Class: SyntaxTree::XML::Format

Inherits:
Visitor
  • Object
show all
Defined in:
lib/syntax_tree/xml/format.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Visitor

#visit

Constructor Details

#initialize(q) ⇒ Format

Returns a new instance of Format.



8
9
10
 
# File 'lib/syntax_tree/xml/format.rb', line 8

def initialize(q)
  @q = q
end

Instance Attribute Details

#q ⇒ Object (readonly)

Returns the value of attribute q.



6
7
8
 
# File 'lib/syntax_tree/xml/format.rb', line 6

def q
  @q
end

Instance Method Details

#visit_attribute(node) ⇒ Object

Visit an Attribute node.



203
204
205
206
207
208
209
 
# File 'lib/syntax_tree/xml/format.rb', line 203

def visit_attribute(node)
  q.group do
    visit(node.key)
    visit(node.equals)
    visit(node.value)
  end
end

#visit_char_data(node) ⇒ Object

Visit a CharData node.



212
213
214
215
216
217
218
 
# File 'lib/syntax_tree/xml/format.rb', line 212

def visit_char_data(node)
  lines = node.value.value.strip.split("\n")

  q.seplist(lines, -> { q.breakable(indent: false) }) do |line|
    q.text(line)
  end
end

#visit_closing_tag(node) ⇒ Object

Visit an Element::ClosingTag node.



189
190
191
192
193
194
195
 
# File 'lib/syntax_tree/xml/format.rb', line 189

def visit_closing_tag(node)
  q.group do
    visit(node.opening)
    visit(node.name)
    visit(node.closing)
  end
end

#visit_doctype(node) ⇒ Object

Visit a Doctype node.



59
60
61
62
63
64
65
66
67
68
69
70
71
72
 
# File 'lib/syntax_tree/xml/format.rb', line 59

def visit_doctype(node)
  q.group do
    visit(node.opening)
    q.text(" ")
    visit(node.name)

    if node.external_id
      q.text(" ")
      visit(node.external_id)
    end

    visit(node.closing)
  end
end

#visit_document(node) ⇒ Object

Visit a Document node.



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/syntax_tree/xml/format.rb', line 18

def visit_document(node)
  child_nodes =
    node
      .child_nodes
      .select do |child_node|
        case child_node
        in Misc[value: Token[type: :whitespace]]
          false
        else
          true
        end
      end
      .sort_by(&:location)

  q.seplist(child_nodes, -> { q.breakable(force: true) }) do |child_node|
    visit(child_node)
  end

  q.breakable(force: true)
end

#visit_element(node) ⇒ Object

Visit an Element node.



96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
 
# File 'lib/syntax_tree/xml/format.rb', line 96

def visit_element(node)
  inner_nodes =
    node.content&.select do |child_node|
      case child_node
      in CharData[value: Token[type: :whitespace]]
        false
      in CharData[value: Token[value:]] if value.strip.empty?
        false
      else
        true
      end
    end

  case inner_nodes
  in nil
    visit(node.opening_tag)
  in []
    visit(
      Element::OpeningTag.new(
        opening: node.opening_tag.opening,
        name: node.opening_tag.name,
        attributes: node.opening_tag.attributes,
        closing:
          Token.new(
            type: :close,
            value: "/>",
            location: node.opening_tag.closing.location
          ),
        location: node.opening_tag.location
      )
    )
  in [CharData[value: Token[type: :text, value:]]]
    q.group do
      visit(node.opening_tag)
      q.indent do
        q.breakable("")
        format_text(q, value)
      end

      q.breakable("")
      visit(node.closing_tag)
    end
  else
    q.group do
      visit(node.opening_tag)
      q.indent do
        q.breakable("")

        inner_nodes.each_with_index do |child_node, index|
          if index != 0
            q.breakable(force: true)

            end_line = inner_nodes[index - 1].location.end_line
            start_line = child_node.location.start_line
            q.breakable(force: true) if (start_line - end_line) >= 2
          end

          case child_node
          in CharData[value: Token[type: :text, value:]]
            format_text(q, value)
          else
            visit(child_node)
          end
        end
      end

      q.breakable(force: true)
      visit(node.closing_tag)
    end
  end
end

#visit_external_id(node) ⇒ Object

Visit an ExternalID node.



75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
# File 'lib/syntax_tree/xml/format.rb', line 75

def visit_external_id(node)
  q.group do
    q.group do
      visit(node.type)

      if node.public_id
        q.indent do
          q.breakable
          visit(node.public_id)
        end
      end
    end

    q.indent do
      q.breakable
      visit(node.system_id)
    end
  end
end

#visit_misc(node) ⇒ Object

Visit a Misc node.



221
222
223
 
# File 'lib/syntax_tree/xml/format.rb', line 221

def visit_misc(node)
  visit(node.value)
end

#visit_opening_tag(node) ⇒ Object

Visit an Element::OpeningTag node.



169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
 
# File 'lib/syntax_tree/xml/format.rb', line 169

def visit_opening_tag(node)
  q.group do
    visit(node.opening)
    visit(node.name)

    if node.attributes.any?
      q.indent do
        q.breakable
        q.seplist(node.attributes, -> { q.breakable }) do |child_node|
          visit(child_node)
        end
      end
    end

    q.breakable(node.closing.value == "/>" ? " " : "")
    visit(node.closing)
  end
end

#visit_prolog(node) ⇒ Object

Visit a Prolog node.



40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
 
# File 'lib/syntax_tree/xml/format.rb', line 40

def visit_prolog(node)
  q.group do
    visit(node.opening)

    if node.attributes.any?
      q.indent do
        q.breakable
        q.seplist(node.attributes, -> { q.breakable }) do |child_node|
          visit(child_node)
        end
      end
    end

    q.breakable("")
    visit(node.closing)
  end
end

#visit_reference(node) ⇒ Object

Visit a Reference node.



198
199
200
 
# File 'lib/syntax_tree/xml/format.rb', line 198

def visit_reference(node)
  visit(node.value)
end

#visit_token(node) ⇒ Object

Visit a Token node.



13
14
15
 
# File 'lib/syntax_tree/xml/format.rb', line 13

def visit_token(node)
  q.text(node.value.strip)
end