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 AsRef<[Token]> for TokenDict{
8	fn as_ref(&self)->&[Token]{&self.tokens}
9}
10impl Default for TokenDict{
11	fn default()->Self{
12		let x:[Vec<u8>;0]=[];
13		x.into_iter().collect()
14	}
15}
16#[cfg(feature="serial")]
17impl<'a> Deserialize<'a> for TokenDict{
18	fn deserialize<D:Deserializer<'a>>(deserializer:D)->Result<Self,D::Error>{
19		if deserializer.is_human_readable(){
20			#[derive(Deserialize)]
21			#[serde(untagged)]
22			pub enum MaybeReadable{Yes(String),No(ByteBuf)}
23			impl AsRef<[u8]> for MaybeReadable{
24				fn as_ref(&self)->&[u8]{
25					match self{Self::No(x)=>x.as_ref(),Self::Yes(x)=>x.as_ref()}
26				}
27			}
28
29			let data:Vec<MaybeReadable>=Deserialize::deserialize(deserializer)?;
30			Ok(data.into_iter().collect())
31		}else{
32			#[derive(Deserialize)]
33			#[serde(untagged)]
34			pub enum MaybeByteBuf{Yes(ByteBuf),No(Vec<u8>)}
35			impl AsRef<[u8]> for MaybeByteBuf{
36				fn as_ref(&self)->&[u8]{
37					match self{Self::No(x)=>x.as_ref(),Self::Yes(x)=>x.as_ref()}
38				}
39			}
40
41			let data:Vec<MaybeByteBuf>=Deserialize::deserialize(deserializer)?;
42			Ok(data.into_iter().collect())
43		}
44	}
45}
46impl     DoubleEndedIterator for DictIntoIter{
47	fn next_back(&mut self)->Option<Self::Item>{
48		self.range.next_back().map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
49	}
50	fn nth_back(&mut self,n:usize)->Option<Self::Item>{
51		self.range.nth_back(n).map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
52	}
53	fn rfold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
54		let (range,tokens)=(self.range,self.tokens);
55		let (start,stop)=(range.start,range.end);
56
57		init=tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().cloned().rfold(init,&mut f);
58		SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().cloned().rfold(init,f)
59	}
60}
61impl<'a> DoubleEndedIterator for DictIter<'a>{
62	fn next_back(&mut self)->Option<Self::Item>{
63		self.range.next_back().map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
64	}
65	fn nth_back(&mut self,n:usize)->Option<Self::Item>{
66		self.range.nth_back(n).map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
67	}
68	fn rfold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
69		let (range,tokens)=(self.range,self.tokens);
70		let (start,stop)=(range.start,range.end);
71
72		init=tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().rfold(init,&mut f);
73		SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().rfold(init,f)
74	}
75}
76impl Eq for TokenDict{}
77impl     ExactSizeIterator for DictIntoIter{
78	fn len(&self)->usize{self.range.len()}
79}
80impl<'a> ExactSizeIterator for DictIter<'a>{
81	fn len(&self)->usize{self.range.len()}
82}
83impl<A:AsRef<[u8]>> Extend<A> for TokenDict{
84	fn extend<I:IntoIterator<Item=A>>(&mut self,iter:I){
85		let (ids,tokens)=(Arc::make_mut(&mut self.ids),Arc::make_mut(&mut self.tokens));
86		let maxtokenlen=&mut self.maxtokenlen;
87
88		iter.into_iter().filter(|a|a.as_ref().len()>1).for_each(|a|{
89			let id=u32::try_from(tokens.len()+256).unwrap();
90			let token:Arc<[u8]>=Arc::from(a.as_ref());
91
92			ids[token[0] as usize].insert(token.iter().copied().skip(1),id);
93			*maxtokenlen=(*maxtokenlen).max(token.len());
94			tokens.push(Token::new(id,Some(token)))
95		});
96	}
97}
98impl<A:AsRef<[u8]>> FromIterator<A> for TokenDict{
99	fn from_iter<I:IntoIterator<Item=A>>(iter:I)->Self{
100		let mut maxtokenlen=1;
101		let mut ids:[Trie<_,_>;256]=std::array::from_fn(|_|Trie::new());
102		let tokens:Vec<Token>=iter.into_iter().filter(|t|t.as_ref().len()>1).enumerate().map(|(n,t)|{
103			let id=u32::try_from(n+256).unwrap();
104			let token:Arc<[u8]>=Arc::from(t.as_ref());
105
106			ids[token[0] as usize].insert(token.iter().copied().skip(1),id);
107			maxtokenlen=maxtokenlen.max(token.len());
108
109			Token::new(id,Some(token))
110		}).collect();
111
112		let (ids,tokens)=(Arc::new(ids),Arc::new(tokens));
113		Self{ids,maxtokenlen,tokens}
114	}
115}
116impl Index<u32> for TokenDict{
117	fn index(&self,ix:u32)->&Self::Output{
118		let ix=ix as usize;
119		if ix<256{&SINGLE_BYTES[ix..ix+1]}else{&self.tokens[ix-256]}
120	}
121	type Output=[u8];
122}
123impl Index<usize> for TokenDict{
124	fn index(&self,ix:usize)->&Self::Output{
125		if ix<256{&SINGLE_TOKENS[ix]}else{&self.tokens[ix-256]}
126	}
127	type Output=Token;
128}
129impl<'a> IntoIterator for &'a TokenDict{
130	fn into_iter(self)->Self::IntoIter{self.iter()}
131	type IntoIter=DictIter<'a>;
132	type Item=&'a Token;
133}
134impl     IntoIterator for TokenDict{
135	fn into_iter(self)->Self::IntoIter{
136		DictIntoIter{range:0..self.len(),tokens:self.tokens}
137	}
138	type IntoIter=DictIntoIter;
139	type Item=Token;
140}
141impl<I:Iterator> Iterator for Detokenization<I> where I::Item:Val<u32>{
142	fn fold<B,F:FnMut(B,Self::Item)->B>(self,init:B,mut f:F)->B{
143		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))})
144	}
145	fn next(&mut self)->Option<u8>{
146		let (inner,position)=(&mut self.inner,&mut self.position);
147		let tokenid=&mut self.tokenid;
148		let tokens=&self.tokens;
149
150		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)}{
151			*position+=1;
152			b
153		}else{
154			*position=1;
155			*tokenid=inner.map(Val::val).next()?;
156			if *tokenid<256{*tokenid as u8}else{tokens[*tokenid as usize-256][0]}
157		}.into()
158	}
159	fn size_hint(&self)->(usize,Option<usize>){
160		let (lowertokens,uppertokens)=self.inner.size_hint();
161		let maxtoken=self.maxtokenlen;
162
163		(lowertokens,uppertokens.map(|h|h*maxtoken))
164	}
165	type Item=u8;
166}
167impl Iterator for DictIntoIter{
168	fn count(self)->usize{self.range.count()}
169	fn fold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
170		let (range,tokens)=(self.range,self.tokens);
171		let (start,stop)=(range.start,range.end);
172
173		init=SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().cloned().fold(init,&mut f);
174		tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().cloned().fold(init,f)
175	}
176	fn last(mut self)->Option<Self::Item>{self.next_back()}
177	fn next(&mut self)->Option<Self::Item>{
178		self.range.next().map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
179	}
180	fn nth(&mut self,n:usize)->Option<Self::Item>{
181		self.range.nth(n).map(|n|if n<256{SINGLE_TOKENS[n].clone()}else{self.tokens[n-256].clone()})
182	}
183	fn size_hint(&self)->(usize,Option<usize>){self.range.size_hint()}
184	type Item=Token;
185}
186impl<'a        > Iterator for DictIter<'a>{
187	fn count(self)->usize{self.range.count()}
188	fn fold<B,F:FnMut(B,Self::Item)->B>(self,mut init:B,mut f:F)->B{
189		let (range,tokens)=(self.range,self.tokens);
190		let (start,stop)=(range.start,range.end);
191
192		init=SINGLE_TOKENS[start.min(256)..stop.min(256)].iter().fold(init,&mut f);
193		tokens[start.saturating_sub(256)..stop.saturating_sub(256)].iter().fold(init,f)
194	}
195	fn last(mut self)->Option<Self::Item>{self.next_back()}
196	fn next(&mut self)->Option<Self::Item>{
197		self.range.next().map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
198	}
199	fn nth(&mut self,n:usize)->Option<Self::Item>{
200		self.range.nth(n).map(|n|if n<256{&SINGLE_TOKENS[n]}else{&self.tokens[n-256]})
201	}
202	fn size_hint(&self)->(usize,Option<usize>){self.range.size_hint()}
203	type Item=&'a Token;
204}
205impl<I:Iterator> Iterator for Tokenization<I> where I::Item:Val<u8>{
206	fn next(&mut self)->Option<u32>{
207		let (inner,state)=(&mut self.inner,&mut self.state);
208		let ids=&self.ids;
209		state.extend(inner.map(Val::val).take(state.capacity()-state.len()));
210		if state.len()==0{return None}
211
212		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)};
213		state.drain(..tokenlen+1);
214		return Some(tokenid)
215	}
216	fn size_hint(&self)->(usize,Option<usize>){
217		let (lowerbytes,upperbytes)=self.inner.size_hint();
218		let maxtoken=self.state.capacity();
219		let statelen=self.state.len();
220
221		((lowerbytes+statelen).div_ceil(maxtoken),upperbytes.map(|b|b+statelen))
222	}
223	type Item=u32;
224}
225impl<T> PartialEq<T> for TokenDict where for<'a>&'a T:IntoIterator,for<'a><&'a T as IntoIterator>::Item:AsRef<[u8]>{
226	fn eq(&self,other:&T)->bool{
227		let (mut i,mut j)=(self.iter().skip(256),other.into_iter().filter(|x|x.as_ref().len()>1));
228		loop{
229			let (i,j)=(i.next(),j.next());
230			if let (Some(i),Some(j))=(&i,&j){
231				if *i!=j.as_ref(){return false}
232			}else if i.is_none()&&j.is_none(){
233				return true
234			}else{
235				return false
236			}
237		}
238	}
239}
240#[cfg(feature="serial")]
241impl Serialize for TokenDict{
242	fn serialize<S:Serializer>(&self,serializer:S)->Result<S::Ok,S::Error>{
243		if serializer.is_human_readable(){
244			#[derive(Serialize)]
245			#[serde(untagged)]
246			pub enum MaybeReadable<'a>{Yes(&'a str),No(&'a Bytes)}
247
248			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();
249			data.serialize(serializer)
250		}else{
251			let data:Vec<&Bytes>=self.iter().skip(256).map(|t|Bytes::new(&**t)).collect();
252			data.serialize(serializer)
253		}
254	}
255}
256impl TokenDict{
257	/// decodes the tokens into bytes
258	pub fn detokenize<I:IntoIterator>(&self,tokens:I)->Detokenization<I::IntoIter> where I::Item:Val<u32>{
259		Detokenization{inner:tokens.into_iter().fuse(),maxtokenlen:self.maxtokenlen,position:1,tokenid:0,tokens:self.tokens.clone()}
260	}
261	/// creates an iterator over tokens
262	pub fn detoken_iter<I:IntoIterator>(&self,tokens:I)->impl Iterator<Item=Token> where I::Item:Val<u32>{
263		let tokenizer=self.clone();
264		tokens.into_iter().map(move|id|tokenizer[id.val() as usize].clone())
265	}
266	/// decodes the tokens into chars, replacing invalid unicode with replacement character
267	pub fn detokenize_str<I:IntoIterator>(&self,tokens:I)->impl Iterator<Item=char> where I::Item:Val<u32>{
268		UTF8CharIter::from(self.detokenize(tokens)).map(|r|if let Ok(c)=r{c}else{char::REPLACEMENT_CHARACTER})
269	}
270	/// decodes the tokens into chars, replacing invalid unicode with replacement character
271	pub fn detokenize_string<I:IntoIterator>(&self,tokens:I)->String where I::Item:Val<u32>{self.detokenize_str(tokens).collect()}
272	/// accumulates frequencies of each token in the text as if they were tokenized by this tokenizer
273	pub fn frequencies<I:IntoIterator,O:Into<Option<Vec<usize>>>>(&self,data:I,freq:O)->Vec<usize> where I::Item:Val<u8>{
274		let mut freq=freq.into().unwrap_or_default();
275		if freq.len()<self.len(){freq.resize(self.len(),0)}
276
277		for t in self.tokenize(data){freq[t as usize]+=1}
278		freq
279	}
280	/// gets an id for the token if it is in the dictionary
281	pub fn get_id(&self,token:&[u8])->Option<u32>{self.ids[*token.get(0)? as usize].get(token.iter().copied().skip(1)).copied()}
282	/// decodes the tokens into bytes
283	pub fn into_detokenize<I:IntoIterator>(self,tokens:I)->Detokenization<I::IntoIter> where I::Item:Val<u32>{
284		Detokenization{inner:tokens.into_iter().fuse(),maxtokenlen:self.maxtokenlen,position:1,tokenid:0,tokens:self.tokens}
285	}
286	/// creates an iterator over tokens
287	pub fn into_detoken_iter<I:IntoIterator>(self,tokens:I)->impl Iterator<Item=Token> where I::Item:Val<u32>{
288		let tokenizer=self.clone();
289		tokens.into_iter().map(move|id|tokenizer[id.val() as usize].clone())
290	}
291	/// creates an iterator over tokens
292	pub fn into_token_iter<I:IntoIterator>(self,bytes:I)->impl Iterator<Item=Token> where I::Item:Val<u8>{
293		let tokenizer=self.clone();
294		self.tokenize(bytes).map(move|id|tokenizer[id as usize].clone())
295	}
296	/// converts the bytes to tokens
297	pub fn into_tokenize<I:IntoIterator>(self,bytes:I)->Tokenization<I::IntoIter> where I::Item:Val<u8>{
298		Tokenization{ids:self.ids,inner:bytes.into_iter().fuse(),state:VecDeque::with_capacity(self.maxtokenlen)}
299	}
300	/// returns an interator over the possible tokens generated by this tokenizer
301	pub fn iter(&self)->DictIter<'_>{
302		DictIter{range:0..self.len(),tokens:&self.tokens}
303	}
304	/// returns the number of possible token ids generated by this tokenizer
305	pub fn len(&self)->usize{self.tokens.len()+256}
306	/// 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
307	pub fn pairs<I:IntoIterator,O:Into<Option<HashMap<Token,usize>>>>(&self,data:I,freq:O)->HashMap<Token,usize> where I::Item:Val<u8>{
308		let mut freq=freq.into().unwrap_or_default();
309		let mut nexttokenid=freq.keys().map(|t|t.id()+1).chain([self.len() as u32]).max().unwrap();
310		let mut previous:Option<u32>=None;
311		let mut temp:Vec<u8>=Vec::new();
312
313		self.tokenize(data).for_each(|id|{
314			if let Some(previous)=previous{
315				temp.clear();
316				temp.extend(self[previous as usize].clone());
317				temp.extend(self[id as usize].clone());
318
319				if let Some(f)=freq.get_mut(temp.as_slice()){
320					*f+=1
321				}else{
322					let newid=if let Some(id)=self.get_id(&temp){id}else{post_inc!(nexttokenid)};
323					let token=Token::new(newid,Some(Arc::from(temp.as_slice())));
324
325					freq.insert(token,1);
326				}
327			}
328			previous=Some(id);
329		});
330		freq
331	}
332	/// adds the token to the dictionary
333	pub fn push<A:AsRef<[u8]>>(&mut self,token:A){self.extend(Some(token))}
334	/// converts the string to a token vec
335	pub fn string_to_tokens<S:?Sized+AsRef<str>>(&self,input:&S)->Vec<u32>{self.tokenize(input.as_ref().as_bytes()).collect()}
336	/// creates an iterator over tokens
337	pub fn token_iter<I:IntoIterator>(&self,bytes:I)->impl Iterator<Item=Token> where I::Item:Val<u8>{
338		let tokenizer=self.clone();
339		self.tokenize(bytes).map(move|id|tokenizer[id as usize].clone())
340	}
341	/// converts the bytes to tokens
342	pub fn tokenize<I:IntoIterator>(&self,bytes:I)->Tokenization<I::IntoIter> where I::Item:Val<u8>{
343		Tokenization{ids:self.ids.clone(),inner:bytes.into_iter().fuse(),state:VecDeque::with_capacity(self.maxtokenlen)}
344	}
345	/// converts the string to tokens
346	pub fn tokenize_str<'a,S:?Sized+AsRef<str>>(&self,input:&'a S)->Tokenization<SliceIter<'a,u8>>{self.tokenize(input.as_ref().as_bytes())}
347	/// converts the string to tokens
348	pub fn tokenize_string(&self,input:String)->Tokenization<VecIntoIter<u8>>{self.tokenize(Vec::from(input))}
349	/// converts the token vec to string
350	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()}
351}
352
353macro_rules! post_inc {
354	($e:expr) => {{
355		let old = $e;
356		$e += 1;
357		old
358	}};
359}
360
361#[cfg(test)]
362mod tests{
363	#[test]
364	fn tokenizer_iter(){
365		let tokenizer:TokenDict=["aa","bb","cc"].into_iter().collect();
366		let t2:TokenDict=tokenizer.iter().collect();
367		assert_eq!(tokenizer.tokenize_str("ccaabb").collect::<Vec<_>>(),t2.tokenize_str("ccaabb").collect::<Vec<_>>());
368	}
369	#[test]
370	fn bytes_only(){
371		let teststring="oishsoghohhduihahdufghud";
372		let tokenizer=TokenDict::default();
373		let tokens:Vec<u32>=tokenizer.tokenize_str(teststring).collect();
374		let detokens:Vec<u8>=tokenizer.detokenize(tokens).collect();
375
376		assert_eq!(detokens.as_slice(),teststring.as_bytes());
377	}
378	#[test]
379	fn there_are_tokens_yay(){
380		let teststring="there are tokens! yay";
381		let tokenizer:TokenDict=["there","are","tokens","yay"].into_iter().collect();
382		let tokens:Vec<u32>=tokenizer.tokenize(teststring.bytes()).collect();
383		let detokens:Vec<u8>=tokenizer.detokenize(&tokens).collect();
384
385		assert_eq!(tokens.len(),8);
386		assert_eq!(detokens.as_slice(),teststring.as_bytes());
387	}
388	#[test]
389	fn test_default_token_dict_detokenize_empty() {
390		let dict = TokenDict::default();
391		let inp:Vec<u32>=vec![];
392		let out: Vec<u8> = dict.detokenize(inp).collect();
393		assert!(out.is_empty(), "Detokenizing an empty input should yield no bytes");
394	}
395	use super::*;
396}
397
398pub (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)];
399#[derive(Clone,Debug)]
400/// a simple dictionary based detokenizer
401pub struct Detokenization<I:Iterator> where I::Item:Val<u32>{inner:Fuse<I>,maxtokenlen:usize,position:usize,tokenid:u32,tokens:Arc<Vec<Token>>}
402#[derive(Clone,Debug)]
403/// iterator for TokenDict
404pub struct DictIter<'a>{range:Range<usize>,tokens:&'a [Token]}
405#[derive(Clone,Debug)]
406/// intoiterator for TokenDict
407pub struct DictIntoIter{range:Range<usize>,tokens:Arc<Vec<Token>>}
408#[derive(Clone,Debug)]
409/// 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. Note that although indexing or iterating over the TokenDict itself will return tokens whose ids match their indices, the 256 single byte tokens are implicit, so the indices of the slice returned by as_ref are offset by -256 from the token ids.
410pub struct TokenDict{ids:Arc<[Trie<u8,u32>;256]>,maxtokenlen:usize,tokens:Arc<Vec<Token>>}
411#[derive(Clone,Debug)]
412/// a simple dictionary based tokenizer iterator
413pub struct Tokenization<I:Iterator> where I::Item:Val<u8>{ids:Arc<[Trie<u8,u32>;256]>,inner:Fuse<I>,state:VecDeque<u8>}
414
415use crate::{Token,UTF8CharIter,Val,token::SINGLE_BYTES};
416use post_inc;
417use ptrie::Trie;
418#[cfg(feature="serial")]
419use serde::{Deserialize,Deserializer,Serialize,Serializer};
420#[cfg(feature="serial")]
421use serde_bytes::{Bytes,ByteBuf};
422use std::{
423	collections::{HashMap,VecDeque},cmp::{Eq,PartialEq},iter::{Extend,Fuse},ops::{Index,Range},slice::Iter as SliceIter,sync::Arc,vec::IntoIter as VecIntoIter,
424};
token_dict/dict.rs

token_dict/
dict.rs
