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1 | sclass CCI_Choice extends CharacterClassIterator {
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2 | bool canEndHere; |
3 | |
4 | // can be a HashMap or TreeMap (e.g. with special comparator) |
5 | Map<Char, CharacterClassIterator> map; |
6 | |
7 | // computed on demand |
8 | CharRange acceptedCharRange; |
9 | |
10 | *() {}
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11 | *(bool canEndHere, Map<Char, CharacterClassIterator> *map) {}
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12 | |
13 | CharacterClassIterator acceptChar(char c) {
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14 | ret assertNotNull(map.get(c)); |
15 | } |
16 | |
17 | bool canEndHere() {
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18 | ret canEndHere; |
19 | } |
20 | |
21 | bool canAcceptChar(char c) {
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22 | ret map.containsKey(c); |
23 | } |
24 | |
25 | Cl<Char> acceptedChars() { ret keys(map); }
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26 | |
27 | CharRange acceptedCharRange() {
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28 | if (empty(map)) null; |
29 | if (acceptedCharRange == null) |
30 | acceptedCharRange = calcAcceptedCharRange(); |
31 | ret acceptedCharRange; |
32 | } |
33 | |
34 | CharRange calcAcceptedCharRange() {
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35 | if (map instanceof TreeMap) {
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36 | ret CharRange(firstKey(map), lastKey((TreeMap<Char, CharacterClassIterator>) map)); |
37 | } else {
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38 | char min = 0xFFFF, max = 0; |
39 | for (char c : keys(map)) {
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40 | if (c < min) min = c; |
41 | if (c > max) max = c; |
42 | } |
43 | ret CharRange(min, max); |
44 | } |
45 | } |
46 | |
47 | // object is immutable, so no cloning necessary |
48 | CharacterClassIterator cloneCCI() {
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49 | this; |
50 | } |
51 | } |
Began life as a copy of #1029558
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| Snippet ID: | #1029560 |
| Snippet name: | CCI_Choice - CharacterClassIterator branching out depending on next char |
| Eternal ID of this version: | #1029560/8 |
| Text MD5: | 615db8a1e3ff8d1ec0360a260b70bc26 |
| Transpilation MD5: | 9ebd3cb80bd73d149f11fba9599eb1ea |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2020-08-23 12:55:14 |
| Source code size: | 1251 bytes / 51 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 237 / 516 |
| Version history: | 7 change(s) |
| Referenced in: | [show references] |