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to_integral.test.cc
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// Copyright (c) 2022 Mikael Simonsson <https://mikaelsimonsson.com>.
// SPDX-License-Identifier: BSL-1.0
#include "snn-core/ascii/to_integral.hh"
#include "snn-core/unittest.hh"
#include "snn-core/range/step.hh"
namespace snn::app
{
namespace
{
constexpr bool example()
{
auto opt = ascii::to_integral<i64>(cstrrng{"123"});
static_assert(std::is_same_v<decltype(opt), optional<i64>>);
snn_require(opt.has_value());
snn_require(opt.value() == 123);
snn_require(ascii::to_integral<i64>(cstrrng{"0"}).value() == 0);
snn_require(ascii::to_integral<i64>(cstrrng{"-0"}).value() == 0);
snn_require(ascii::to_integral<i64>(cstrrng{"7"}).value() == 7);
snn_require(ascii::to_integral<i64>(cstrrng{"-3"}).value() == -3);
snn_require(ascii::to_integral<i64>(cstrrng{"-38272"}).value() == -38272);
// Max
snn_require(ascii::to_integral<i64>(cstrrng{"9223372036854775807"}).value() ==
constant::limit<i64>::max);
// Min
snn_require(ascii::to_integral<i64>(cstrrng{"-9223372036854775808"}).value() ==
constant::limit<i64>::min);
// Invalid
snn_require(!ascii::to_integral<i64>(cstrrng{""}));
snn_require(!ascii::to_integral<i64>(cstrrng{"-"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"abc"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"a1"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"\0"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"-\0"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"922337203x238"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"-922337203x238"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"-7a"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"3foo"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"3\0"}));
// Invalid - Overflow
snn_require(!ascii::to_integral<i64>(cstrrng{"9223372036854775808"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"-9223372036854775809"}));
// Invalid - Zero prefix.
snn_require(!ascii::to_integral<i64>(cstrrng{"-0922337203"}));
snn_require(!ascii::to_integral<i64>(cstrrng{"0922337203"}));
return true;
}
constexpr bool test_to_integral()
{
// u64
static_assert(ascii::to_integral<u64>(cstrrng{"0"}));
static_assert(ascii::to_integral<u64>(cstrrng{"0"}).value() == 0);
static_assert(ascii::to_integral<u64>(cstrrng{"123"}));
static_assert(ascii::to_integral<u64>(cstrrng{"123"}).value() == 123);
static_assert(ascii::to_integral<u64>(cstrrng{"832392"}));
static_assert(ascii::to_integral<u64>(cstrrng{"832392"}).value() == 832392);
// Max
static_assert(ascii::to_integral<u64>(cstrrng{"18446744073709551615"}));
static_assert(ascii::to_integral<u64>(cstrrng{"18446744073709551615"}).value() ==
constant::limit<u64>::max);
// Invalid
static_assert(!ascii::to_integral<u64>(cstrrng{""}));
static_assert(!ascii::to_integral<u64>(cstrrng{"922337203x238"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"3foo"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"3\0"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"-"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"-0"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"-3"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"-184467440"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"abc"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"a1"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"\0"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"-\0"}));
// Invalid - Overflow
static_assert(!ascii::to_integral<u64>(cstrrng{"18446744073709551616"}));
static_assert(!ascii::to_integral<u64>(cstrrng{"99999999999999999999"}));
// Invalid - Zero prefix.
static_assert(!ascii::to_integral<u64>(cstrrng{"0184467440"}));
// u32
// Max
static_assert(ascii::to_integral<u32>(cstrrng{"4294967295"}));
static_assert(ascii::to_integral<u32>(cstrrng{"4294967295"}).value() ==
constant::limit<u32>::max);
// Invalid - Overflow
static_assert(!ascii::to_integral<u32>(cstrrng{"4294967296"}));
static_assert(!ascii::to_integral<u32>(cstrrng{"18446744073709551616"}));
// i32
// Max
static_assert(ascii::to_integral<i32>(cstrrng{"2147483647"}));
static_assert(ascii::to_integral<i32>(cstrrng{"2147483647"}).value() ==
constant::limit<i32>::max);
// Min
static_assert(ascii::to_integral<i32>(cstrrng{"-2147483648"}));
static_assert(ascii::to_integral<i32>(cstrrng{"-2147483648"}).value() ==
constant::limit<i32>::min);
// Overflow
static_assert(!ascii::to_integral<i32>(cstrrng{"2147483648"}));
static_assert(!ascii::to_integral<i32>(cstrrng{"-2147483649"}));
static_assert(!ascii::to_integral<i32>(cstrrng{"18446744073709551616"}));
static_assert(!ascii::to_integral<i32>(cstrrng{"-9223372036854775809"}));
// u16
// Max
static_assert(ascii::to_integral<u16>(cstrrng{"65535"}));
static_assert(ascii::to_integral<u16>(cstrrng{"65535"}).value() ==
constant::limit<u16>::max);
// Overflow
static_assert(!ascii::to_integral<u16>(cstrrng{"65536"}));
// i16
// Max
static_assert(ascii::to_integral<i16>(cstrrng{"32767"}));
static_assert(ascii::to_integral<i16>(cstrrng{"32767"}).value() ==
constant::limit<i16>::max);
// Min
static_assert(ascii::to_integral<i16>(cstrrng{"-32768"}));
static_assert(ascii::to_integral<i16>(cstrrng{"-32768"}).value() ==
constant::limit<i16>::min);
// Overflow
static_assert(!ascii::to_integral<i16>(cstrrng{"32768"}));
static_assert(!ascii::to_integral<i16>(cstrrng{"-32769"}));
// i16 (hex)
// Max
static_assert(ascii::to_integral<i16, math::base::hex>(cstrrng{"7FfF"}));
static_assert(ascii::to_integral<i16, math::base::hex>(cstrrng{"7FfF"}).value() ==
constant::limit<i16>::max);
// Min
static_assert(ascii::to_integral<i16, math::base::hex>(cstrrng{"-8000"}));
static_assert(ascii::to_integral<i16, math::base::hex>(cstrrng{"-8000"}).value() ==
constant::limit<i16>::min);
// Overflow
static_assert(!ascii::to_integral<i16, math::base::hex>(cstrrng{"8000"}));
static_assert(!ascii::to_integral<i16, math::base::hex>(cstrrng{"-8001"}));
// u8
// Max
static_assert(ascii::to_integral<u8>(cstrrng{"255"}));
static_assert(ascii::to_integral<u8>(cstrrng{"255"}).value() ==
constant::limit<u8>::max);
// Overflow
static_assert(!ascii::to_integral<u8>(cstrrng{"256"}));
// u8 (binary)
// Max
static_assert(ascii::to_integral<u8, math::base::binary>(cstrrng{"11111111"}));
static_assert(ascii::to_integral<u8, math::base::binary>(cstrrng{"11111111"}).value() ==
constant::limit<u8>::max);
// Overflow
static_assert(!ascii::to_integral<u8, math::base::binary>(cstrrng{"100000000"}));
// u8 (octal)
static_assert(ascii::to_integral<u8, math::base::octal>(cstrrng{"77"}));
static_assert(ascii::to_integral<u8, math::base::octal>(cstrrng{"77"}).value() == 63);
// Max
static_assert(ascii::to_integral<u8, math::base::octal>(cstrrng{"377"}));
static_assert(ascii::to_integral<u8, math::base::octal>(cstrrng{"377"}).value() ==
constant::limit<u8>::max);
// Overflow
static_assert(!ascii::to_integral<u8, math::base::octal>(cstrrng{"400"}));
// Invalid
static_assert(!ascii::to_integral<u8, math::base::octal>(cstrrng{"778"}));
// u8 (hex)
// Max
static_assert(ascii::to_integral<u8, math::base::hex>(cstrrng{"FF"}));
static_assert(ascii::to_integral<u8, math::base::hex>(cstrrng{"FF"}).value() ==
constant::limit<u8>::max);
// Overflow
static_assert(!ascii::to_integral<u8, math::base::hex>(cstrrng{"100"}));
// i8
// Max
static_assert(ascii::to_integral<i8>(cstrrng{"127"}));
static_assert(ascii::to_integral<i8>(cstrrng{"127"}).value() ==
constant::limit<i8>::max);
// Min
static_assert(ascii::to_integral<i8>(cstrrng{"-128"}));
static_assert(ascii::to_integral<i8>(cstrrng{"-128"}).value() ==
constant::limit<i8>::min);
// Overflow
static_assert(!ascii::to_integral<i8>(cstrrng{"128"}));
static_assert(!ascii::to_integral<i8>(cstrrng{"-129"}));
// i8 (binary)
// Max
static_assert(ascii::to_integral<i8, math::base::binary>(cstrrng{"1111111"}));
static_assert(ascii::to_integral<i8, math::base::binary>(cstrrng{"1111111"}).value() ==
constant::limit<i8>::max);
// Min
static_assert(ascii::to_integral<i8, math::base::binary>(cstrrng{"-10000000"}));
static_assert(
ascii::to_integral<i8, math::base::binary>(cstrrng{"-10000000"}).value() ==
constant::limit<i8>::min);
// Overflow
static_assert(!ascii::to_integral<i8, math::base::binary>(cstrrng{"10000000"}));
static_assert(!ascii::to_integral<i8, math::base::binary>(cstrrng{"-10000001"}));
// i8 (octal)
// Max
static_assert(ascii::to_integral<i8, math::base::octal>(cstrrng{"177"}));
static_assert(ascii::to_integral<i8, math::base::octal>(cstrrng{"177"}).value() ==
constant::limit<i8>::max);
// Min
static_assert(ascii::to_integral<i8, math::base::octal>(cstrrng{"-200"}));
static_assert(ascii::to_integral<i8, math::base::octal>(cstrrng{"-200"}).value() ==
constant::limit<i8>::min);
// Overflow
static_assert(!ascii::to_integral<i8, math::base::octal>(cstrrng{"200"}));
static_assert(!ascii::to_integral<i8, math::base::octal>(cstrrng{"-201"}));
// Non-contiguous range.
static_assert(ascii::to_integral<i32>(range::step{'1', '4'}).value() == 123);
return true;
}
}
}
namespace snn
{
void unittest()
{
snn_static_require(app::example());
static_assert(app::test_to_integral());
}
}