Struct NumberFormat 

pub struct NumberFormat { /* private fields */ }

How a source writes an amount, read once.

Built from the authored picture and never rebuilt: every engine is handed the same facts, so two engines cannot disagree about what the design said.

Implementations

impl NumberFormat

pub fn parse(spelled: &str) -> Result<Self, NumberFormatError>

Read a picture, or say what is wrong with it.

Errors

Nothing at all, no digit place, a thousands mark in the wrong place or with the wrong number of places after it, two decimal points, digits on both sides of the symbol, or a second picture that is not the first one in brackets.

pub fn spelled(&self) -> &str

The picture as the design wrote it — what a refusal quotes back.

pub fn opens_with(&self) -> &str

The symbol in front of the value, empty where there is none.

pub fn closes_with(&self) -> &str

The symbol after the value, empty where there is none.

pub fn grouped(&self) -> bool

Whether the source writes the thousands in groups.

pub fn decimals(&self) -> usize

How many places the source writes after the decimal point.

pub fn negatives(&self) -> Negatives

How the source writes a value below zero.

pub fn marks(&self) -> Vec<String>

The marks that are not part of the number, in the order a reader takes them out.

The symbol that opens the value, the symbol that closes it, the thousands mark, and the brackets where the source writes a negative in them. What is left is digits, at most one decimal point and at most a leading minus.

pub fn shape_pattern(&self) -> String

The shape a value has to have, as a regular expression, for an engine whose own conversion raises rather than answering nothing.

It is built from the same picture the marks come from, so the guard and the reading cannot hold two opinions about one spelling. The value is matched with its surrounding spaces already gone.

Trait Implementations

impl Clone for NumberFormat

fn clone(&self) -> NumberFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NumberFormat

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

Formats the value using the given formatter.

impl Display for NumberFormat

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

Formats the value using the given formatter.

impl Eq for NumberFormat

impl PartialEq for NumberFormat

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NumberFormat