Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(String),
    List(Vec<Value>),
    Map(HashMap<String, Value>),
    Function(FunctionRef),
    Bytes(Vec<u8>),
    Error(String),
}

A Fusabi runtime value.

This is a representation of values that can be passed between the host and Fusabi scripts.

Variants

Null

Null/nil value.

Bool(bool)

Boolean value.

Int(i64)

Integer value (64-bit signed).

Float(f64)

Floating point value (64-bit).

String(String)

UTF-8 string value.

List(Vec<Value>)

Ordered list of values.

Map(HashMap<String, Value>)

Key-value map (string keys).

Function(FunctionRef)

Opaque function reference (not directly usable by host).

Bytes(Vec<u8>)

Binary data.

Error(String)

Error value with message.

Implementations

impl Value

pub fn deserialize<T: DeserializeOwned>(self) -> Result<T, ValueConversionError>

Deserialize this Value into a serde-compatible type.

pub fn to_json_string(&self) -> String

Convert to JSON string.

pub fn to_json_string_pretty(&self) -> String

Convert to pretty JSON string.

pub fn from_json_str(s: &str) -> Result<Self, ValueConversionError>

Parse from JSON string.

impl Value

pub fn value_type(&self) -> ValueType

Get the type of this value.

pub fn is_null(&self) -> bool

Returns true if this is a null value.

pub fn is_error(&self) -> bool

Returns true if this is an error value.

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

Try to get as a bool.

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

Try to get as an integer.

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

Try to get as a float.

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

Try to get as a string.

pub fn as_list(&self) -> Option<&[Value]>

Try to get as a list.

pub fn as_map(&self) -> Option<&HashMap<String, Value>>

Try to get as a map.

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

Try to get as bytes.

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

Get the error message if this is an error value.

pub fn null() -> Self

Create a null value.

pub fn error(msg: impl Into<String>) -> Self

Create an error value.

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

Formats the value using the given formatter.

impl Default for Value

fn default() -> Self

Returns the “default value” for a type.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&str> for Value

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<()> for Value

fn from(_: ()) -> Self

Converts to this type from the input type.

impl From<HashMap<String, Value>> for Value

fn from(m: HashMap<String, Value>) -> Self

Converts to this type from the input type.

impl<T: Into<Value>> From<Option<T>> for Value

fn from(opt: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(s: String) -> Self

Converts to this type from the input type.

impl<T: IntoValue> From<Vec<T>> for Value

fn from(v: Vec<T>) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(b: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(f: f32) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(i: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(i: i64) -> Self

Converts to this type from the input type.

impl From<u32> for Value

fn from(u: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Value

fn from(u: u64) -> Self

Converts to this type from the input type.

impl From<usize> for Value

fn from(u: usize) -> Self

Converts to this type from the input type.

impl FromValue for Value

fn from_value(value: Value) -> Result<Self, ValueConversionError>

Convert from a Value, returning an error if conversion fails.

fn from_value_ref(value: &Value) -> Result<Self, ValueConversionError>

Convert from a Value reference, cloning as needed.

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 StructuralPartialEq for Value