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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,69 +1,151 @@ | ||
| use std::marker::PhantomData; | ||
| use std::slice::Iter as SliceIter; | ||
| use std::vec::IntoIter as VecIter; | ||
|
|
||
| use rand::seq::SliceRandom; | ||
| use rand::seq::IteratorRandom; | ||
| use serde::Deserialize; | ||
|
|
||
| #[derive(Clone)] | ||
| enum QuoteInner<'a> { | ||
| Builtin(&'static BuiltInQuote), | ||
| Custom(&'a CustomQuote), | ||
| } | ||
|
|
||
| #[derive(Clone)] | ||
| pub struct Quote<'a> { | ||
| _marker: PhantomData<&'a ()>, | ||
| quote: &'static BuiltInQuote, | ||
| inner: QuoteInner<'a>, | ||
| } | ||
|
|
||
| impl Quote<'_> { | ||
| fn new(quote: &'static BuiltInQuote) -> Self { | ||
| Self { | ||
| _marker: PhantomData, | ||
| quote, | ||
| } | ||
| } | ||
|
|
||
| pub fn lines(&self) -> QuoteLinesIter<'_> { | ||
| let inner = match self.inner { | ||
| // Don't listen to clippy, this is very much necessary so we can obtain `VecIter`. | ||
| #[allow(clippy::unnecessary_to_owned)] | ||
| QuoteInner::Builtin(quote) => quote.text.to_vec().into_iter(), | ||
|
|
||
| QuoteInner::Custom(quote) => quote | ||
| .text | ||
| .lines() | ||
| .map(|x| x.trim_end()) | ||
| .collect::<Vec<&str>>() | ||
| .into_iter(), | ||
| }; | ||
|
|
||
| QuoteLinesIter { | ||
| inner: self.quote.text.iter(), | ||
| _marker: PhantomData, | ||
| inner, | ||
| } | ||
| } | ||
|
|
||
| pub fn author(&self) -> &str { | ||
| self.quote.author | ||
| match self.inner { | ||
| QuoteInner::Builtin(x) => x.author, | ||
| QuoteInner::Custom(x) => &x.author, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[derive(Clone)] | ||
| pub struct QuoteLinesIter<'a> { | ||
| inner: SliceIter<'a, &'a str>, | ||
| _marker: PhantomData<&'a ()>, | ||
| inner: VecIter<&'a str>, | ||
| } | ||
|
|
||
| impl<'a> Iterator for QuoteLinesIter<'a> { | ||
| type Item = &'a str; | ||
|
|
||
| fn next(&mut self) -> Option<Self::Item> { | ||
| self.inner.next().copied() | ||
| self.inner.next() | ||
| } | ||
|
|
||
| fn size_hint(&self) -> (usize, Option<usize>) { | ||
| self.inner.size_hint() | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Clone, Deserialize)] | ||
| #[serde(rename_all = "snake_case")] | ||
| pub enum QuotePicker { | ||
| All, | ||
| Custom, | ||
| Builtin, | ||
| } | ||
|
|
||
| #[derive(Debug, Clone, Deserialize)] | ||
| pub struct CustomQuote { | ||
| pub text: String, | ||
| pub author: String, | ||
| } | ||
|
|
||
| #[derive(Debug, Clone)] | ||
| pub struct Quotes {} | ||
| pub struct Quotes { | ||
| pub deterministic: bool, | ||
| pub picker: QuotePicker, | ||
| pub custom_quotes: Vec<CustomQuote>, | ||
| } | ||
|
|
||
| impl Quotes { | ||
| pub fn get(&self, i: usize) -> Option<Quote<'_>> { | ||
| BUILT_IN_QUOTES.get(i).map(Quote::new) | ||
| fn get_builtin_quote(&self) -> Quote<'_> { | ||
| let inner = if self.deterministic { | ||
| &BUILT_IN_QUOTES[0] | ||
| } else { | ||
| choose_random(BUILT_IN_QUOTES.iter()).unwrap() | ||
| }; | ||
|
|
||
| Quote { | ||
| inner: QuoteInner::Builtin(inner), | ||
| } | ||
| } | ||
|
|
||
| fn get_custom_quote(&self) -> Option<Quote<'_>> { | ||
| let inner = if self.deterministic { | ||
| self.custom_quotes.first() | ||
| } else { | ||
| choose_random(self.custom_quotes.iter()) | ||
| }?; | ||
|
|
||
| Some(Quote { | ||
| inner: QuoteInner::Custom(inner), | ||
| }) | ||
| } | ||
|
|
||
| fn get_any_quote(&self) -> Quote<'_> { | ||
| if self.deterministic { | ||
| Quote { | ||
| inner: QuoteInner::Builtin(&BUILT_IN_QUOTES[0]), | ||
| } | ||
| } else { | ||
| let builtin = BUILT_IN_QUOTES.iter().map(|x| Quote { | ||
| inner: QuoteInner::Builtin(x), | ||
| }); | ||
|
|
||
| let custom = self.custom_quotes.iter().map(|x| Quote { | ||
| inner: QuoteInner::Custom(x), | ||
| }); | ||
|
|
||
| let quotes = builtin.chain(custom); | ||
|
|
||
| // SAFETY: `builtin` has at least one element, so `quotes` must also have | ||
| // at least one element. | ||
| choose_random(quotes).unwrap().clone() | ||
| } | ||
| } | ||
|
|
||
| pub fn random(&self) -> Quote<'_> { | ||
| Quote::new(choose_random_quote()) | ||
| match self.picker { | ||
| QuotePicker::All => self.get_any_quote(), | ||
| QuotePicker::Builtin => self.get_builtin_quote(), | ||
| QuotePicker::Custom => self | ||
| .get_custom_quote() | ||
| .unwrap_or_else(|| self.get_builtin_quote()), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| include!(concat!(env!("OUT_DIR"), "/quotes.rs")); | ||
|
|
||
| fn choose_random_quote() -> &'static BuiltInQuote { | ||
| let mut rng = rand::thread_rng(); | ||
|
|
||
| BUILT_IN_QUOTES | ||
| .choose(&mut rng) | ||
| .expect("we have no quotes :(") | ||
| fn choose_random<T, I>(iter: I) -> Option<T> | ||
| where | ||
| I: Iterator<Item = T>, | ||
| { | ||
| iter.choose(&mut rand::thread_rng()) | ||
| } |