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#include <library/cpp/regex/hyperscan/hyperscan.h>
#include <library/cpp/testing/unittest/registar.h>
#include <util/generic/set.h>
#include <array>
#include <algorithm>
Y_UNIT_TEST_SUITE(HyperscanWrappers) {
using namespace NHyperscan;
using namespace NHyperscan::NPrivate;
Y_UNIT_TEST(CompileAndScan) {
TDatabase db = Compile("a.c", HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH);
TScratch scratch = MakeScratch(db);
unsigned int foundId = 42;
auto callback = [&](unsigned int id, unsigned long long /* from */, unsigned long long /* to */) {
foundId = id;
};
NHyperscan::Scan(
db,
scratch,
"abc",
callback);
UNIT_ASSERT_EQUAL(foundId, 0);
}
Y_UNIT_TEST(Matches) {
NHyperscan::TDatabase db = NHyperscan::Compile(
"a.c",
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH);
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db);
UNIT_ASSERT(NHyperscan::Matches(db, scratch, "abc"));
UNIT_ASSERT(!NHyperscan::Matches(db, scratch, "foo"));
}
Y_UNIT_TEST(Multi) {
NHyperscan::TDatabase db = NHyperscan::CompileMulti(
{
"foo",
"bar",
},
{
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH,
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH | HS_FLAG_CASELESS,
},
{
42,
241,
});
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db);
UNIT_ASSERT(NHyperscan::Matches(db, scratch, "foo"));
UNIT_ASSERT(NHyperscan::Matches(db, scratch, "bar"));
UNIT_ASSERT(NHyperscan::Matches(db, scratch, "BAR"));
UNIT_ASSERT(!NHyperscan::Matches(db, scratch, "FOO"));
TSet<unsigned int> foundIds;
auto callback = [&](unsigned int id, unsigned long long /* from */, unsigned long long /* to */) {
foundIds.insert(id);
};
NHyperscan::Scan(
db,
scratch,
"fooBaR",
callback);
UNIT_ASSERT_EQUAL(foundIds.size(), 2);
UNIT_ASSERT(foundIds.contains(42));
UNIT_ASSERT(foundIds.contains(241));
}
// https://ml.yandex-team.ru/thread/2370000002965712422/
Y_UNIT_TEST(MultiRegression) {
NHyperscan::CompileMulti(
{
"aa.bb/cc.dd",
},
{
HS_FLAG_UTF8,
},
{
0,
});
}
Y_UNIT_TEST(Serialize) {
NHyperscan::TDatabase db = NHyperscan::Compile(
"foo",
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH);
TString serialization = Serialize(db);
db.Reset();
TDatabase db2 = Deserialize(serialization);
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db2);
UNIT_ASSERT(NHyperscan::Matches(db2, scratch, "foo"));
UNIT_ASSERT(!NHyperscan::Matches(db2, scratch, "FOO"));
}
Y_UNIT_TEST(GrowScratch) {
NHyperscan::TDatabase db1 = NHyperscan::Compile(
"foo",
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH);
NHyperscan::TDatabase db2 = NHyperscan::Compile(
"longer\\w\\w\\wpattern",
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH | HS_FLAG_UTF8);
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db1);
NHyperscan::GrowScratch(scratch, db2);
UNIT_ASSERT(NHyperscan::Matches(db1, scratch, "foo"));
UNIT_ASSERT(NHyperscan::Matches(db2, scratch, "longerWWWpattern"));
}
Y_UNIT_TEST(CloneScratch) {
NHyperscan::TDatabase db = NHyperscan::Compile(
"foo",
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH);
NHyperscan::TScratch scratch1 = NHyperscan::MakeScratch(db);
NHyperscan::TScratch scratch2 = NHyperscan::CloneScratch(scratch1);
scratch1.Reset();
UNIT_ASSERT(NHyperscan::Matches(db, scratch2, "foo"));
}
class TSimpleSingleRegex {
public:
static TDatabase Compile(TCPUFeatures cpuFeatures) {
return NHyperscan::Compile("foo", HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH, cpuFeatures);
}
static void Check(const TDatabase& db, const NHyperscan::NPrivate::TImpl& impl) {
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db);
UNIT_ASSERT(NHyperscan::NPrivate::Matches(db, scratch, "foo", impl));
UNIT_ASSERT(!NHyperscan::NPrivate::Matches(db, scratch, "FOO", impl));
}
};
// This regex uses AVX2 instructions on long (>70) texts.
// It crushes when compiled for machine with AVX2 and run on machine without it.
class TAvx2SingleRegex {
public:
static TDatabase Compile(TCPUFeatures cpuFeatures) {
auto regex = "[ЁАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюяё]+"
"[.][\\-ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz]{2,5}";
unsigned int flags = HS_FLAG_UTF8 | HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH | HS_FLAG_ALLOWEMPTY;
return NHyperscan::Compile(regex, flags, cpuFeatures);
}
static void Check(const TDatabase& db, const NHyperscan::NPrivate::TImpl& impl) {
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db);
UNIT_ASSERT(NHyperscan::NPrivate::Matches(
db,
scratch,
"_________________________________________________________________"
"фу.bar"
"_________________________________________________________________",
impl));
UNIT_ASSERT(!NHyperscan::NPrivate::Matches(
db,
scratch,
"_________________________________________________________________"
"фу"
"_________________________________________________________________",
impl));
}
};
class TSimpleMultiRegex {
public:
static TDatabase Compile(TCPUFeatures cpuFeatures) {
return NHyperscan::CompileMulti(
{
"foo",
"bar",
},
{
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH,
HS_FLAG_DOTALL | HS_FLAG_SINGLEMATCH | HS_FLAG_CASELESS,
},
{
42,
241,
},
cpuFeatures);
}
static void Check(const TDatabase& db, const NHyperscan::NPrivate::TImpl& impl) {
NHyperscan::TScratch scratch = NHyperscan::MakeScratch(db);
UNIT_ASSERT(NHyperscan::NPrivate::Matches(db, scratch, "foo", impl));
UNIT_ASSERT(NHyperscan::NPrivate::Matches(db, scratch, "bar", impl));
UNIT_ASSERT(NHyperscan::NPrivate::Matches(db, scratch, "BAR", impl));
UNIT_ASSERT(!NHyperscan::NPrivate::Matches(db, scratch, "FOO", impl));
TSet<unsigned int> foundIds;
auto callback = [&](unsigned int id, unsigned long long /* from */, unsigned long long /* to */) {
foundIds.insert(id);
};
NHyperscan::NPrivate::Scan(
db,
scratch,
"fooBaR",
callback,
impl);
UNIT_ASSERT_EQUAL(foundIds.size(), 2);
UNIT_ASSERT(foundIds.contains(42));
UNIT_ASSERT(foundIds.contains(241));
}
};
template <class Regex>
void TestCrossPlatformCompile() {
const std::array<ERuntime, 4> runtimes = {
ERuntime::Core2,
ERuntime::Corei7,
ERuntime::AVX2,
ERuntime::AVX512
};
// Unfortunately, we cannot emulate runtimes with more capabilities than current machine.
auto currentRuntimeIter = std::find(runtimes.cbegin(), runtimes.cend(), DetectCurrentRuntime());
Y_ASSERT(currentRuntimeIter != runtimes.cend());
for (auto targetRuntime = runtimes.cbegin(); targetRuntime <= currentRuntimeIter; ++targetRuntime) {
auto db = Regex::Compile(RuntimeCpuFeatures(*targetRuntime));
Regex::Check(db, NHyperscan::NPrivate::TImpl{*targetRuntime});
}
}
Y_UNIT_TEST(CrossPlatformCompile) {
TestCrossPlatformCompile<TSimpleSingleRegex>();
TestCrossPlatformCompile<TAvx2SingleRegex>();
TestCrossPlatformCompile<TSimpleMultiRegex>();
}
}
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