Crate extism_convert

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Expand description

The extism-convert crate is used by the Rust SDK and Rust PDK to provide a shared interface for encoding and decoding values that can be passed to Extism function calls.

A set of types (Json, Msgpack) that can be used to specify a serde encoding are also provided. These are similar to axum extractors - they are implemented as a tuple struct with a single field that is meant to be extracted using pattern matching.

Macros§

  • encoding
    The encoding macro can be used to create newtypes that implement a particular encoding for the inner value.

Structs§

  • Base64
    Base64 conversion
  • Error
    The Error type, a wrapper around a dynamic error type.
  • Json
    Json encoding
  • MemoryHandle
    MemoryHandle describes where in memory a block of data is stored
  • Msgpack
    Msgpack encoding
  • Prost
    Protobuf encoding
  • Raw
    Raw does no conversion, it just copies the memory directly. Note: This will only work for types that implement bytemuck::Pod

Traits§

  • FromBytes
    FromBytes is used to define how a type should be decoded when working with Extism memory. It is used for plugin output and host function input.
  • FromBytesOwned
    FromBytesOwned is similar to FromBytes but it doesn’t borrow from the input slice. FromBytes is automatically implemented for all types that implement FromBytesOwned.
  • ToBytes
    ToBytes is used to define how a type should be encoded when working with Extism memory. It is used for plugin input and host function output.

Derive Macros§