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sS tok_moveImportsUp(S src) {
ret join(tok_moveImportsUp(javaTok(src)));
}
static LS tok_moveImportsUp(LS tok) {
new StringBuilder buf;
//print("tok_moveImportsUp n=" + l(tok));
//print("Source begins: " + quote(shorten(join(tok), 200)));
// scan imports on top
bool change = false;
int i;
new Set have;
for (i = 1; i < l(tok); i += 2)
if (eq(tok.get(i), 'import)) {
int j = indexOf(tok, i+2, ";");
if (j < 0) break;
S s = joinSubList(tok, i, j+1);
have.add(s);
i = j;
} else break;
//print("tok_moveImportsUp have " + l(have) + " after " + i);
// scan imports in text
for (; i < l(tok); i += 2)
if (eq(tok.get(i), 'import)) {
int j = indexOf(tok, i+2, ";");
if (j < 0) continue; // huh?
S s = joinSubList(tok, i, j+1);
//print("Found import at " + i + ": " + s);
if (!have.contains(s)) {
buf.append(s).append("\n");
have.add(s);
}
replaceTokens/*_reTok*/(tok, i, j+1, "");
change = true;
i -= 2;
}
if (nempty(buf)) {
if (l(tok) == 1) addAll(tok, "", "");
tok.set(1, str(buf)+"\n"+tok.get(1));
change = true;
//reTok(tok, 1, 2);
}
if (change) reTok(tok);
ret tok;
}