Nim language has great macros supports. Metaprogramming is interesting to play with. Let's look at this asynchronous web framework based on macros route.
https://github.com/planety/starlight
Hello world
import starlight
var app = newApp(newSettings())
proc hello(ctx: Context) {.async, get(app, "/hello").} =
resp "Hello world!"
app.run()
Vs flask
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
return 'Hello, World!'
Complex example
import starlight except loginPage
import logging
import htmlgen
func loginPage*(): string =
return html(form(action = "/login",
`method` = "post",
"Username: ", input(name = "username", `type` = "text"),
"Password: ", input(name = "password", `type` = "password"),
input(value = "login", `type` = "submit")),
xmlns = "http://www.w3.org/1999/xhtml")
var app = newApp(newSettings())
proc hello*(ctx: Context) {.async,
get(app, "/"),
post(app, "/"),
get(app, "/hello")
.} =
resp "<h1>Hello, Prologue!</h1>"
proc home*(ctx: Context) {.async, route(app, "/home", HttpGet).} =
resp "<h1>Home</h1>"
proc helloName*(ctx: Context) {.async, get(app, "/hello/{name}").} =
resp "<h1>Hello, " & ctx.getPathParams("name", "Prologue!") & "</h1>"
proc redirectHome*(ctx: Context) {.async, route(app, "/redirect").} =
resp redirect("/home")
proc loginGet*(ctx: Context) {.async, route(app, "/loginget").} =
resp loginGetPage()
proc doLoginGet*(ctx: Context) {.async, route(app, "/loginpage", [HttpGet, HttpPost]).} =
resp redirect("/hello/Nim")
proc login*(ctx: Context) {.async, get(app, "/login").} =
resp loginPage()
proc doLogin*(ctx: Context) {.async, post(app, "/login").} =
resp redirect("/hello/Nim")
app.run()
Top comments (1)
Nim could really use a decorator syntax seems...