Struct ValueEnvelope 

pub struct ValueEnvelope {
    pub value: WireValue,
    pub type_info: TypeInfo,
    pub type_registry: TypeRegistry,
}

Complete value envelope with metadata

This is the primary exchange format for Shape values. It contains:

• The raw value (for lossless data transfer)
• Type information (for proper interpretation)
• Type registry (for metadata and display options)

Fields

value: WireValue

The wire-format value

type_info: TypeInfo

Type information

type_registry: TypeRegistry

Available metadata items for display/parsing

Implementations

impl ValueEnvelope

pub fn new( value: WireValue, type_info: TypeInfo, type_registry: TypeRegistry, ) -> Self

Create a new envelope

pub fn from_value(value: WireValue) -> Self

Create an envelope with default metadata inferred from the value

pub fn default_format(&self) -> &str

Get the default format name

pub fn available_formats(&self) -> Vec<&str>

Get available metadata/format names

pub fn has_format(&self, name: &str) -> bool

Check if a metadata item is available

pub fn format_default(&self) -> Result<String>

Format the value using the default format

pub fn format( &self, format_name: &str, params: &HashMap<String, Value>, ) -> Result<String>

Format the value using a specific metadata item

pub fn format_with_json_params( &self, format_name: &str, params: &Value, ) -> Result<String>

Format the value with specific metadata and parameters as JSON

impl ValueEnvelope

pub fn null() -> Self

Create a null envelope

pub fn number(n: f64) -> Self

Create a number envelope

pub fn string(s: impl Into<String>) -> Self

Create a string envelope

pub fn bool(b: bool) -> Self

Create a boolean envelope

pub fn timestamp(millis: i64) -> Self

Create a timestamp envelope

Trait Implementations

impl Clone for ValueEnvelope

fn clone(&self) -> ValueEnvelope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValueEnvelope

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ValueEnvelope

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ValueEnvelope

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

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 ValueEnvelope