Own-Programming-Language-Tutorial/program.own

use math, std, functional

word = 2 + 2
word2 = PI + word
str = "a" * 5 + "ba" * 7 + "\n"
println str * "3" * 2
println "word = " + word
println "word2 = " + word2
println "1" > "abc"
if (1 <= 2) println "1 = 1"
else println "1 != 1"
if (40 < 50 || 50 > 60) {
    println "true1"
    println "true2"
    i = 0
    println "do while"
    do {
       println "i = " + i
       i = i + 1
    } while (i < 10)
    i = 0
    println "while"
    while (i < 10) {
        println "i = " + i + sin(i)
        i = i + 1
    }
    println "for"
    for i = 0, i < 10, i = i + 1 {
        println "i = " + i
    }
}
else print "false"

print "sin(PI) = " + sin(PI/2)
echo(1,2,3,"4","5","text",sin(0),cos(0),sin(PI),cos(PI),PI)

a = "print"
print a

def name(a,b) {
   echo("a = ", a, " b = ", b)
}

def sum(a,b) {
   a = -60
   return a+b
}
name(1,"text")
print sum(10, 15)

print a + "\n"

arr = [1, "text", sum(10, 15), [], ["text", [90, [7 + 6, [50]]]]]
println arr + "\n"
arr[0] = arr[0] + 1000 + arr[2]
print arr + "\n"
print arr[4][1] + "\n"
arr[4][1] = "text"
println arr[4][1]

print "\n\n"
array = newarray(2, 2, 2, 2)
println array

add = def(a,b) = a+b
sub = def(a,b) = a-b
mul = def(a,b) = a*b
div = def(a,b) = a/b
cube = def(x) = x*mul(x, x)
print "\n\n"
println mul(8, 5)
println cube(2)

functions = [add, sub, mul, div]
def function(f, a, b) = f(a, b)
for i = 0, i < 4, i = i + 1 {
    println functions[i]
    println function(functions[i], 6, 3)
}

// map
map = {"+" : add, "-" : sub, "*" : mul, "/" : div}
map["%"] = def(x,y) = x % y
map["pow"] = def(x,y) = pow(x, y)
println map["+"]
println function(map["+"], 4, 5)
foreach(map, def(op, func) = echo (4, op, 5, "=", func(4,5)))
foreach(arr, ::echo)

arr1 = [1,2,3]
arr1 = arr1 :: 4
arr2 = [5,6,7]
println arr1
println arr1 << arr2

for op, func : map {
  echo (4, op, 5, "=", func(4,5))
}

for v : arr1 print "" + v + ", "
print "\n"
for (v : arr1 << arr2) print "" + v + ", "
print "\n"
for v : [1,2,3,4,5,6,7,8,9] print "" + v + ", "

use types
println typeof(1)
println typeof("1")
println typeof(arr1)
println typeof({})
println typeof(add)

println typeof(number("1"))
println typeof(string(1))

thread(::inthread)
def inthread() = echo("this is a thread")
thread(def (str) { println str }, "this is a thread with arguments")

println "functional"
nums = [1,2,3,4,5,6,7,8,9,10]
nums = filter(nums, def(x) = x % 2 == 0)
squares = map(nums, def(x) = x * x)
foreach(squares, ::echo)
println "Sum: " + reduce(squares, 0, def(x, y) = x + y)

nums = [[1, 2], [3], [], [4, 5]]
nums = flatmap(nums, IDENTITY)
println "flatmap"
foreach(nums, ::echo)
println "sort"
foreach(sort(nums, def(a,b) = b - a), ::echo)

use http

/*http("http://jsonplaceholder.typicode.com/users", "POST", {"name": "OwnLang", "versionCode": 10}, def(v) {
  println "Added: " + v
  http("http://jsonplaceholder.typicode.com/users/2", "PATCH", {"name": "Patched Name"}, ::http_get_demo)
})
def http_get_demo(v) {
  println "Updated: " + v
  http("http://jsonplaceholder.typicode.com/users", ::echo)
}*/

use json
println "json"
println jsonencode({
  "name": "JSON Example",
  "version": 1,
  "arrayData": [
     1, 2, 3, 4
  ],
  "objectData": {
    "key": "value",
    10: "1000"
  }
})

println ""


def fact1(n) = match n {
  case 0: 1
  case n: n * fact1(n - 1)
}
def fact2(n) = match n {
  case n if n == 0: 1
  case _: n * fact2(n - 1)
}

println fact1(6)
println fact2(6)

functions = {
  "add": def(a, b) = a + b,
  "sub": def(a, b) = a - b,
  "mul": def(a, b) = a * b,
  "div": def(a, b) = a / b
}

println functions.add(2, functions.mul(2, 2))

println split("1/2/3/4/5/6", "/")
println join(nums, ", ")
println join(nums, "|", "/")
println join(nums, ", ", "[", "]")

// Destructuring assignment
arr = ["a", "b", "c"]
extract(var1, var2, var3) = arr
echo(var1, var2, var3)
// Swap
extract(var2, var1) = [var1, var2]
echo(var1, var2)

extract(, , var4) = arr
println var4

array1 = [[1, 2], [3], [4, 5], [6]]
println array1[0][1]
object1 = {"arr": array1}
println object1.arr
println object1.arr[0][1]
object1.arr[0][1] = "str"
println object1.arr[0][1]

println arrayRecursive([1, 2, 3, 4, 5, 6, 7])
def arrayRecursive(arr) = match arr {
  case [head :: tail]: "[" + head + ", " + arrayRecursive(tail) + "]"
  case []: "[]"
  case last: "[" + last + ", []]"
}

def funcWithOptionalArgs(str, count = 5, prefix = "<", suffix = ">") = prefix + (str * count) + suffix

println funcWithOptionalArgs("*")
println funcWithOptionalArgs("+", 2)
println funcWithOptionalArgs("*", 10, "<!")

v1 = v2 = v3 = v4 = 5
echo(v1, v2, v3, v4)

x = 5
x += 10
x *= 2
println x

xarr = [0, 5, 2]
xarr[0] += xarr[1]
xarr[0] *= xarr[2]
xarr[0]++
println xarr[0]

`extended word variable` = 9
println `extended word variable`

// Operator overloading
def `::`(v1, v2) = string(v1) + string(v2)
println 1 :: 2 :: 3

println "\u042a"

use date
d = newDate();
println d
println formatDate(d)
println formatDate(d, newFormat("yyyy-MM-dd HH:mm:ss, EEEE"))
println parseDate("2016/05/10", newFormat("yyyy/MM/dd"))
println toTimestamp(d)
println newDate(toTimestamp(d) - 100000)

try(def() = try + 2)
println try(def() = try(), def(type, message) = sprintf("Error handled:\ntype: %s\nmessage: %s", type, message))