Struct BitSequence

pub struct BitSequence {
    pub bitmap: Option<Vec<u8>>,
    pub padding: Option<i32>,
}

A sequence of bits, encoded in a byte array. Each byte in the bitmap byte array stores 8 bits of the sequence. The only exception is the last byte, which may store 8 or fewer bits. The padding defines the number of bits of the last byte to be ignored as “padding”. The values of these “padding” bits are unspecified and must be ignored. To retrieve the first bit, bit 0, calculate: (bitmap[0] & 0x01) != 0. To retrieve the second bit, bit 1, calculate: (bitmap[0] & 0x02) != 0. To retrieve the third bit, bit 2, calculate: (bitmap[0] & 0x04) != 0. To retrieve the fourth bit, bit 3, calculate: (bitmap[0] & 0x08) != 0. To retrieve bit n, calculate: (bitmap[n / 8] & (0x01 << (n % 8))) != 0. The “size” of a BitSequence (the number of bits it contains) is calculated by this formula: (bitmap.length * 8) - padding.

This type is not used in any activity, and only used as part of another schema.

Fields

bitmap: Option<Vec<u8>>

The bytes that encode the bit sequence. May have a length of zero.

padding: Option<i32>

The number of bits of the last byte in bitmap to ignore as “padding”. If the length of bitmap is zero, then this value must be 0. Otherwise, this value must be between 0 and 7, inclusive.

Trait Implementations

impl Clone for BitSequence

fn clone(&self) -> BitSequence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BitSequence

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

Formats the value using the given formatter.

impl Default for BitSequence

fn default() -> BitSequence

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for BitSequence

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for BitSequence

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Part for BitSequence