• d-bugmail puremagic.com (43/43) Jul 13 2012 http://d.puremagic.com/issues/show_bug.cgi?id=8388
• d-bugmail puremagic.com (24/24) Jul 13 2012 http://d.puremagic.com/issues/show_bug.cgi?id=8388

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=8388

           Summary: std.traits.MemberFunctionsTuple doesn't work with
                    constructors or destructors
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: jmdavisProg gmx.com


--- Comment #0 from Jonathan M Davis <jmdavisProg gmx.com> 2012-07-13 22:52:08
PDT ---
This code

import std.stdio;
import std.traits;

class C
{
    this() {}
    this(int i) {}
    this(int i, float j) {}
    this(string s) {}

    ~this() {}
}

void main()
{
    writeln(__traits(hasMember, C, "__ctor"));
    writeln(__traits(hasMember, C, "__dtor"));

    foreach(f; MemberFunctionsTuple!(C, "__ctor"))
        writeln(f.stringof);

    foreach(f; MemberFunctionsTuple!(C, "__dtor"))
        writeln(f.stringof);
}


prints

true
true

The MemberFunctionsTuple results are empty. The constructors and destructor
should be listed, but none are. So, clearly, while hasMember properly finds the
constructors and destructor, MemberFunctionsTuple does not.

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=8388



--- Comment #1 from Jonathan M Davis <jmdavisProg gmx.com> 2012-07-13 23:33:57
PDT ---
It looks like MermberFunctionsTuple only grabs virtual functions. This code

import std.stdio;
import std.traits;

class C
{
    void foo()() {}
    void goo() { foo(); }
}

void main()
{
    foreach(f; MemberFunctionsTuple!(C, "foo"))
        writeln(f.stringof);

    foreach(f; MemberFunctionsTuple!(C, "goo"))
        writeln(f.stringof);
}

just prints

goo()

foo() isn't printed. So, the constructors and destructor probably aren't being
grabbed, because they're non-virtual.

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