On Sun, Jul 22, 2012 at 9:31 AM, Chris NS <[email protected]> wrote: > Is there any means to get meaningful moduleinfo at compile time, > specifically a list of the local classes of a given module? > __traits(allMembers, mod) doesn't work: "inverse.d(109): Error: import data > has no members". > > I was hoping that something along these lines would be possible in CTFE: > > foreach ( decl ; __traits( allMembers, data ) ) { > if ( is( typeof( mixin( decl ) ) == class ) > && !__traits( isAbstractclass, mixin( decl ) ) ) { > // ...some code in here... > } > }
The catch is that __traits(allMembers, symbol) does not work on a simple module name (as in "module foo;"). It does work on composite module names (as in "module std.algorithm;" or "module mypackage.mymodule;"). I don't know if that's a bug or if that fact that __traits(allMembers, ...) works on a module is an unexpected loophole. Anyway, IIRC, I give code to do that in an online tutorial on templates, here: https://github.com/PhilippeSigaud/D-templates-tutorial/blob/master/dtemplates.pdf?raw=true The code predates a few recent addition to std.traits, so it could possibly made shorter now, I don't know. Read from p.114 (20.3) and following. I guess what you need is section 20.7, p. 118+. The code from all examples should be in a directory on Github, also. Philippe
