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Code Issues Releases Activity

Replaced assertions with exceptions for invalid input in RNG

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This commit is contained in:
Ivan Savenko
2024-02-19 00:35:21 +02:00
parent 868b41c8ee
commit 10b35ceecb
2 changed files with 16 additions and 12 deletions
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8
include/vstd/RNG.h
View File

@@ -36,14 +36,18 @@ namespace RandomGeneratorUtil
template<typename Container>
auto nextItem(const Container & container, vstd::RNG & rand) -> decltype(std::begin(container))
{
assert(!container.empty());
if(container.empty())
throw std::runtime_error("Unable to select random item from empty container!");
return std::next(container.begin(), rand.getInt64Range(0, container.size() - 1)());
}
template<typename Container>
auto nextItem(Container & container, vstd::RNG & rand) -> decltype(std::begin(container))
{
assert(!container.empty());
if(container.empty())
throw std::runtime_error("Unable to select random item from empty container!");
return std::next(container.begin(), rand.getInt64Range(0, container.size() - 1)());
}

20
lib/CRandomGenerator.cpp
View File

@@ -37,25 +37,25 @@ void CRandomGenerator::resetSeed()
TRandI CRandomGenerator::getIntRange(int lower, int upper)
{
assert(lower <= upper);
return std::bind(TIntDist(lower, upper), std::ref(rand));
if (lower <= upper)
return std::bind(TIntDist(lower, upper), std::ref(rand));
throw std::runtime_error("Invalid range provided: " + std::to_string(lower) + " ... " + std::to_string(upper));
}
vstd::TRandI64 CRandomGenerator::getInt64Range(int64_t lower, int64_t upper)
{
assert(lower <= upper);
return std::bind(TInt64Dist(lower, upper), std::ref(rand));
if(lower <= upper)
return std::bind(TInt64Dist(lower, upper), std::ref(rand));
throw std::runtime_error("Invalid range provided: " + std::to_string(lower) + " ... " + std::to_string(upper));
}
int CRandomGenerator::nextInt(int upper)
{
assert(0 <= upper);
return getIntRange(0, upper)();
}
int CRandomGenerator::nextInt(int lower, int upper)
{
assert(lower <= upper);
return getIntRange(lower, upper)();
}
@@ -66,19 +66,19 @@ int CRandomGenerator::nextInt()
vstd::TRand CRandomGenerator::getDoubleRange(double lower, double upper)
{
assert(lower <= upper);
return std::bind(TRealDist(lower, upper), std::ref(rand));
if(lower <= upper)
return std::bind(TRealDist(lower, upper), std::ref(rand));
throw std::runtime_error("Invalid range provided: " + std::to_string(lower) + " ... " + std::to_string(upper));
}
double CRandomGenerator::nextDouble(double upper)
{
assert(0 <= upper);
return getDoubleRange(0, upper)();
}
double CRandomGenerator::nextDouble(double lower, double upper)
{
assert(lower <= upper);
return getDoubleRange(lower, upper)();
}