Class: Bade::Generator

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

Constant Summary collapse

BUFF_NAME = 
:__buff
MIXINS_NAME = 
:__mixins
NEW_LINE_NAME = 
:__new_line
CURRENT_INDENT_NAME = 
:__indent
BASE_INDENT_NAME = 
:__base_indent
DEFAULT_BLOCK_NAME = 
'default_block'.freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.document_to_lambda_string(document) ⇒ String

Parameters:

  • document (Document)

Returns:



21
22
23
24
 
# File 'lib/bade/generator.rb', line 21

def self.document_to_lambda_string(document)
  generator = new
  generator.generate_lambda_string(document)
end

Instance Method Details

#block_definition(block_node) ⇒ nil

Generates code for definition of block

Parameters:

  • block_node (MixinCallBlockNode)

Returns:

  • (nil) 


304
305
306
307
308
309
310
311
312
313
314
315
316
 
# File 'lib/bade/generator.rb', line 304

def block_definition(block_node)
  buff_code "__blocks['#{block_node.name}'] = __create_block('#{block_node.name}') do"

  code_indent do
    buff_code '__buffs_push()'

    visit_node_children(block_node)

    buff_code '__buffs_pop()'
  end

  buff_code 'end'
end

#block_name_declaration(block_name) ⇒ nil

Generates code for block variables declaration in mixin definition

Parameters:

Returns:

  • (nil) 


324
325
326
 
# File 'lib/bade/generator.rb', line 324

def block_name_declaration(block_name)
  buff_code "#{block_name} = __blocks.delete('#{block_name}') { __create_block('#{block_name}') }"
end

#blocks_name_declaration(mixin_node) ⇒ nil

Parameters:

  • mixin_node (MixinDeclarationNode)

Returns:

  • (nil) 


332
333
334
335
336
337
338
 
# File 'lib/bade/generator.rb', line 332

def blocks_name_declaration(mixin_node)
  block_name_declaration(DEFAULT_BLOCK_NAME)

  mixin_node.params.select { |n| n.type == :mixin_block_param }.each do |param|
    block_name_declaration(param.value)
  end
end

#buff_code(text) ⇒ Object 



76
77
78
 
# File 'lib/bade/generator.rb', line 76

def buff_code(text)
  @buff << '  ' * @code_indent + text
end

#buff_print_static_text(text) ⇒ Object

Parameters:



67
68
69
 
# File 'lib/bade/generator.rb', line 67

def buff_print_static_text(text)
  buff_print_value("'#{text.gsub("'", "\\'")}'") unless text.empty?
end

#buff_print_text(text, indent: false, new_line: false) ⇒ Object

Parameters:



61
62
63
 
# File 'lib/bade/generator.rb', line 61

def buff_print_text(text, indent: false, new_line: false) # rubocop:disable Lint/UnusedMethodArgument
  buff_print_value("%Q{#{text}}") unless text.empty?
end

#buff_print_value(value) ⇒ Object 



71
72
73
74
 
# File 'lib/bade/generator.rb', line 71

def buff_print_value(value)
  # buff_code %Q{#{BUFF_NAME} << #{CURRENT_INDENT_NAME}} if indent
  buff_code("#{BUFF_NAME} << #{value}")
end

#code_indent(plus = 1) ⇒ nil

Method for indenting generated code, indent is raised only in passed block

Returns:

  • (nil) 


249
250
251
252
253
 
# File 'lib/bade/generator.rb', line 249

def code_indent(plus = 1)
  @code_indent += plus
  yield
  @code_indent -= plus
end

#escape_double_quotes!(str) ⇒ Void

Parameters:

Returns:

  • (Void) 


362
363
364
 
# File 'lib/bade/generator.rb', line 362

def escape_double_quotes!(str)
  str.gsub!(/"/, '\"')
end

#formatted_attributes(tag_node) ⇒ String

Returns formatted attributes.

Parameters:

  • tag_node (TagNode)

Returns:

  • (String) —

    formatted attributes



229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
 
# File 'lib/bade/generator.rb', line 229

def formatted_attributes(tag_node)
  all_attributes = Hash.new { |hash, key| hash[key] = [] }
  xml_attributes = []

  tag_node.attributes.each do |attr|
    xml_attributes << attr.name unless all_attributes.include?(attr.name)

    all_attributes[attr.name] << attr.value
  end

  xml_attributes.map do |attr_name|
    joined = all_attributes[attr_name].join('), (')
    "\#{__tag_render_attribute('#{attr_name}', (#{joined}))}"
  end.join
end

#formatted_mixin_params(mixin_node) ⇒ String

Returns formatted params.

Parameters:

  • mixin_node (MixinCommonNode)

Returns:

  • (String) —

    formatted params



259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
 
# File 'lib/bade/generator.rb', line 259

def formatted_mixin_params(mixin_node)
  params = mixin_node.params
  result = []

  if mixin_node.type == :mixin_call
    blocks = mixin_node.blocks

    other_children = (mixin_node.children - mixin_node.blocks - mixin_node.params)
    if other_children.count { |n| n.type != :newline } > 0
      def_block_node = AST::NodeRegistrator.create(:mixin_block, mixin_node.lineno)
      def_block_node.name = DEFAULT_BLOCK_NAME
      def_block_node.children = other_children

      blocks << def_block_node
    end

    if !blocks.empty?
      buff_code '__blocks = {}'

      blocks.each do |block|
        block_definition(block)
      end

      result << '__blocks.dup'
    else
      result << '{}'
    end
  elsif mixin_node.type == :mixin_decl
    result << '__blocks'
  end


  # normal params
  result += params.select { |n| n.type == :mixin_param }.map(&:value)
  result += params.select { |n| n.type == :mixin_key_param }.map { |param| "#{param.name}: #{param.value}" }

  result.join(', ')
end

#generate_lambda_string(document) ⇒ String

Returns string to parse with Ruby.

Parameters:

Returns:

  • (String) —

    string to parse with Ruby



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
 
# File 'lib/bade/generator.rb', line 30

def generate_lambda_string(document)
  @document = document
  @buff = []
  @indent = 0
  @code_indent = 0

  buff_code '# frozen_string_literal: true' # so it can be faster on Ruby 2.3+
  buff_code ''
  buff_code "lambda do |#{NEW_LINE_NAME}: \"\\n\", #{BASE_INDENT_NAME}: '  '|"

  code_indent do
    buff_code "self.#{NEW_LINE_NAME} = #{NEW_LINE_NAME}"
    buff_code "self.#{BASE_INDENT_NAME} = #{BASE_INDENT_NAME}"

    visit_document(document)

    buff_code "output = #{BUFF_NAME}.join"
    buff_code 'self.__reset'
    buff_code 'output'
  end

  buff_code 'end'


  @document = nil

  @buff.join("\n")
end

#visit_block_decl(current_node) ⇒ nil

Parameters:

  • current_node (MixinDeclarationNode)

Returns:

  • (nil) 


344
345
346
347
348
349
350
351
352
353
354
 
# File 'lib/bade/generator.rb', line 344

def visit_block_decl(current_node)
  params = formatted_mixin_params(current_node)
  buff_code "#{MIXINS_NAME}['#{current_node.name}'] = __create_mixin('#{current_node.name}', &lambda { |#{params}|"

  code_indent do
    blocks_name_declaration(current_node)
    visit_nodes(current_node.children - current_node.params)
  end

  buff_code '})'
end

#visit_document(document) ⇒ Object

Parameters:

  • document (Bade::Document) 


83
84
85
86
87
88
89
90
91
 
# File 'lib/bade/generator.rb', line 83

def visit_document(document)
  document.sub_documents.each do |sub_document|
    visit_document(sub_document)
  end

  buff_code("# ----- start file #{document.file_path}") unless document.file_path.nil?
  visit_node(document.root)
  buff_code("# ----- end file #{document.file_path}") unless document.file_path.nil?
end

#visit_node(current_node) ⇒ Object

Parameters:

  • current_node (Node) 


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
167
 
# File 'lib/bade/generator.rb', line 109

def visit_node(current_node)
  case current_node.type
  when :root
    visit_node_children(current_node)

  when :static_text
    buff_print_static_text(current_node.value)

  when :tag
    visit_tag(current_node)

  when :code
    buff_code(current_node.value)

  when :html_comment
    buff_print_text '<!-- '
    visit_node_children(current_node)
    buff_print_text ' -->'

  when :comment
    comment_text = '#' + current_node.children.map(&:value).join("\n#")
    buff_code(comment_text)

  when :doctype
    buff_print_text current_node.xml_output

  when :mixin_decl
    visit_block_decl(current_node)

  when :mixin_call
    params = formatted_mixin_params(current_node)
    buff_code "#{MIXINS_NAME}['#{current_node.name}'].call!(#{params})"

  when :output
    data = current_node.value
    output_code = if current_node.escaped
                    "\#{__html_escaped(#{data})}"
                  else
                    "\#{#{data}}"
                  end
    buff_print_text output_code

  when :newline
    # buff_print_value(NEW_LINE_NAME)

  when :import
    base_path = File.expand_path(current_node.value, File.dirname(@document.file_path))
    load_path = if base_path.end_with?('.rb') && File.exist?(base_path)
                  base_path
                elsif File.exist?("#{base_path}.rb")
                  "#{base_path}.rb"
                end

    buff_code "load('#{load_path}')" unless load_path.nil?

  else
    raise "Unknown type #{current_node.type}"
  end
end

#visit_node_children(current_node) ⇒ Object

Parameters:

  • current_node (Node) 


95
96
97
 
# File 'lib/bade/generator.rb', line 95

def visit_node_children(current_node)
  visit_nodes(current_node.children)
end

#visit_nodes(nodes) ⇒ Object

Parameters:



101
102
103
104
105
 
# File 'lib/bade/generator.rb', line 101

def visit_nodes(nodes)
  nodes.each do |node|
    visit_node(node)
  end
end

#visit_tag(current_node) ⇒ nil

Parameters:

  • current_node (TagNode)

Returns:

  • (nil) 


173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
 
# File 'lib/bade/generator.rb', line 173

def visit_tag(current_node)
  attributes = formatted_attributes(current_node)
  children_wo_attributes = (current_node.children - current_node.attributes)

  text = "<#{current_node.name}"

  text += attributes.to_s unless attributes.empty?

  other_than_new_lines = children_wo_attributes.any? { |n| n.type != :newline }

  text += if other_than_new_lines
            '>'
          else
            '/>'
          end

  conditional_nodes = current_node.children.select { |n| n.type == :output && n.conditional }

  unless conditional_nodes.empty?
    buff_code "if (#{conditional_nodes.map(&:value).join(') && (')})"

    @code_indent += 1
  end

  buff_print_text(text, new_line: true, indent: true)

  if other_than_new_lines
    last_node = children_wo_attributes.last
    is_last_newline = !last_node.nil? && last_node.type == :newline
    nodes = if is_last_newline
              children_wo_attributes[0...-1]
            else
              children_wo_attributes
            end

    code_indent do
      visit_nodes(nodes)
    end

    buff_print_text("</#{current_node.name}>", new_line: true, indent: true)

    # print new line after the tag
    visit_node(last_node) if is_last_newline
  end

  unless conditional_nodes.empty? # rubocop:disable Style/GuardClause
    @code_indent -= 1

    buff_code 'end'
  end
end