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< > BotCompany Repo | #1005488 // Develop "unrollOptions"

JavaX source code [tags: use-pretranspiled] - run with: x30.jar

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!752
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concepts.
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concept Yo {
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  new Ref a;
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  *() {}
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  *(Concept c) { a.set(c); }
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}
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concept YoYo {
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  new Ref a;
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  new Ref b;
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  *() {}
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  *(Concept a, Concept b) { this.a.set(a); this.b.set(b); }
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}
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p {
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  Concept a = new Yo, b = cstr("yo");
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  check(ll(a), a);
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  check(ll(), new Options);
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  check(ll(a), new Options(a));
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  check(ll(a, b), new Options(a, b));
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  check(ll(), new Yo(new Options()));
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  check(ll(new Yo(a)), new Yo(new Options(a)));
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  check(ll(new Yo(a)), new Yo(new Options(new Options(a))));
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  check(ll(new YoYo(a, b)), new YoYo(a, b));
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  check(ll(new YoYo(a, b), new YoYo(b, b)),
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    new YoYo(new Options(a, b), b));
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  check(ll(new YoYo(a, b), new YoYo(a, a)),
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    new YoYo(a, new Options(b, a)));
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  check(ll(new YoYo(a, b), new YoYo(a, a), new YoYo(b, b), new YoYo(b, a)),
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    new YoYo(new Options(a, b), new Options(b, a)));
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}
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static L<Concept> unrollOptions(Concept c) {
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  if (c << Options)
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    ret concatMap("unrollOptions", c/Options);
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  if (!conceptHasOptions(c))
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    ret ll(c);
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  else { // c has Options hidden somewhere within - recurse & "multiply"
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    new Map<S, O> simples;
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    Map<S, L<Concept>> multiples = new TreeMap;
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    for (S field : conceptFields(c)) {
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      O val = cget(c, field);
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      if (!val << Concept)
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        simples.put(field, val);
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      else {
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        L<Concept> l = unrollOptions(val/Concept);
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        if (empty(l)) ret ll();
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        else if (l(l) == 1)
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          simples.put(field, first(l));
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        else
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          multiples.put(field, l);
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      }
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    }
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    final Concept d = unlisted(c.getClass());
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    csetMap(d, simples);
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    if (empty(multiples))
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      ret ll(d);
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    else {
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      if (l(multiples) > 2) warn("todo johnny");
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      new L out;
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      L<S> fields = asList(keys(multiples));
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      S field0 = fields.get(0);
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      for (Concept value0 : multiples.get(field0)) {
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        Concept e = unlisted(c.getClass());
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        copyConceptFields(d, e);
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        cset(e, field0, value0);
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        if (l(multiples) == 1) out.add(e); else {
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          S field1 = fields.get(1);
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          for (Concept value1 : multiples.get(field1)) {
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            Concept f = unlisted(c.getClass());
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            copyConceptFields(e, f);
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            cset(f, field1, value1);
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            out.add(f);
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          }
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        }
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      }
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      ret out;
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    }
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  }
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}
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svoid check(L l, Concept in) {
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  L<Concept> l2 = unrollOptions(in);
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  /*assertEquals(l(l), l(l2));
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  for i over l:
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    assertEquals(conceptStructure((Concept) l.get(i)), conceptStructure(l2.get(i)));
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  print("ok");*/
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  assertEqualsVerbose(conceptStructure(unlistedConceptL(l)), conceptStructure(unlistedConceptL(l2)));
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}

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Snippet ID: #1005488
Snippet name: Develop "unrollOptions"
Eternal ID of this version: #1005488/1
Text MD5: dde6ce0fb8b02a11ee85497df0045341
Transpilation MD5: ec2d3423d090a64d06601ce8116682d9
Author: stefan
Category: javax / a.i.
Type: JavaX source code
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2016-11-23 14:50:33
Source code size: 2740 bytes / 102 lines
Pitched / IR pitched: No / No
Views / Downloads: 579 / 659
Referenced in: [show references]