Module format 

FMIR binary format definition and parsers.

Defines the on-disk layout for Forma Module IR files:

• 16-byte header (magic, version, flags, source hash)
• 32-byte section table (4 sections x 8 bytes each)
• Opcode, SlotType, IslandTrigger, PropsMode enums
• SlotEntry and IslandEntry structs

All multi-byte integers are little-endian.

Structs

IrHeader

FMIR file header — the first 16 bytes of every .fmir file.

IslandEntry

An island declaration in the island table.

SectionDescriptor

A single section descriptor: offset + size (both u32, little-endian).

SectionTable

Section table — four section descriptors immediately following the header.

SlotEntry

A slot declaration in the slot table.

Enums

IrError

Errors that can occur when parsing FMIR binary data.

IslandTrigger

When an island should be hydrated.

Opcode

Bytecode opcodes for the FMIR instruction stream.

PropsMode

How island props are delivered.

SlotSource

Where the slot value originates at runtime.

SlotType

Data type hint for a slot entry.

Constants

HEADER_SIZE

Size of the file header in bytes.

IR_VERSION

Current IR format version.

MAGIC

Magic bytes identifying an FMIR file.

SECTION_TABLE_SIZE

Size of the section table in bytes (4 sections x 8 bytes).