web_matchTriple_dollarVars - does not handle repeating vars (a == c == "$X") [1011891]

static Pair<WebNode> web_matchTriple_dollarVars(Symbol a, Symbol b, Symbol c, Web web) {
  L<WebNode> nodes = web_nodes(web);
  if (l(nodes) == 1) {
    // check self-relation
    WebNode n = first(nodes);
    if (nodeMatch_dollarVars(b, web_getRelationOpt(n, n)) == 0
      && nodeMatch_dollarVars(a, n) == 0
      && nodeMatch_dollarVars(c, n) == 0)
      ret pair(n);
  } else if (l(nodes) == 2) {
    WebNode n1 = first(nodes), n2 = second(nodes);
    if (nodeMatch_dollarVars(b, web_getRelationOpt(n1, n2)) == 0
      && nodeMatch_dollarVars(a, n1) == 0
      && nodeMatch_dollarVars(c, n2) == 0)
      ret pair(n1, n2);
    if (nodeMatch_dollarVars(b, web_getRelationOpt(n2, n1)) == 0
      && nodeMatch_dollarVars(a, n2) == 0
      && nodeMatch_dollarVars(c, n1) == 0)
      ret pair(n2, n1);
  }
  null;
}

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Snippet ID:	#1011891
Snippet name:	web_matchTriple_dollarVars - does not handle repeating vars (a == c == "$X")
Eternal ID of this version:	#1011891/9
Text MD5:	669182682e72de1917ba35cab0eef78a
Author:	stefan
Category:	javax / a.i.
Type:	JavaX fragment (include)
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2017-12-10 07:06:47
Source code size:	834 bytes / 22 lines
Pitched / IR pitched:	No / No
Views / Downloads:	492 / 519
Version history:	8 change(s)
Referenced in:	#1006654 - Standard functions list 2 (LIVE, continuation of #761)

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JavaX fragment (include)

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