Add sample Crystal file

tests/syntax-tests/source/Crystal/test.cr

@@ -0,0 +1,117 @@
+# An example file to test Crystal syntax highlighting in bat
+my_var : Nil = nil
+my_var_also : Int32 = 42
+my_other_var = 4.0
+another_float = 4.0_f32
+another_float_2 = 4e10
+another_float_3 = -0.5
+big_one = 1_000_000.111_111e-4
+ternary = 1 > 2 : 3 ? 4
+my_symbol = :ThisOne?
+my_other_symbol = :No_That_One!
+plus = :+
+minus = :-
+my_string : String = "this string right here, with an interpolated value of #{my_var_also}"
+my_array : Array(Int32) = [1,2,3,4]
+my_tuple : Tuple(Int32, Int32, Int32, Int32) = {1,2,3,4}
+my_named_tuple : NamedTuple(one: Int32, two: Int32) = {"one": 1, "two": 2}
+my_hash : Hash(String, Int32) = {"one" => 1, "two" => 2}
+my_proc : Proc(Int32, Int32) = ->(x : Int32){ x * x}
+my_other_proc : Proc(String) = ->{ "Wow, neat!" }
+puts my_string
+puts(my_string)
+
+enum Colors
+  Red
+  Green
+  Blue
+end
+
+class Greeter
+  @instance_field = Colors::Red
+  @@class_field = Colors::Green
+
+  def initialize(@name = "world")
+  end
+
+  def greet 
+    puts "Hello, #{@name}"
+  end
+
+  def render_greeting : String
+    "Hello, #{@name}"
+  end
+
+  def with_greeting
+    yield render_greeting
+  end
+
+  def is_color_default?
+    @instance_field == @@class_field
+  end
+
+  def self.greet_static(name : String) : Unit
+    puts "Hello, #{name}"
+  end
+end
+
+greeter = Greeter.new("bat")
+greeter.with_greeting do |greeting|
+  puts greeting
+end
+
+puts <<-EOF
+  this is a heredoc and it has a value in it of #{greeter.render_greeting}!
+EOF
+
+# This is a command:
+`echo yay!`
+$?.success?
+
+my_color = Colors::Red
+
+puts 
+  case my_color
+  when Colors::Red, .red?
+    "Red"
+  when Colors::Green, .green?
+    "Green"
+  when Colors::Blue, .blue?
+    "Blue"
+  else
+    "I dunno, man. Chartreuse? Maroon?"
+  end
+
+class MyGenericClass(T)
+  def initialize(@wrapped_value : T)
+  end
+
+  def get
+    return @wrapped_value
+  end
+end
+
+
+def do_stuff_with_range(r : Range(Int|String))
+  return if r.empty?
+  return unless !(r.empty?)
+  r.each do |item|
+    if /e/.match(item.to_s)
+      puts "#{item} contains the letter e!"
+    elsif item.to_s.empty?
+      break
+    else
+      next # this is unnecessary, but whatever
+    end
+  end
+end
+
+
+macro print_range(range)
+  {% for i in range %}
+    puts {{i.id}}
+  {% end %}
+end
+
+print_range(1..3)
+print_range(1...3)