Struct Disassembler 

pub struct Disassembler<'a> { /* private fields */ }

MIG-guided disassembler — walks the MIG tree to emit segments in correct order.

Implementations

impl<'a> Disassembler<'a>

pub fn new(mig: &'a MigSchema) -> Disassembler<'a>

pub fn disassemble(&self, tree: &AssembledTree) -> Vec<DisassembledSegment>

Disassemble a tree into ordered segments following MIG sequence.

Emits segments in correct EDIFACT order:

1. Pre-group top-level segments (e.g., UNB, UNH, BGM, DTM)
2. Groups (recursively, in MIG order)
3. Post-group top-level segments (e.g., UNT, UNZ)

Uses MIG-guided ordering: walks the MIG schema tree and looks up matching data in the assembled tree. This handles both assembler output (already in MIG order) and reverse-mapped trees (may be in arbitrary order).

This is lenient: a group instance lacking its entry segment is emitted as-is. Use disassemble_checked for output built from BO4E that is meant to be sent.

pub fn disassemble_checked( &self, tree: &AssembledTree, ) -> Result<Vec<DisassembledSegment>, AssemblyError>

Like disassemble, but refuses a group instance that has content without its MIG entry segment.

The entry segment opens a group repetition (CCI for SG10, SEQ for SG8, NAD for SG12, …). Without it a receiver cannot assemble the group’s other segments — our own assembler skips them, so their data is lost on parse. The error names the first offending group; all of them are available through missing_entry_segments.

pub fn missing_entry_segments( &self, tree: &AssembledTree, ) -> Vec<MissingEntrySegment>

Every group instance in tree that carries content but lacks its MIG entry segment, in emission order.