token_dict/
dict.rs

1impl AsMut<Self> for TokenDict{
2	fn as_mut(&mut self)->&mut Self{self}
3}
4impl AsRef<Self> for TokenDict{
5	fn as_ref(&self)->&Self{self}
6}
7impl Default for TokenDict{
8	fn default()->Self{
9		let x:[Vec<u8>;0]=[];
10		x.into_iter().collect()
11	}
12}
13#[cfg(feature="serial")]
14impl<'a> Deserialize<'a> for TokenDict{
15	fn deserialize<D:Deserializer<'a>>(deserializer:D)->Result<Self,D::Error>{
16		if deserializer.is_human_readable(){
17			#[derive(Deserialize)]
18			#[serde(untagged)]
19			pub enum MaybeReadable{Yes(String),No(ByteBuf)}
20			impl AsRef<[u8]> for MaybeReadable{
21				fn as_ref(&self)->&[u8]{
22					match self{Self::No(x)=>x.as_ref(),Self::Yes(x)=>x.as_ref()}
23				}
24			}
25
26			let data:Vec<MaybeReadable>=Deserialize::deserialize(deserializer)?;
27			Ok(data.into_iter().collect())
28		}else{
29			#[derive(Deserialize)]
30			#[serde(untagged)]
31			pub enum MaybeByteBuf{Yes(ByteBuf),No(Vec<u8>)}
32			impl AsRef<[u8]> for MaybeByteBuf{
33				fn as_ref(&self)->&[u8]{
34					match self{Self::No(x)=>x.as_ref(),Self::Yes(x)=>x.as_ref()}
35				}
36			}
37
38			let data:Vec<MaybeByteBuf>=Deserialize::deserialize(deserializer)?;
39			Ok(data.into_iter().collect())
40		}
41	}
42}
43impl     DoubleEndedIterator for DictIntoIter{
44	fn next_back(&mut self)->Option<Self::Item>{
45		self.range.next_back().map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
46	}
47	fn nth_back(&mut self,n:usize)->Option<Self::Item>{
48		self.range.nth_back(n).map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
49	}
50	fn rfold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
51		let (range,tokens)=(self.range,self.tokens);
52		let (start,stop)=(range.start,range.end);
53
54		init=tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().cloned().rfold(init,&mut f);
55		SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().cloned().rfold(init,f)
56	}
57}
58impl<'a> DoubleEndedIterator for DictIter<'a>{
59	fn next_back(&mut self)->Option<Self::Item>{
60		self.range.next_back().map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
61	}
62	fn nth_back(&mut self,n:usize)->Option<Self::Item>{
63		self.range.nth_back(n).map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
64	}
65	fn rfold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
66		let (range,tokens)=(self.range,self.tokens);
67		let (start,stop)=(range.start,range.end);
68
69		init=tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().rfold(init,&mut f);
70		SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().rfold(init,f)
71	}
72}
73impl Eq for TokenDict{}
74impl     ExactSizeIterator for DictIntoIter{
75	fn len(&self)->usize{self.range.len()}
76}
77impl<'a> ExactSizeIterator for DictIter<'a>{
78	fn len(&self)->usize{self.range.len()}
79}
80impl<A:AsRef<[u8]>> Extend<A> for TokenDict{
81	fn extend<I:IntoIterator<Item=A>>(&mut self,iter:I){
82		let (ids,tokens)=(Arc::make_mut(&mut self.ids),Arc::make_mut(&mut self.tokens));
83		let maxtokenlen=&mut self.maxtokenlen;
84
85		iter.into_iter().filter(|a|a.as_ref().len()>1).for_each(|a|{
86			let id=u32::try_from(tokens.len()+256).unwrap();
87			let token:Arc<[u8]>=Arc::from(a.as_ref());
88
89			ids[token[0] as usize].insert(token.iter().copied().skip(1),id);
90			*maxtokenlen=(*maxtokenlen).max(token.len());
91			tokens.push(Token::new(id,Some(token)))
92		});
93	}
94}
95impl<A:AsRef<[u8]>> FromIterator<A> for TokenDict{
96	fn from_iter<I:IntoIterator<Item=A>>(iter:I)->Self{
97		let mut maxtokenlen=1;
98		let mut ids:[Trie<_,_>;256]=std::array::from_fn(|_|Trie::new());
99		let tokens:Vec<Token>=iter.into_iter().filter(|t|t.as_ref().len()>1).enumerate().map(|(n,t)|{
100			let id=u32::try_from(n+256).unwrap();
101			let token:Arc<[u8]>=Arc::from(t.as_ref());
102
103			ids[token[0] as usize].insert(token.iter().copied().skip(1),id);
104			maxtokenlen=maxtokenlen.max(token.len());
105
106			Token::new(id,Some(token))
107		}).collect();
108
109		let (ids,tokens)=(Arc::new(ids),Arc::new(tokens));
110		Self{ids,maxtokenlen,tokens}
111	}
112}
113impl Index<u32> for TokenDict{
114	fn index(&self,ix:u32)->&Self::Output{
115		let ix=ix as usize;
116		if ix<256{&SINGLE_BYTES[ix..ix+1]}else{&self.tokens[ix-256]}
117	}
118	type Output=[u8];
119}
120impl Index<usize> for TokenDict{
121	fn index(&self,ix:usize)->&Self::Output{
122		if ix<256{&SINGLE_TOKENS[ix]}else{&self.tokens[ix-256]}
123	}
124	type Output=Token;
125}
126impl<'a> IntoIterator for &'a TokenDict{
127	fn into_iter(self)->Self::IntoIter{self.iter()}
128	type IntoIter=DictIter<'a>;
129	type Item=&'a Token;
130}
131impl     IntoIterator for TokenDict{
132	fn into_iter(self)->Self::IntoIter{
133		DictIntoIter{range:0..self.len(),tokens:self.tokens}
134	}
135	type IntoIter=DictIntoIter;
136	type Item=Token;
137}
138impl<I:Iterator> Iterator for Detokenization<I> where I::Item:Val<u32>{
139	fn fold<B,F:FnMut(B,Self::Item)->B>(self,init:B,mut f:F)->B{
140		self.inner.map(Val::val).fold(init,|acc,tokenid|if tokenid<256{f(acc,tokenid as u8)}else{self.tokens[tokenid as usize].iter().fold(acc,|acc,&b|f(acc,b))})
141	}
142	fn next(&mut self)->Option<u8>{
143		let (inner,position)=(&mut self.inner,&mut self.position);
144		let tokenid=&mut self.tokenid;
145		let tokens=&self.tokens;
146
147		if let Some(b)=if *tokenid<256{(*position==0).then_some(*tokenid as u8)}else{tokens[*tokenid as usize-256].get(*position).map(|&b|b)}{
148			*position+=1;
149			b
150		}else{
151			*position=1;
152			*tokenid=inner.map(Val::val).next()?;
153			if *tokenid<256{*tokenid as u8}else{tokens[*tokenid as usize-256][0]}
154		}.into()
155	}
156	fn size_hint(&self)->(usize,Option<usize>){
157		let (lowertokens,uppertokens)=self.inner.size_hint();
158		let maxtoken=self.maxtokenlen;
159
160		(lowertokens,uppertokens.map(|h|h*maxtoken))
161	}
162	type Item=u8;
163}
164impl Iterator for DictIntoIter{
165	fn count(self)->usize{self.range.count()}
166	fn fold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
167		let (range,tokens)=(self.range,self.tokens);
168		let (start,stop)=(range.start,range.end);
169
170		init=SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().cloned().fold(init,&mut f);
171		tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().cloned().fold(init,f)
172	}
173	fn last(mut self)->Option<Self::Item>{self.next_back()}
174	fn next(&mut self)->Option<Self::Item>{
175		self.range.next().map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
176	}
177	fn nth(&mut self,n:usize)->Option<Self::Item>{
178		self.range.nth(n).map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
179	}
180	fn size_hint(&self)->(usize,Option<usize>){self.range.size_hint()}
181	type Item=Token;
182}
183impl<'a        > Iterator for DictIter<'a>{
184	fn count(self)->usize{self.range.count()}
185	fn fold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
186		let (range,tokens)=(self.range,self.tokens);
187		let (start,stop)=(range.start,range.end);
188
189		init=SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().fold(init,&mut f);
190		tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().fold(init,f)
191	}
192	fn last(mut self)->Option<Self::Item>{self.next_back()}
193	fn next(&mut self)->Option<Self::Item>{
194		self.range.next().map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
195	}
196	fn nth(&mut self,n:usize)->Option<Self::Item>{
197		self.range.nth(n).map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
198	}
199	fn size_hint(&self)->(usize,Option<usize>){self.range.size_hint()}
200	type Item=&'a Token;
201}
202impl<I:Iterator> Iterator for Tokenization<I> where I::Item:Val<u8>{
203	fn next(&mut self)->Option<u32>{
204		let (inner,state)=(&mut self.inner,&mut self.state);
205		let ids=&self.ids;
206		state.extend(inner.map(Val::val).take(state.capacity()-state.len()));
207		if state.len()==0{return None}
208
209		let (tokenlen,&tokenid)=if let Some(t)=ids[state[0] as usize].find_longest_prefix_len(state.iter().copied().skip(1)).filter(|(tokenlen,_tokenid)|*tokenlen>0){t}else{return Some(state.pop_front().unwrap() as u32)};
210		state.drain(..tokenlen+1);
211		return Some(tokenid)
212	}
213	fn size_hint(&self)->(usize,Option<usize>){
214		let (lowerbytes,upperbytes)=self.inner.size_hint();
215		let maxtoken=self.state.capacity();
216		let statelen=self.state.len();
217
218		((lowerbytes+statelen).div_ceil(maxtoken),upperbytes.map(|b|b+statelen))
219	}
220	type Item=u32;
221}
222impl<T> PartialEq<T> for TokenDict where for<'a>&'a T:IntoIterator,for<'a><&'a T as IntoIterator>::Item:AsRef<[u8]>{
223	fn eq(&self,other:&T)->bool{
224		let (mut i,mut j)=(self.iter().skip(256),other.into_iter().filter(|x|x.as_ref().len()>1));
225		loop{
226			let (i,j)=(i.next(),j.next());
227			if let (Some(i),Some(j))=(&i,&j){
228				if *i!=j.as_ref(){return false}
229			}else if i.is_none()&&j.is_none(){
230				return true
231			}else{
232				return false
233			}
234		}
235	}
236}
237#[cfg(feature="serial")]
238impl Serialize for TokenDict{
239	fn serialize<S:Serializer>(&self,serializer:S)->Result<S::Ok,S::Error>{
240		if serializer.is_human_readable(){
241			#[derive(Serialize)]
242			#[serde(untagged)]
243			pub enum MaybeReadable<'a>{Yes(&'a str),No(&'a Bytes)}
244
245			let data:Vec<MaybeReadable>=self.iter().skip(256).map(|t|str::from_utf8(&*t).ok().map(MaybeReadable::Yes).unwrap_or(MaybeReadable::No(Bytes::new(&*t)))).collect();
246			data.serialize(serializer)
247		}else{
248			let data:Vec<&Bytes>=self.iter().skip(256).map(|t|Bytes::new(&**t)).collect();
249			data.serialize(serializer)
250		}
251	}
252}
253impl TokenDict{
254	/// decodes the tokens into bytes
255	pub fn detokenize<I:IntoIterator>(&self,tokens:I)->Detokenization<I::IntoIter> where I::Item:Val<u32>{
256		Detokenization{inner:tokens.into_iter().fuse(),maxtokenlen:self.maxtokenlen,position:1,tokenid:0,tokens:self.tokens.clone()}
257	}
258	/// creates an iterator over tokens
259	pub fn detoken_iter<I:IntoIterator>(&self,tokens:I)->impl Iterator<Item=Token> where I::Item:Val<u32>{
260		let tokenizer=self.clone();
261		tokens.into_iter().map(move|id|tokenizer[id.val() as usize].clone())
262	}
263	/// decodes the tokens into chars, replacing invalid unicode with replacement character
264	pub fn detokenize_str<I:IntoIterator>(&self,tokens:I)->impl Iterator<Item=char> where I::Item:Val<u32>{
265		UTF8CharIter::from(self.detokenize(tokens)).map(|r|if let Ok(c)=r{c}else{char::REPLACEMENT_CHARACTER})
266	}
267	/// decodes the tokens into chars, replacing invalid unicode with replacement character
268	pub fn detokenize_string<I:IntoIterator>(&self,tokens:I)->String where I::Item:Val<u32>{self.detokenize_str(tokens).collect()}
269	/// accumulates frequencies of each token in the text as if they were tokenized by this tokenizer
270	pub fn frequencies<I:IntoIterator,O:Into<Option<Vec<usize>>>>(&self,data:I,freq:O)->Vec<usize> where I::Item:Val<u8>{
271		let mut freq=freq.into().unwrap_or_default();
272		if freq.len()<self.len(){freq.resize(self.len(),0)}
273
274		for t in self.tokenize(data){freq[t as usize]+=1}
275		freq
276	}
277	/// gets an id for the token if it is in the dictionary
278	pub fn get_id(&self,token:&[u8])->Option<u32>{self.ids[*token.get(0)? as usize].get(token.iter().copied().skip(1)).copied()}
279	/// decodes the tokens into bytes
280	pub fn into_detokenize<I:IntoIterator>(self,tokens:I)->Detokenization<I::IntoIter> where I::Item:Val<u32>{
281		Detokenization{inner:tokens.into_iter().fuse(),maxtokenlen:self.maxtokenlen,position:1,tokenid:0,tokens:self.tokens}
282	}
283	/// creates an iterator over tokens
284	pub fn into_detoken_iter<I:IntoIterator>(self,tokens:I)->impl Iterator<Item=Token> where I::Item:Val<u32>{
285		let tokenizer=self.clone();
286		tokens.into_iter().map(move|id|tokenizer[id.val() as usize].clone())
287	}
288	/// creates an iterator over tokens
289	pub fn into_token_iter<I:IntoIterator>(self,bytes:I)->impl Iterator<Item=Token> where I::Item:Val<u8>{
290		let tokenizer=self.clone();
291		self.tokenize(bytes).map(move|id|tokenizer[id as usize].clone())
292	}
293	/// converts the bytes to tokens
294	pub fn into_tokenize<I:IntoIterator>(self,bytes:I)->Tokenization<I::IntoIter> where I::Item:Val<u8>{
295		Tokenization{ids:self.ids,inner:bytes.into_iter().fuse(),state:VecDeque::with_capacity(self.maxtokenlen)}
296	}
297	/// returns an interator over the possible tokens generated by this tokenizer
298	pub fn iter(&self)->DictIter<'_>{
299		DictIter{range:0..self.len(),tokens:&self.tokens}
300	}
301	/// returns the number of possible token ids generated by this tokenizer
302	pub fn len(&self)->usize{self.tokens.len()+256}
303	/// finds token pairs and returns new tokens of them mapped to their frequencies with ids as if they were added to this dictionary. Tokens with ids within the current dictionary will have those ids
304	pub fn pairs<I:IntoIterator,O:Into<Option<HashMap<Token,usize>>>>(&self,data:I,freq:O)->HashMap<Token,usize> where I::Item:Val<u8>{
305		let mut freq=freq.into().unwrap_or_default();
306		let mut nexttokenid=freq.keys().map(|t|t.id()+1).chain([self.len() as u32]).max().unwrap();
307		let mut previous:Option<u32>=None;
308		let mut temp:Vec<u8>=Vec::new();
309
310		self.tokenize(data).for_each(|id|{
311			if let Some(previous)=previous{
312				temp.clear();
313				temp.extend(self[previous as usize].clone());
314				temp.extend(self[id as usize].clone());
315
316				if let Some(f)=freq.get_mut(temp.as_slice()){
317					*f+=1
318				}else{
319					let newid=if let Some(id)=self.get_id(&temp){id}else{post_inc!(nexttokenid)};
320					let token=Token::new(newid,Some(Arc::from(temp.as_slice())));
321
322					freq.insert(token,1);
323				}
324			}
325			previous=Some(id);
326		});
327		freq
328	}
329	/// adds the token to the dictionary
330	pub fn push<A:AsRef<[u8]>>(&mut self,token:A){self.extend(Some(token))}
331	/// converts the string to a token vec
332	pub fn string_to_tokens<S:?Sized+AsRef<str>>(&self,input:&S)->Vec<u32>{self.tokenize(input.as_ref().as_bytes()).collect()}
333	/// creates an iterator over tokens
334	pub fn token_iter<I:IntoIterator>(&self,bytes:I)->impl Iterator<Item=Token> where I::Item:Val<u8>{
335		let tokenizer=self.clone();
336		self.tokenize(bytes).map(move|id|tokenizer[id as usize].clone())
337	}
338	/// converts the bytes to tokens
339	pub fn tokenize<I:IntoIterator>(&self,bytes:I)->Tokenization<I::IntoIter> where I::Item:Val<u8>{
340		Tokenization{ids:self.ids.clone(),inner:bytes.into_iter().fuse(),state:VecDeque::with_capacity(self.maxtokenlen)}
341	}
342	/// converts the string to tokens
343	pub fn tokenize_str<'a,S:?Sized+AsRef<str>>(&self,input:&'a S)->Tokenization<SliceIter<'a,u8>>{self.tokenize(input.as_ref().as_bytes())}
344	/// converts the string to tokens
345	pub fn tokenize_string(&self,input:String)->Tokenization<VecIntoIter<u8>>{self.tokenize(Vec::from(input))}
346	/// converts the token vec to string
347	pub fn tokens_to_string<V:?Sized+AsRef<[u32]>>(&self,input:&V)->String{String::from_utf8_lossy(&self.detokenize(input.as_ref()).collect::<Vec<u8>>()).to_string()}
348}
349
350macro_rules! post_inc {
351	($e:expr) => {{
352		let old = $e;
353		$e += 1;
354		old
355	}};
356}
357
358#[cfg(test)]
359mod tests{
360	#[test]
361	fn tokenizer_iter(){
362		let tokenizer:TokenDict=["aa","bb","cc"].into_iter().collect();
363		let t2:TokenDict=tokenizer.iter().collect();
364		assert_eq!(tokenizer.tokenize_str("ccaabb").collect::<Vec<_>>(),t2.tokenize_str("ccaabb").collect::<Vec<_>>());
365	}
366	#[test]
367	fn bytes_only(){
368		let teststring="oishsoghohhduihahdufghud";
369		let tokenizer=TokenDict::default();
370		let tokens:Vec<u32>=tokenizer.tokenize_str(teststring).collect();
371		let detokens:Vec<u8>=tokenizer.detokenize(tokens).collect();
372
373		assert_eq!(detokens.as_slice(),teststring.as_bytes());
374	}
375	#[test]
376	fn there_are_tokens_yay(){
377		let teststring="there are tokens! yay";
378		let tokenizer:TokenDict=["there","are","tokens","yay"].into_iter().collect();
379		let tokens:Vec<u32>=tokenizer.tokenize(teststring.bytes()).collect();
380		let detokens:Vec<u8>=tokenizer.detokenize(&tokens).collect();
381
382		assert_eq!(tokens.len(),8);
383		assert_eq!(detokens.as_slice(),teststring.as_bytes());
384	}
385	#[test]
386	fn test_default_token_dict_detokenize_empty() {
387		let dict = TokenDict::default();
388		let inp:Vec<u32>=vec![];
389		let out: Vec<u8> = dict.detokenize(inp).collect();
390		assert!(out.is_empty(), "Detokenizing an empty input should yield no bytes");
391	}
392	use super::*;
393}
394
395pub (crate) const SINGLE_TOKENS:&[Token;256]=&[Token::single(0),Token::single(1),Token::single(2),Token::single(3),Token::single(4),Token::single(5),Token::single(6),Token::single(7),Token::single(8),Token::single(9),Token::single(10),Token::single(11),Token::single(12),Token::single(13),Token::single(14),Token::single(15),Token::single(16),Token::single(17),Token::single(18),Token::single(19),Token::single(20),Token::single(21),Token::single(22),Token::single(23),Token::single(24),Token::single(25),Token::single(26),Token::single(27),Token::single(28),Token::single(29),Token::single(30),Token::single(31),Token::single(32),Token::single(33),Token::single(34),Token::single(35),Token::single(36),Token::single(37),Token::single(38),Token::single(39),Token::single(40),Token::single(41),Token::single(42),Token::single(43),Token::single(44),Token::single(45),Token::single(46),Token::single(47),Token::single(48),Token::single(49),Token::single(50),Token::single(51),Token::single(52),Token::single(53),Token::single(54),Token::single(55),Token::single(56),Token::single(57),Token::single(58),Token::single(59),Token::single(60),Token::single(61),Token::single(62),Token::single(63),Token::single(64),Token::single(65),Token::single(66),Token::single(67),Token::single(68),Token::single(69),Token::single(70),Token::single(71),Token::single(72),Token::single(73),Token::single(74),Token::single(75),Token::single(76),Token::single(77),Token::single(78),Token::single(79),Token::single(80),Token::single(81),Token::single(82),Token::single(83),Token::single(84),Token::single(85),Token::single(86),Token::single(87),Token::single(88),Token::single(89),Token::single(90),Token::single(91),Token::single(92),Token::single(93),Token::single(94),Token::single(95),Token::single(96),Token::single(97),Token::single(98),Token::single(99),Token::single(100),Token::single(101),Token::single(102),Token::single(103),Token::single(104),Token::single(105),Token::single(106),Token::single(107),Token::single(108),Token::single(109),Token::single(110),Token::single(111),Token::single(112),Token::single(113),Token::single(114),Token::single(115),Token::single(116),Token::single(117),Token::single(118),Token::single(119),Token::single(120),Token::single(121),Token::single(122),Token::single(123),Token::single(124),Token::single(125),Token::single(126),Token::single(127),Token::single(128),Token::single(129),Token::single(130),Token::single(131),Token::single(132),Token::single(133),Token::single(134),Token::single(135),Token::single(136),Token::single(137),Token::single(138),Token::single(139),Token::single(140),Token::single(141),Token::single(142),Token::single(143),Token::single(144),Token::single(145),Token::single(146),Token::single(147),Token::single(148),Token::single(149),Token::single(150),Token::single(151),Token::single(152),Token::single(153),Token::single(154),Token::single(155),Token::single(156),Token::single(157),Token::single(158),Token::single(159),Token::single(160),Token::single(161),Token::single(162),Token::single(163),Token::single(164),Token::single(165),Token::single(166),Token::single(167),Token::single(168),Token::single(169),Token::single(170),Token::single(171),Token::single(172),Token::single(173),Token::single(174),Token::single(175),Token::single(176),Token::single(177),Token::single(178),Token::single(179),Token::single(180),Token::single(181),Token::single(182),Token::single(183),Token::single(184),Token::single(185),Token::single(186),Token::single(187),Token::single(188),Token::single(189),Token::single(190),Token::single(191),Token::single(192),Token::single(193),Token::single(194),Token::single(195),Token::single(196),Token::single(197),Token::single(198),Token::single(199),Token::single(200),Token::single(201),Token::single(202),Token::single(203),Token::single(204),Token::single(205),Token::single(206),Token::single(207),Token::single(208),Token::single(209),Token::single(210),Token::single(211),Token::single(212),Token::single(213),Token::single(214),Token::single(215),Token::single(216),Token::single(217),Token::single(218),Token::single(219),Token::single(220),Token::single(221),Token::single(222),Token::single(223),Token::single(224),Token::single(225),Token::single(226),Token::single(227),Token::single(228),Token::single(229),Token::single(230),Token::single(231),Token::single(232),Token::single(233),Token::single(234),Token::single(235),Token::single(236),Token::single(237),Token::single(238),Token::single(239),Token::single(240),Token::single(241),Token::single(242),Token::single(243),Token::single(244),Token::single(245),Token::single(246),Token::single(247),Token::single(248),Token::single(249),Token::single(250),Token::single(251),Token::single(252),Token::single(253),Token::single(254),Token::single(255)];
396#[derive(Clone,Debug)]
397/// a simple dictionary based detokenizer
398pub struct Detokenization<I:Iterator> where I::Item:Val<u32>{inner:Fuse<I>,maxtokenlen:usize,position:usize,tokenid:u32,tokens:Arc<Vec<Token>>}
399#[derive(Clone,Debug)]
400/// iterator for TokenDict
401pub struct DictIter<'a>{range:Range<usize>,tokens:&'a [Token]}
402#[derive(Clone,Debug)]
403/// intoiterator for TokenDict
404pub struct DictIntoIter{range:Range<usize>,tokens:Arc<Vec<Token>>}
405#[derive(Clone,Debug)]
406/// a simple dictionary based tokenizer dictionary where single bytes implicitly form the lower 256 ids. It's reference counted and cheap to clone. When collecting a TokenDict from an iterator, tokens get ids starting from 256, except any tokens not greater than 1 byte long are skipped
407pub struct TokenDict{ids:Arc<[Trie<u8,u32>;256]>,maxtokenlen:usize,tokens:Arc<Vec<Token>>}
408#[derive(Clone,Debug)]
409/// a simple dictionary based tokenizer iterator
410pub struct Tokenization<I:Iterator> where I::Item:Val<u8>{ids:Arc<[Trie<u8,u32>;256]>,inner:Fuse<I>,state:VecDeque<u8>}
411
412use crate::{Token,UTF8CharIter,Val,token::SINGLE_BYTES};
413use post_inc;
414use ptrie::Trie;
415#[cfg(feature="serial")]
416use serde::{Deserialize,Deserializer,Serialize,Serializer};
417#[cfg(feature="serial")]
418use serde_bytes::{Bytes,ByteBuf};
419use std::{
420	collections::{HashMap,VecDeque},cmp::{Eq,PartialEq},iter::{Extend,Fuse},ops::{Index,Range},slice::Iter as SliceIter,sync::Arc,vec::IntoIter as VecIntoIter,
421};
token_dict/dict.rs

token_dict/
dict.rs
