Enum Value 

pub enum Value {
    Null,
    Bool(bool),
    Number(f64),
    String(String),
    Color(Color),
    Array(Vec<Value>),
    Object(BTreeMap<String, Value>),
    Image {
        name: String,
        available: bool,
    },
    Formatted(Vec<FormatSection>),
    NumberArray(Vec<f64>),
    ColorArray(Vec<Color>),
    Padding([f64; 4]),
    Projection(Projection),
    Collator {
        case_sensitive: bool,
        diacritic_sensitive: bool,
        locale: Option<String>,
    },
}

A value in the MapLibre expression type system.

Variants

Null

Bool(bool)

Number(f64)

String(String)

Color(Color)

Array(Vec<Value>)

Object(BTreeMap<String, Value>)

Image

A resolved image reference (the image operator).

Fields

name: String

available: bool

Formatted(Vec<FormatSection>)

Formatted text (the format operator): a list of styled sections.

NumberArray(Vec<f64>)

A numberArray value.

ColorArray(Vec<Color>)

A colorArray value.

Padding([f64; 4])

A padding value: [top, right, bottom, left].

Projection(Projection)

A projectionDefinition: a named projection or a transition between two.

Collator

A locale-aware string collator (the collator operator).

Fields

case_sensitive: bool

diacritic_sensitive: bool

locale: Option<String>

Implementations

impl Value

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

The MapLibre type name of this value ("number", "string", …).

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

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

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

pub fn is_truthy(&self) -> bool

Truthiness per the MapLibre to-boolean rules.

pub fn from_json(json: &Value) -> Value

Build a literal Value from raw JSON (used by the literal operator and by bare literals in an expression).

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 Display for Value

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

Formats the value using the given formatter.

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