Struct noodles_vcf::Writer

pub struct Writer<W> { /* private fields */ }

A VCF writer.

Examples

use noodles_vcf::{
    self as vcf,
    header::record::value::{map::Contig, Map},
    record::Position,
};

let mut writer = vcf::Writer::new(Vec::new());

let header = vcf::Header::builder()
    .add_contig(Map::<Contig>::new("sq0".parse()?))
    .build();

writer.write_header(&header)?;

let record = vcf::Record::builder()
    .set_chromosome("sq0".parse()?)
    .set_position(Position::try_from(1)?)
    .set_reference_bases("A".parse()?)
    .build()?;

writer.write_record(&record);

let expected = b"##fileformat=VCFv4.3
##contig=<ID=sq0>
#CHROM\tPOS\tID\tREF\tALT\tQUAL\tFILTER\tINFO
sq0\t1\t.\tA\t.\t.\t.\t.
";

assert_eq!(&writer.get_ref()[..], &expected[..]);

Implementations

impl<W> Writer<W> where
    W: Write, 

pub fn new(inner: W) -> Self

Creates a VCF writer.

Examples

use noodles_vcf as vcf;
let writer = vcf::Writer::new(Vec::new());

pub fn get_ref(&self) -> &W

Returns a reference to the underlying writer.

Examples

use noodles_vcf as vcf;
let writer = vcf::Writer::new(Vec::new());
assert!(writer.get_ref().is_empty());

pub fn get_mut(&mut self) -> &mut W

Returns a mutable reference to the underlying writer.

Examples

use noodles_vcf as vcf;
let mut writer = vcf::Writer::new(Vec::new());
assert!(writer.get_mut().is_empty());

pub fn into_inner(self) -> W

Unwraps and returns the underlying writer.

Examples

use noodles_vcf as vcf;
let writer = vcf::Writer::new(Vec::new());
assert!(writer.into_inner().is_empty());

pub fn write_header(&mut self, header: &Header) -> Result<()>

Writes a VCF header.

Examples

use noodles_vcf as vcf;

let mut writer = vcf::Writer::new(Vec::new());

let header = vcf::Header::default();
writer.write_header(&header)?;

pub fn write_record(&mut self, record: &Record) -> Result<()>

Writes a VCF record.

Examples

use noodles_vcf::{self as vcf, record::Position};

let record = vcf::Record::builder()
    .set_chromosome("sq0".parse()?)
    .set_position(Position::try_from(1)?)
    .set_reference_bases("A".parse()?)
    .build()?;

let mut writer = vcf::Writer::new(Vec::new());
writer.write_record(&record)?;

Trait Implementations

impl<W: Debug> Debug for Writer<W>

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

Formats the value using the given formatter.