongside this variant (not deleted) to pin the new next-free tag (0x12).

LineVariantGroups = 18

Stage 1 of the shared-alternatives track (issue #3273, docs/decision-log.md 2026-08-29): crate::LineVariantGroup records tying runs of consecutive line-table entries back to one authored line whose inline alternatives were enumerated at recognition time. Section-locally versioned (one prefix byte) so the record encoding can grow without a format-wide bump. Omitted entirely when empty — nothing emits a non-empty table until the stage-2 flip (#3274), so every existing story stays byte-identical and no VERSION bump is needed. 0x11 is claimed by DebugInfo, so this takes the next free tag.

Trait Implementations

impl Clone for SectionKind

fn clone(&self) -> SectionKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SectionKind

impl Debug for SectionKind

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

Formats the value using the given formatter.

impl Eq for SectionKind

impl Hash for SectionKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SectionKind

fn eq(&self, other: &SectionKind) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SectionKind