Struct noodles_vcf::record::info::Info

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pub struct Info(_);

Expand description

VCF record information fields (INFO).

Implementations

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impl Info

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pub fn try_from_str(s: &str, infos: &Infos) -> Result<Self, ParseError>

Parses raw VCF record info.

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pub fn len(&self) -> usize

Returns the number of info fields.

Examples

use noodles_vcf::record::Info;
let info = Info::default();
assert_eq!(info.len(), 0);

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pub fn is_empty(&self) -> bool

Returns whether there are any info fields.

Examples

use noodles_vcf::record::Info;
let info = Info::default();
assert!(info.is_empty());

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pub fn get(&self, key: &Key) -> Option<&Field>

Returns a reference to the field with the given key.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
let info = Info::try_from(vec![ns, dp.clone()])?;

assert_eq!(info.get(&Key::TotalDepth), Some(&dp));
assert!(info.get(&Key::AlleleFrequencies).is_none());

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pub fn get_mut(&mut self, key: &Key) -> Option<&mut Field>

Returns a mutable reference to the field with the given key.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
let mut info = Info::try_from(vec![ns, dp])?;

if let Some(dp) = info.get_mut(&Key::TotalDepth) {
    *dp.value_mut() = Some(Value::Integer(8));
}

assert_eq!(
    info.get(&Key::TotalDepth).map(|field| field.value()),
    Some(Some(&Value::Integer(8)))
);

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pub fn get_index(&self, i: usize) -> Option<&Field>

Returns a reference to the field at the given index.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
let info = Info::try_from(vec![ns, dp.clone()])?;

assert_eq!(info.get_index(1), Some(&dp));
assert!(info.get_index(5).is_none());

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pub fn get_index_mut(&mut self, i: usize) -> Option<&mut Field>

Returns a mutable reference to the field at the given index.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
let mut info = Info::try_from(vec![ns, dp])?;

if let Some(dp) = info.get_index_mut(1) {
    *dp.value_mut() = Some(Value::Integer(8));
}

assert_eq!(
    info.get_index(1).map(|field| field.value()),
    Some(Some(&Value::Integer(8)))
);

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pub fn insert(&mut self, field: Field) -> Option<Field>

Inserts a field into the info.

This uses the field key as the key and field as the value.

If the key already exists in the map, the existing field is replaced by the new one, and the existing field is returned.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let mut info = Info::try_from(vec![ns])?;
assert_eq!(info.len(), 1);

let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
info.insert(dp.clone());

assert_eq!(info.len(), 2);
assert_eq!(info.get(&Key::TotalDepth), Some(&dp));

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pub fn keys(&self) -> impl Iterator<Item = &Key>

Returns an iterator over all keys.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
let info = Info::try_from(vec![ns, dp.clone()])?;

let mut keys = info.keys();

assert_eq!(keys.next(), Some(&Key::SamplesWithDataCount));
assert_eq!(keys.next(), Some(&Key::TotalDepth));
assert!(keys.next().is_none());

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pub fn values(&self) -> impl Iterator<Item = &Field>

Returns an iterator over all fields.

Examples

use noodles_vcf::record::{info::{field::{Key, Value}, Field}, Info};

let ns = Field::new(Key::SamplesWithDataCount, Some(Value::Integer(2)));
let dp = Field::new(Key::TotalDepth, Some(Value::Integer(13)));
let info = Info::try_from(vec![ns.clone(), dp.clone()])?;

let mut values = info.values();

assert_eq!(values.next(), Some(&ns));
assert_eq!(values.next(), Some(&dp));
assert!(values.next().is_none());