Module: Jazzy::SourceKitten

Defined in:
lib/jazzy/sourcekitten.rb

Overview

This module interacts with the sourcekitten command-line executable

Constant Summary collapse

DEFAULT_ATTRIBUTES =

Strip default property attributes because libclang adds them all, even if absent in the original source code.

%w[atomic readwrite assign unsafe_unretained].freeze
AUTOLINK_TEXT_FIELDS =

rubocop:enable Metrics/MethodLength

%w[return
abstract
unavailable_message
deprecation_message].freeze
%w[declaration
other_language_declaration].freeze

Class Method Summary collapse

Class Method Details

.ancestor_name_match(name_part, doc) ⇒ Object

Find the first ancestor of doc whose name matches name_part.



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# File 'lib/jazzy/sourcekitten.rb', line 951

def self.ancestor_name_match(name_part, doc)
  doc.namespace_ancestors.reverse_each do |ancestor|
    if match = name_match(name_part, ancestor.children)
      return match
    end
  end
  nil
end

.arguments_from_options(options) ⇒ Object

Builds SourceKitten arguments based on Jazzy options



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# File 'lib/jazzy/sourcekitten.rb', line 222

def self.arguments_from_options(options)
  arguments = ['doc']
  if options.objc_mode
    arguments += objc_arguments_from_options(options)
  else
    arguments += ['--spm'] if use_spm?(options)
    unless options.module_name.empty?
      arguments += ['--module-name', options.module_name]
    end
    arguments += ['--']
  end

  arguments + options.build_tool_arguments
end

.attribute?(doc, attr_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 280

def self.attribute?(doc, attr_name)
  doc['key.attributes']&.find do |attribute|
    attribute['key.attribute'] == "source.decl.attribute.#{attr_name}"
  end
end

.attribute_regexp(name) ⇒ Object

Regexp to match an @attribute. Complex to handle @available().



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# File 'lib/jazzy/sourcekitten.rb', line 442

def self.attribute_regexp(name)
  qstring = /"(?:[^"\\]*|\\.)*"/
  %r{@#{name}      # @attr name
    (?:\s*\(       # optionally followed by spaces + parens,
      (?:          # containing any number of either..
        [^")]*|    # normal characters or...
        #{qstring} # quoted strings.
      )*           # (end parens content)
    \))?           # (end optional parens)
  }x
end

.autolink(docs, root_decls) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 1042

def self.autolink(docs, root_decls)
  @autolink_root_decls = root_decls
  docs.each do |doc|
    doc.children = autolink(doc.children, root_decls)
    autolink_text_fields(doc, root_decls)
    autolink_highlight_fields(doc, root_decls)
  end
end

.autolink_document(html, doc) ⇒ Object

For autolinking external markdown documents



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# File 'lib/jazzy/sourcekitten.rb', line 1052

def self.autolink_document(html, doc)
  autolink_text(html, doc, @autolink_root_decls || [])
end

.autolink_highlight_fields(doc, root_decls) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 1033

def self.autolink_highlight_fields(doc, root_decls)
  AUTOLINK_HIGHLIGHT_FIELDS.each do |field|
    if text = doc.send(field)
      doc.send(field + '=',
               autolink_text(text, doc, root_decls, after_highlight: true))
    end
  end
end

.autolink_text(text, doc, root_decls, after_highlight: false) ⇒ Object

Links recognized top-level declarations within

  • inlined code within docs

  • method signatures after they’ve been processed by the highlighter

The ‘after_highlight` flag is used to differentiate between the two modes.

DocC link format - follow Xcode and don’t display slash-separated parts. rubocop:disable Metrics/MethodLength



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# File 'lib/jazzy/sourcekitten.rb', line 976

def self.autolink_text(text, doc, root_decls, after_highlight: false)
  text.autolink_block(doc.url, '[^\s]+', after_highlight) do |raw_name|
    sym_name =
      (raw_name[/^<doc:(.*)>$/, 1] || raw_name).sub(/(?<!^)-.+$/, '')

    parts = sym_name
      .sub(/^@/, '') # ignore for custom attribute ref
      .split(%r{(?<!\.)[/.](?!\.)}) # dot or slash, but not '...'
      .reject(&:empty?)

    # First dot-separated component can match any ancestor or top-level doc
    first_part = parts.shift
    name_root = ancestor_name_match(first_part, doc) ||
                name_match(first_part, root_decls)

    # Traverse children via subsequent components, if any
    [name_traversal(parts, name_root), sym_name.sub(%r{^.*/}, '')]
  end.autolink_block(doc.url, '[+-]\[\w+(?: ?\(\w+\))? [\w:]+\]',
                     after_highlight) do |raw_name|
    match = raw_name.match(/([+-])\[(\w+(?: ?\(\w+\))?) ([\w:]+)\]/)

    # Subject component can match any ancestor or top-level doc
    subject = match[2].delete(' ')
    name_root = ancestor_name_match(subject, doc) ||
                name_match(subject, root_decls)

    if name_root
      # Look up the verb in the subject’s children
      [name_match(match[1] + match[3], name_root.children), raw_name]
    end
  end.autolink_block(doc.url, '[+-]\w[\w:]*', after_highlight) do |raw_name|
    [name_match(raw_name, doc.children), raw_name]
  end
end

.autolink_text_fields(doc, root_decls) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 1017

def self.autolink_text_fields(doc, root_decls)
  AUTOLINK_TEXT_FIELDS.each do |field|
    if text = doc.send(field)
      doc.send(field + '=', autolink_text(text, doc, root_decls))
    end
  end

  (doc.parameters || []).each do |param|
    param[:discussion] =
      autolink_text(param[:discussion], doc, root_decls)
  end
end

.availability_attribute?(doc) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 286

def self.availability_attribute?(doc)
  attribute?(doc, 'available')
end

.deduplicate_declarations(declarations) ⇒ Object

Merges multiple extensions of the same entity into a single document.

Merges extensions into the protocol/class/struct/enum they extend, if it occurs in the same project.

Merges redundant declarations when documenting podspecs.



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# File 'lib/jazzy/sourcekitten.rb', line 695

def self.deduplicate_declarations(declarations)
  duplicate_groups = declarations
    .group_by { |d| deduplication_key(d, declarations) }
    .values

  duplicate_groups.flat_map do |group|
    # Put extended type (if present) before extensions
    merge_declarations(group)
  end.compact
end

.deduplication_key(decl, root_decls) ⇒ Object

Two declarations get merged if they have the same deduplication key.



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# File 'lib/jazzy/sourcekitten.rb', line 722

def self.deduplication_key(decl, root_decls)
  # Swift extension of objc class
  if decl.swift_objc_extension?
    [decl.swift_extension_objc_name, :objc_class_and_categories]
  # Swift type or Swift extension of Swift type
  elsif mergeable_swift?(decl)
    [decl.usr, decl.name]
  # Objc categories and classes
  elsif mergeable_objc?(decl, root_decls)
    # Using the ObjC name to match swift_objc_extension.
    name, _ = decl.objc_category_name || decl.objc_name
    [name, :objc_class_and_categories]
  # Non-mergable declarations (funcs, typedefs etc...)
  else
    [decl.usr, decl.name, decl.type.kind]
  end
end

.expand_extension(extension, name_parts, decls) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 669

def self.expand_extension(extension, name_parts, decls)
  return extension if name_parts.empty?

  name = name_parts.shift
  candidates = decls.select { |decl| decl.name == name }
  SourceDeclaration.new.tap do |decl|
    make_default_doc_info(decl)
    decl.name = name
    decl.modulename = extension.modulename
    decl.type = extension.type
    decl.mark = extension.mark
    decl.usr = candidates.first.usr unless candidates.empty?
    child = expand_extension(extension,
                             name_parts,
                             candidates.flat_map(&:children).uniq)
    child.parent_in_code = decl
    decl.children = [child]
  end
end

.expand_extensions(decls) ⇒ Object

Expands extensions of nested types declared at the top level into a tree so they can be deduplicated properly



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# File 'lib/jazzy/sourcekitten.rb', line 655

def self.expand_extensions(decls)
  decls.map do |decl|
    next decl unless decl.type.extension? && decl.name.include?('.')

    # Don't expand the Swift namespace if we're in ObjC mode.
    # ex: NS_SWIFT_NAME(Foo.Bar) should not create top-level Foo
    next decl if decl.swift_objc_extension? && !Config.instance.hide_objc?

    name_parts = decl.name.split('.')
    decl.name = name_parts.pop
    expand_extension(decl, name_parts, decls)
  end
end

.extract_attributes(declaration, name = '\w+') ⇒ Object

Get all attributes of some name



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# File 'lib/jazzy/sourcekitten.rb', line 455

def self.extract_attributes(declaration, name = '\w+')
  attrs = declaration.scan(attribute_regexp(name))
  # Rouge #806 workaround, use unicode lookalike for ')' inside attributes.
  attrs.map { |str| str.gsub(/\)(?!\s*$)/, "\ufe5a") }
end

.extract_availability(declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 461

def self.extract_availability(declaration)
  extract_attributes(declaration, 'available')
end

.filter_excluded_files(json) ⇒ Object

Filter based on the “excluded” flag.



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# File 'lib/jazzy/sourcekitten.rb', line 927

def self.filter_excluded_files(json)
  excluded_files = Config.instance.excluded_files
  json.map do |doc|
    key = doc.keys.first
    doc unless excluded_files.detect do |exclude|
      File.fnmatch?(exclude, key)
    end
  end.compact
end

.filter_files(json) ⇒ Object

Apply filtering based on the “included” and “excluded” flags.



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# File 'lib/jazzy/sourcekitten.rb', line 906

def self.filter_files(json)
  json = filter_included_files(json) if Config.instance.included_files.any?
  json = filter_excluded_files(json) if Config.instance.excluded_files.any?
  json.map do |doc|
    key = doc.keys.first
    doc[key]
  end.compact
end

.filter_included_files(json) ⇒ Object

Filter based on the “included” flag.



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# File 'lib/jazzy/sourcekitten.rb', line 916

def self.filter_included_files(json)
  included_files = Config.instance.included_files
  json.map do |doc|
    key = doc.keys.first
    doc if included_files.detect do |include|
      File.fnmatch?(include, key)
    end
  end.compact
end

.find_generic_requirements(parsed_declaration) ⇒ Object

rubocop:enable Metrics/PerceivedComplexity rubocop:enable Metrics/CyclomaticComplexity rubocop:enable Metrics/MethodLength



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# File 'lib/jazzy/sourcekitten.rb', line 646

def self.find_generic_requirements(parsed_declaration)
  parsed_declaration =~ /\bwhere\s+(.*)$/m
  return nil unless Regexp.last_match

  Regexp.last_match[1].gsub(/\s+/, ' ')
end

.fix_up_compiler_decl(annotated_decl, declaration) ⇒ Object

Apply fixes to improve the compiler’s declaration



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# File 'lib/jazzy/sourcekitten.rb', line 483

def self.fix_up_compiler_decl(annotated_decl, declaration)
  annotated_decl.
    # Replace the fully qualified name of a type with its base name
    gsub(declaration.fully_qualified_name_regexp,
         declaration.name).
    # Workaround for SR-9816
    gsub(" {\n  get\n  }", '').
    # Workaround for SR-12139
    gsub(/mutating\s+mutating/, 'mutating')
end

.group_custom_categories(docs) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 73

def self.group_custom_categories(docs)
  group = Config.instance.custom_categories.map do |category|
    children = category['children'].flat_map do |name|
      docs_with_name, docs = docs.partition { |doc| doc.name == name }
      if docs_with_name.empty?
        warn 'WARNING: No documented top-level declarations match ' \
          "name \"#{name}\" specified in categories file"
      end
      docs_with_name
    end
    # Category config overrides alphabetization
    children.each.with_index { |child, i| child.nav_order = i }
    make_group(children, category['name'], '')
  end
  [group.compact, docs]
end

.group_docs(docs) ⇒ Object

Group root-level docs by custom categories (if any) and type



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# File 'lib/jazzy/sourcekitten.rb', line 64

def self.group_docs(docs)
  custom_categories, docs = group_custom_categories(docs)
  unlisted_prefix = Config.instance.custom_categories_unlisted_prefix
  type_categories, uncategorized = group_type_categories(
    docs, custom_categories.any? ? unlisted_prefix : ''
  )
  custom_categories + merge_categories(type_categories) + uncategorized
end

.group_type_categories(docs, type_category_prefix) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 90

def self.group_type_categories(docs, type_category_prefix)
  group = SourceDeclaration::Type.all.map do |type|
    children, docs = docs.partition { |doc| doc.type == type }
    make_group(
      children,
      type_category_prefix + type.plural_name,
      "The following #{type.plural_name.downcase} are available globally.",
      type_category_prefix + type.plural_url_name,
    )
  end
  [group.compact, docs]
end

.highlight_declaration(doc, declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 408

def self.highlight_declaration(doc, declaration)
  if declaration.swift?
    declaration.declaration =
      Highlighter.highlight_swift(make_swift_declaration(doc, declaration))
  else
    declaration.declaration =
      Highlighter.highlight_objc(
        make_objc_declaration(doc['key.parsed_declaration']),
      )
    declaration.other_language_declaration =
      Highlighter.highlight_swift(doc['key.swift_declaration'])
  end
end

.make_default_doc_info(declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 273

def self.make_default_doc_info(declaration)
  # @todo: Fix these
  declaration.abstract = ''
  declaration.parameters = []
  declaration.children = []
end

.make_deprecation_info(doc, declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 422

def self.make_deprecation_info(doc, declaration)
  if declaration.deprecated
    declaration.deprecation_message =
      Markdown.render(doc['key.deprecation_message'] || '')
  end
  if declaration.unavailable
    declaration.unavailable_message =
      Markdown.render(doc['key.unavailable_message'] || '')
  end
end

.make_doc_info(doc, declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 389

def self.make_doc_info(doc, declaration)
  return unless should_document?(doc)

  highlight_declaration(doc, declaration)
  make_deprecation_info(doc, declaration)

  unless doc['key.doc.full_as_xml']
    return process_undocumented_token(doc, declaration)
  end

  declaration.abstract = Markdown.render(doc['key.doc.comment'] || '',
                                         declaration.highlight_language)
  declaration.discussion = ''
  declaration.return = Markdown.rendered_returns
  declaration.parameters = parameters(doc, Markdown.rendered_parameters)

  @stats.add_documented
end

.make_doc_urls(docs) ⇒ Hash

rubocop:disable Metrics/MethodLength Generate doc URL by prepending its parents URLs

Returns:

  • (Hash) —

    input docs with URLs



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# File 'lib/jazzy/sourcekitten.rb', line 154

def self.make_doc_urls(docs)
  docs.each do |doc|
    if doc.render_as_page?
      doc.url = (
        subdir_for_doc(doc) +
        [sanitize_filename(doc) + '.html']
      ).map { |path| ERB::Util.url_encode(path) }.join('/')
      doc.children = make_doc_urls(doc.children)
    else
      # Don't create HTML page for this doc if it doesn't have children
      # Instead, make its link a hash-link on its parent's page
      if doc.typename == '<<error type>>'
        warn "A compile error prevented #{doc.fully_qualified_name} " \
          'from receiving a unique USR. Documentation may be ' \
          'incomplete. Please check for compile errors by running ' \
          '`xcodebuild` or `swift build` with arguments ' \
          "`#{Config.instance.build_tool_arguments.shelljoin}`."
      end
      id = doc.usr
      unless id
        id = doc.name || 'unknown'
        warn "`#{id}` has no USR. First make sure all modules used in " \
          'your project have been imported. If all used modules are ' \
          'imported, please report this problem by filing an issue at ' \
          'https://github.com/realm/jazzy/issues along with your ' \
          'Xcode project. If this token is declared in an `#if` block, ' \
          'please ignore this message.'
      end
      doc.url = "#{doc.parent_in_docs.url}#/#{id}"
    end
  end
end

.make_group(group, name, abstract, url_name = nil) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 116

def self.make_group(group, name, abstract, url_name = nil)
  group.reject! { |doc| doc.name.empty? }
  unless group.empty?
    SourceDeclaration.new.tap do |sd|
      sd.type     = SourceDeclaration::Type.overview
      sd.name     = name
      sd.url_name = url_name
      sd.abstract = Markdown.render(abstract)
      sd.children = group
    end
  end
end

.make_objc_declaration(declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 541

def self.make_objc_declaration(declaration)
  return declaration if Config.instance.keep_property_attributes

  declaration =~ /\A@property\s+\((.*?)\)/
  return declaration unless Regexp.last_match

  attrs = Regexp.last_match[1].split(',').map(&:strip) - DEFAULT_ATTRIBUTES
  attrs_text = attrs.empty? ? '' : " (#{attrs.join(', ')})"

  declaration
    .sub(/(?<=@property)\s+\(.*?\)/, attrs_text)
    .gsub(/\s+/, ' ')
end

.make_source_declarations(docs, parent = nil, mark = SourceMark.new) ⇒ Object

rubocop:disable Metrics/MethodLength rubocop:disable Metrics/CyclomaticComplexity rubocop:disable Metrics/PerceivedComplexity



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# File 'lib/jazzy/sourcekitten.rb', line 566

def self.make_source_declarations(docs, parent = nil, mark = SourceMark.new)
  declarations = []
  current_mark = mark
  Array(docs).each do |doc|
    if doc.key?('key.diagnostic_stage')
      declarations += make_source_declarations(
        doc['key.substructure'], parent
      )
      next
    end
    declaration = SourceDeclaration.new
    declaration.parent_in_code = parent
    declaration.type =
      SourceDeclaration::Type.new(doc['key.kind'],
                                  doc['key.fully_annotated_decl'])
    declaration.typename = doc['key.typename']
    declaration.objc_name = doc['key.name']
    documented_name = if Config.instance.hide_objc? && doc['key.swift_name']
                        doc['key.swift_name']
                      else
                        declaration.objc_name
                      end
    if declaration.type.task_mark?(documented_name)
      current_mark = SourceMark.new(documented_name)
    end
    if declaration.type.swift_enum_case?
      # Enum "cases" are thin wrappers around enum "elements".
      declarations += make_source_declarations(
        doc['key.substructure'], parent, current_mark
      )
      next
    end
    next unless declaration.type.should_document?

    unless declaration.type.name
      raise 'Please file an issue at ' \
        'https://github.com/realm/jazzy/issues about adding support ' \
        "for `#{declaration.type.kind}`."
    end

    declaration.file = Pathname(doc['key.filepath']) if doc['key.filepath']
    declaration.usr = doc['key.usr']
    declaration.type_usr = doc['key.typeusr']
    declaration.modulename = doc['key.modulename']
    declaration.name = documented_name
    declaration.mark = current_mark
    declaration.access_control_level =
      SourceDeclaration::AccessControlLevel.from_doc(doc)
    declaration.line = doc['key.doc.line'] || doc['key.line']
    declaration.column = doc['key.doc.column'] || doc['key.column']
    declaration.start_line = doc['key.parsed_scope.start']
    declaration.end_line = doc['key.parsed_scope.end']
    declaration.deprecated = doc['key.always_deprecated']
    declaration.unavailable = doc['key.always_unavailable']
    declaration.generic_requirements =
      find_generic_requirements(doc['key.parsed_declaration'])
    inherited_types = doc['key.inheritedtypes'] || []
    declaration.inherited_types =
      inherited_types.map { |type| type['key.name'] }.compact
    declaration.async =
      doc['key.symgraph_async'] ||
      if xml_declaration = doc['key.fully_annotated_decl']
        swift_async?(xml_declaration)
      end

    next unless make_doc_info(doc, declaration)

    declaration.children = make_substructure(doc, declaration)
    next if declaration.type.extension? &&
            declaration.children.empty? &&
            !declaration.inherited_types?

    declarations << declaration
  end
  declarations
end

.make_substructure(doc, declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 555

def self.make_substructure(doc, declaration)
  return [] unless subdocs = doc['key.substructure']

  make_source_declarations(subdocs,
                           declaration,
                           declaration.mark_for_children)
end

.make_swift_declaration(doc, declaration) ⇒ Object

Find the best Swift declaration



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# File 'lib/jazzy/sourcekitten.rb', line 495

def self.make_swift_declaration(doc, declaration)
  # From compiler 'quick help' style
  annotated_decl_xml = doc['key.annotated_decl']

  return nil unless annotated_decl_xml

  annotated_decl_attrs, annotated_decl_body =
    split_decl_attributes(xml_to_text(annotated_decl_xml))

  # From source code
  parsed_decl = doc['key.parsed_declaration']

  # Don't present type attributes on extensions
  return parsed_decl if declaration.type.extension?

  decl =
    if prefer_parsed_decl?(parsed_decl,
                           annotated_decl_body,
                           declaration.type)
      # Strip any attrs captured by parsed version
      inline_attrs, parsed_decl_body = split_decl_attributes(parsed_decl)
      parsed_decl_body.unindent(inline_attrs.length)
    else
      # Improve the compiler declaration
      fix_up_compiler_decl(annotated_decl_body, declaration)
    end

  # @available attrs only in compiler 'interface' style
  extract_availability(doc['key.doc.declaration'] || '')
    .concat(extract_attributes(annotated_decl_attrs))
    .push(decl)
    .join("\n")
end

.mark_and_merge_protocol_extensions(protocol, extensions) ⇒ Object

Protocol extensions.

If any of the extensions provide default implementations for methods in the given protocol, merge those members into the protocol doc instead of keeping them on the extension. These get a “Default implementation”annotation in the generated docs. Default implementations added by conditional extensions are annotated but listed separately.

Protocol methods provided only in an extension and not in the protocol itself are a special beast: they do not use dynamic dispatch. These get an “Extension method” annotation in the generated docs.



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# File 'lib/jazzy/sourcekitten.rb', line 835

def self.mark_and_merge_protocol_extensions(protocol, extensions)
  extensions.each do |ext|
    ext.children = ext.children.select do |ext_member|
      proto_member = protocol.children.find do |p|
        p.name == ext_member.name &&
          p.type == ext_member.type &&
          p.async == ext_member.async
      end

      # Extension-only method, keep.
      unless proto_member
        ext_member.from_protocol_extension = true
        next true
      end

      # Default impl but constrained, mark and keep.
      if ext.constrained_extension?
        ext_member.default_impl_abstract = ext_member.abstract
        ext_member.abstract = nil
        next true
      end

      # Default impl for all users, merge.
      proto_member.default_impl_abstract = ext_member.abstract
      next false
    end
  end
end

.merge_categories(categories) ⇒ Object

Join categories with the same name (eg. ObjC and Swift classes)



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# File 'lib/jazzy/sourcekitten.rb', line 104

def self.merge_categories(categories)
  merged = []
  categories.each do |new_category|
    if existing = merged.find { |c| c.name == new_category.name }
      existing.children += new_category.children
    else
      merged.append(new_category)
    end
  end
  merged
end

.merge_code_declaration(decls) ⇒ Object

Merge useful information added by extensions into the main declaration: public protocol conformances and, for top-level extensions, further conditional extensions of the same type.



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# File 'lib/jazzy/sourcekitten.rb', line 891

def self.merge_code_declaration(decls)
  first = decls.first

  declarations = decls[1..].select do |decl|
    decl.type.swift_extension? &&
      (decl.other_inherited_types?(@inaccessible_protocols) ||
        (first.type.swift_extension? && decl.constrained_extension?))
  end.map(&:declaration)

  unless declarations.empty?
    first.declaration = declarations.prepend(first.declaration).uniq.join
  end
end

.merge_consecutive_marks(docs) ⇒ Object

Merge consecutive sections with the same mark into one section



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# File 'lib/jazzy/sourcekitten.rb', line 130

def self.merge_consecutive_marks(docs)
  prev_mark = nil
  docs.each do |doc|
    if prev_mark&.can_merge?(doc.mark)
      doc.mark = prev_mark
    end
    prev_mark = doc.mark
    merge_consecutive_marks(doc.children)
  end
end

.merge_declarations(decls) ⇒ Object

rubocop:disable Metrics/MethodLength rubocop:disable Metrics/PerceivedComplexity Merges all of the given types and extensions into a single document.



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# File 'lib/jazzy/sourcekitten.rb', line 743

def self.merge_declarations(decls)
  extensions, typedecls = decls.partition { |d| d.type.extension? }

  if typedecls.size > 1
    info = typedecls
      .map { |t| "#{t.type.name.downcase} #{t.name}" }
      .join(', ')
    warn 'Found conflicting type declarations with the same name, which ' \
      "may indicate a build issue or a bug in Jazzy: #{info}"
  end
  typedecl = typedecls.first

  extensions = reject_inaccessible_extensions(typedecl, extensions)

  if typedecl
    if typedecl.type.swift_protocol?
      mark_and_merge_protocol_extensions(typedecl, extensions)
      extensions.reject! { |ext| ext.children.empty? }
    end

    merge_objc_declaration_marks(typedecl, extensions)
  end

  # Keep type-aliases separate from any extensions
  if typedecl&.type&.swift_typealias?
    [merge_type_and_extensions(typedecls, []),
     merge_type_and_extensions([], extensions)]
  else
    merge_type_and_extensions(typedecls, extensions)
  end
end

.merge_objc_declaration_marks(typedecl, extensions) ⇒ Object

Mark children merged from categories with the name of category (unless they already have a mark)



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# File 'lib/jazzy/sourcekitten.rb', line 866

def self.merge_objc_declaration_marks(typedecl, extensions)
  return unless typedecl.type.objc_class?

  extensions.each do |ext|
    _, category_name = ext.objc_category_name
    ext.children.each { |c| c.mark.name ||= category_name }
  end
end

.merge_type_and_extensions(typedecls, extensions) ⇒ Object

rubocop:enable Metrics/PerceivedComplexity rubocop:enable Metrics/MethodLength



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# File 'lib/jazzy/sourcekitten.rb', line 777

def self.merge_type_and_extensions(typedecls, extensions)
  # Constrained extensions at the end
  constrained, regular_exts = extensions.partition(&:constrained_extension?)
  decls = typedecls + regular_exts + constrained
  return nil if decls.empty?

  move_merged_extension_marks(decls)
  merge_code_declaration(decls)

  decls.first.tap do |merged|
    merged.children = deduplicate_declarations(
      decls.flat_map(&:children).uniq,
    )
    merged.children.each do |child|
      child.parent_in_code = merged
    end
  end
end

.mergeable_objc?(decl, root_decls) ⇒ Boolean

Returns true if an Objective-C declaration is mergeable.

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 707

def self.mergeable_objc?(decl, root_decls)
  decl.type.objc_class? \
    || (decl.type.objc_category? \
        && name_match(decl.objc_category_name[0], root_decls))
end

.mergeable_swift?(decl) ⇒ Boolean

Returns if a Swift declaration is mergeable. Start off merging in typealiases to help understand extensions.

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 715

def self.mergeable_swift?(decl)
  decl.type.swift_extensible? ||
    decl.type.swift_extension? ||
    decl.type.swift_typealias?
end

.move_merged_extension_marks(decls) ⇒ Object

For each extension to be merged, move any MARK from the extension declaration down to the extension contents so it still shows up.



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# File 'lib/jazzy/sourcekitten.rb', line 877

def self.move_merged_extension_marks(decls)
  return unless to_be_merged = decls[1..]

  to_be_merged.each do |ext|
    child = ext.children.first
    if child && child.mark.empty?
      child.mark.copy(ext.mark)
    end
  end
end

.name_match(name_part, docs) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 937

def self.name_match(name_part, docs)
  return nil unless name_part

  wildcard_expansion = Regexp.escape(name_part)
    .gsub('\.\.\.', '[^)]*')
    .gsub(/<.*>/, '')

  whole_name_pat = /\A#{wildcard_expansion}\Z/
  docs.find do |doc|
    whole_name_pat =~ doc.name
  end
end

.name_traversal(name_parts, doc) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 960

def self.name_traversal(name_parts, doc)
  while doc && !name_parts.empty?
    next_part = name_parts.shift
    doc = name_match(next_part, doc.children)
  end
  doc
end

.objc_arguments_from_options(options) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 237

def self.objc_arguments_from_options(options)
  arguments = []
  if options.build_tool_arguments.empty?
    arguments += ['--objc', options.umbrella_header.to_s, '--', '-x',
                  'objective-c', '-isysroot',
                  `xcrun --show-sdk-path --sdk #{options.sdk}`.chomp,
                  '-I', options.framework_root.to_s,
                  '-fmodules']
  end
  # add additional -I arguments for each subdirectory of framework_root
  unless options.framework_root.nil?
    rec_path(Pathname.new(options.framework_root.to_s)).collect do |child|
      if child.directory?
        arguments += ['-I', child.to_s]
      end
    end
  end
  arguments
end

.parameters(doc, discovered) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 379

def self.parameters(doc, discovered)
  (doc['key.doc.parameters'] || []).map do |p|
    name = p['name']
    {
      name: name,
      discussion: discovered[name],
    }
  end.reject { |param| param[:discussion].nil? }
end

.parse(sourcekitten_output, min_acl, skip_undocumented, inject_docs) ⇒ Hash

Parse sourcekitten STDOUT output as JSON

Returns:

  • (Hash) —

    structured docs



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# File 'lib/jazzy/sourcekitten.rb', line 1073

def self.parse(sourcekitten_output, min_acl, skip_undocumented, inject_docs)
  @min_acl = min_acl
  @skip_undocumented = skip_undocumented
  @stats = Stats.new
  @inaccessible_protocols = []
  sourcekitten_json = filter_files(JSON.parse(sourcekitten_output).flatten)
  docs = make_source_declarations(sourcekitten_json).concat inject_docs
  docs = expand_extensions(docs)
  docs = deduplicate_declarations(docs)
  docs = reject_objc_types(docs)
  # Remove top-level enum cases because it means they have an ACL lower
  # than min_acl
  docs = docs.reject { |doc| doc.type.swift_enum_element? }
  ungrouped_docs = docs
  docs = group_docs(docs)
  merge_consecutive_marks(docs)
  make_doc_urls(docs)
  autolink(docs, ungrouped_docs)
  [docs, @stats]
end

.prefer_parsed_decl?(parsed, annotated, type) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 471

def self.prefer_parsed_decl?(parsed, annotated, type)
  return true if annotated.empty?
  return false unless parsed
  return false if type.swift_variable? # prefer { get }-style

  annotated.include?(' = default') || # SR-2608
    (parsed.scan(/@autoclosure|@escaping/).count >
     annotated.scan(/@autoclosure|@escaping/).count) || # SR-6321
    parsed.include?("\n") # user formatting
end

.process_undocumented_token(doc, declaration) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 363

def self.process_undocumented_token(doc, declaration)
  make_default_doc_info(declaration)

  if !declaration.swift? || should_mark_undocumented(declaration)
    @stats.add_undocumented(declaration)
    return nil if @skip_undocumented

    declaration.abstract = undocumented_abstract
  else
    declaration.abstract = Markdown.render(doc['key.doc.comment'] || '',
                                           declaration.highlight_language)
  end

  declaration
end

.rec_path(path) ⇒ Object

returns all subdirectories of specified path



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# File 'lib/jazzy/sourcekitten.rb', line 205

def self.rec_path(path)
  path.children.collect do |child|
    if child.directory?
      rec_path(child) + [child]
    end
  end.select { |x| x }.flatten(1)
end

.reject_inaccessible_extensions(typedecl, extensions) ⇒ Object

Now we know all the public types and all the private protocols, reject extensions that add public protocols to private types or add private protocols to public types.



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# File 'lib/jazzy/sourcekitten.rb', line 799

def self.reject_inaccessible_extensions(typedecl, extensions)
  swift_exts, objc_exts = extensions.partition(&:swift?)

  # Reject extensions that are just conformances to private protocols
  unwanted_exts, wanted_exts = swift_exts.partition do |ext|
    ext.children.empty? &&
      !ext.other_inherited_types?(@inaccessible_protocols)
  end

  # Given extensions of a type from this module, without the
  # type itself, the type must be private and the extensions
  # should be rejected.
  if !typedecl &&
     wanted_exts.first &&
     wanted_exts.first.type_from_doc_module?
    unwanted_exts += wanted_exts
    wanted_exts = []
  end

  # Don't tell the user to document them
  unwanted_exts.each { |e| @stats.remove_undocumented(e) }

  objc_exts + wanted_exts
end

.reject_objc_types(docs) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 1056

def self.reject_objc_types(docs)
  enums = docs.map do |doc|
    [doc, doc.children]
  end.flatten.select { |child| child.type.objc_enum? }.map(&:objc_name)
  docs.map do |doc|
    doc.children = doc.children.reject do |child|
      child.type.objc_typedef? && enums.include?(child.name)
    end
    doc
  end.reject do |doc|
    doc.type.objc_unexposed? ||
      (doc.type.objc_typedef? && enums.include?(doc.name))
  end
end

.run_sourcekitten(arguments) ⇒ Object

Run sourcekitten with given arguments and return STDOUT



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# File 'lib/jazzy/sourcekitten.rb', line 258

def self.run_sourcekitten(arguments)
  if swift_version = Config.instance.swift_version
    unless xcode = XCInvoke::Xcode.find_swift_version(swift_version)
      raise "Unable to find an Xcode with swift version #{swift_version}."
    end

    env = xcode.as_env
  else
    env = ENV
  end
  bin_path = Pathname(__FILE__) + '../../../bin/sourcekitten'
  output, = Executable.execute_command(bin_path, arguments, true, env: env)
  output
end

.sanitize_filename(doc) ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 141

def self.sanitize_filename(doc)
  unsafe_filename = doc.docs_filename
  sanitzation_enabled = Config.instance.use_safe_filenames
  if sanitzation_enabled && !doc.type.name_controlled_manually?
    CGI.escape(unsafe_filename).gsub('_', '%5F').tr('%', '_')
  else
    unsafe_filename
  end
end

.should_document?(doc) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 294

def self.should_document?(doc)
  return false if doc['key.doc.comment'].to_s.include?(':nodoc:')

  type = SourceDeclaration::Type.new(doc['key.kind'])

  # Always document Objective-C declarations.
  return true unless type.swift_type?

  # Don't document Swift types if we are hiding Swift
  return false if Config.instance.hide_swift?

  # Don't document @available declarations with no USR, since it means
  # they're unavailable.
  if availability_attribute?(doc) && !doc['key.usr']
    return false
  end

  # Only document @_spi declarations in some scenarios
  return false unless should_document_spi?(doc)

  # Don't document declarations excluded by the min_acl setting
  if type.swift_extension?
    should_document_swift_extension?(doc)
  else
    should_document_acl?(type, doc)
  end
end

.should_document_acl?(type, doc) ⇒ Boolean

Check visibility: access control

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 333

def self.should_document_acl?(type, doc)
  # Include all enum elements for now, can't tell their ACL.
  return true if type.swift_enum_element?

  acl_ok = SourceDeclaration::AccessControlLevel.from_doc(doc) >= @min_acl
  unless acl_ok
    @stats.add_acl_skipped
    @inaccessible_protocols.append(doc['key.name']) if type.swift_protocol?
  end
  acl_ok
end

.should_document_spi?(doc) ⇒ Boolean

Check visibility: SPI

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 323

def self.should_document_spi?(doc)
  spi_ok = @min_acl < SourceDeclaration::AccessControlLevel.public ||
           Config.instance.include_spi_declarations ||
           (!spi_attribute?(doc) && !doc['key.symgraph_spi'])

  @stats.add_spi_skipped unless spi_ok
  spi_ok
end

.should_document_swift_extension?(doc) ⇒ Boolean

Document extensions if they add protocol conformances, or have any member that needs to be documented.

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 347

def self.should_document_swift_extension?(doc)
  doc['key.inheritedtypes'] ||
    Array(doc['key.substructure']).any? do |subdoc|
      subtype = SourceDeclaration::Type.new(subdoc['key.kind'])
      !subtype.mark? && should_document?(subdoc)
    end
end

.should_mark_undocumented(declaration) ⇒ Object

Call things undocumented if they were compiled properly and came from our module.



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# File 'lib/jazzy/sourcekitten.rb', line 357

def self.should_mark_undocumented(declaration)
  declaration.usr &&
    (declaration.modulename.nil? ||
     declaration.modulename == Config.instance.module_name)
end

.spi_attribute?(doc) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 290

def self.spi_attribute?(doc)
  attribute?(doc, '_spi')
end

.split_decl_attributes(declaration) ⇒ Object

Split leading attributes from a decl, returning both parts.



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# File 'lib/jazzy/sourcekitten.rb', line 466

def self.split_decl_attributes(declaration)
  declaration =~ /^((?:#{attribute_regexp('\w+')}\s*)*)(.*)$/m
  Regexp.last_match.captures
end

.subdir_for_doc(doc) ⇒ Object

Determine the subdirectory in which a doc should be placed. Guides in the root for back-compatibility. Declarations under outer namespace type (Structures, Classes, etc.)



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# File 'lib/jazzy/sourcekitten.rb', line 191

def self.subdir_for_doc(doc)
  return [] if doc.type.markdown?

  top_level_decl = doc.namespace_path.first
  if top_level_decl.type.name
    [top_level_decl.type.plural_url_name] +
      doc.namespace_ancestors.map(&:name)
  else
    # Category - in the root
    []
  end
end

.swift_async?(fully_annotated_decl) ⇒ Boolean

Exclude non-async routines that accept async closures

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 530

def self.swift_async?(fully_annotated_decl)
  document = REXML::Document.new(fully_annotated_decl)
  !document.elements['/*/syntaxtype.keyword[text()="async"]'].nil?
rescue StandardError
  nil
end

.undocumented_abstract ⇒ Object 



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# File 'lib/jazzy/sourcekitten.rb', line 57

def self.undocumented_abstract
  @undocumented_abstract ||= Markdown.render(
    Config.instance.undocumented_text,
  ).freeze
end

.use_spm?(options) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jazzy/sourcekitten.rb', line 213

def self.use_spm?(options)
  options.swift_build_tool == :spm ||
    (!options.swift_build_tool_configured &&
     Dir['*.xcodeproj', '*.xcworkspace'].empty? &&
     !options.build_tool_arguments.include?('-project') &&
     !options.build_tool_arguments.include?('-workspace'))
end

.xml_to_text(xml) ⇒ Object

Strip tags and convert entities



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# File 'lib/jazzy/sourcekitten.rb', line 434

def self.xml_to_text(xml)
  document = REXML::Document.new(xml)
  REXML::XPath.match(document.root, '//text()').map(&:value).join
rescue StandardError
  ''
end