Crate icu_pattern

icu_pattern is a utility crate of the ICU4X project.

It includes a Pattern type which supports patterns with various storage backends.

The types are tightly coupled with the [writeable] crate.

Examples

Parsing and interpolating with a single-placeholder pattern:

use icu_pattern::SinglePlaceholderPattern;
use writeable::assert_writeable_eq;

// Parse a pattern string:
let pattern = SinglePlaceholderPattern::try_from_str(
    "Hello, {0}!",
    Default::default(),
)
.unwrap();

// Interpolate into the pattern string:
assert_writeable_eq!(pattern.interpolate(["World"]), "Hello, World!");

Re-exports

pub use PatternError as Error;

Structs

MissingNamedPlaceholderError

MultiNamedPlaceholderKey

A string wrapper for the MultiNamedPlaceholder pattern backend.

Parser

Placeholder pattern parser.

ParserOptions

Options passed to the constructor of Parser.

Pattern

A string pattern with placeholders.

PatternString

Enums

DoublePlaceholder

Backend for patterns containing zero, one, or two placeholders.

DoublePlaceholderKey

A two-value enum for the DoublePlaceholder pattern backend.

MultiNamedPlaceholder

Backend for patterns containing zero or more named placeholders.

ParsedPatternItem

A PatternItem with additional detail returned by the Parser.

ParserError

An error returned when parsing a pattern.

PatternError

PatternItem

A borrowed item in a Pattern. Items are either string literals or placeholders.

PatternItemCow

A borrowed-or-owned item in a Pattern. Items are either string literals or placeholders.

QuoteMode

Controls how quotes (') are interpreted.

SinglePlaceholder

Backend for patterns containing zero or one placeholder.

SinglePlaceholderKey

A singleton enum for the SinglePlaceholder pattern backend.

Traits

PatternBackend

Types that implement backing data models for Pattern implement this trait.

PlaceholderValueProvider

Trait implemented on collections that can produce [TryWriteable]s for interpolation.

Type Aliases

DoublePlaceholderPattern

Examples

MultiNamedPlaceholderPattern

Examples

SinglePlaceholderPattern

Examples