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1 | // TODO: clean up these type signatures? |
2 | |
3 | static <A, B, C extends Iterator<B>> ItIt<B> nestedIterator(Iterable<A> c, final F1<A, C> makeInnerIterator) {
|
4 | ret nestedIterator(iterator(c), makeInnerIterator); |
5 | } |
6 | |
7 | static <A, B, C extends Iterator<B>> ItIt<B> nestedIterator(Iterable<A> c, IF1<A, C> makeInnerIterator) {
|
8 | ret nestedIterator(iterator(c), makeInnerIterator); |
9 | } |
10 | |
11 | static <A, B, C extends Iterator<B>> ItIt<B> nestedIterator(ItIt<A> c, IF1<A, C> makeInnerIterator) {
|
12 | ret nestedIterator((Iterator<A>) c, makeInnerIterator); |
13 | } |
14 | |
15 | static <A, B, C extends Iterator<B>> ItIt<B> nestedIterator(Iterator<A> it1, IF1<A, C> makeInnerIterator) {
|
16 | if (it1 == null || !it1.hasNext()) ret emptyItIt(); |
17 | ret iff(new F0 {
|
18 | A a; |
19 | Iterator<B> innerIterator; |
20 | |
21 | { nextOuter(); }
|
22 | |
23 | void nextOuter {
|
24 | a = it1.next(); |
25 | innerIterator = makeInnerIterator.get(a); |
26 | } |
27 | |
28 | public O get() {
|
29 | while true { ping();
|
30 | if (innerIterator != null && innerIterator.hasNext()) |
31 | ret innerIterator.next(); |
32 | if (!it1.hasNext()) ret endMarker(); |
33 | nextOuter(); |
34 | } |
35 | } |
36 | }); |
37 | } |
38 | |
39 | static <A, B, C extends Iterator<B>> ItIt<B> nestedIterator(final Iterator<A> it1, F1<A, C> makeInnerIterator) {
|
40 | if (it1 == null || !it1.hasNext()) ret emptyItIt(); |
41 | ret iff(new F0 {
|
42 | A a; |
43 | Iterator<B> innerIterator; |
44 | |
45 | { nextOuter(); }
|
46 | |
47 | void nextOuter {
|
48 | a = it1.next(); |
49 | innerIterator = makeInnerIterator.get(a); |
50 | } |
51 | |
52 | public O get() {
|
53 | while true { ping();
|
54 | if (innerIterator != null && innerIterator.hasNext()) |
55 | ret innerIterator.next(); |
56 | if (!it1.hasNext()) ret endMarker(); |
57 | nextOuter(); |
58 | } |
59 | } |
60 | }); |
61 | } |
62 | |
63 | static <A, B, C extends Iterator<B>> ItIt<B> lambdaMapLike nestedIterator(IF1<A, C> makeInnerIterator, Iterator<A> it1) {
|
64 | ret nestedIterator(it1, makeInnerIterator); |
65 | } |
66 | |
67 | static <A, B, C extends Iterator<B>> ItIt<B> nestedIterator(IF1<A, C> makeInnerIterator, Cl<A> l) {
|
68 | ret nestedIterator(l, makeInnerIterator); |
69 | } |
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| Snippet ID: | #1018135 |
| Snippet name: | nestedIterator |
| Eternal ID of this version: | #1018135/20 |
| Text MD5: | df1a47e18008bb60fb1515cf722c3408 |
| Transpilation MD5: | 8dc5e6d8e4ece820a7411f40c81fad87 |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2022-03-30 01:29:22 |
| Source code size: | 2103 bytes / 69 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 535 / 741 |
| Version history: | 19 change(s) |
| Referenced in: | [show references] |