Enum FormulaError 

#[non_exhaustive]
pub enum FormulaError {
    ParseError {
        pos: usize,
        message: String,
    },
    UnknownElement(String),
    NoAbundanceData(u32),
    Core(Error),
}

Errors from formula parsing and element expansion.

Distinct from the crate-level crate::Error so that the parser can report byte positions and unknown symbols without polluting the shared composition-error set; mass-table failures are wrapped in Self::Core.

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.

ParseError

The formula is not valid under the supported grammar (see parse_formula).

Fields

pos: usize

Byte offset of the offending character.

message: String

Human-readable explanation.

UnknownElement(String)

An element symbol was not recognized (case-sensitive).

NoAbundanceData(u32)

An element has no tabulated natural isotopes to expand into.

Core(Error)

A composition-level failure (e.g. missing atomic mass).

Trait Implementations

impl Debug for FormulaError

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

Formats the value using the given formatter.

impl Display for FormulaError

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

Formats the value using the given formatter.

impl Error for FormulaError

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<Error> for FormulaError

fn from(source: Error) -> Self

Converts to this type from the input type.