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{.used.}
import std/macros
template imp(x: untyped) = import x
macro tryImport(x: untyped, name: static string) =
let vs = ident(name & "Version")
quote do:
when not compiles(imp `x`):
static:
error("Cannot find submodule " & `name` & ".\n" &
"Please run `make submodule` to fetch the required submodules.")
import `x` as `vs`
macro checkVersion(xs: static string, major, minor, patch: int) =
let x = ident(xs & "Version")
quote do:
when `x`.Major < `major` or `x`.Minor < `minor` or `x`.Patch < `patch`:
var es = $`major` & "." & $`minor` & "." & $`patch`
var gs = $`x`.Major & "." & $`x`.Minor & "." & $`x`.Patch
error("Version of " & `xs` & " too low (expected " & es & ", got " &
gs & ").\n" &
"Please run `make submodule` to update.")
tryImport chagashi/version, "chagashi"
tryImport chame/version, "chame"
static:
checkVersion("chagashi", 0, 4, 1)
checkVersion("chame", 0, 14, 3)
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