Struct donet_core::dcswitch::DCSwitch

pub struct DCSwitch<'dc> {
    name: Option<String>,
    key: DCField<'dc>,
    cases: Vec<SwitchCase<'dc>>,
    default_case: Option<SwitchCase<'dc>>,
    case_fields: Vec<&'dc DCField<'dc>>,
    cases_by_value: HashMap<Vec<u8>, usize>,
}

Represents a DC Switch statement, which can appear inside a dclass declaration and represents two or more alternative unpacking schemes based on the first field read.

Fields

name: Option<String>

key: DCField<'dc>

cases: Vec<SwitchCase<'dc>>

default_case: Option<SwitchCase<'dc>>

case_fields: Vec<&'dc DCField<'dc>>

cases_by_value: HashMap<Vec<u8>, usize>

Implementations

impl<'dc> DCSwitch<'dc>

pub fn get_name(&self) -> Option<String>

Returns the optional identifier for this switch.

pub fn get_key_parameter(&self) -> &'dc DCField<'_>

Returns the key parameter on which the switch is based.

The value of this parameter in the record determines which one of the several cases within the switch will be used.

pub fn get_num_cases(&self) -> usize

Returns the number of different cases within the switch.

The legal values for case_index range from 0 to n_cases - 1.

pub fn get_case(&self, index: usize) -> Option<&'dc SwitchCase<'_>>

Returns case reference from given index wrapped in an Option.

pub fn get_default_case(&self) -> Option<&'dc SwitchCase<'_>>

Returns default case reference wrapped in an Option.

A default case is optional, so None can be returned.

pub fn get_case_index_by_value(&self, value: Vec<u8>) -> Option<usize>

Returns the index of the case with the given packed value.

None is returned if no case with that value is found.

pub fn apply_switch(&self, _value: Vec<u8>, _length: usize)

Trait Implementations

impl<'dc> Debug for DCSwitch<'dc>

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

Formats the value using the given formatter.

impl<'dc> Display for DCSwitch<'dc>

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

Formats the value using the given formatter.

impl<'dc> From<DCSwitch> for DCSwitch<'dc>

fn from(value: DCSwitch) -> Self

Converts to this type from the input type.

impl<'dc> LegacyDCHash for DCSwitch<'dc>

fn generate_hash(&self, hashgen: &mut DCHashGenerator)

Accumulates the properties of this DC element into the file hash.