Struct ScytheError 

pub struct ScytheError {
    pub code: ErrorCode,
    pub message: String,
}

Fields

code: ErrorCode

message: String

Implementations

impl ScytheError

pub fn new(code: ErrorCode, message: impl Into<String>) -> Self

pub fn syntax(msg: impl Into<String>) -> Self

pub fn unknown_table(name: &str) -> Self

pub fn unknown_column(name: &str) -> Self

pub fn unknown_function(name: &str) -> Self

pub fn ambiguous_function(name: &str) -> Self

pub fn ambiguous_column(name: &str) -> Self

pub fn type_mismatch(msg: impl Into<String>) -> Self

pub fn missing_annotation(what: &str) -> Self

pub fn invalid_annotation(msg: impl Into<String>) -> Self

pub fn column_count_mismatch(left: usize, right: usize) -> Self

pub fn duplicate_alias(name: &str) -> Self

pub fn cte_column_alias_mismatch( alias_count: usize, column_count: usize, ) -> Self

The explicit column alias list on a CTE (WITH t(a, b) AS ...) has a different entry count than the CTE body’s output columns. PostgreSQL rejects this at parse/plan time, so scythe must too — silently matching by position would mislabel columns.

pub fn invalid_recursion(msg: impl Into<String>) -> Self

pub fn invalid_config(msg: impl Into<String>) -> Self

Build an error for user-supplied configuration that scythe understood well enough to reject — a misspelled option key, an out-of-range value.

Prefer this over ScytheError::new with ErrorCode::InternalError anywhere the offending input came from scythe.toml rather than from scythe’s own state.

pub fn untypeable_record(subject: &str, column: &str, function: &str) -> Self

A set-returning function’s anonymous record column referenced in select-list position – json_each/jsonb_each/json_each_text/ jsonb_each_text and the json_populate_record/jsonb_populate_record/ json_populate_recordset/jsonb_populate_recordset family. PostgreSQL’s record pseudo-type has no neutral-type representation, but every one of these functions has a FROM-clause form that expands into real, typeable columns instead (#223).

The message deliberately does not hardcode .key/.value as the worked example: that’s the right rewrite for the json_each/ json_each_text family (see testing_data/types/json_jsonb_advanced/06_jsonb_each_from.json) but wrong for json_populate_record, whose columns come from a caller-supplied row type instead – one message covering both families has to stay generic about the field names.

pub fn untypeable_row_constructor(subject: &str, column: &str) -> Self

A multi-element ROW(...)/tuple constructor – (a, b) (parses as Expr::Tuple) or the explicit ROW(a, b) call (parses as a function named row) – neither of which has a single neutral type (#117, #223).

pub fn unresolved_expression_type(subject: &str, column: &str) -> Self

A generic fallback for any other expression infer_expr_type cannot resolve to a type: an unresolved composite field access, unnest over a non-array argument, a subquery producing no columns, a table-valued function scythe has no column-type mapping for, and the handful of AST shapes with no dedicated inference arm (#223).

Trait Implementations

impl Debug for ScytheError

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

Formats the value using the given formatter.

impl Display for ScytheError

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

Formats the value using the given formatter.

impl Error for ScytheError

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.