Your syntax for macro's call is OK, your key-value pair is parsed as a call
(`id` being regarded as a proc name, and `int` as statement list (block),
passed to it). Now you need to write a macro, that can use it. In that macro
you first assign to `result` the constant part of your type, and then add to it
new nodes, via procs from `macros` module (search forum for examples).
import macros
template obj(tName: untyped): untyped =
type
tName = object
fname: string
age: int
macro typeGen(tName, extraCode: untyped): untyped =
result = getAst(obj(tName))
echo result.treeRepr # so you can see, where and how you add fields
echo extraCode.treeRepr # so you can see, from where and you get them
# and here you parse ``extraCode`` and add additional nodes to
result[0][0][2][2];
# as is now, it will create a type with just 2 fields in the template
typeGen(Employee):
id: int
