mirror of
https://github.com/nim-lang/Nim.git
synced 2025-12-30 01:44:37 +00:00
40 lines
693 B
Nim
40 lines
693 B
Nim
discard """
|
|
output: '''HELLO WORLD
|
|
c_func
|
|
12'''
|
|
"""
|
|
|
|
import macros, strutils
|
|
|
|
emit("echo " & '"' & "hello world".toUpperAscii & '"')
|
|
|
|
# bug #1025
|
|
|
|
macro foo(icname): untyped =
|
|
let ic = newStrLitNode($icname)
|
|
result = quote do:
|
|
proc x* =
|
|
proc private {.exportc: `ic`.} = discard
|
|
echo `ic`
|
|
private()
|
|
|
|
foo(c_func)
|
|
x()
|
|
|
|
|
|
template volatileLoad[T](x: ptr T): T =
|
|
var res: T
|
|
{.emit: [res, " = (*(", type(x[]), " volatile*)", x, ");"].}
|
|
res
|
|
|
|
template volatileStore[T](x: ptr T; y: T) =
|
|
{.emit: ["*((", type(x[]), " volatile*)(", x, ")) = ", y, ";"].}
|
|
|
|
proc main =
|
|
var st: int
|
|
var foo: ptr int = addr st
|
|
volatileStore(foo, 12)
|
|
echo volatileLoad(foo)
|
|
|
|
main()
|