mirror of
https://github.com/status-im/nim-rlp.git
synced 2025-02-22 10:48:20 +00:00
34 lines
1005 B
Nim
34 lines
1005 B
Nim
import macros
|
|
|
|
template rlpIgnore* {.pragma.}
|
|
## Specifies that a certain field should be ignored for the purposes
|
|
## of RLP serialization
|
|
|
|
template rlpInline* {.pragma.}
|
|
## This can be specified on a record field in order to avoid the
|
|
## default behavior of wrapping the record in a RLP list.
|
|
|
|
template rlpCustomSerialization* {.pragma.}
|
|
## This pragma can be applied to a record field to enable the
|
|
## use of custom `read` and `append` overloads that also take
|
|
## a reference to the object holding the field.
|
|
|
|
template enumerateRlpFields*[T](x: T, op: untyped) =
|
|
for f in fields(x):
|
|
when not hasCustomPragma(f, rlpIgnore):
|
|
op(f)
|
|
|
|
macro rlpFields*(T: typedesc, fields: varargs[untyped]): untyped =
|
|
var body = newStmtList()
|
|
let
|
|
ins = genSym(nskParam, "instance")
|
|
op = genSym(nskParam, "op")
|
|
|
|
for field in fields:
|
|
body.add quote do: `op`(`ins`.`field`)
|
|
|
|
result = quote do:
|
|
template enumerateRlpFields*(`ins`: `T`, `op`: untyped) {.inject.} =
|
|
`body`
|
|
|