Struct Opts 

pub struct Opts {

    pub rustfmt: bool,
    pub tracing: bool,
    pub async_: AsyncConfig,
    pub trappable_error_type: Vec<TrappableError>,
    pub ownership: Ownership,
    pub only_interfaces: bool,
    pub trappable_imports: TrappableImports,
    pub with: HashMap<String, String>,
    pub additional_derive_attributes: Vec<String>,
    pub stringify: bool,
    pub skip_mut_forwarding_impls: bool,
    pub require_store_data_send: bool,
    pub wasmtime_crate: Option<String>,
}

Fields

rustfmt: bool

Whether or not rustfmt is executed to format generated code.

tracing: bool

Whether or not to emit tracing macro calls on function entry/exit.

async_: AsyncConfig

Whether or not to use async rust functions and traits.

trappable_error_type: Vec<TrappableError>

A list of “trappable errors” which are used to replace the E in result<T, E> found in WIT.

ownership: Ownership

Whether to generate owning or borrowing type definitions.

only_interfaces: bool

Whether or not to generate code for only the interfaces of this wit file or not.

trappable_imports: TrappableImports

Configuration of which imports are allowed to generate a trap.

with: HashMap<String, String>

Remapping of interface names to rust module names. TODO: is there a better type to use for the value of this map?

additional_derive_attributes: Vec<String>

Additional derive attributes to add to generated types. If using in a CLI, this flag can be specified multiple times to add multiple attributes.

These derive attributes will be added to any generated structs or enums

stringify: bool

Evaluate to a string literal containing the generated code rather than the generated tokens themselves. Mostly useful for Wasmtime internal debugging and development.

skip_mut_forwarding_impls: bool

Temporary option to skip impl<T: Trait> Trait for &mut T for the wasmtime-wasi crate while that’s given a chance to update its b indings.

require_store_data_send: bool

Indicates that the T in Store<T> should be send even if async is not enabled.

This is helpful when sync bindings depend on generated functions from async bindings as is the case with WASI in-tree.

wasmtime_crate: Option<String>

Path to the wasmtime crate if it’s not the default path.

Implementations

impl Opts

pub fn generate(&self, resolve: &Resolve, world: WorldId) -> Result<String>

Trait Implementations

impl Clone for Opts

fn clone(&self) -> Opts

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Opts

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

Formats the value using the given formatter.

impl Default for Opts

fn default() -> Opts

Returns the “default value” for a type.