Class: Prism::Merge::CommentOnlyFileMerger

Inherits:
Object
  • Object
show all
Defined in:
lib/prism/merge/comment_only_file_merger.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(merger:) ⇒ CommentOnlyFileMerger

Returns a new instance of CommentOnlyFileMerger.



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# File 'lib/prism/merge/comment_only_file_merger.rb', line 8

def initialize(merger:)
  @merger = merger
  @comment_only_prefix_lines = {
    template: Set.new,
    destination: Set.new
  }
end

Instance Attribute Details

#comment_only_prefix_lines ⇒ Object (readonly)

Returns the value of attribute comment_only_prefix_lines.



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# File 'lib/prism/merge/comment_only_file_merger.rb', line 6

def comment_only_prefix_lines
  @comment_only_prefix_lines
end

#merger ⇒ Object (readonly)

Returns the value of attribute merger.



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# File 'lib/prism/merge/comment_only_file_merger.rb', line 6

def merger
  @merger
end

Instance Method Details

#comment_only_file?(analysis) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/prism/merge/comment_only_file_merger.rb', line 16

def comment_only_file?(analysis)
  statements = analysis.statements
  return false if statements.nil? || statements.empty?

  statements.all? do |statement|
    statement.is_a?(Ast::Merge::Comment::Empty) ||
      statement.is_a?(Ast::Merge::Comment::Block) ||
      statement.is_a?(Ast::Merge::Comment::Line)
  end
end

#merge ⇒ Object 



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# File 'lib/prism/merge/comment_only_file_merger.rb', line 27

def merge
  @comment_only_prefix_lines = {
    template: Set.new,
    destination: Set.new
  }

  template_lines = merger.template_content.lines.map(&:chomp)
  dest_lines = merger.dest_content.lines.map(&:chomp)

  emit_comment_only_prefix_lines(template_lines, dest_lines)

  template_nodes = Comment::Parser.parse(template_lines)
  dest_nodes = Comment::Parser.parse(dest_lines)
  template_context = build_comment_only_merge_context(nodes: template_nodes, lines: template_lines,
                                                      source: :template)
  dest_context = build_comment_only_merge_context(nodes: dest_nodes, lines: dest_lines, source: :destination)
  output_plan = build_output_plan(template_context: template_context, dest_context: dest_context)
  retained_owners_by_source = output_plan.group_by { |entry| entry[:source] }
                                         .transform_values do |entries|
    entries.map do |entry|
      entry[:node]
    end
  end
  emitted_gap_keys = {
    template: Set.new,
    destination: Set.new
  }

  output_plan.each do |entry|
    context = entry[:source] == :template ? template_context : dest_context
    emit_comment_node_with_layout(
      node: entry[:node],
      source: entry[:source],
      context: context,
      retained_owners: retained_owners_by_source.fetch(entry[:source], []),
      emitted_gap_keys: emitted_gap_keys
    )
  end

  merger.result
end