import kdl
var doc = parseKdl("""
// Nodes can be separated into multiple lines
title \
  "Some title"

  // Files must be utf8 encoded!
  smile (emoji)"😁" {
        upside-down (emoji)"🙃"
  }

  // Instead of anonymous nodes, nodes and properties can be wrapped
  // in "" for arbitrary node names.
  "!@#$@$%Q#$%~@!40" "1.2.3" "!!!!!"=true

  // The following is a legal bare identifier:
  foo123~!@#$%^&*.:'|?+ "weeee"

  // And you can also use unicode!
  ノード お名前="☜(ﾟヮﾟ☜)"

  // kdl specifically allows properties and values to be
  // interspersed with each other, much like CLI commands.
  foo bar=true "baz" quux=false 1 2 3
  """) # You can also read files using parseKdlFile("file.kdl")
# Nodes are represented like:
# type KdlNode* = object
#   tag*: Option[string]
#   name*: string
#   args*: seq[KdlVal]
#   props*: Table[string, KdlVal]
#   children*: seq[KdlNode]
assert doc[0].args[0].isString() # title "Some title"
assert doc[1].args[0] == "😁" # smile node
assert doc[1].args[0].tag.isSome and doc[1].args[0].tag.get == "emoji" # Type annotation
assert doc[1].children[0].args[0] == "🙃" # smile node's upside-down child
assert doc[2].name == "!@#$@$%Q#$%~@!40"
assert doc[^1]["quux"] == false
doc[0].args[0].setString("New title")
# toKdlNode is a macro that facilitates the creation of `KdlNode`s, there's also toKdl (to create documents) and toKdlVal
doc[1].children[0] = toKdlNode: sunglasses("😎"[emoji], 3.14)
assert $doc[1].children[0] == "\"sunglasses\" (\"emoji\")\"😎\" 3.14"
assert doc[1].children[0].args[1].get(uint8) == 3u8 # Converts 3.14 into an uint8
doc[^1]["bar"].setTo(false) # Same as setBool(false)
writeFile("doc.kdl", doc)