Enum PropValue 

pub enum PropValue {
    String(String),
    Number(f64),
    Bool(bool),
    Nil,
    Color {
        r: f64,
        g: f64,
        b: f64,
        a: f64,
    },
    ActionRef {
        action: String,
        args: Option<Vec<PropValue>>,
    },
    Lambda {
        lambda_id: u32,
    },
    List(Vec<PropValue>),
    Record(BTreeMap<String, PropValue>),
}

A property value in the Surface tree.

Matches the JSON representation used in the host WASM contract. Uses BTreeMap for record props to guarantee deterministic serialization.

Variants

String(String)

String value (e.g., label: "Click me").

Number(f64)

Numeric value (e.g., spacing: 8).

Bool(bool)

Boolean value (e.g., disabled: true).

Nil

Null / absent value.

Color

RGBA color as { r, g, b, a } — each 0.0–1.0.

Fields

r: f64

g: f64

b: f64

a: f64

ActionRef

Action reference (e.g., on_tap: "increment"). Serialized as { "__action": "action_name" } or { "__action": "action_name", "__args": [...] }.

Fields

action: String

args: Option<Vec<PropValue>>

Lambda

Lambda / callback reference (e.g., on_change: (s) -> set value = s). Serialized as { "__lambda": id }. The host resolves the lambda at dispatch time.

Fields

lambda_id: u32

List(Vec<PropValue>)

Ordered list of values.

Record(BTreeMap<String, PropValue>)

Named fields. Uses BTreeMap for deterministic ordering.

Implementations

impl PropValue

pub fn action(name: impl Into<String>) -> Self

Create an action reference without arguments.

pub fn action_with_args(name: impl Into<String>, args: Vec<PropValue>) -> Self

Create an action reference with arguments.

pub fn lambda(id: u32) -> Self

Create a lambda reference.

pub fn color(r: f64, g: f64, b: f64, a: f64) -> Self

Create a color value.

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

Returns the type name for error messages.

Trait Implementations

impl Clone for PropValue

fn clone(&self) -> PropValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PropValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PropValue

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&str> for PropValue

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<String> for PropValue

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<bool> for PropValue

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f64> for PropValue

fn from(n: f64) -> Self

Converts to this type from the input type.

impl From<i64> for PropValue

fn from(n: i64) -> Self

Converts to this type from the input type.

impl PartialEq for PropValue

fn eq(&self, other: &PropValue) -> 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 PropValue

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PropValue