Enum HostError 

pub enum HostError {
    Error(Box<dyn Error + 'static>),
    Message(&'static str),
}

A generic, type-erased error type for host-originating errors.

Errors are type-erased because the CLAP API does not support extracting error information from a plugin or host, only that an error happened.

Errors originating from a user-provided host callback implementation are simply logged through the host’s provided logging facilities if available, or the standard error output (stderr) if not.

This error can be constructed either from any existing Error type, or from an arbitrary error message.

Example

use std::io;
use clack_host::prelude::HostError;

fn foo () -> io::Result<()> {
    /* ... */
}

fn perform(valid: bool) -> Result<(), HostError> {
    if !valid {
        return Err(HostError::Message("Invalid value"))
    }
    /* ... */
    foo()?;
    /* ... */
    Ok(())
}

Variants

Error(Box<dyn Error + 'static>)

A generic, type-erased error.

Message(&'static str)

A constant string message to be displayed.

Trait Implementations

impl Debug for HostError

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

Formats the value using the given formatter.

impl Display for HostError

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

Formats the value using the given formatter.

impl<E: Error + 'static> From<E> for HostError

fn from(e: E) -> Self

Converts to this type from the input type.

impl From<HostError> for HostWrapperError

fn from(value: HostError) -> Self

Converts to this type from the input type.