Class: SchemaTest::Rewriter

Inherits:
Object
  • Object
show all
Defined in:
lib/schema_test/rewriter.rb

Instance Method Summary collapse

Constructor Details

#initialize(contents, line_indexes_with_schemas, options: {}) ⇒ Rewriter

Returns a new instance of Rewriter.



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# File 'lib/schema_test/rewriter.rb', line 11

def initialize(contents, line_indexes_with_schemas, options: {})
  @lines = contents.split("\n")
  @line_indexes_with_schemas = line_indexes_with_schemas

  @disable_rubocop = options.fetch(:disable_rubocop, false)
end

Instance Method Details

#output ⇒ Object 



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# File 'lib/schema_test/rewriter.rb', line 18

def output
  current_offset = 0
  line_indexes_with_schemas.sort_by { |(line,_)| line }.each do |index, method, name, version, location, expected_schema|
    start_index = index + current_offset
    if lines[start_index - 1].match?(/#{DISABLE_RUBOCOP_COMMENT}/)
      lines.delete_at(start_index - 1)
      start_index -= 1
      current_offset -= 2
    end

    if lines[start_index] =~ /#{OPENING_COMMENT}/
      end_index = start_index + lines[start_index..-1].find_index { |line| line =~ /#{CLOSING_COMMENT}\s*\z/ }
      lines.delete_at(end_index + 1) if lines[end_index + 1]&.match?(/#{ENABLE_RUBOCOP_COMMENT}/)
      json_variable_name = lines[start_index + 1].strip.gsub(/,\z/, '')
    else
      end_index = start_index
      json_variable_name = lines[start_index].match(/\(([^,]+)/)[1]
    end

    original_method_definition_length = end_index - start_index
    start_indent = lines[start_index].match(/\A(\s*)/)[0].length
    (end_index - start_index + 1).times { |i| lines.delete_at(start_index) }

    output = StringIO.new
    PP.pp([name, version: version, schema: expected_schema], output)
    output.rewind
    expanded_schema_lines = output.read.strip.gsub(/\A\[/, '').gsub(/\]\z/, '').split("\n")
    expanded_schema_lines.unshift(json_variable_name + ',')

    method_string = [
      disable_rubocop ? (' ' * start_indent) + DISABLE_RUBOCOP_COMMENT : nil,
      (' ' * start_indent) + method.to_s + "( #{OPENING_COMMENT} from #{location}",
      *expanded_schema_lines.map { |line| (' ' * (start_indent + 2)) + line },
      (' ' * start_indent) + ") #{CLOSING_COMMENT}",
      disable_rubocop ? (' ' * start_indent) + ENABLE_RUBOCOP_COMMENT: nil,
    ].compact

    method_string.reverse.each { |line| lines.insert(start_index, line) }

    current_offset += method_string.count - original_method_definition_length - 1
  end

  lines.compact.join("\n") + "\n"
end