Enum BloodType 

pub enum BloodType {
    APositive,
    ANegative,
    BPositive,
    BNegative,
    ABPositive,
    ABNegative,
    OPositive,
    ONegative,
}

ABO + RhD blood type used as supporting evidence in worker matcher.

Blood type is a weak positive signal and a strong negative signal:

• Many people share a blood type (≈38% of the US population is O+), so agreement alone is not strong evidence of a match.
• Two records with disagreeing blood types almost certainly refer to different people — blood type does not change over a lifetime (modulo bone-marrow transplant edge cases).

The matcher therefore weights blood type at the same low level as gender by default (MatchConfig::blood_type_weight = 0.05) but the per-field score in MatchBreakdown::blood_type_score is surfaced for downstream consumers that want to flag disagreement explicitly.

Blood type is not an identifying field for Worker::validate, and it is not consulted by deterministic_match — disagreement is a soft signal, not a binary disqualifier.

JSON

Variants serialise as their canonical short form ("A+", "O-", "AB+", etc.) via #[serde(rename = …)].

use worker_matcher::BloodType;
assert_eq!(serde_json::to_string(&BloodType::APositive).unwrap(), "\"A+\"");
let back: BloodType = serde_json::from_str("\"AB-\"").unwrap();
assert_eq!(back, BloodType::ABNegative);

Parsing

BloodType::parse accepts the canonical short forms plus the most common textual layouts found in real EMR data:

use worker_matcher::BloodType;
assert_eq!(BloodType::parse("A+"),         Some(BloodType::APositive));
assert_eq!(BloodType::parse("a positive"), Some(BloodType::APositive));
assert_eq!(BloodType::parse("AB neg"),     Some(BloodType::ABNegative));
assert_eq!(BloodType::parse("O-"),         Some(BloodType::ONegative));
assert_eq!(BloodType::parse("0+"),         Some(BloodType::OPositive));  // zero/O confusion
assert_eq!(BloodType::parse(""),           None);
assert_eq!(BloodType::parse("Z+"),         None);

Variants

APositive

A positive (A+).

ANegative

A negative (A−).

BPositive

B positive (B+).

BNegative

B negative (B−).

ABPositive

AB positive (AB+). Universal red-cell recipient.

ABNegative

AB negative (AB−). Rare; universal-plasma donor.

OPositive

O positive (O+). Most common worldwide.

ONegative

O negative (O−). Universal red-cell donor.

Implementations

impl BloodType

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

Canonical short form: "A+", "A-", "B+", "B-", "AB+", "AB-", "O+", "O-".

use worker_matcher::BloodType;
assert_eq!(BloodType::APositive.as_str(),  "A+");
assert_eq!(BloodType::ABNegative.as_str(), "AB-");

pub fn parse(s: &str) -> Option<BloodType>

Parse a blood-type string, accepting canonical short forms as well as the common textual layouts seen in EMR / HL7 data. Returns None for unparseable, empty, or rare-phenotype input; consumers that need to preserve a rare phenotype should store the raw string elsewhere.

Accepted shapes (case-insensitive, whitespace tolerated):

• Canonical: A+, A-, B+, B-, AB+, AB-, O+, O-.
• Word forms: A positive, A pos, A negative, A neg.
• With sign-separator: A_pos, A-neg, AB +.
• With zero/O confusion: 0+ is read as O+.

use worker_matcher::BloodType;
assert_eq!(BloodType::parse("O Negative"), Some(BloodType::ONegative));
assert_eq!(BloodType::parse("ab+"),        Some(BloodType::ABPositive));
assert_eq!(BloodType::parse("Bombay"),     None); // rare phenotype, not supported

Trait Implementations

impl Clone for BloodType

fn clone(&self) -> BloodType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BloodType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BloodType

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BloodType

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

Formats the value using the given formatter.

impl Hash for BloodType

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 BloodType

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for BloodType

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for BloodType

impl Eq for BloodType

impl StructuralPartialEq for BloodType