Module icu::properties::props

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This module defines all available properties.

Properties may be empty marker types and implement BinaryProperty, or enumerations1 and implement EnumeratedProperty.

BinaryPropertys are queried through a CodePointSetData, while EnumeratedPropertys are queried through CodePointMapData.

In addition, some EnumeratedPropertys also implement ParseableEnumeratedProperty or NamedEnumeratedProperty. For these properties, PropertyParser, PropertyNamesLong, and PropertyNamesShort can be constructed.

  1. either Rust enums, or Rust structs with associated constants (open enums) ↩

Structs§

  • Alnum
    Characters with the Alphabetic or Decimal_Number property.
  • Alphabetic
    Alphabetic characters.
  • AsciiHexDigit
    ASCII characters commonly used for the representation of hexadecimal numbers.
  • BasicEmoji
    Characters and character sequences intended for general-purpose, independent, direct input.
  • BidiClass
    Enumerated property Bidi_Class
  • BidiControl
    Format control characters which have specific functions in the Unicode Bidirectional Algorithm.
  • BidiMirrored
    Characters that are mirrored in bidirectional text.
  • BidiMirroringGlyph
    This is a bitpacked combination of the Bidi_Mirroring_Glyph, Bidi_Mirrored, and Bidi_Paired_Bracket_Type properties.
  • Blank
    Horizontal whitespace characters
  • CanonicalCombiningClass
    Property Canonical_Combining_Class. See UAX #15: https://www.unicode.org/reports/tr15/.
  • CaseIgnorable
    Characters which are ignored for casing purposes.
  • CaseSensitive
    Characters that are either the source of a case mapping or in the target of a case mapping.
  • Cased
    Uppercase, lowercase, and titlecase characters.
  • ChangesWhenCasefolded
    Characters whose normalized forms are not stable under case folding.
  • ChangesWhenCasemapped
    Characters which may change when they undergo case mapping.
  • ChangesWhenLowercased
    Characters whose normalized forms are not stable under a toLowercase mapping.
  • ChangesWhenNfkcCasefolded
    Characters which are not identical to their NFKC_Casefold mapping.
  • ChangesWhenTitlecased
    Characters whose normalized forms are not stable under a toTitlecase mapping.
  • ChangesWhenUppercased
    Characters whose normalized forms are not stable under a toUppercase mapping.
  • Dash
    Punctuation characters explicitly called out as dashes in the Unicode Standard, plus their compatibility equivalents.
  • DefaultIgnorableCodePoint
    For programmatic determination of default ignorable code points.
  • Deprecated
    Deprecated characters.
  • Diacritic
    Characters that linguistically modify the meaning of another character to which they apply.
  • EastAsianWidth
    Enumerated property East_Asian_Width.
  • Emoji
    Characters that are emoji.
  • EmojiComponent
    Characters used in emoji sequences that normally do not appear on emoji keyboards as separate choices, such as base characters for emoji keycaps.
  • EmojiModifier
    Characters that are emoji modifiers.
  • EmojiModifierBase
    Characters that can serve as a base for emoji modifiers.
  • EmojiPresentation
    Characters that have emoji presentation by default.
  • ExtendedPictographic
    Pictographic symbols, as well as reserved ranges in blocks largely associated with emoji characters
  • Extender
    Characters whose principal function is to extend the value of a preceding alphabetic character or to extend the shape of adjacent characters.
  • FullCompositionExclusion
    Characters that are excluded from composition.
  • GeneralCategoryGroup
    Groupings of multiple General_Category property values.
  • GeneralCategoryOutOfBoundsError
    Error value for impl TryFrom<u8> for GeneralCategory.
  • Graph
    Visible characters.
  • GraphemeBase
    Property used together with the definition of Standard Korean Syllable Block to define “Grapheme base”.
  • GraphemeClusterBreak
    Enumerated property Grapheme_Cluster_Break.
  • GraphemeExtend
    Property used to define “Grapheme extender”.
  • GraphemeLink
    Deprecated property.
  • HangulSyllableType
    Enumerated property Hangul_Syllable_Type
  • HexDigit
    Characters commonly used for the representation of hexadecimal numbers, plus their compatibility equivalents.
  • Hyphen
    Deprecated property.
  • IdContinue
    Characters that can come after the first character in an identifier.
  • IdStart
    Characters that can begin an identifier.
  • Ideographic
    Characters considered to be CJKV (Chinese, Japanese, Korean, and Vietnamese) ideographs, or related siniform ideographs
  • IdsBinaryOperator
    Characters used in Ideographic Description Sequences.
  • IdsTrinaryOperator
    Characters used in Ideographic Description Sequences.
  • IndicSyllabicCategory
    Property Indic_Syllabic_Category. See UAX #44: https://www.unicode.org/reports/tr44/#Indic_Syllabic_Category.
  • JoinControl
    Format control characters which have specific functions for control of cursive joining and ligation.
  • JoiningType
    Enumerated property Joining_Type. See Section 9.2, Arabic Cursive Joining in The Unicode Standard for the summary of each property value.
  • LineBreak
    Enumerated property Line_Break.
  • LogicalOrderException
    A small number of spacing vowel letters occurring in certain Southeast Asian scripts such as Thai and Lao.
  • Lowercase
    Lowercase characters.
  • Math
    Characters used in mathematical notation.
  • NfcInert
    Characters that are inert under NFC, i.e., they do not interact with adjacent characters.
  • NfdInert
    Characters that are inert under NFD, i.e., they do not interact with adjacent characters.
  • NfkcInert
    Characters that are inert under NFKC, i.e., they do not interact with adjacent characters.
  • NfkdInert
    Characters that are inert under NFKD, i.e., they do not interact with adjacent characters.
  • NoncharacterCodePoint
    Code points permanently reserved for internal use.
  • PatternSyntax
    Characters used as syntax in patterns (such as regular expressions).
  • PatternWhiteSpace
    Characters used as whitespace in patterns (such as regular expressions).
  • PrependedConcatenationMark
    A small class of visible format controls, which precede and then span a sequence of other characters, usually digits.
  • Print
    Printable characters (visible characters and whitespace).
  • QuotationMark
    Punctuation characters that function as quotation marks.
  • Radical
    Characters used in the definition of Ideographic Description Sequences.
  • RegionalIndicator
    Regional indicator characters, U+1F1E6..U+1F1FF.
  • Script
    Enumerated property Script.
  • SegmentStarter
    Characters that are starters in terms of Unicode normalization and combining character sequences.
  • SentenceBreak
    Enumerated property Sentence_Break. See “Default Sentence Boundary Specification” in UAX #29 for the summary of each property value: https://www.unicode.org/reports/tr29/#Default_Word_Boundaries.
  • SentenceTerminal
    Punctuation characters that generally mark the end of sentences.
  • SoftDotted
    Characters with a “soft dot”, like i or j.
  • TerminalPunctuation
    Punctuation characters that generally mark the end of textual units.
  • UnifiedIdeograph
    A property which specifies the exact set of Unified CJK Ideographs in the standard.
  • Uppercase
    Uppercase characters.
  • VariationSelector
    Characters that are Variation Selectors.
  • WhiteSpace
    Spaces, separator characters and other control characters which should be treated by programming languages as “white space” for the purpose of parsing elements.
  • WordBreak
    Enumerated property Word_Break.
  • Xdigit
    Hexadecimal digits This is defined for POSIX compatibility.
  • XidContinue
    Characters that can come after the first character in an identifier.
  • XidStart
    Characters that can begin an identifier.

Enums§

Traits§