Re: Inspecting __traits(isDeprecated) and deprecation warnings
On Wednesday, 25 September 2019 at 20:35:55 UTC, Boris Carvajal
wrote:
On Wednesday, 25 September 2019 at 14:20:00 UTC, Anonymouse
wrote:
I added some deprecations in my project and am going through
my templates trying to silence the warnings that suddenly
popped up. This template works, but it triggers deprecation
warnings when I am actively trying to avoid them.
This code seems to work for classes too and even with DMD "-de"
compiler switch.
template isMemberDeprecated(T, string name)
{
enum isMemberDeprecated = mixin(q{__traits(isDeprecated, },
T, ".", name, q{)});
}
https://run.dlang.io/is/iQbxOC
I think I can work with this, thanks!
Re: Inspecting __traits(isDeprecated) and deprecation warnings
On 9/25/19 11:35 PM, Boris Carvajal wrote:
On Wednesday, 25 September 2019 at 14:20:00 UTC, Anonymouse wrote:
I added some deprecations in my project and am going through my
templates trying to silence the warnings that suddenly popped up. This
template works, but it triggers deprecation warnings when I am
actively trying to avoid them.
This code seems to work for classes too and even with DMD "-de" compiler
switch.
template isMemberDeprecated(T, string name)
{
enum isMemberDeprecated = mixin(q{__traits(isDeprecated, }, T, ".",
name, q{)});
}
https://run.dlang.io/is/iQbxOC
It's really nice! Thank you.
Re: Inspecting __traits(isDeprecated) and deprecation warnings
On Wednesday, 25 September 2019 at 14:20:00 UTC, Anonymouse wrote:
I added some deprecations in my project and am going through my
templates trying to silence the warnings that suddenly popped
up. This template works, but it triggers deprecation warnings
when I am actively trying to avoid them.
This code seems to work for classes too and even with DMD "-de"
compiler switch.
template isMemberDeprecated(T, string name)
{
enum isMemberDeprecated = mixin(q{__traits(isDeprecated, },
T, ".", name, q{)});
}
https://run.dlang.io/is/iQbxOC
Re: Inspecting __traits(isDeprecated) and deprecation warnings
On Wednesday, 25 September 2019 at 05:57:19 UTC, Tobias Pankrath
wrote:
Does your code work or does it not? I don't seem to unterstand
neither what the question here is nor what the desired result
is. Is the problem that the static reflections triggers the
deprecation warning?
I added some deprecations in my project and am going through my
templates trying to silence the warnings that suddenly popped up.
This template works, but it triggers deprecation warnings when I
am actively trying to avoid them.
getMember in _traits(isDeprecated, __traits(getMember, T, name))
causes a warning on deprecated symbols, which I wanted to avoid
with isDeprecated, but I couldn't without first calling getMember
to get the symbol to evaluate it. There's no way to combine
isDeprecated with getMember without getting a warning.
I worked around the issue by using .tupleof instead of getMember,
which breaks it for classes (.tupleof needs a `this` and
SomeClass.init can't be it) but silences warnings for structs.
https://run.dlang.io/is/TVR8Cb
import std;
void main()
{
static assert(longestMemberName!Foo == "bbb".length);
}
struct Foo
{
string s;
int ii;
bool bbb;
deprecated("Use `s`")
string ;
}
template longestMemberName(T)
if (is(T == struct))
{
enum longestMemberName = ()
{
size_t maxLength;
T thing; // need a `this`
foreach (immutable i, member; thing.tupleof)
{
static if (!__traits(isDeprecated, thing.tupleof[i])
&&
!isType!(thing.tupleof[i]))
{
enum name = __traits(identifier,
thing.tupleof[i]);
maxLength = max(maxLength, name.length);
}
}
return maxLength;
}();
}
Re: Inspecting __traits(isDeprecated) and deprecation warnings
On Tuesday, 24 September 2019 at 17:01:46 UTC, Anonymouse wrote:
I want to write a piece of code that reflects on the names of
members of a passed struct, where some are depreacted.
https://run.dlang.io/is/P9EtRG
struct Foo
{
string s;
int ii;
bool bbb;
deprecated("Use `s`")
string ;
}
template longestMemberLength(T)
{
enum longestMemberLength = ()
{
size_t maxLength;
foreach (immutable i, immutable name;
__traits(allMembers, T))
{
static if (!__traits(isDeprecated,
__traits(getMember, T, name)))
{
maxLength = max(maxLength, name.length);
}
}
return maxLength;
}();
}
static assert (longestMemberLength!Foo == "bbb".length);
onlineapp.d(23): Deprecation: variable `onlineapp.Foo.` is
deprecated - Use s
Is there any way to inspect the deprecated-ness of a member
this way? I only have what __traits(allMembers) gives me.
Does your code work or does it not? I don't seem to unterstand
neither what the question here is nor what the desired result is.
Is the problem that the static reflections triggers the
deprecation warning?
Inspecting __traits(isDeprecated) and deprecation warnings
I want to write a piece of code that reflects on the names of
members of a passed struct, where some are depreacted.
https://run.dlang.io/is/P9EtRG
struct Foo
{
string s;
int ii;
bool bbb;
deprecated("Use `s`")
string ;
}
template longestMemberLength(T)
{
enum longestMemberLength = ()
{
size_t maxLength;
foreach (immutable i, immutable name;
__traits(allMembers, T))
{
static if (!__traits(isDeprecated,
__traits(getMember, T, name)))
{
maxLength = max(maxLength, name.length);
}
}
return maxLength;
}();
}
static assert (longestMemberLength!Foo == "bbb".length);
onlineapp.d(23): Deprecation: variable `onlineapp.Foo.` is
deprecated - Use s
Is there any way to inspect the deprecated-ness of a member this
way? I only have what __traits(allMembers) gives me.
