Enum GenError 

pub enum GenError {
    Config(String),
    Introspect(String),
    UnmappedType {
        column: String,
        db_type: String,
    },
    Unsupported(String),
    Io(Error),
}

Everything that can go wrong between a connection string and the emitted files. One enum, no anyhow: callers (the CLI, tests, build scripts) match on the kind.

Variants

Config(String)

The TOML configuration failed to parse or contradicts itself.

Introspect(String)

The catalog queries failed or returned something unusable.

UnmappedType

A column’s database type has no default mapping and no configured override — the honest failure docs/type-mappings.md prescribes.

Fields

column: String

table.column the failure names.

db_type: String

The declared database type that had no mapping.

Unsupported(String)

A feature the generator deliberately does not cover yet (MySQL emission, composite-column foreign keys, …).

Io(Error)

Filesystem trouble writing the output.

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.

impl From<Error> for GenError

fn from(e: Error) -> Self

Converts to this type from the input type.