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[C++] Update to address comparator failure in big endian #7681

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Dec 6, 2022
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16 changes: 8 additions & 8 deletions tests/key_field/key_field_sample_generated.h
Original file line number Diff line number Diff line change
Expand Up @@ -67,11 +67,11 @@ FLATBUFFERS_MANUALLY_ALIGNED_STRUCT(1) Baz FLATBUFFERS_FINAL_CLASS {
bool KeyCompareLessThan(const Baz * const o) const {
return KeyCompareWithValue(o->a()) < 0;
}
int KeyCompareWithValue(const flatbuffers::Array<uint8_t, 4> *_a) const {
int KeyCompareWithValue(const flatbuffers::Array<uint8_t, 4> *_a) const {
for (auto i = 0; i < a()->size(); i++) {
const auto a_l = a_[i];
const auto a_r = _a->Get(i);
if(a_l != a_r)
const auto a_l = flatbuffers::EndianScalar(a_[i]);
const auto a_r = flatbuffers::EndianScalar(_a->Get(i));
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if(a_l != a_r)
return static_cast<int>(a_l > a_r) - static_cast<int>(a_l < a_r);
}
return 0;
Expand Down Expand Up @@ -139,11 +139,11 @@ FLATBUFFERS_MANUALLY_ALIGNED_STRUCT(4) Bar FLATBUFFERS_FINAL_CLASS {
bool KeyCompareLessThan(const Bar * const o) const {
return KeyCompareWithValue(o->a()) < 0;
}
int KeyCompareWithValue(const flatbuffers::Array<float, 3> *_a) const {
int KeyCompareWithValue(const flatbuffers::Array<float, 3> *_a) const {
for (auto i = 0; i < a()->size(); i++) {
const auto a_l = a_[i];
const auto a_r = _a->Get(i);
if(a_l != a_r)
const auto a_l = flatbuffers::EndianScalar(a_[i]);
const auto a_r = flatbuffers::EndianScalar(_a->Get(i));
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if(a_l != a_r)
return static_cast<int>(a_l > a_r) - static_cast<int>(a_l < a_r);
}
return 0;
Expand Down
31 changes: 21 additions & 10 deletions tests/key_field_test.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,9 @@ void FixedSizedScalarKeyInStructTest() {
bazs.push_back(Baz(flatbuffers::make_span(test_array3), 2));
bazs.push_back(Baz(flatbuffers::make_span(test_array4), 3));
auto baz_vec = fbb.CreateVectorOfSortedStructs(&bazs);

auto test_string = fbb.CreateString("TEST");

float test_float_array1[3] = { 1.5, 2.5, 0 };
float test_float_array2[3] = { 7.5, 2.5, 0 };
float test_float_array3[3] = { 1.5, 2.5, -1 };
Expand All @@ -36,6 +38,7 @@ void FixedSizedScalarKeyInStructTest() {
bars.push_back(Bar(flatbuffers::make_span(test_float_array4), 1));
auto bar_vec = fbb.CreateVectorOfSortedStructs(&bars);


auto t = CreateFooTable(fbb, 1, 2, test_string, baz_vec, bar_vec);
fbb.Finish(t);

Expand All @@ -45,26 +48,34 @@ void FixedSizedScalarKeyInStructTest() {
auto sorted_baz_vec = foo_table->d();
TEST_EQ(sorted_baz_vec->Get(0)->b(), 1);
TEST_EQ(sorted_baz_vec->Get(3)->b(), 4);

uint8_t test_array[4];
auto key_array = &flatbuffers::CastToArray(test_array);
key_array->CopyFromSpan(flatbuffers::make_span(test_array1));


TEST_NOTNULL(
sorted_baz_vec->LookupByKey(&flatbuffers::CastToArray(test_array1)));
sorted_baz_vec->LookupByKey(key_array));
TEST_EQ(
sorted_baz_vec->LookupByKey(&flatbuffers::CastToArray(test_array1))->b(),
sorted_baz_vec->LookupByKey(key_array)->b(),
4);
uint8_t array_int[4] = { 7, 2, 3, 0 };
TEST_EQ(sorted_baz_vec->LookupByKey(&flatbuffers::CastToArray(array_int)),
key_array->CopyFromSpan(flatbuffers::make_span(array_int));
TEST_EQ(sorted_baz_vec->LookupByKey(key_array),
static_cast<const Baz *>(nullptr));

auto sorted_bar_vec = foo_table->e();
TEST_EQ(sorted_bar_vec->Get(0)->b(), 1);
TEST_EQ(sorted_bar_vec->Get(3)->b(), 4);
TEST_NOTNULL(sorted_bar_vec->LookupByKey(
&flatbuffers::CastToArray(test_float_array1)));
TEST_EQ(
sorted_bar_vec->LookupByKey(&flatbuffers::CastToArray(test_float_array1))
->b(),
3);

float test_float_array[3];
auto key_float_array = &flatbuffers::CastToArray(test_float_array);
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key_float_array->CopyFromSpan(flatbuffers::make_span(test_float_array1));
TEST_NOTNULL(sorted_bar_vec->LookupByKey(key_float_array));
TEST_EQ(sorted_bar_vec->LookupByKey(key_float_array)->b(), 3);
float array_float[3] = { -1, -2, -3 };
TEST_EQ(sorted_bar_vec->LookupByKey(&flatbuffers::CastToArray(array_float)),
key_float_array->CopyFromSpan(flatbuffers::make_span(array_float));
TEST_EQ(sorted_bar_vec->LookupByKey(key_float_array),
static_cast<const Bar *>(nullptr));
}

Expand Down