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Implement a simplified variant of std::unique_ptr<T>

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This simplified variant supports only a subset of the functionality
in `std::unique_ptr<T>`. `Catch::Detail::unique_ptr<T>` only supports
single element pointer (no array support) with default deleter.

By removing the support for custom deleters, we also avoid requiring
significant machinery to support EBO, speeding up instantiations of
`unique_ptr<T>` significantly. Catch2 also currently does not need
to support `unique_ptr<T[]>`, so that is not supported either.
This commit is contained in:
Martin Hořeňovský
2020-05-24 23:41:02 +02:00
parent 66ab942903
commit 41bbaa6d57
14 changed files with 890 additions and 8 deletions
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244
tests/SelfTest/Baselines/console.sw.approved.txt
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@@ -11547,6 +11547,30 @@ Exception.tests.cpp:<line number>: FAILED:
due to unexpected exception with message:
3.14
-------------------------------------------------------------------------------
Upcasting special member functions
Move constructor
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( bptr->i == 3 )
with expansion:
3 == 3
-------------------------------------------------------------------------------
Upcasting special member functions
move assignment
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( bptr->i == 3 )
with expansion:
3 == 3
-------------------------------------------------------------------------------
Usage of the SizeIs range matcher
Some with stdlib containers
@@ -13096,6 +13120,42 @@ with expansion:
with message:
Testing if fib[7] (21) is even
-------------------------------------------------------------------------------
make_unique reimplementation
From lvalue copies
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE_FALSE( lval.has_moved )
with expansion:
!false
-------------------------------------------------------------------------------
make_unique reimplementation
From rvalue moves
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( rval.has_moved )
with expansion:
true
-------------------------------------------------------------------------------
make_unique reimplementation
Variadic constructor
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr == std::tuple<int, double, int>{1, 2., 3} )
with expansion:
{?} == {?}
-------------------------------------------------------------------------------
mean
-------------------------------------------------------------------------------
@@ -14485,6 +14545,186 @@ InternalBenchmark.tests.cpp:<line number>: PASSED:
with expansion:
0.95 == 0.95
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Default constructed unique_ptr is empty
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE_FALSE( ptr )
with expansion:
!{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr.get() == 0 )
with expansion:
0 == 0
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Take ownership of allocation
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr )
with expansion:
{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr == 0 )
with expansion:
0 == 0
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr.get() == naked_ptr )
with expansion:
0x<hex digits> == 0x<hex digits>
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Take ownership of allocation
Plain reset deallocates
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE_FALSE( ptr )
with expansion:
!{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr.get() == 0 )
with expansion:
0 == 0
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Take ownership of allocation
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr )
with expansion:
{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr == 0 )
with expansion:
0 == 0
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr.get() == naked_ptr )
with expansion:
0x<hex digits> == 0x<hex digits>
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Take ownership of allocation
Reset replaces ownership
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr )
with expansion:
{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr.get() != 0 )
with expansion:
0x<hex digits> != 0
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr == 2 )
with expansion:
2 == 2
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Release releases ownership
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
CHECK_FALSE( ptr )
with expansion:
!{?}
UniquePtr.tests.cpp:<line number>: PASSED:
CHECK( ptr.get() == 0 )
with expansion:
0 == 0
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Move constructor
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE_FALSE( ptr1 )
with expansion:
!{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr2 )
with expansion:
{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr2 == 1 )
with expansion:
1 == 1
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
Move assignment
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE_FALSE( ptr2 )
with expansion:
!{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( ptr1 )
with expansion:
{?}
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr1 == 2 )
with expansion:
2 == 2
-------------------------------------------------------------------------------
unique_ptr reimplementation: basic functionality
free swap
-------------------------------------------------------------------------------
UniquePtr.tests.cpp:<line number>
...............................................................................
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr1 == 2 )
with expansion:
2 == 2
UniquePtr.tests.cpp:<line number>: PASSED:
REQUIRE( *ptr2 == 1 )
with expansion:
1 == 1
-------------------------------------------------------------------------------
vec<vec<string,alloc>> -> toString
-------------------------------------------------------------------------------
@@ -14792,6 +15032,6 @@ Misc.tests.cpp:<line number>
Misc.tests.cpp:<line number>: PASSED:
===============================================================================
test cases: 334 | 244 passed | 86 failed | 4 failed as expected
assertions: 1913 | 1744 passed | 148 failed | 21 failed as expected
test cases: 337 | 247 passed | 86 failed | 4 failed as expected
assertions: 1941 | 1772 passed | 148 failed | 21 failed as expected