2018-03-22 17:28:34 +00:00
|
|
|
import macros, servertypes
|
|
|
|
|
|
|
|
|
|
var rpcCallRefs {.compiletime.} = newSeq[(string)]()
|
|
|
|
|
|
|
|
|
|
macro rpc*(prc: untyped): untyped =
|
2018-04-11 15:34:49 +03:00
|
|
|
# REVIEW: (IMPORTANT) I think the rpc procs should be async.
|
|
|
|
|
# they may need to call into other async procs of the VM
|
2018-03-22 17:28:34 +00:00
|
|
|
result = prc
|
|
|
|
|
let
|
|
|
|
|
params = prc.findChild(it.kind == nnkFormalParams)
|
|
|
|
|
procName = prc.findChild(it.kind == nnkIdent)
|
|
|
|
|
|
|
|
|
|
assert params != nil
|
|
|
|
|
procName.expectKind(nnkIdent)
|
|
|
|
|
for param in params.children:
|
|
|
|
|
if param.kind == nnkIdentDefs:
|
|
|
|
|
if param[1] == ident("JsonNode"):
|
|
|
|
|
return
|
|
|
|
|
var identDefs = newNimNode(nnkIdentDefs)
|
|
|
|
|
identDefs.add ident("params"), ident("JsonNode"), newEmptyNode()
|
|
|
|
|
# check there isn't already a result type
|
|
|
|
|
assert params.len == 1 and params[0].kind == nnkEmpty
|
|
|
|
|
params[0] = ident("JsonNode")
|
|
|
|
|
params.add identDefs
|
|
|
|
|
# Adds to compiletime list of rpc calls so we can register them in bulk
|
|
|
|
|
# for multiple servers using `registerRpcs`.
|
|
|
|
|
rpcCallRefs.add $procName
|
|
|
|
|
|
|
|
|
|
macro registerRpcs*(server: RpcServer): untyped =
|
|
|
|
|
## Step through procs currently registered with {.rpc.} and add a register call for server
|
|
|
|
|
result = newNimNode(nnkStmtList)
|
|
|
|
|
result.add newCall(newDotExpr(ident($server), ident("unRegisterAll")))
|
|
|
|
|
for procName in rpcCallRefs:
|
|
|
|
|
let de = newDotExpr(ident($server), ident("register"))
|
|
|
|
|
result.add(newCall(de, newStrLitNode(procName), ident(procName)))
|
