Enum FormulaParseError 

pub enum FormulaParseError {
    EmptyFormula,
    EmptyPart,
    EmptyGroup,
    InvalidSymbol(String),
    InvalidNumber(String),
    ZeroCount,
    ZeroMultiplier,
    UnexpectedCharacter(char),
    UnexpectedEnd,
    UnmatchedOpenGroup,
    UnmatchedCloseGroup,
    TrailingSeparator,
}

Errors returned while parsing a formula string.

Variants

EmptyFormula

The input is empty or whitespace only.

EmptyPart

A formula part has no terms.

EmptyGroup

A parenthesized group has no terms.

InvalidSymbol(String)

An element symbol does not match the supported shape.

InvalidNumber(String)

A numeric count or multiplier could not be represented.

ZeroCount

An element count was zero.

ZeroMultiplier

A group or hydrate multiplier was zero.

UnexpectedCharacter(char)

The parser encountered an unexpected character.

UnexpectedEnd

The input ended while a construct was still open.

UnmatchedOpenGroup

A group was opened but not closed.

UnmatchedCloseGroup

A closing parenthesis appeared without a matching opening parenthesis.

TrailingSeparator

A hydrate separator appeared at the end of the formula.

Trait Implementations

impl Clone for FormulaParseError

fn clone(&self) -> FormulaParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FormulaParseError

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

Formats the value using the given formatter.

impl Display for FormulaParseError

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

Formats the value using the given formatter.

impl Error for FormulaParseError

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<FormulaValidationError> for FormulaParseError

fn from(error: FormulaValidationError) -> Self

Converts to this type from the input type.

impl PartialEq for FormulaParseError

fn eq(&self, other: &FormulaParseError) -> 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 Eq for FormulaParseError

impl StructuralPartialEq for FormulaParseError