# Source code for sphinxcontrib.bibtex.style.referencing.label

    from dataclasses import dataclass, field
    from typing import TYPE_CHECKING, Union

    from sphinxcontrib.bibtex.style.referencing import (
        BracketStyle,
        GroupReferenceStyle,
        PersonStyle,
    )

    from .basic_label import (
        BasicLabelParentheticalReferenceStyle,
        BasicLabelTextualReferenceStyle,
    )
    from .extra_author import ExtraAuthorReferenceStyle
    from .extra_empty import ExtraEmptyReferenceStyle
    from .extra_label import ExtraLabelReferenceStyle
    from .extra_year import ExtraYearReferenceStyle

    if TYPE_CHECKING:
        from pybtex.richtext import BaseText

    @dataclass
    class LabelReferenceStyle(GroupReferenceStyle):
        """Textual or parenthetical reference by label,
        or just by author, label, or year.
        """

        #: Bracket style for textual citations (:cite:t: and variations).
        bracket_textual: BracketStyle = field(default_factory=BracketStyle)

        #: Bracket style for parenthetical citations
        #: (:cite:p: and variations).
        bracket_parenthetical: BracketStyle = field(default_factory=BracketStyle)

        #: Bracket style for author citations
        #: (:cite:author: and variations).
        bracket_author: BracketStyle = field(default_factory=BracketStyle)

        #: Bracket style for label citations
        #: (:cite:label: and variations).
        bracket_label: BracketStyle = field(default_factory=BracketStyle)

        #: Bracket style for year citations
        #: (:cite:year: and variations).
        bracket_year: BracketStyle = field(default_factory=BracketStyle)

        #: Person style.
        person: PersonStyle = field(default_factory=PersonStyle)

        #: Separator between text and reference for textual citations.
        text_reference_sep: Union["BaseText", str] = " "

        #: Separator between pre-text and citation.
        pre_text_sep: Union["BaseText", str] = " "

        #: Separator between citation and post-text.
        post_text_sep: Union["BaseText", str] = ", "

        def __post_init__(self):
            self.styles.extend(
                [
                    BasicLabelParentheticalReferenceStyle(
                        bracket=self.bracket_parenthetical,
                        pre_text_sep=self.pre_text_sep,
                        post_text_sep=self.post_text_sep,
                    ),
                    BasicLabelTextualReferenceStyle(
                        bracket=self.bracket_textual,
                        person=self.person,
                        text_reference_sep=self.text_reference_sep,
                        pre_text_sep=self.pre_text_sep,
                        post_text_sep=self.post_text_sep,
                    ),
                    ExtraAuthorReferenceStyle(
                        bracket=self.bracket_author, person=self.person
                    ),
                    ExtraLabelReferenceStyle(bracket=self.bracket_label),
                    ExtraYearReferenceStyle(bracket=self.bracket_year),
                    ExtraEmptyReferenceStyle(),
                ]
            )
            super().__post_init__()