Enum EngineError 

pub enum EngineError {
    NotFound(String),
    Usage(String),
    Setup(String),
    NoProject(String),
    Detect(DetectFailure),
    Call {
        plugin: String,
        verb: String,
        error: CallError,
    },
    Start {
        program: OsString,
        source: Error,
    },
}

A program that could not be started.

Variants

NotFound(String)

The program was not found: either the path a plugin pointed at does not exist, or no name on PATH matches.

The message is built here rather than by the caller because only this crate knows what was searched, and it is the part a person needs to see.

Usage(String)

The user asked for something impossible (-C at a directory that is not there).

Setup(String)

The setup could not be completed: the store, the manifest list, the project root.

NoProject(String)

No project type was detected, or the pinned plugin cannot answer. Exit code 3.

Detect(DetectFailure)

The decision refused to choose, with the reason the decision crate reported.

Call

The plugin answered that it cannot do this.

Fields

plugin: String

The plugin’s name.

verb: String

The verb it refused.

error: CallError

What it said.

Start

It was found, and starting it failed anyway.

Fields

program: OsString

The program, as it was about to be started.

source: Error

What the operating system said.

Implementations

impl EngineError

pub fn message(&self) -> String

The full explanation, for whoever is showing it.

pub fn program(&self) -> Option<&OsStr>

The program this is about, when there is one.

pub fn is_not_found(&self) -> bool

Whether this is “there is no such program”, which is a setup problem rather than a failure.

Trait Implementations

impl Debug for EngineError

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

Formats the value using the given formatter.

impl Display for EngineError

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

Formats the value using the given formatter.

impl Error for EngineError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.