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