Enum ViewError 

#[non_exhaustive]
pub enum ViewError {
    Missing {
        path: String,
        field: Option<String>,
    },
    UnexpectedType {
        path: String,
        field: Option<String>,
        expected: &'static str,
        actual: &'static str,
    },
    UnexpectedLength {
        path: String,
        field: Option<String>,
        expected: String,
        actual: usize,
    },
    DuplicateName {
        path: String,
        field: Option<String>,
    },
    InvalidStringEncoding {
        path: String,
        field: Option<String>,
        row: Option<usize>,
        column: Option<String>,
    },
    InvalidDimensions {
        path: String,
        field: Option<String>,
        reason: String,
    },
    InvalidPackageVersion {
        path: String,
        field: Option<String>,
        reason: String,
    },
}

A construction error from the typed installed-package metadata view.

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.

Missing

Fields

path: String

field: Option<String>

UnexpectedType

Fields

path: String

field: Option<String>

expected: &'static str

actual: &'static str

UnexpectedLength

Fields

path: String

field: Option<String>

expected: String

actual: usize

DuplicateName

Fields

path: String

field: Option<String>

InvalidStringEncoding

Fields

path: String

field: Option<String>

row: Option<usize>

column: Option<String>

InvalidDimensions

Fields

path: String

field: Option<String>

reason: String

InvalidPackageVersion

Fields

path: String

field: Option<String>

reason: String

Implementations

impl ViewError

pub fn path(&self) -> String

Returns the logical location of the invalid value.

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

Returns the metadata field associated with the error, when there is one.

pub fn row(&self) -> Option<usize>

Returns row context when the error was caused by a matrix cell.

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

Returns column-name context when the error was caused by a matrix cell.

Trait Implementations

impl Debug for ViewError

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

Formats the value using the given formatter.

impl Display for ViewError

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

Formats the value using the given formatter.

impl Eq for ViewError

impl Error for ViewError

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 PartialEq for ViewError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ViewError