120 lines
2.6 KiB
HTML
120 lines
2.6 KiB
HTML
|
<!doctype html>
|
||
|
|
|
||
|
|
<title>CodeMirror: Crystal mode</title>
|
||
|
|
<meta charset="utf-8"/>
|
||
|
|
<link rel=stylesheet href="../../doc/docs.css">
|
||
|
|
|
||
|
|
<link rel="stylesheet" href="../../lib/codemirror.css">
|
||
|
|
<script src="../../lib/codemirror.js"></script>
|
||
|
|
<script src="../../addon/edit/matchbrackets.js"></script>
|
||
|
|
<script src="crystal.js"></script>
|
||
|
|
<style>
|
||
|
|
.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}
|
||
|
|
.cm-s-default span.cm-arrow { color: red; }
|
||
|
|
</style>
|
||
|
|
|
||
|
|
<div id=nav>
|
||
|
|
<a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><a href="../../index.html">Home</a>
|
||
|
|
<li><a href="../../doc/manual.html">Manual</a>
|
||
|
|
<li><a href="https://github.com/codemirror/codemirror">Code</a>
|
||
|
|
</ul>
|
||
|
|
<ul>
|
||
|
|
<li><a href="../index.html">Language modes</a>
|
||
|
|
<li><a class=active href="#">Crystal</a>
|
||
|
|
</ul>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<article>
|
||
|
|
<h2>Crystal mode</h2>
|
||
|
|
<form><textarea id="code" name="code">
|
||
|
|
# Features of Crystal
|
||
|
|
# - Ruby-inspired syntax.
|
||
|
|
# - Statically type-checked but without having to specify the type of variables or method arguments.
|
||
|
|
# - Be able to call C code by writing bindings to it in Crystal.
|
||
|
|
# - Have compile-time evaluation and generation of code, to avoid boilerplate code.
|
||
|
|
# - Compile to efficient native code.
|
||
|
|
|
||
|
|
# A very basic HTTP server
|
||
|
|
require "http/server"
|
||
|
|
|
||
|
|
server = HTTP::Server.new(8080) do |request|
|
||
|
|
HTTP::Response.ok "text/plain", "Hello world, got #{request.path}!"
|
||
|
|
end
|
||
|
|
|
||
|
|
puts "Listening on http://0.0.0.0:8080"
|
||
|
|
server.listen
|
||
|
|
|
||
|
|
module Foo
|
||
|
|
def initialize(@foo); end
|
||
|
|
|
||
|
|
abstract def abstract_method : String
|
||
|
|
|
||
|
|
@[AlwaysInline]
|
||
|
|
def with_foofoo
|
||
|
|
with Foo.new(self) yield
|
||
|
|
end
|
||
|
|
|
||
|
|
struct Foo
|
||
|
|
def initialize(@foo); end
|
||
|
|
|
||
|
|
def hello_world
|
||
|
|
@foo.abstract_method
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
class Bar
|
||
|
|
include Foo
|
||
|
|
|
||
|
|
@@foobar = 12345
|
||
|
|
|
||
|
|
def initialize(@bar)
|
||
|
|
super(@bar.not_nil! + 100)
|
||
|
|
end
|
||
|
|
|
||
|
|
macro alias_method(name, method)
|
||
|
|
def {{ name }}(*args)
|
||
|
|
{{ method }}(*args)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def a_method
|
||
|
|
"Hello, World"
|
||
|
|
end
|
||
|
|
|
||
|
|
alias_method abstract_method, a_method
|
||
|
|
|
||
|
|
macro def show_instance_vars : Nil
|
||
|
|
{% for var in @type.instance_vars %}
|
||
|
|
puts "@{{ var }} = #{ @{{ var }} }"
|
||
|
|
{% end %}
|
||
|
|
nil
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
class Baz < Bar; end
|
||
|
|
|
||
|
|
lib LibC
|
||
|
|
fun c_puts = "puts"(str : Char*) : Int
|
||
|
|
end
|
||
|
|
|
||
|
|
$baz = Baz.new(100)
|
||
|
|
$baz.show_instance_vars
|
||
|
|
$baz.with_foofoo do
|
||
|
|
LibC.c_puts hello_world
|
||
|
|
end
|
||
|
|
</textarea></form>
|
||
|
|
<script>
|
||
|
|
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
|
||
|
|
mode: "text/x-crystal",
|
||
|
|
matchBrackets: true,
|
||
|
|
indentUnit: 2
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<p><strong>MIME types defined:</strong> <code>text/x-crystal</code>.</p>
|
||
|
|
</article>
|