Enum duk::Value

pub enum Value {
    Undefined,
    Null,
    Boolean(bool),
    Number(f64),
    String(String),
    Array(Vec<Value>),
    Object(BTreeMap<String, Value>),
    Bytes(Vec<u8>),
    Foreign(&'static str),
}

A Javascript/Ecmascript value that exists in the Rust world.

Duktape supports values beyond these, but they don't have good Rust semantics, so they cannot be interacted with from the Rust world. They are therefore mapped to Value::Foreign when retrieved, and trying to further use those values is generally equivalent to using undefined.

Variants

Undefined

The undefined value.

Null

The null value.

Boolean(bool)

A boolean like true or false.

Number(f64)

Any number (both integral like 5 and fractional like 2.3).

String(String)

Any string like 'abc'.

Array(Vec<Value>)

Any array of values like ['a', 2, false].

Object(BTreeMap<String, Value>)

A JSON-like object like {a: 'a', b: 2, c: false}.

Bytes(Vec<u8>)

A Duktape byte buffer like Duktape.Buffer('abc').

Foreign(&'static str)

A Duktape value that cannot be represented in Rust (yet).

Contains a &str describing the foreign type.

Methods

impl Value

pub fn to_reference<'a>(&self, context: &'a Context) -> Reference<'a>

Copies this value into a Context, and returns the reference to the value within the context.

Trait Implementations

impl Argument for Value

unsafe fn push_to_context(&self, context: &Context)

Pushes this argument to the stack of the specified context. This requires interaction with the internals of the context, and is therefore an unsafe operation.

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 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: &Value) -> bool

This method tests for !=.

impl StructuralPartialEq for Value