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xo-object2: + DString iterator methods

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This commit is contained in:
Roland Conybeare 2026-01-13 17:52:27 -05:00
commit 629db9b93a
2 changed files with 85 additions and 0 deletions
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66
utest/DString.test.cpp
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@ -6,7 +6,9 @@
#include <xo/object2/DString.hpp>
#include <xo/alloc2/arena/IAllocator_DArena.hpp>
#include <catch2/catch.hpp>
#include <cctype>
#include <cstring>
#include <string>
namespace xo {
using xo::scm::DString;
@ -177,6 +179,70 @@ namespace xo {
REQUIRE(std::strcmp(cstr, "hello") == 0);
}
TEST_CASE("DString-begin-end", "[object2][DString]")
{
ArenaConfig cfg { .name_ = "testarena",
.size_ = 4*1024 };
DArena arena = DArena::map(cfg);
auto alloc = with_facet<AAllocator>::mkobj(&arena);
DString * s = DString::from_cstr(alloc, "hello");
REQUIRE(s->begin() == s->chars());
REQUIRE(s->end() == s->chars() + 5);
REQUIRE(s->end() - s->begin() == 5);
*s->begin() = 'H';
REQUIRE(std::strcmp(s->chars(), "Hello") == 0);
}
TEST_CASE("DString-cbegin-cend", "[object2][DString]")
{
ArenaConfig cfg { .name_ = "testarena",
.size_ = 4*1024 };
DArena arena = DArena::map(cfg);
auto alloc = with_facet<AAllocator>::mkobj(&arena);
DString * s = DString::from_cstr(alloc, "hello");
REQUIRE(s->cbegin() == s->chars());
REQUIRE(s->cend() == s->chars() + 5);
REQUIRE(s->cend() - s->cbegin() == 5);
}
TEST_CASE("DString-range-for", "[object2][DString]")
{
ArenaConfig cfg { .name_ = "testarena",
.size_ = 4*1024 };
DArena arena = DArena::map(cfg);
auto alloc = with_facet<AAllocator>::mkobj(&arena);
DString * s = DString::from_cstr(alloc, "hello");
std::string result;
for (char c : *s) {
result += c;
}
REQUIRE(result == "hello");
}
TEST_CASE("DString-iterator-modify", "[object2][DString]")
{
ArenaConfig cfg { .name_ = "testarena",
.size_ = 4*1024 };
DArena arena = DArena::map(cfg);
auto alloc = with_facet<AAllocator>::mkobj(&arena);
DString * s = DString::from_cstr(alloc, "hello");
for (auto it = s->begin(); it != s->end(); ++it) {
*it = std::toupper(*it);
}
REQUIRE(std::strcmp(s->chars(), "HELLO") == 0);
}
} /*namespace ut*/
} /*namespace xo*/