boolean (PsiBuilder b, int l) { if (!recursion_guard_(b, l, "nz")) return false; if (!nextTokenIs(b, DIGIT)) return false; boolean r; Marker m = enter_section_(b); r = nz_0(b, l + 1); r = r && consumeToken(b, DIGIT); exit_section_(b, m, NZ, r); return r; }