static O loadVariableDefinition(S varName) {

  ret loadVariableDefinition(getProgramID(), varName);

}

// currently works with string lists ("= litlist(...)"),

// strings, longs and ints.

static O loadVariableDefinition(S progIDOrSrc, S varName) {

  if (isSnippetID(progIDOrSrc))

    progIDOrSrc = loadSnippet(progIDOrSrc);

  ret loadVariableDefinition(progIDOrSrc, javaTok(progIDOrSrc), varName);

}

static O loadVariableDefinition(S src, L<S> tok, S varName) {

  int i = findCodeTokens(tok, varName, "=");

  if (i < 0) ret null;

  i += 4;

  S t = tok.get(i);

  if (isQuoted(t))

    ret unquote(t);

  if (isLongConstant(t))

    ret parseLong(t);

  if (isInteger(t))

    ret parseInt(t);

  if (eqOneOf(t, "litlist", "ll") && eq(get(tok, i+2), "(")) {

    int opening = i+2;

    int closing = findEndOfBracketPart(tok, opening)-1;

    new L l;

    for (i = opening+2; i < closing; i += 4)

      l.add(unquote(tok.get(i)));

    ret l;

  }

  throw fail("Unknown variable type or no definition in source: " + shorten(src, 100) + "/" + varName);

}