Class: Bade::AST::StringSerializer

Inherits:
Object
  • Object
show all
Defined in:
lib/bade/ast/string_serializer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root) ⇒ StringSerializer 



13
14
15
 
# File 'lib/bade/ast/string_serializer.rb', line 13

def initialize(root)
  @root = root
end

Instance Attribute Details

#root ⇒ AST::Node, AST::Document (readonly) 



9
10
11
 
# File 'lib/bade/ast/string_serializer.rb', line 9

def root
  @root
end

Instance Method Details

#node_to_s(node, level) ⇒ String 



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
 
# File 'lib/bade/ast/string_serializer.rb', line 34

def node_to_s(node, level)
  type_s = node.type.inspect
  indent = '  ' * level

  children_s = ''
  if node.children.count > 0
    children_s = "\n#{node.children.map { |n| node_to_s(n, level + 1) }.join("\n")}\n#{indent}"
  end

  other = ''

  case node
  when TagNode, MixinCommonNode
    other = node.name
  when KeyValueNode
    other = "#{node.name}:#{node.value}"
  when ValueNode, StaticTextNode
    escaped_sign = if node.escaped
                     '& '
                   elsif node.escaped.nil?
                     '&(nil) '
                   else
                     ''
                   end
    other = "#{escaped_sign}#{node.value}"
  when Node
    # nothing
  else
    raise "Unknown node class #{node.class} of type #{node.type} for serializing"
  end

  other = " #{other}" if other && !other.empty?

  "#{indent}(#{type_s}#{other}#{children_s})"
end

#to_s ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/bade/ast/string_serializer.rb', line 17

def to_s
  case root
  when Node
    node_to_s(root, 0)
  when Document
    node_to_s(root.root, 0)
  else
    msg = "Root attribute passed into initializer must be subclass of #{Node} or #{Document}, is #{root.class}!"
    raise AttributeError, msg
  end
end