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use crate::chars::CharClass;
use crate::score::BONUS_BOUNDARY;
/// Configuration data that controls how a matcher behaves
#[non_exhaustive]
#[derive(PartialEq, Eq, Debug, Clone)]
pub struct Config {
/// Characters that act as delimiters and provide bonus
/// for matching the following char
pub(crate) delimiter_chars: &'static [u8],
/// Extra bonus for word boundary after whitespace character or beginning of the string
pub(crate) bonus_boundary_white: u16,
/// Extra bonus for word boundary after slash, colon, semi-colon, and comma
pub(crate) bonus_boundary_delimiter: u16,
pub(crate) initial_char_class: CharClass,
/// Whether to normalize latin script characters to ASCII (enabled by default)
pub normalize: bool,
/// whether to ignore casing
pub ignore_case: bool,
/// Whether to provide a bonus to matches by their distance from the start
/// of the haystack. The bonus is fairly small compared to the normal gap
/// penalty to avoid messing with the normal score heuristic. This setting
/// is not turned on by default and only recommended for autocompletion
/// usecases where the expectation is that the user is typing the entire
/// match. For a full fzf-like fuzzy matcher/picker word segmentation and
/// explicit prefix literals should be used instead.
pub prefer_prefix: bool,
}
impl Config {
/// The default config for nucleo, implemented as a constant since
/// Default::default can not be called in a const context
pub const DEFAULT: Self = {
Config {
delimiter_chars: b"/,:;|",
bonus_boundary_white: BONUS_BOUNDARY + 2,
bonus_boundary_delimiter: BONUS_BOUNDARY + 1,
initial_char_class: CharClass::Whitespace,
normalize: true,
ignore_case: true,
prefer_prefix: false,
}
};
}
impl Config {
/// Configures the matcher with bonuses appropriate for matching file paths.
pub fn set_match_paths(&mut self) {
if cfg!(windows) {
self.delimiter_chars = b"/:\\";
} else {
self.delimiter_chars = b"/:";
}
self.bonus_boundary_white = BONUS_BOUNDARY;
self.initial_char_class = CharClass::Delimiter;
}
/// Configures the matcher with bonuses appropriate for matching file paths.
pub const fn match_paths(mut self) -> Self {
if cfg!(windows) {
self.delimiter_chars = b"/\\";
} else {
self.delimiter_chars = b"/";
}
self.bonus_boundary_white = BONUS_BOUNDARY;
self.initial_char_class = CharClass::Delimiter;
self
}
}
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