3 /// A representation of byte oriented equivalence classes.
12     /// Creates a new set of equivalence classes where all bytes are mapped to
18     /// Creates a new set of equivalence classes where each byte belongs to
21         let mut classes = ByteClasses::empty();  in singletons()  localVariable
23             classes.set(i as u8, i as u8);  in singletons()
25         classes  in singletons()
28     /// Copies the byte classes given. The given slice must have length 0 or
37             let mut classes = ByteClasses::empty();  in from_slice()  localVariable
39                 classes.set(b as u8, class);  in from_slice()
41             classes  in from_slice()
65     /// these equivalence classes. Equivalently, this returns the total number
66     /// of equivalence classes.
73     /// equivalence class. Equivalently, there are 256 equivalence classes
82     /// equivalent to the number of equivalence classes. Each item is an
86     /// hasn't been converted to equivalence classes yet. Picking an arbitrary
91         ByteClassRepresentatives { classes: self, byte: 0, last_class: None }  in representatives()
129     classes: &'a ByteClasses,  field
141             let class = self.classes.get(byte);  in next()
153 /// A byte class set keeps track of an *approximation* of equivalence classes
163 /// classes. For example, in the regex `[ac]+`, both `a` and `c` are in the
166 /// implementation, `a` and `c` are put into distinct equivalence classes.
168 /// endeavor to compute the minimal equivalence classes since they can have a
179 /// the true minimal set of equivalence classes.
186     /// Create a new set of byte classes where all bytes are part of the same
206         let mut classes = ByteClasses::empty();  in byte_classes()  localVariable
210             classes.set(i as u8, class as u8);  in byte_classes()
219         classes  in byte_classes()
233         let classes = set.byte_classes();  in byte_classes()  localVariable
234         assert_eq!(classes.get(0), 0);  in byte_classes()
235         assert_eq!(classes.get(1), 0);  in byte_classes()
236         assert_eq!(classes.get(2), 0);  in byte_classes()
237         assert_eq!(classes.get(b'a' - 1), 0);  in byte_classes()
238         assert_eq!(classes.get(b'a'), 1);  in byte_classes()
239         assert_eq!(classes.get(b'm'), 1);  in byte_classes()
240         assert_eq!(classes.get(b'z'), 1);  in byte_classes()
241         assert_eq!(classes.get(b'z' + 1), 2);  in byte_classes()
242         assert_eq!(classes.get(254), 2);  in byte_classes()
243         assert_eq!(classes.get(255), 2);  in byte_classes()
248         let classes = set.byte_classes();  in byte_classes()  localVariable
249         assert_eq!(classes.get(0), 0);  in byte_classes()
250         assert_eq!(classes.get(1), 0);  in byte_classes()
251         assert_eq!(classes.get(2), 0);  in byte_classes()
252         assert_eq!(classes.get(3), 1);  in byte_classes()
253         assert_eq!(classes.get(4), 2);  in byte_classes()
254         assert_eq!(classes.get(5), 2);  in byte_classes()
255         assert_eq!(classes.get(6), 2);  in byte_classes()
256         assert_eq!(classes.get(7), 3);  in byte_classes()
257         assert_eq!(classes.get(255), 3);  in byte_classes()