Enum DataError 

pub enum DataError {
    AttrUnsupported(&'static str),
    AttrNotFound,
    IndexUnsupported(&'static str),
    StrKeyUnsupported(&'static str),
    IntKeyUnsupported(&'static str),
    IndexNotFound,
    OutputUnsupported(&'static str),
    OutputError(&'static str),
    UnknownValidator(String),
    RegexValidationError(String, String),
    BoolUnsupported(&'static str),
    NumberUnsupported(&'static str),
    ComparisonUnsupported(&'static str),
    IterationUnsupported(&'static str),
    PairIterationUnsupported(&'static str),
    VariableNotFound(String),
    Incomparable(&'static str, &'static str),
    Custom(Box<dyn Error>),
    // some variants omitted
}

This error is used to describe invalid variable usage in template

Variants

AttrUnsupported(&'static str)

Unsupported get attribute operation

AttrNotFound

No suche attribute on this object

IndexUnsupported(&'static str)

Unsupported subscription operation

StrKeyUnsupported(&'static str)

Unsupported using this object as a key in dictionary subscription

IntKeyUnsupported(&'static str)

Unsupported using this object as a key in array subscription

IndexNotFound

No such index on this object

OutputUnsupported(&'static str)

The object can’t be output

OutputError(&'static str)

The object can’t be output

UnknownValidator(String)

Named validator is not known

RegexValidationError(String, String)

Output did not match regex

BoolUnsupported(&'static str)

The object can’t be boolean

NumberUnsupported(&'static str)

The object can’t be a number

ComparisonUnsupported(&'static str)

The object can’t be compared to

IterationUnsupported(&'static str)

The object can’t be iterated over

PairIterationUnsupported(&'static str)

The object can’t be iterated over by pairs

VariableNotFound(String)

Variable or attribute not found

Incomparable(&'static str, &'static str)

Incomparable types

Custom(Box<dyn Error>)

Custom error

Trait Implementations

impl Debug for DataError

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

Formats the value using the given formatter.

impl Display for DataError

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

Formats the value using the given formatter.

impl Error for DataError

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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 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.