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< > BotCompany Repo | #1016767 // tok_listComprehensions

JavaX fragment (include)

static void tok_listComprehensions(L<S> tok) {
  if (!tok.contains("[")) ret;
  for (int i = 1; i < l(tok); i += 2) try {
    continue unless eq(tok.get(i), "[");
    int iOp = indexOfAny(tok, i+2, "?", ":", "in", "[", "]");
    if (iOp < 0) ret;
    if (!eqOneOf(tok.get(iOp), ":", "in")) continue; // not a list comprehension
    if (eqGet(tok, iOp+2, ".")) continue; // "in." (in is a variable name)
    
    Map<Int> bracketMap = getBracketMap(tok); // XXX - optimize
    
    S type = joinSubList(tok, i+2, iOp-3), id = tok.get(iOp-2);
    int j = scanOverExpression(tok, bracketMap, iOp+2, "|");
    S exp = join(subList(tok, iOp+2, j));
    j += 2;
    int k = scanOverExpression(tok, bracketMap, j, "]");
    S where = join(subList(tok, j, k));
    ++k;
      
    S code = "filter(" + exp + ", func(" + type + " " + id + ") -> Bool { " + where + " })";
    replaceTokens(tok, i, k, code);
    reTok(tok, i, k);
  } on fail {
    print("Was processing list comprehension: " + joinSubList(tok, i, i+30) + "...");
  }
}

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Snippet ID: #1016767
Snippet name: tok_listComprehensions
Eternal ID of this version: #1016767/6
Text MD5: b9be9113c399ac181e57082071f19b97
Author: stefan
Category: javax / transpiling
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2021-07-24 03:03:59
Source code size: 1054 bytes / 26 lines
Pitched / IR pitched: No / No
Views / Downloads: 334 / 368
Version history: 5 change(s)
Referenced in: [show references]