How to make autocompletion for IDE?

[unDEFER via Digitalmars-d-learn]

On Tuesday, 25 July 2017 at 10:42:40 UTC, Basile B. wrote:

> I think that you underestimate the amount of work needed and 
> your solution which is to use the compiler with -o- looks bad. 
> What you really need is a compiler front-end which is basically 
> what libdparse + DSymbol are. DCD uses them.

No, with feature like
auto func()
and
void templ(T)(T a)
if (is(a))
{}

It is impossible to consider all it by myself. It means write the 
second compiler.
So I just want to use the ready compiler.