Class: Bade::RubyGenerator

Inherits:
Generator show all
Defined in:
lib/bade/generator/ruby_generator.rb

Constant Summary collapse

BUFF_NAME = 
'__buff'
MIXINS_NAME = 
'__mixins'
START_STRING = 
"
lambda {
  #{BUFF_NAME} = []
  #{MIXINS_NAME} = Hash.new { |hash, key| raise \"Undefined mixin '\#{key}'\" }
"
END_STRING = 
"
  #{BUFF_NAME}.join
}"

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Generator

node_to_lambda

Constructor Details

#initialize(new_line_string, indent_string) ⇒ RubyGenerator

Returns a new instance of RubyGenerator.

Parameters:



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# File 'lib/bade/generator/ruby_generator.rb', line 43

def initialize(new_line_string, indent_string)
  @new_line_string = new_line_string
  @indent_string = indent_string
end

Class Method Details

.document_to_lambda(document, new_line: "\n", indent: "\t", filename: '') ⇒ Proc

Parameters:

Returns:

  • (Proc) 


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# File 'lib/bade/generator/ruby_generator.rb', line 24

def self.document_to_lambda(document, new_line: "\n", indent: "\t", filename: '')
  generator = self.new(new_line, indent)
  generator.generate_lambda(document, filename)
end

.document_to_lambda_string(document, new_line: "\n", indent: "\t", filename: '') ⇒ String

Parameters:

Returns:



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# File 'lib/bade/generator/ruby_generator.rb', line 33

def self.document_to_lambda_string(document, new_line: "\n", indent: "\t", filename: '')
  generator = self.new(new_line, indent)
  generator.generate_lambda_string(document)
end

Instance Method Details

#block_name_declaration(block_name) ⇒ Object

Parameters:



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# File 'lib/bade/generator/ruby_generator.rb', line 310

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

#blocks_name_declaration(mixin_node) ⇒ Object

Parameters:



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# File 'lib/bade/generator/ruby_generator.rb', line 316

def blocks_name_declaration(mixin_node)
  mixin_node.params.select { |param|
    param.type == :mixin_block_param
  }.each { |param|
    block_name_declaration(param.data)
  }

  block_name_declaration('default_block')
end

#buff_code(text) ⇒ Object 



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# File 'lib/bade/generator/ruby_generator.rb', line 89

def buff_code(text)
  @buff << "\t" * @code_indent + text
end

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

Parameters:



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# File 'lib/bade/generator/ruby_generator.rb', line 75

def buff_print_text(text, indent: false, new_line: false)
  indent_text = if indent
                  @indent_string * @indent
                else
                  ''
                end

  prepended_text = indent_text + text

  if prepended_text.length > 0
    buff_code %Q{#{BUFF_NAME} << %Q{#{prepended_text}}}
  end
end

#escape_double_quotes!(str) ⇒ Void

Parameters:

Returns:

  • (Void) 


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# File 'lib/bade/generator/ruby_generator.rb', line 332

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

#formatted_attributes(tag_node) ⇒ String

Returns formatted attributes.

Parameters:

Returns:

  • (String) —

    formatted attributes



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# File 'lib/bade/generator/ruby_generator.rb', line 235

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

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

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

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

#formatted_mixin_params(mixin_node) ⇒ String

Returns formatted params.

Parameters:

Returns:

  • (String) —

    formatted params



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# File 'lib/bade/generator/ruby_generator.rb', line 263

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



  if mixin_node.type == :mixin_call
    if mixin_node.blocks.length > 0
      buff_code '__blocks = {}'

      mixin_node.blocks.each { |block|
        block_name = block.data ? block.data : 'default_block'
        buff_code "__blocks['#{block_name}'] = __create_block('#{block_name}') do"
        indent {
          visit_node_childrens(block)
        }
        buff_code 'end'
      }

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


  # normal params
  result += params.select { |param|
    param.type == :mixin_param
  }.map { |param|
    param.data
  }

  result += params.select { |param|
    param.type == :mixin_key_param
  }.map { |param|
    "#{param.name}: #{param.value}"
  }

  result.join(', ')
end

#generate_lambda(document, filename) ⇒ Object

Parameters:



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# File 'lib/bade/generator/ruby_generator.rb', line 51

def generate_lambda(document, filename)
  eval(generate_lambda_string(document), nil, filename)
end

#generate_lambda_string(document) ⇒ String

Returns string to parse with Ruby.

Parameters:

Returns:

  • (String) —

    string to parse with Ruby



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# File 'lib/bade/generator/ruby_generator.rb', line 59

def generate_lambda_string(document)
  @buff = []
  @indent = 0
  @code_indent = 1

  @buff << START_STRING

  visit_document(document)

  @buff << END_STRING

  @buff.join("\n")
end

#indent(plus = 1) ⇒ Object 



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# File 'lib/bade/generator/ruby_generator.rb', line 253

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

#visit_document(document) ⇒ Object

Parameters:



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

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) 


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# File 'lib/bade/generator/ruby_generator.rb', line 122

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

    when :text
      buff_print_text current_node.data

    when :tag
      visit_tag(current_node)

    when :ruby_code
      buff_code current_node.data

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

    when :comment
      comment_text = current_node.childrens.select { |node|
        !node.data.nil?
      }.map { |node|
        node.data
      }.join(@new_line_string + '#')

      buff_code '#' + comment_text

    when :doctype
      buff_print_text current_node.xml_output

    when :mixin_declaration
      params = formatted_mixin_params(current_node)
      buff_code "#{MIXINS_NAME}['#{current_node.data}'] = lambda { |#{params}|"

      indent {
        blocks_name_declaration(current_node)
        visit_node_childrens(current_node)
      }

      buff_code '}'

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

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

    when :newline
      buff_print_text @new_line_string if @new_line_string.length > 0

    when :import
      # nothing

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

#visit_node_childrens(current_node) ⇒ Object

Parameters:

  • current_node (Node) 


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# File 'lib/bade/generator/ruby_generator.rb', line 108

def visit_node_childrens(current_node)
  visit_nodes(current_node.childrens)
end

#visit_nodes(nodes) ⇒ Object

Parameters:

  • nodes (Array<Node>) 


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# File 'lib/bade/generator/ruby_generator.rb', line 114

def visit_nodes(nodes)
  nodes.each { |node|
    visit_node(node)
  }
end

#visit_tag(current_node) ⇒ Object

Parameters:



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# File 'lib/bade/generator/ruby_generator.rb', line 190

def visit_tag(current_node)
  attributes = formatted_attributes current_node

  text = "<#{current_node.name}"

  if attributes.length > 0
    text += "#{attributes}"
  end

  other_than_new_lines = current_node.childrens.any? { |node|
    node.type != :newline
  }

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

  buff_print_text text, new_line: true, indent: true

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

    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
end