Struct DecodedField 

pub struct DecodedField {
    pub info: &'static FieldInfo,
    pub value: FieldValue,
    pub bit_offset: Option<u32>,
    pub bit_length: Option<u32>,
    pub repeat_index: Option<u32>,
    pub repeat_set: u8,
    /* private fields */
}

One decoded field.

Schema metadata (id, name, order, unit, resolution, precision, part_of_primary_key) is read through accessor methods that delegate to Self::info — the corresponding FieldInfo entry in the static schema. Runtime values that the decoder owns (bit_offset, bit_length, repeat_*, value) stay as direct fields because they can legitimately differ from the schema’s declared values (repeating-set iterations shift the offset; VARIABLE fields can be byte-aligned wider than the schema declares).

VARIABLE and DYNAMIC_FIELD_VALUE fields override unit / resolution / precision with metadata drawn from a target FieldInfo or LookupFieldTypeValue; those overrides live in a boxed [FieldOverrides] sidecar — None in the common path, so the 98 % of fields that don’t override only carry an 8-byte null pointer in the slot.

Fields

info: &'static FieldInfo

Pointer back into the static FieldInfo this field was decoded against.

value: FieldValue

bit_offset: Option<u32>

Bit offset of this field within the parent payload. May differ from info.bit_offset for fields inside repeating sets (each iteration shifts) and for variable-length fields. None for synthetic fields.

bit_length: Option<u32>

Effective bit length on the wire. May differ from info.bit_length for STRING_LAU / VARIABLE / DYNAMIC_FIELD_VALUE fields (resolved at decode time).

repeat_index: Option<u32>

Zero-based iteration index for fields inside a repeating set; None for non-repeating fields.

repeat_set: u8

Which RepeatingFieldSet this field belongs to: 1 → emitted under JSON "list", 2 → under "list2". 0 for non-repeating.

Implementations

impl DecodedField

pub fn order(&self) -> u8

canboat.json field Order (1-based schema position).

pub fn id(&self) -> &'static str

canboat.json field Id (camelCase identifier).

pub fn name(&self) -> &'static str

canboat.json field Name (human label).

pub fn unit(&self) -> Option<&'static str>

Display unit. Overridden by VARIABLE / DYNAMIC_FIELD_VALUE resolution; otherwise from FieldInfo::unit.

pub fn as_f64_in(&self, target: &str) -> Option<f64>

This field’s numeric value expressed in target unit, converting from the field’s own unit when they differ (see [crate::engine::units::convert_unit]). A unitless field is returned as-is; a numeric field whose unit has no known bridge to target yields None.

This lets a consumer that needs a fixed unit stay correct no matter which schema (crate::engine::Units) produced the field — e.g. NMEA 0183 always asks angles for "deg" and temperatures for "C", and gets them whether the stream was SI or Metric.

pub fn resolution(&self) -> Option<f64>

Display resolution.

pub fn precision(&self) -> u8

Decimal precision override (0 = derive from resolution).

pub fn part_of_primary_key(&self) -> bool

true if this field participates in the PGN’s primary key.

Trait Implementations

impl Clone for DecodedField

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DecodedField

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

Formats the value using the given formatter.