Enum MigrateError 

pub enum MigrateError {
    WrongNode {
        expected: &'static str,
        expected_named: bool,
        actual: String,
        actual_named: bool,
    },
    WrongCategory {
        category: &'static str,
        actual: String,
        actual_named: bool,
    },
    MissingField {
        node: String,
        field: &'static str,
    },
    MissingChild {
        node: String,
        expected: &'static str,
    },
    InvalidPunctuated {
        node: String,
        values: usize,
        punctuation: usize,
    },
}

A typed migration failure.

Variants

WrongNode

A concrete typed node received the wrong backend node kind.

Fields

expected: &'static str

The required node kind.

expected_named: bool

Whether the required kind is named.

actual: String

The received node kind.

actual_named: bool

Whether the received kind is named.

WrongCategory

No alternative in a typed category matched the backend node.

Fields

category: &'static str

The typed category name.

actual: String

The received node kind.

actual_named: bool

Whether the received kind is named.

MissingField

A required named field was absent.

Fields

node: String

The parent node kind.

field: &'static str

The absent grammar field.

MissingChild

A required positional or anonymous child was absent.

Fields

node: String

The parent node kind.

expected: &'static str

The expected child type or spelling.

InvalidPunctuated

A punctuated field had fewer than two values or did not contain one separator between every adjacent pair of values.

Fields

node: String

The parent node kind.

values: usize

The number of value nodes found.

punctuation: usize

The number of punctuation nodes found.

Implementations

impl MigrateError

pub fn wrong_node( expected: &'static str, expected_named: bool, actual: CSTNodeClassLabel<'_>, ) -> Self

Creates a concrete node-kind mismatch.

pub fn wrong_category( category: &'static str, actual: CSTNodeClassLabel<'_>, ) -> Self

Creates a category mismatch.

Trait Implementations

impl Clone for MigrateError

fn clone(&self) -> MigrateError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MigrateError

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

Formats the value using the given formatter.

impl Display for MigrateError

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

Formats the value using the given formatter.

impl Eq for MigrateError

impl Error for MigrateError

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<MigrateError> for ParseError

fn from(error: MigrateError) -> Self

Converts to this type from the input type.

impl PartialEq for MigrateError

fn eq(&self, other: &MigrateError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MigrateError