Yardanico

import macros, tables

macro echoType(x: typed): untyped = 
  let impl = x.symbol.getImpl()
  # we're called on some type
  
  if impl.kind == nnkTypeDef:
    echo "type ", toStrLit(impl)
  # we're called on a variable
  else:

Yardanico

HTTP/1.1 200 OK
Server: nginx
Date: Fri, 20 Oct 2017 19:12:15 GMT
Content-Type: application/json
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: Express
X-Upstream: 127.0.0.1:5080
X-Server-ID: apps-01

Yardanico

#?braces

for x in 0..10 {
  echo x
}

Yardanico

import macros


macro doNothing(input: untyped): untyped =
  echo treeRepr input
  result = input
  echo input.toStrLit

doNothing:
  echo "hello world"

Yardanico

import macros, sequtils, future

type 
  Container[T] = concept x
    for item in x:
      item is T

proc forCompImpl(yieldResult: bool, comp: NimNode): NimNode {.compileTime.} =
  expectLen(comp, 3)
  expectKind(comp, nnkInfix)

Yardanico

import macros, strutils, sequtils, future

type ForComprehension = distinct object
type ForComprehensionYield = distinct object

var fc*: ForComprehension

proc forCompImpl(yieldResult: bool, comp: NimNode): NimNode {.compileTime.} =
  expectLen(comp, 3)
  expectKind(comp, nnkInfix)

Yardanico

/* Generated by Nim Compiler v0.17.3 */
/*   (c) 2017 Andreas Rumpf */
/* The generated code is subject to the original license. */
/* Compiled for: Linux, amd64, gcc */
/* Command for C compiler:
   gcc -c  -w -O3 -fno-strict-aliasing  -I/home/tiber/nim/lib -o /home/tiber/projects/experiments/nimcache/stdlib_system.o /home/tiber/projects/experiments/nimcache/stdlib_system.c */
#define NIM_NEW_MANGLING_RULES
#define NIM_INTBITS 64

#include "nimbase.h"

Yardanico

/* Generated by Nim Compiler v0.17.3 */
/*   (c) 2017 Andreas Rumpf */
/* The generated code is subject to the original license. */
/* Compiled for: Linux, amd64, gcc */
/* Command for C compiler:
   gcc -c  -w -O3 -fno-strict-aliasing  -I/home/tiber/nim/lib -o /home/tiber/projects/experiments/nimcache/ffa.o /home/tiber/projects/experiments/nimcache/ffa.c */
#define NIM_NEW_MANGLING_RULES
#define NIM_INTBITS 64

#include "nimbase.h"

Yardanico

type
  Comparable = concept a
    (a < a) is bool
  
proc ada[T: Comparable](a, b: T): T =
  if a < b:
    return b
  else:
    return a 

Yardanico

type
  Comparable = concept a
    (a < a) is bool

proc myMax(a, b: Comparable): Comparable =
  if a < b:
    return b
  else:
    return a