blob: b81a34002abc46f4633dc75ce19b8ca1469a7813 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
require 'active_support/core_ext/string/output_safety'
module ActionView
class OutputFlow
attr_reader :content
def initialize
@content = Hash.new { |h,k| h[k] = ActiveSupport::SafeBuffer.new }
end
def get(key)
@content[key]
end
def set(key, value)
@content[key] = (ActiveSupport::SafeBuffer.new << value)
end
def append(key, value)
@content[key] << value
end
end
class StreamingFlow < OutputFlow
def initialize(flow, fiber)
@content = flow.content
@fiber = fiber
@root = Fiber.current.object_id
end
# Try to get an stored content. If the content
# is not available and we are inside the layout
# fiber, we set that we are waiting for the given
# key and yield.
def get(key)
return super if @content.key?(key)
if inside_fiber?
begin
@waiting_for = key
Fiber.yield
ensure
@waiting_for = nil
end
end
super
end
# Set the contents for the given key. This is called
# by provides and resumes back to the fiber if it is
# the key it is waiting for.
def set(key, value)
super
@fiber.resume if @waiting_for == key
end
private
def inside_fiber?
Fiber.current.object_id != @root
end
end
end
|
