Enum drmem_api::device::Value

pub enum Value {
    Bool(bool),
    Int(i32),
    Flt(f64),
    Str(String),
}

Defines fundamental types that can be associated with a device. Drivers set the type for each device they manage and, for devices that can be set, only accept values of the correct type.

Variants

Bool(bool)

For devices that return/accept a simple true/false, on/off, etc., state.

Int(i32)

For devices that return/accept an integer value. It is stored as a signed, 32-bit. This type should primarily be used for digital inputs/outputs. There is no 64-bit version because Javascript doesn’t support a 64-bit integer. For integer values greater than 32 bits, use a Flt since it can losslessly handle integers up to 52 bits.

Flt(f64)

For devices that return/accept floating point numbers or integers up to 52 bits.

Str(String)

For devices that return/accept text. Since strings can greatly vary in size, care must be taken when returning this type. A driver that returns strings rapidly should keep them short. Longer strings should be returned at a slower rate. If the system takes too much time serializing string data, it could throw other portions of DrMem out of “soft real-time”.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&String> for Value

fn from(value: &String) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i16> for Value

fn from(value: i16) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(value: i32) -> Self

Converts to this type from the input type.

impl From<u16> for Value

fn from(value: u16) -> Self

Converts to this type from the input type.

impl PartialEq<Value> for Value

fn eq(&self, other: &Value) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<Value> for String

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for bool

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for f64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i16

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u16

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl StructuralPartialEq for Value