Re: Understanding the AST...

[Stefan Koch via Digitalmars-d-learn]

On Thursday, 22 February 2018 at 13:21:04 UTC, joe wrote:

On Monday, 12 February 2018 at 08:47:58 UTC, RazvanN wrote:

[...]

Follow up question...

Why is *.parent always null?
e.g.:

extern(C++) class MyVisitor(AST): ParseTimeTransitiveVisitor!AST
{
  override void visit(AST.Import i)
  {
    assert(i.parent is null); // always true
  }

  override void visitFuncBody(AST.FuncDeclaration f)
  {
    assert(f.parent is null); // always true
  }
}

I think parent is only set after sema.
and you are overriding the parsetime visitor.