+++
title = "5b: Macro Expansion"
weight = 44
template = "doc.html"
+++

These functions are used internally by the compiler. They should not be used
directly and are only listed here for completeness.

## `++ah`

Tiki engine

#### Source

```hoon
++  ah
  |_  tik=tiki
  ++  blue
    |=  gen=hoon
    ^-  hoon
    ?.  &(?=(%| -.tik) ?=(~ p.tik))  gen
    [%tsgr [%$ 3] gen]
  ::
  ++  teal
    |=  mod=spec
    ^-  spec
    ?:  ?=(%& -.tik)  mod
    [%over [%& 3]~ mod]
  ::
  ++  tele
    |=  syn=skin
    ^-  skin
    ?:  ?=(%& -.tik)  syn
    [%over [%& 3]~ syn]
  ::
  ++  gray
    |=  gen=hoon
    ^-  hoon
    ?-  -.tik
      %&  ?~(p.tik gen [%tstr [u.p.tik ~] [%wing q.tik] gen])
      %|  [%tsls ?~(p.tik q.tik [%ktts u.p.tik q.tik]) gen]
    ==
  ::
  ++  puce
    ^-  wing
    ?-  -.tik
      %&  ?~(p.tik q.tik [u.p.tik ~])
      %|  [[%& 2] ~]
    ==
  ::
  ++  wthp  |=  opt=(list (pair spec hoon))
            %+  gray  %wthp
            [puce (turn opt |=([a=spec b=hoon] [a (blue b)]))]
  ++  wtkt  |=([sic=hoon non=hoon] (gray [%wtkt puce (blue sic) (blue non)]))
  ++  wtls  |=  [gen=hoon opt=(list (pair spec hoon))]
            %+  gray  %wtls
            [puce (blue gen) (turn opt |=([a=spec b=hoon] [a (blue b)]))]
  ++  wtpt  |=([sic=hoon non=hoon] (gray [%wtpt puce (blue sic) (blue non)]))
  ++  wtsg  |=([sic=hoon non=hoon] (gray [%wtsg puce (blue sic) (blue non)]))
  ++  wthx  |=(syn=skin (gray [%wthx (tele syn) puce]))
  ++  wtts  |=(mod=spec (gray [%wtts (teal mod) puce]))
  --
::
```

---

## `++ax`

Spec engine

#### Source

This core is very large, refer to `hoon.hoon` for the source.

---

## `++ap`

Hoon engine

#### Source

This core is very large, refer to `hoon.hoon` for the source.

---