Enum GenError 

pub enum GenError {
    InvalidLessonId {
        lesson_id: String,
    },
    EmptySuite,
    NoRepoRoot {
        course_root: PathBuf,
    },
    Write {
        path: PathBuf,
        source: Error,
    },
}

Why an eval dir could not be generated.

Variants

InvalidLessonId

The lesson id is not a safe slug: empty, or containing a character outside ASCII alphanumerics, -, _. Mirrors scaffold::is_valid_slug (scaffold.rs:320), enforced here so a hostile id can never reach a path or an emitted template (§1.3.1).

Fields

lesson_id: String

The rejected id, quoted back to the caller.

EmptySuite

The suite has no cases. A vacuous “100% pass” is a sneaky pass, so an empty suite is refused rather than emitting tasks/ with zero files.

NoRepoRoot

No ancestor of the course root contains scripts/smevals/, so the script-path prefix cannot be computed exactly (and the old four-hop guess is exactly the wrong-depth bug this refusal replaces). The effectful shell refuses rather than emit a path that resolves somewhere else (§1.1).

Fields

course_root: PathBuf

The canonicalized course root that was walked up from.

Write

Writing a generated file failed (the effectful shell only — the pure generator never touches the filesystem).

Fields

path: PathBuf

The path that could not be written.

source: Error

The underlying I/O failure.

Trait Implementations

impl Debug for GenError

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

Formats the value using the given formatter.

impl Display for GenError

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

Formats the value using the given formatter.

impl Error for GenError

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.