basically I want wrap new proc takes same args except first arg and return same
results as original procs,
all procs wraps as same logic, the original takes type A as self, the new
version takes type B as self, in the proc body add few lines and call original
proc,
the way 1: just make a macro that takes typed proc
well, it doesn't work.
on the 1.2.6 it shows `Error: illformed AST`
on the devel branch it shows `Error: Expected one of {nnkLambda, nnkDo,
nnkProcDef, nnkMethodDef, nnkConverterDef, nnkMacroDef, nnkTemplateDef,
nnkIteratorDef, nnkFuncDef}, got nnkSym`
<https://play.nim-lang.org/#ix=2zg8>
import macros
import asyncdispatch
proc hello(){.async.} = discard
macro wrapApi(prc:typed):untyped =
result = prc.getImpl
result.name = ident"abc"
wrapApi(hello)
Run
the way 2 :
wraps it as template
<https://play.nim-lang.org/#ix=2zgw>
well, it can't resolve the `await`
macro wraps(): untyped =
result = nnkStmtList.newTree()
for api in ["rawQuery"]:
let id = ident(api)
let conId = ident("conIdx")
let args = ident("args")
let r = ident("result")
let prc = nnkTemplateDef.newTree(
nnkPostfix.newTree(
newIdentNode("*"),
id
),
Run
the way 3:
make the macro as a pragma that attach to original proc, turn it to original
version and wrapped version, that maybe work, but I really dont want to touch
original code.
