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A simple quick-and-dirty poor man's object inspector. #2433

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A simple quick-and-dirty poor man's object inspector. #2433

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privat
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@privat privat commented May 11, 2017

Since Nit does not have introspection facilities, this module uses the serialization framework to inspect objects.
A plain webserver is used to present the inspection interface.
Feature:

To launch the object inspector, just call Serializable::http_inspect.

import serialization
Class A
  serialize
  var name: String
end
class B
  serialize
  var data: Int
  var a: A
end
var a = new A("my_a")
var b = new B(42, a)
b.http_inspect

Anti-features:

  • only serialized things from Serializable objects are exposed.
  • crappy UI (plain HTML 2.0)
  • crappy UI invocation (web server on localhost:8080 then xdg-open http://localhost:8080)
  • no clean terminaison (just Ctrl-C)

@privat
A simple quick-and-dirty poor man's object inspector.
ad8b774 
Signed-off-by: Jean Privat <jean@pryen.org>
@jcbrinfo
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jcbrinfo commented May 12, 2017 •
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crappy UI (plain HTML 2.0)

Then, where is the doctype (<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">)? Without doctype, it is “HTML 5 in quirks mode”. 😄

xymus
xymus approved these changes May 15, 2017
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That's a nice use of the serialization framework.

lib/http_inspector.nit

var response = new HttpResponse(200)
response.body = i.doc.write_to_string
return response
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I guess this is where you would shutdown nitcorn?

lib/http_inspector.nit
# All known objects
var map = new HashMap[String, Inspected]

# Returns an
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...

lib/http_inspector.nit
doc.add "</ul>\n"
end
if false then
else
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It would be cleaner with if true then 😉

@privat privat closed this Aug 15, 2024
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@privat @jcbrinfo @xymus