On Sunday, 1 October 2017 at 01:05:56 UTC, Nicholas Wilson wrote:
struct MyType { void* raw; static struct Info { @(42) int foo; } mixin generateGetInfo!MyTypeGetInfo; }extern(C) void MyTypeGetInfo(void*,int,size_t,void*size_t*); mixin template generateGetInfo(alias func) { foreach(field; typeof(this).Info.tupleof) {mixin("@property " ~ typeof(field).stringof ~ " " ~ field.stringof ~ "()" ~" { " ~ " typeof(return) ret;" ~func.stringof ~ "(this.tupleof," ~ __traits(getAttributes, field)[0] ~ ",ret.sizeof,&ret,null);" ~"return ret; }"); } } Fails with Error: declaration expected, not 'foreach' Error: no identifier for declarator typeof(this).Info.tupleof Error: declaration expected, not ')'I also tried a double mixin, one for the foreach and one for the mixin to no avail. How do I do a foreach in a [template] mixin to procedurally inject multiple declarations ? Static foreach is not an option as I am using LDC.
Hmm, generating the mixed in code as all one string and then mixing it in should work I think. Rather ugly though.
