Struct extism_runtime::Context

pub struct Context {
    pub plugins: BTreeMap<PluginIndex, UnsafeCell<Plugin>>,
    pub error: Option<CString>,
    /* private fields */
}

A Context is used to store and manage plugins

Fields

plugins: BTreeMap<PluginIndex, UnsafeCell<Plugin>>

Plugin registry

error: Option<CString>

Error message

Implementations

impl Context

pub fn new() -> Context

Create a new context

pub fn next_id(&mut self) -> Result<PluginIndex, Error>

Get the next valid plugin ID

pub fn insert(&mut self, plugin: Plugin) -> PluginIndex

pub fn new_plugin<'a>(
    &mut self,
    data: impl AsRef<[u8]>,
    imports: impl IntoIterator<Item = &'a Function>,
    with_wasi: bool
) -> PluginIndex

pub fn set_error(&mut self, e: impl Debug)

Set the context error

pub fn error<T>(&mut self, e: impl Debug, x: T) -> T

Convenience function to set error and return the value passed as the final parameter

pub fn plugin(&mut self, id: PluginIndex) -> Option<*mut Plugin>

Get a plugin from the context

pub fn plugin_exists(&mut self, id: PluginIndex) -> bool

pub fn remove(&mut self, id: PluginIndex)

Remove a plugin from the context

Trait Implementations

impl Default for Context

fn default() -> Self

Returns the “default value” for a type.