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Add constexpr constructor for base_uint

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This commit is contained in:
Scott Schurr
2021-01-13 10:42:17 -08:00
committed by Nik Bougalis
parent 95426efb8a
commit 85307b29d0
10 changed files with 215 additions and 131 deletions
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54
src/test/basics/base_uint_test.cpp
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@@ -195,6 +195,60 @@ struct base_uint_test : beast::unit_test::suite
BEAST_EXPECT(tmp.parseHex(s1));
BEAST_EXPECT(to_string(tmp) == s1);
}
// Constexpr constructors
{
static_assert(test96{}.signum() == 0);
static_assert(test96("0").signum() == 0);
static_assert(test96("000000000000000000000000").signum() == 0);
static_assert(test96("000000000000000000000001").signum() == 1);
static_assert(test96("800000000000000000000000").signum() == 1);
// Everything within the #if should fail during compilation.
#if 0
// Too few characters
static_assert(test96("00000000000000000000000").signum() == 0);
// Too many characters
static_assert(test96("0000000000000000000000000").signum() == 0);
// Non-hex characters
static_assert(test96("00000000000000000000000 ").signum() == 1);
static_assert(test96("00000000000000000000000/").signum() == 1);
static_assert(test96("00000000000000000000000:").signum() == 1);
static_assert(test96("00000000000000000000000@").signum() == 1);
static_assert(test96("00000000000000000000000G").signum() == 1);
static_assert(test96("00000000000000000000000`").signum() == 1);
static_assert(test96("00000000000000000000000g").signum() == 1);
static_assert(test96("00000000000000000000000~").signum() == 1);
#endif // 0
// Verify that constexpr base_uints interpret a string the same
// way parseHex() does.
struct StrBaseUint
{
char const* const str;
test96 tst;
constexpr StrBaseUint(char const* s) : str(s), tst(s)
{
}
};
constexpr StrBaseUint testCases[] = {
"000000000000000000000000",
"000000000000000000000001",
"fedcba9876543210ABCDEF91",
"19FEDCBA0123456789abcdef",
"800000000000000000000000",
"fFfFfFfFfFfFfFfFfFfFfFfF"};
for (StrBaseUint const& t : testCases)
{
test96 t96;
BEAST_EXPECT(t96.parseHex(t.str));
BEAST_EXPECT(t96 == t.tst);
}
}
}
};