mirror of
https://github.com/aNNiMON/Own-Programming-Language-Tutorial.git
synced 2024-09-20 00:34:20 +03:00
143 lines
2.5 KiB
Markdown
143 lines
2.5 KiB
Markdown
# OwnLang
|
|
|
|
OwnLang - dynamic functional programming language inspired by Scala and Python. Available for PC, Android and Java ME devices.
|
|
|
|
## Key features
|
|
|
|
#### Function values
|
|
|
|
Functions are values, so we can store them to variables for operating.
|
|
|
|
```scala
|
|
operations = {
|
|
"+" : def(a,b) = a+b,
|
|
"-" : def(a,b) = a-b,
|
|
"*" : def(a,b) = a*b,
|
|
"/" : ::division
|
|
}
|
|
def division(v1, v2) {
|
|
if (v2 == 0) return "error"
|
|
return v1 / v2
|
|
}
|
|
|
|
for operation : operations {
|
|
println operation(2, 3)
|
|
}
|
|
```
|
|
|
|
#### Pattern Matching
|
|
|
|
Pattern matching with value pattern, tuple pattern, list pattern and optional condition.
|
|
|
|
```scala
|
|
def factorial(n) = match n {
|
|
case 0: 1
|
|
case n if n < 0: 0
|
|
case _: n * factorial(n - 1)
|
|
}
|
|
|
|
def fizzbuzz(limit = 100) {
|
|
for i = 1, i <= limit, i++ {
|
|
println match [i % 3 == 0, i % 5 == 0] {
|
|
case (true, false): "Fizz"
|
|
case (false, true): "Buzz"
|
|
case (true, true): "FizzBuzz"
|
|
case _: i
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
#### Functional data operations
|
|
|
|
Operate data in functional style.
|
|
|
|
```scala
|
|
use "std"
|
|
use "functional"
|
|
|
|
nums = [1,2,3,4,5,6,7,8,9,10]
|
|
nums = filter(nums, def(x) = x % 2 == 0)
|
|
// Squares of even numbers
|
|
squares = map(nums, def(x) = x * x)
|
|
foreach(squares, ::echo)
|
|
// Sum of squares
|
|
sum = reduce(squares, 0, def(x, y) = x + y)
|
|
println "Sum: " + sum
|
|
```
|
|
|
|
#### Operator overloading
|
|
|
|
Why not?
|
|
|
|
```scala
|
|
use "std"
|
|
use "types"
|
|
use "math"
|
|
|
|
def `..`(a, b) = range(a, b - 1)
|
|
def `**`(a, b) = int(pow(a, b))
|
|
for y : 1 .. 10 {
|
|
println sprintf("2 ^ %d = %d", y, 2 ** y)
|
|
}
|
|
```
|
|
|
|
#### Network module
|
|
|
|
Easy async HTTP requests with `http` module.
|
|
|
|
```scala
|
|
use "std"
|
|
use "http"
|
|
use "functional"
|
|
|
|
// GET request
|
|
http("https://api.github.com/events", def(r) {
|
|
use "json"
|
|
events = jsondecode(r)
|
|
})
|
|
|
|
// POST request
|
|
http("http://jsonplaceholder.typicode.com/users", "POST", {
|
|
"name": "OwnLang",
|
|
"versionCode": 10
|
|
}, ::echo)
|
|
|
|
// PATCH request
|
|
http("http://jsonplaceholder.typicode.com/users/2", "PATCH", {"name": "Patched Name"}, ::patch_callback)
|
|
|
|
def patch_callback(v) {
|
|
println v
|
|
}
|
|
```
|
|
|
|
## Language specification
|
|
|
|
[Available on GitBook (English and Russian)](https://www.gitbook.com/book/annimon/ownlang/details)
|
|
|
|
[Examples](examples/)
|
|
|
|
|
|
## Build
|
|
|
|
Build using Gradle `./gradlew dist`
|
|
|
|
or Ant `ant clean pack`
|
|
|
|
or take a look to [latest release](https://github.com/aNNiMON/Own-Programming-Language-Tutorial/releases/latest) for binaries.
|
|
|
|
|
|
## Run
|
|
|
|
To run script use command
|
|
|
|
`java -jar OwnLang.jar -f input.own`
|
|
|
|
or
|
|
|
|
`java -jar OwnLang.jar < input.own`
|
|
|
|
|
|
## License
|
|
|
|
MIT - see [MIT licence information](LICENSE) |