Re: smarter reflection issue
It helped! it's working now! :)
Thanks!
"Jesse Phillips" wrote in message news:itgg6i$2tf3$1...@digitalmars.com...
Lloyd Dupont Wrote:
Hi Jesse, this won't work!
It's my fault in not explaining my problem well though...
I forget to mention something...
I'm using property syntax and try to call the method
Say I have
=
private int _foo;
@property public int Foo() { return _foo; }
@property public void Foo(int value) { _foo = value; }
=
if I call MEMBER(MyClass, "Foo")
I'd like to do some static test for "int Foo()" and "void Foo(int)"
So... how will I go on solving that?
I don't remember how to package these up nicely:
void MEMBER(T, string fun)(T m) if(expectedType!(T, fun).valid) {
}
template expectedType(T, string fun) {
private T s;
static if(mixin("__traits(compiles, s."~fun~" = 0) && is(typeof(s."~fun~") :
int)"))
enum valid = true;
else
enum valid = false;
}
Re: smarter reflection issue
Lloyd Dupont Wrote:
> Hi Jesse, this won't work!
> It's my fault in not explaining my problem well though...
>
> I forget to mention something...
> I'm using property syntax and try to call the method
>
> Say I have
> =
> private int _foo;
> @property public int Foo() { return _foo; }
> @property public void Foo(int value) { _foo = value; }
> =
> if I call MEMBER(MyClass, "Foo")
> I'd like to do some static test for "int Foo()" and "void Foo(int)"
>
> So... how will I go on solving that?
I don't remember how to package these up nicely:
void MEMBER(T, string fun)(T m) if(expectedType!(T, fun).valid) {
}
template expectedType(T, string fun) {
private T s;
static if(mixin("__traits(compiles, s."~fun~" = 0) &&
is(typeof(s."~fun~") : int)"))
enum valid = true;
else
enum valid = false;
}
Re: smarter reflection issue
Hi Jesse, this won't work!
It's my fault in not explaining my problem well though...
I forget to mention something...
I'm using property syntax and try to call the method
Say I have
=
private int _foo;
@property public int Foo() { return _foo; }
@property public void Foo(int value) { _foo = value; }
=
if I call MEMBER(MyClass, "Foo")
I'd like to do some static test for "int Foo()" and "void Foo(int)"
So... how will I go on solving that?
"Jesse Phillips" wrote in message news:itdqs4$mv0$1...@digitalmars.com...
MemberDesc MEMBER(T, string memberName)() if(std.traits.hasMember!(T,
memberName))
{
...
}
Lloyd Dupont Wrote:
I have a MemberDesc class which describe a class's members.
I fill it with a template method like that (with GETTER and SETTER some
other templated method I wrote)
=
MemberDesc MEMBER(T, string memberName)()
{
TypeInfo ti = typeid( typeof(__traits(getMember, T, memberName)) );
Variant function(Object target) getter = null;
getter = &GETTER!(T, memberName);
void function(Object target, Variant value) setter = null;
setter = &SETTER!(T, memberName);
return new MemberDesc(memberName, ti , getter, setter);
}
=
And it works except that I don't do any check that the setter / getter
method exist!
I tried something like that
static if( __traits(compiles, __traits(getMember, T, member)) )
{
getter = &GETTER!(T, memberName);
}
but this always fail... mm.. how could I check for the getter?
and i guess it's even harder for the setter!
how about something like that (how to fix it?)
=
static if( __traits(compiles, __traits(getMember, T, member) =
typeof(__traits(getMember, T, memberName)).init) )
{
setter = &SETTER!(T, memberName);
}
=
Re: smarter reflection issue
MemberDesc MEMBER(T, string memberName)() if(std.traits.hasMember!(T,
memberName))
{
...
}
Lloyd Dupont Wrote:
> I have a MemberDesc class which describe a class's members.
> I fill it with a template method like that (with GETTER and SETTER some
> other templated method I wrote)
> =
> MemberDesc MEMBER(T, string memberName)()
> {
> TypeInfo ti = typeid( typeof(__traits(getMember, T, memberName)) );
>
> Variant function(Object target) getter = null;
> getter = &GETTER!(T, memberName);
>
>
> void function(Object target, Variant value) setter = null;
> setter = &SETTER!(T, memberName);
>
> return new MemberDesc(memberName, ti , getter, setter);
> }
> =
>
> And it works except that I don't do any check that the setter / getter
> method exist!
>
> I tried something like that
>
> static if( __traits(compiles, __traits(getMember, T, member)) )
> {
> getter = &GETTER!(T, memberName);
> }
>
>
> but this always fail... mm.. how could I check for the getter?
>
>
> and i guess it's even harder for the setter!
> how about something like that (how to fix it?)
> =
> static if( __traits(compiles, __traits(getMember, T, member) =
> typeof(__traits(getMember, T, memberName)).init) )
> {
> setter = &SETTER!(T, memberName);
> }
> =
>
