| 1 | #ifndef MYCPP_COMPARATORS_H
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| 2 | #define MYCPP_COMPARATORS_H
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| 3 |
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| 4 | #include <string.h> // memcmp
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| 5 |
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| 6 | #include <algorithm> // std::min()
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| 7 |
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| 8 | #include "mycpp/gc_str.h" // len()
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| 9 |
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| 10 | template <typename L, typename R>
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| 11 | class Tuple2;
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| 12 |
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| 13 | bool str_equals(BigStr* left, BigStr* right);
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| 14 | bool maybe_str_equals(BigStr* left, BigStr* right);
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| 15 |
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| 16 | bool are_equal(BigStr* left, BigStr* right);
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| 17 |
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| 18 | bool are_equal(BigStr* left, BigStr* right);
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| 19 | bool are_equal(int left, int right);
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| 20 | bool are_equal(Tuple2<BigStr*, int>* t1, Tuple2<BigStr*, int>* t2);
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| 21 | bool are_equal(Tuple2<int, int>* t1, Tuple2<int, int>* t2);
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| 22 |
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| 23 | bool keys_equal(int left, int right);
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| 24 | bool keys_equal(BigStr* left, BigStr* right);
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| 25 | bool keys_equal(Tuple2<int, int>* t1, Tuple2<int, int>* t2);
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| 26 | bool keys_equal(Tuple2<BigStr*, int>* t1, Tuple2<BigStr*, int>* t2);
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| 27 |
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| 28 | namespace id_kind_asdl {
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| 29 | enum class Kind;
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| 30 | };
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| 31 |
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| 32 | bool are_equal(id_kind_asdl::Kind left, id_kind_asdl::Kind right);
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| 33 |
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| 34 | inline int int_cmp(int a, int b) {
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| 35 | if (a == b) {
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| 36 | return 0;
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| 37 | }
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| 38 | return a < b ? -1 : 1;
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| 39 | }
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| 40 |
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| 41 | // mylib::str_cmp is in this common header to avoid gc_list.h -> gc_mylib.h
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| 42 | // dependency
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| 43 | //
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| 44 | // It's also used for _cmp(BigStr*) in gc_list.
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| 45 | namespace mylib {
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| 46 |
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| 47 | // Used by [[ a > b ]] and so forth
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| 48 | inline int str_cmp(BigStr* a, BigStr* b) {
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| 49 | int len_a = len(a);
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| 50 | int len_b = len(b);
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| 51 |
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| 52 | int min = std::min(len_a, len_b);
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| 53 | if (min == 0) {
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| 54 | return int_cmp(len_a, len_b);
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| 55 | }
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| 56 | int comp = memcmp(a->data_, b->data_, min);
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| 57 | if (comp == 0) {
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| 58 | return int_cmp(len_a, len_b); // tiebreaker
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| 59 | }
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| 60 | return comp;
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| 61 | }
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| 62 |
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| 63 | } // namespace mylib
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| 64 |
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| 65 | #endif // MYCPP_COMPARATORS_H
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