Module: Ruby2JS::Filter::JSX

Includes:
SEXP
Defined in:
lib/ruby2js/filter/jsx.rb

Instance Method Summary collapse

Methods included from SEXP

#S, #s

Instance Method Details

#on_block(node) ⇒ Object 



50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/ruby2js/filter/jsx.rb', line 50

def on_block(node)
  send, args, *block = node.children
  target, method, *_ = send.children
  while target!=nil and target.type==:send and target.children.length==2
    target, method = target.children
  end

  if target == nil and method.to_s.start_with? "_"
    if args.children.empty?
      if method == :_
        # Fragment
        if send.children.length == 2
          process send.updated(:xnode, ['', *process_all(block)])
        else
          process s(:xnode, 'React.Fragment', *send.children[2..-1],
            *process_all(block))
        end
      else
        # append block as a standalone proc
        process send.updated(nil, [*send.children, *process_all(block)])
      end
    else
      # iterate over Enumerable arguments if there are args present
      send = send.children
      return super if send.length < 3
      process s(:block, s(:send, *send[0..1], *send[3..-1]),
        s(:args), s(:block, s(:send, send[2], :map),
        *node.children[1..-1]))
    end
  else
    super
  end
end

#on_send(node) ⇒ Object 



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
 
# File 'lib/ruby2js/filter/jsx.rb', line 12

def on_send(node)
  target, method, *args = node.children

  if target == s(:const, nil, :Wunderbar)
    if [:debug, :info, :warn, :error, :fatal].include? method
      method = :error if method == :fatal
      return node.updated(nil, [s(:const, nil, :console), method, *args])
    end
  end

  stack = []
  while target!=nil and target.type==:send and target.children.length==2
    name = method.to_s
    if name.end_with? '!'
      stack << s(:hash, s(:pair, s(:sym, :id), s(:str, name[0..-2])))
    else
      stack << s(:hash, s(:pair, s(:sym, :class), s(:str, name)))
    end
    target, method = target.children
  end

  if target == nil and method.to_s.start_with? "_"
    S(:xnode, method.to_s[1..-1], *stack, *process_all(args))

  elsif method == :createElement and target == s(:const, nil, :React)
    if args.first.type == :str and \
      (args.length == 1 or %i(nil hash).include? args[1].type)
      attrs = (args[1]&.type != :nil && args[1]) || s(:hash)
      S(:xnode, args[0].children.first, attrs, *process_all(args[2..-1]))
    else
      super
    end

  else
    super
  end
end