Struct Reader 

pub struct Reader { /* private fields */ }

Implementations

impl Reader

pub fn new(env: Env, path: String, _opts: Option<ReaderOptions>) -> Result<Self>

pub fn header(&self, env: Env) -> Result<Reference<Header>>

pub fn has_index(&self) -> bool

pub fn query( &self, region_or_chrom: String, start0: Option<u32>, end0: Option<u32>, ) -> AsyncTask<QueryTask>

pub fn next(&self) -> AsyncTask<NextTask>

pub fn next_batch_async( &self, size: Option<u32>, ) -> Result<AsyncTask<NextBatchTask>>

Read the next batch of variants asynchronously. Returns an array of Variant objects. Empty array means EOF. More efficient than next() for bulk iteration as it avoids creating {done, value} wrapper objects for each variant.

pub fn next_sync(&self, env: Env) -> Result<Object<'static>>

pub fn next_batch_sync(&self, size: Option<u32>) -> Result<Vec<Variant>>

Read the next batch of variants synchronously. Returns an array of Variant objects. Empty array means EOF. This is more efficient than calling nextSync() repeatedly when processing many variants, as it avoids creating {done, value} wrapper objects for each variant.

pub fn close(&self)

Trait Implementations

impl FromNapiMutRef for Reader

unsafe fn from_napi_mut_ref( env: napi_env, napi_val: napi_value, ) -> Result<&'static mut Self>

Safety

impl FromNapiRef for Reader

unsafe fn from_napi_ref( env: napi_env, napi_val: napi_value, ) -> Result<&'static Self>

Safety

impl JavaScriptClassExt for Reader

fn into_instance<'scope>( self, env: &'scope Env, ) -> Result<ClassInstance<'scope, Self>>

fn into_reference(self, env: Env) -> Result<Reference<Self>>

fn instance_of<'env, V: JsValue<'env>>(env: &Env, value: &V) -> Result<bool>

impl ObjectFinalize for Reader

fn finalize(self, env: Env) -> Result<(), Error>

impl ToNapiValue for Reader

unsafe fn to_napi_value(env: napi_env, val: Reader) -> Result<napi_value>

Safety

fn into_unknown(self, env: &Env) -> Result<Unknown<'_>, Error>

impl TypeName for &Reader

fn type_name() -> &'static str

fn value_type() -> ValueType

impl TypeName for &mut Reader

fn type_name() -> &'static str

fn value_type() -> ValueType

impl TypeName for Reader

fn type_name() -> &'static str

fn value_type() -> ValueType

impl ValidateNapiValue for &Reader

unsafe fn validate(env: napi_env, napi_val: napi_value) -> Result<napi_value>

Safety

impl ValidateNapiValue for &mut Reader

unsafe fn validate(env: napi_env, napi_val: napi_value) -> Result<napi_value>

Safety