Enum Error 

#[non_exhaustive]
pub enum Error {
    EntryNotFound(PathBuf, Error),
    EntryIsDirectory(PathBuf),
    UnsupportedFileType(Option<String>),
    EntryNotInGraph(PathBuf),
    SnapshotRead(PathBuf, Error),
    SnapshotParse(PathBuf, Error),
    SnapshotWrite(PathBuf, Error),
    MutuallyExclusiveFlags(String),
    TargetIsEntryPoint(String),
    EntryRequired,
    NotAGitRepo,
    NotSnapshotOrRef(String),
    DiffFileNotFound(String),
    GitError(String),
    InvalidTopValue(&'static str, i32),
    Readline(String),
    MaxWeightExceeded {
        kind: &'static str,
        weight: u64,
        module_count: usize,
        threshold: u64,
    },
}

Errors from entry validation, graph loading, and snapshot I/O.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EntryNotFound(PathBuf, Error)

Entry point file not found on disk.

EntryIsDirectory(PathBuf)

Entry point path refers to a directory, not a file.

UnsupportedFileType(Option<String>)

File has an unsupported or missing extension.

EntryNotInGraph(PathBuf)

Entry point exists but was not found in the dependency graph.

SnapshotRead(PathBuf, Error)

Cannot read a snapshot file from disk.

SnapshotParse(PathBuf, Error)

Snapshot file contains invalid JSON.

SnapshotWrite(PathBuf, Error)

Cannot write a snapshot file to disk.

MutuallyExclusiveFlags(String)

Mutually exclusive CLI flags were used together.

TargetIsEntryPoint(String)

–chain/–cut target is the entry point itself.

EntryRequired

–entry is required when comparing git refs.

NotAGitRepo

Not inside a git repository.

NotSnapshotOrRef(String)

Argument is not a snapshot file or valid git ref.

DiffFileNotFound(String)

A path-like argument that doesn’t exist on disk.

GitError(String)

Git command failed.

InvalidTopValue(&'static str, i32)

–top or –limit value is invalid (must be >= -1).

Readline(String)

Readline/REPL initialization failed.

MaxWeightExceeded

–max-weight threshold exceeded.

Fields

kind: &'static str

weight: u64

module_count: usize

threshold: u64

Implementations

impl Error

pub fn hint(&self) -> Option<&str>

User-facing hint to accompany the error message.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.