Struct rustpython_vm::protocol::BufferDescriptor

pub struct BufferDescriptor {
    pub len: usize,
    pub readonly: bool,
    pub itemsize: usize,
    pub format: Cow<'static, str>,
    pub dim_desc: Vec<(usize, isize, isize)>,
}

Fields

len: usize

product(shape) * itemsize bytes length, but not the length for obj_bytes() even is contiguous

readonly: bool

itemsize: usize

format: Cow<'static, str>

dim_desc: Vec<(usize, isize, isize)>

(shape, stride, suboffset) for each dimension

Implementations

impl BufferDescriptor

pub fn simple(bytes_len: usize, readonly: bool) -> Self

pub fn format( bytes_len: usize, readonly: bool, itemsize: usize, format: Cow<'static, str> ) -> Self

pub fn validate(self) -> Self

pub fn ndim(&self) -> usize

pub fn is_contiguous(&self) -> bool

pub fn fast_position(&self, indices: &[usize]) -> isize

this function do not check the bound panic if indices.len() != ndim

pub fn position( &self, indices: &[isize], vm: &VirtualMachine ) -> PyResult<isize>

panic if indices.len() != ndim

pub fn for_each_segment<F>(&self, try_conti: bool, f: F)where F: FnMut(Range<isize>),

pub fn zip_eq<F>(&self, other: &Self, try_conti: bool, f: F)where F: FnMut(Range<isize>, Range<isize>) -> bool,

zip two BufferDescriptor with the same shape

pub fn is_zero_in_shape(&self) -> bool

Trait Implementations

impl Clone for BufferDescriptor

fn clone(&self) -> BufferDescriptor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BufferDescriptor

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

Formats the value using the given formatter.