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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
module Morpher
class Compiler
# Abstract target indepentand emitter
class Emitter
include AbstractType, Adamantium::Flat, NodeHelpers, Procto.call(:output)
extend NodeHelpers
# Return output of emitter
#
# @return [Object]
#
# @api private
#
abstract_method :output
# Return node
#
# @return [Node]
#
# @api private
#
abstract_method :node
private :node
private
# Return children
#
# @return [Array<AST::Node>]
#
# @api private
#
def children
node.children
end
# Assert number of child nodes
#
# @return [self]
# if assertion is fullfilled
#
# @raise [NodeError]
# otherwise
#
# @api private
#
def assert_children_amount(expected_amount)
actual_amount = children.length
fail Error::NodeChildren.new(node, expected_amount) unless actual_amount.equal?(expected_amount)
end
# Name children
#
# @return [undefined]
#
# @api private
#
# rubocop:disable MethodLength
#
def self.children(*names)
names.each_with_index do |name, index|
define_method(name) do
children.at(index)
end
private name
end
define_method(:named_children) do
names
end
private :named_children
define_method(:remaining_children) do
children.drop(names.length)
end
private :remaining_children
end
private_class_method :children
end # Emitter
end # Compiler
end # Morpher
|
