Enum Error 

#[non_exhaustive]
pub enum Error {
    StackUnderflow(char),
    TypeMismatch(char),
    UnrecognizedFormatOption(char),
    InvalidVariableName(char),
    InvalidParameterIndex(char),
    MalformedCharacterConstant,
    IntegerConstantOverflow,
    MalformedIntegerConstant,
    FormatWidthOverflow,
    FormatPrecisionOverflow,
    FormatTypeMismatch,
}

Errors reported when expanding a string

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.

StackUnderflow(char)

The operator does not have required data on stack

TypeMismatch(char)

The data type on stack is not expected by the operator

UnrecognizedFormatOption(char)

Unknown or unsupported format option

InvalidVariableName(char)

Variable name is invalid

InvalidParameterIndex(char)

Parameter index is invalid

MalformedCharacterConstant

Character constant is invalid

IntegerConstantOverflow

Integer constant is too large

MalformedIntegerConstant

Integer constant is invalid

FormatWidthOverflow

Format width is too large

FormatPrecisionOverflow

FormatTypeMismatch

Argument type is incompatible with the format

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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 Error

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Error