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feat(core): improved performance by enhancing cache localization
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| use super::Pattern; | ||
| use smallvec::SmallVec; | ||
|
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| use crate::{CharString, Token}; | ||
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| // A [`Pattern`] that matches against any of a set of provided words. | ||
| // For small sets of short words, it doesn't allocate. | ||
| // | ||
| // Note that any capitalization of the contained words will result in a match. | ||
| #[derive(Debug, Default, Clone)] | ||
| pub struct WordSet { | ||
| words: SmallVec<[CharString; 4]>, | ||
| } | ||
|
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| impl WordSet { | ||
| pub fn add(&mut self, word: &str) { | ||
| let chars = word.chars().collect(); | ||
|
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| if !self.words.contains(&chars) { | ||
| self.words.push(chars); | ||
| } | ||
| } | ||
|
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| pub fn all(words: &[&'static str]) -> Self { | ||
| let mut set = Self::default(); | ||
|
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| for str in words { | ||
| set.add(str); | ||
| } | ||
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| set | ||
| } | ||
| } | ||
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| impl Pattern for WordSet { | ||
| fn matches(&self, tokens: &[Token], source: &[char]) -> usize { | ||
| let Some(tok) = tokens.first() else { | ||
| return 0; | ||
| }; | ||
|
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| if !tok.kind.is_word() { | ||
| return 0; | ||
| } | ||
|
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| let tok_chars = tok.span.get_content(source); | ||
|
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| for word in &self.words { | ||
| if tok_chars.len() != word.len() { | ||
| continue; | ||
| } | ||
|
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| let partial_match = tok_chars | ||
| .iter() | ||
| .zip(word) | ||
| .all(|(a, b)| a.to_ascii_lowercase() == b.to_ascii_lowercase()); | ||
|
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| if partial_match { | ||
| return 1; | ||
| } | ||
| } | ||
|
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| 0 | ||
| } | ||
| } | ||
|
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| #[cfg(test)] | ||
| mod tests { | ||
| use crate::{patterns::DocPattern, Document, Span}; | ||
|
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| use super::WordSet; | ||
|
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| #[test] | ||
| fn fruit() { | ||
| let set = WordSet::all(&["banana", "apple", "orange"]); | ||
|
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| let doc = Document::new_markdown_curated("I ate a banana and an apple today."); | ||
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| let matches = set.find_all_matches_in_doc(&doc); | ||
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| assert_eq!(matches, vec![Span::new(6, 7), Span::new(12, 13)]); | ||
| } | ||
|
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| #[test] | ||
| fn fruit_whack_capitalization() { | ||
| let set = WordSet::all(&["banana", "apple", "orange"]); | ||
|
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| let doc = Document::new_markdown_curated("I Ate A bAnaNa And aN apPlE today."); | ||
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| let matches = set.find_all_matches_in_doc(&doc); | ||
|
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| assert_eq!(matches, vec![Span::new(6, 7), Span::new(12, 13)]); | ||
| } | ||
| } |