Enum Value 

pub enum Value {
    Bool(bool),
    I8(i8),
    U8(u8),
    I16(i16),
    U16(u16),
    I32(i32),
    U32(u32),
    I64(i64),
    U64(u64),
    F32(f32),
    F64(f64),
    String(String),
    Bytes(Vec<u8>),
    Array(Vec<Value>),
    Null,
}

Dynamic value type for data points.

Variants

Bool(bool)

Boolean value.

I8(i8)

8-bit signed integer.

U8(u8)

8-bit unsigned integer.

I16(i16)

16-bit signed integer.

U16(u16)

16-bit unsigned integer.

I32(i32)

32-bit signed integer.

U32(u32)

32-bit unsigned integer.

I64(i64)

64-bit signed integer.

U64(u64)

64-bit unsigned integer.

F32(f32)

32-bit floating point.

F64(f64)

64-bit floating point.

String(String)

String value.

Bytes(Vec<u8>)

Binary data.

Array(Vec<Value>)

Array of values.

Null

Null/empty value.

Implementations

impl Value

pub fn bool(v: bool) -> Value

Create a new boolean value.

pub fn float(v: f64) -> Value

Create a new float value.

pub fn int(v: i64) -> Value

Create a new integer value.

pub fn string(v: impl Into<String>) -> Value

Create a new string value.

pub fn as_bool(&self) -> Option<bool>

Get value as boolean.

pub fn as_f64(&self) -> Option<f64>

Get value as f64.

pub fn as_i64(&self) -> Option<i64>

Get value as i64.

pub fn as_u16(&self) -> Option<u16>

Get value as u16.

pub fn as_str(&self) -> Option<&str>

Get value as string.

pub fn as_bytes(&self) -> Option<&[u8]>

Get value as bytes.

pub fn is_numeric(&self) -> bool

Check if value is numeric.

pub fn is_null(&self) -> bool

Check if value is null.

pub fn type_name(&self) -> &'static str

Get the type name of this value.

pub fn to_registers(&self) -> Vec<u16>

Convert to u16 registers for Modbus.

pub fn from_registers(registers: &[u16], value_type: ValueType) -> Option<Value>

Create value from u16 registers (for Modbus).

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate 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<(), Error>

Formats the value using the given formatter.

impl Default for Value

fn default() -> Value

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Value

fn deserialize<__D>( __deserializer: __D, ) -> Result<Value, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&str> for Value

fn from(v: &str) -> Value

Converts to this type from the input type.

impl From<String> for Value

fn from(v: String) -> Value

Converts to this type from the input type.

impl From<Variant> for Value

fn from(variant: Variant) -> Value

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(v: Vec<u8>) -> Value

Converts to this type from the input type.

impl From<bool> for Value

fn from(v: bool) -> Value

Converts to this type from the input type.

impl From<f32> for Value

fn from(v: f32) -> Value

Converts to this type from the input type.

impl From<f64> for Value

fn from(v: f64) -> Value

Converts to this type from the input type.

impl From<i32> for Value

fn from(v: i32) -> Value

Converts to this type from the input type.

impl From<i64> for Value

fn from(v: i64) -> Value

Converts to this type from the input type.

impl From<u32> for Value

fn from(v: u32) -> Value

Converts to this type from the input type.

impl From<u64> for Value

fn from(v: u64) -> Value

Converts to this type from the input type.

impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for Value

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Value