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Cleanup: move things around

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Martin Hořeňovský 2019-02-23 17:16:28 +01:00
parent 165de9b072
commit 288387fa10
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3 changed files with 54 additions and 51 deletions
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13
docs/generators.md
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@ -33,10 +33,9 @@ Catch2's provided generator functionality consists of three parts,
* `GENERATE` macro, that serves to integrate generator expression with
a test case,
* 3 fundamental generators
* 2 fundamental generators
* `ValueGenerator<T>` -- contains only single element
* `ValuesGenerator<T>` -- contains multiple elements
* `RangeGenerator<T>` -- generates all values between `start` and `end`
* 4 generic generators that modify other generators
* `FilterGenerator<T, Predicate>` -- filters out elements from a generator
for which the predicate returns "false"
@ -44,23 +43,25 @@ a test case,
* `RepeatGenerator<T>` -- repeats output from a generator `n` times
* `MapGenerator<T, U, Func>` -- returns the result of applying `Func`
on elements from a different generator
* 2 specific purpose generators
* 3 specific purpose generators
* `RandomIntegerGenerator<Integral>` -- generates random Integrals from range
* `RandomFloatGenerator<Float>` -- generates random Floats from range
* `RangeGenerator<T>` -- generates all values inside a specific range
The generators also have associated helper functions that infer their
type, making their usage much nicer. These are
* `value(T&&)` for `ValueGenerator<T>`
* `values(std::initializer_list<T>)` for `ValuesGenerator<T>`
* `range(start, end)` for `RangeGenerator<T>` with a step size of `1`
* `range(start, end, step)` for `RangeGenerator<T>` with a custom step size
* `filter(predicate, GeneratorWrapper<T>&&)` for `FilterGenerator<T, Predicate>`
* `take(count, GeneratorWrapper<T>&&)` for `TakeGenerator<T>`
* `repeat(repeats, GeneratorWrapper<T>&&)` for `RepeatGenerator<T>`
* `map(func, GeneratorWrapper<T>&&)` for `MapGenerator<T, T, Func>` (map `T` to `T`)
* `map<T>(func, GeneratorWrapper<U>&&)` for `MapGenerator<T, U, Func>` (map `U` to `T`)
* `range(IntegerOrFloat a, IntegerOrFloat b)` for `RandomIntegerGenerator` or `RandomFloatGenerator`
* `random(IntegerOrFloat a, IntegerOrFloat b)` for `RandomIntegerGenerator` or `RandomFloatGenerator`
* `range(start, end)` for `RangeGenerator<T>` with a step size of `1`
* `range(start, end, step)` for `RangeGenerator<T>` with a custom step size
And can be used as shown in the example below to create a generator
that returns 100 odd random number:

45
include/internal/catch_generators.hpp
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@ -349,51 +349,6 @@ namespace Generators {
);
}
template <typename T>
class RangeGenerator final : public IGenerator<T> {
T m_current;
T m_end;
T m_step;
bool m_positive;
public:
RangeGenerator(T const& start, T const& end, T const& step):
m_current(start),
m_end(end),
m_step(step),
m_positive(m_step > T(0))
{
assert(m_current != m_end && "Range start and end cannot be equal");
assert(m_step != T(0) && "Step size cannot be zero");
assert(((m_positive && m_current <= m_end) || (!m_positive && m_current >= m_end)) && "Step moves away from end");
}
RangeGenerator(T const& start, T const& end):
RangeGenerator(start, end, (start < end) ? T(1) : T(-1))
{}
T const& get() const override {
return m_current;
}
bool next() override {
m_current += m_step;
return (m_positive) ? (m_current < m_end) : (m_current > m_end);
}
};
template <typename T>
GeneratorWrapper<T> range(T const& start, T const& end, T const& step) {
static_assert(std::is_integral<T>::value && !std::is_same<T, bool>::value, "Type must be an integer");
return GeneratorWrapper<T>(pf::make_unique<RangeGenerator<T>>(start, end, step));
}
template <typename T>
GeneratorWrapper<T> range(T const& start, T const& end) {
static_assert(std::is_integral<T>::value && !std::is_same<T, bool>::value, "Type must be an integer");
return GeneratorWrapper<T>(pf::make_unique<RangeGenerator<T>>(start, end));
}
auto acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker&;
template<typename L>

47
include/internal/catch_generators_specific.hpp
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@ -81,6 +81,53 @@ random(T a, T b) {
);
}
template <typename T>
class RangeGenerator final : public IGenerator<T> {
T m_current;
T m_end;
T m_step;
bool m_positive;
public:
RangeGenerator(T const& start, T const& end, T const& step):
m_current(start),
m_end(end),
m_step(step),
m_positive(m_step > T(0))
{
assert(m_current != m_end && "Range start and end cannot be equal");
assert(m_step != T(0) && "Step size cannot be zero");
assert(((m_positive && m_current <= m_end) || (!m_positive && m_current >= m_end)) && "Step moves away from end");
}
RangeGenerator(T const& start, T const& end):
RangeGenerator(start, end, (start < end) ? T(1) : T(-1))
{}
T const& get() const override {
return m_current;
}
bool next() override {
m_current += m_step;
return (m_positive) ? (m_current < m_end) : (m_current > m_end);
}
};
template <typename T>
GeneratorWrapper<T> range(T const& start, T const& end, T const& step) {
static_assert(std::is_integral<T>::value && !std::is_same<T, bool>::value, "Type must be an integer");
return GeneratorWrapper<T>(pf::make_unique<RangeGenerator<T>>(start, end, step));
}
template <typename T>
GeneratorWrapper<T> range(T const& start, T const& end) {
static_assert(std::is_integral<T>::value && !std::is_same<T, bool>::value, "Type must be an integer");
return GeneratorWrapper<T>(pf::make_unique<RangeGenerator<T>>(start, end));
}
} // namespace Generators
} // namespace Catch