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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| use core::hash::BuildHasher; | ||
|
|
||
| use crate::{ | ||
| alloc::{borrow::Cow, string::String, vec::Vec}, | ||
| checker::{Checker, Forceucase, HiddenHomonym}, | ||
| classify_casing, Casing, AT_COMPOUND_BEGIN, MAX_WORD_LEN, | ||
| }; | ||
|
|
||
| macro_rules! has_flag { | ||
| ( $flags:expr, $flag:expr ) => {{ | ||
| match $flag { | ||
| Some(flag) => $flags.contains(&flag), | ||
| None => false, | ||
| } | ||
| }}; | ||
| } | ||
|
|
||
| pub(crate) struct Suggester<'a, S: BuildHasher> { | ||
| checker: Checker<'a, S>, | ||
| } | ||
|
|
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| impl<'a, S: BuildHasher> Suggester<'a, S> { | ||
| pub fn new(checker: Checker<'a, S>) -> Self { | ||
| Self { checker } | ||
| } | ||
|
|
||
| pub fn suggest(&self, word: &str, out: &mut Vec<String>) { | ||
| out.clear(); | ||
| if word.len() >= MAX_WORD_LEN { | ||
| return; | ||
| } | ||
|
|
||
| self.suggest_impl(word, out); | ||
| } | ||
|
|
||
| fn suggest_impl(&self, word: &str, out: &mut Vec<String>) { | ||
| if word.is_empty() { | ||
| return; | ||
| } | ||
|
|
||
| // ICONV | ||
| let word = self.checker.aff.input_conversions.convert(word); | ||
| let casing = classify_casing(&word); | ||
| let mut hq_suggestions = false; | ||
|
|
||
| match casing { | ||
| Casing::None => { | ||
| // ? | ||
| if self | ||
| .checker | ||
| .aff | ||
| .options | ||
| .compound_force_uppercase_flag | ||
| .is_some() | ||
| && self | ||
| .checker | ||
| .check_compound::<AT_COMPOUND_BEGIN>(&word, Forceucase::AllowBadForceucase) | ||
| .is_some() | ||
| { | ||
| out.push(self.checker.aff.options.case_handling.titlecase(&word)); | ||
| return; | ||
| } | ||
| hq_suggestions |= self.suggest_low(&word, out); | ||
| } | ||
| _ => todo!(), | ||
| } | ||
|
|
||
| // TODO: remove. Currently used to suppress an unused_variable lint. | ||
| assert!(!hq_suggestions); | ||
|
|
||
| // OCONV | ||
| for suggestion in out.iter_mut() { | ||
| match self.checker.aff.output_conversions.convert(suggestion) { | ||
| Cow::Borrowed(_) => (), | ||
| Cow::Owned(converted) => *suggestion = converted, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn suggest_low(&self, word: &str, out: &mut Vec<String>) -> bool { | ||
| // let len = out.len(); | ||
| self.uppercase_suggest(word, out); | ||
|
|
||
| false | ||
| } | ||
|
|
||
| // TODO: what to take here... a &str? a String? a Cow<str>? | ||
| fn add_suggestion_if_correct(&self, word: String, out: &mut Vec<String>) -> bool { | ||
| let Some(flags) = self.checker.check_word( | ||
| &word, | ||
| Forceucase::ForbidBadForceucase, | ||
| HiddenHomonym::SkipHiddenHomonym, | ||
| ) else { | ||
| return false; | ||
| }; | ||
|
|
||
| if has_flag!(flags, self.checker.aff.options.forbidden_word_flag) { | ||
| return false; | ||
| } | ||
|
|
||
| if self.checker.aff.options.forbid_warn | ||
| && has_flag!(flags, self.checker.aff.options.warn_flag) | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| out.push(word); | ||
| true | ||
| } | ||
|
|
||
| fn uppercase_suggest(&self, word: &str, out: &mut Vec<String>) { | ||
| let upper = self.checker.aff.options.case_handling.uppercase(word); | ||
| self.add_suggestion_if_correct(upper, out); | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod test { | ||
| use super::*; | ||
| use crate::{ | ||
| alloc::{string::ToString, vec}, | ||
| EN_US, | ||
| }; | ||
|
|
||
| fn suggest(word: &str) -> Vec<String> { | ||
| let mut suggestions = Vec::new(); | ||
| EN_US.suggest(word, &mut suggestions); | ||
| suggestions | ||
| } | ||
|
|
||
| #[test] | ||
| fn empty_suggest() { | ||
| assert!(suggest("").is_empty()); | ||
| } | ||
|
|
||
| #[test] | ||
| fn huge_word_is_skipped() { | ||
| assert!(suggest(&"hello".repeat(MAX_WORD_LEN)).is_empty()); | ||
| } | ||
|
|
||
| #[test] | ||
| fn existing_suggestions_are_cleared() { | ||
| let mut suggestions = Vec::new(); | ||
| suggestions.push("example".to_string()); | ||
| EN_US.suggest("", &mut suggestions); | ||
| assert!(suggestions.is_empty()) | ||
| } | ||
|
|
||
| #[test] | ||
| fn uppercase_suggest() { | ||
| // "ANSI" is correct in en_US and not "ansi". | ||
| assert_eq!(suggest("ansi"), vec!["ANSI".to_string()]); | ||
| } | ||
| } |