Trait SpanText 

pub trait SpanText:
    Debug
    + Eq
    + Hash
    + Borrow<str>
    + Serialize
    + Default {
    // Required methods
    fn from_static_str(value: &'static str) -> Self;
    fn from_owned(value: String) -> Self;

    // Provided method
    fn to_bytes_string(&self) -> BytesString { ... }
}

Trait representing the requirements for a type to be used as a Span “string” type. Note: Borrow is not required by the derived traits, but allows to access HashMap elements from a static str and check if the string is empty.

Required Methods

fn from_static_str(value: &'static str) -> Self

fn from_owned(value: String) -> Self

Provided Methods

fn to_bytes_string(&self) -> BytesString

Copies this text into an owned BytesString.

Used by the v0.5 conversion, whose shared dictionary always owns its strings so it can hold both interned span text and dynamically-built JSON (span links / events). The default copies the bytes; owned text types (e.g. BytesString) should override with a cheaper reference-counted clone.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl SpanText for BytesString

fn from_static_str(value: &'static str) -> Self

fn to_bytes_string(&self) -> BytesString

fn from_owned(value: String) -> Self

impl SpanText for Cow<'_, str>

fn from_static_str(value: &'static str) -> Self

fn from_owned(value: String) -> Self

Implementors