Class: RBS::EnvironmentLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/rbs/environment_loader.rb

Defined Under Namespace

Classes: UnknownLibraryError

Constant Summary collapse

Library = 
_ = Struct.new(:name, :version, keyword_init: true)
DEFAULT_CORE_ROOT = 
Pathname(_ = __dir__) + "../../core"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(core_root: DEFAULT_CORE_ROOT, repository: Repository.new) ⇒ EnvironmentLoader

Returns a new instance of EnvironmentLoader.



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# File 'lib/rbs/environment_loader.rb', line 37

def initialize(core_root: DEFAULT_CORE_ROOT, repository: Repository.new)
  @core_root = core_root
  @repository = repository

  @libs = Set.new
  @dirs = []
end

Instance Attribute Details

#core_root ⇒ Object (readonly)

Returns the value of attribute core_root.



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# File 'lib/rbs/environment_loader.rb', line 17

def core_root
  @core_root
end

#dirs ⇒ Object (readonly)

Returns the value of attribute dirs.



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# File 'lib/rbs/environment_loader.rb', line 21

def dirs
  @dirs
end

#libs ⇒ Object (readonly)

Returns the value of attribute libs.



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# File 'lib/rbs/environment_loader.rb', line 20

def libs
  @libs
end

#repository ⇒ Object (readonly)

Returns the value of attribute repository.



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# File 'lib/rbs/environment_loader.rb', line 18

def repository
  @repository
end

Class Method Details

.gem_sig_path(name, version) ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 25

def self.gem_sig_path(name, version)
  requirements = []
  requirements << version if version
  spec = Gem::Specification.find_by_name(name, *requirements)
  path = Pathname(spec.gem_dir) + "sig"
  if path.directory?
    [spec, path]
  end
rescue Gem::MissingSpecError
  nil
end

Instance Method Details

#add(path: nil, library: nil, version: nil, resolve_dependencies: true) ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 45

def add(path: nil, library: nil, version: nil, resolve_dependencies: true)
  case
  when path
    dirs << path
  when library
    case library
    when 'rubygems', 'set'
      RBS.logger.warn "`#{library}` has been moved to core library, so it is always loaded. Remove explicit loading `#{library}`"
      return
    end

    if libs.add?(Library.new(name: library, version: version)) && resolve_dependencies
      resolve_dependencies(library: library, version: version)
    end
  end
end

#add_collection(lockfile) ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 77

def add_collection(lockfile)
  lockfile.check_rbs_availability!

  repository.add(lockfile.fullpath)

  lockfile.gems.each_value do |gem|
    add(library: gem[:name], version: gem[:version], resolve_dependencies: false)
  end
end

#each_dir ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 109

def each_dir
  if root = core_root
    yield :core, root
  end

  libs.each do |lib|
    unless has_library?(version: lib.version, library: lib.name)
      raise UnknownLibraryError.new(lib: lib)
    end

    case
    when from_gem = self.class.gem_sig_path(lib.name, lib.version)
      yield lib, from_gem[1]
    when from_repo = repository.lookup(lib.name, lib.version)
      yield lib, from_repo
    end
  end

  dirs.each do |dir|
    yield dir, dir
  end
end

#each_file(path, immediate:, skip_hidden:, &block) ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 132

def each_file(path, immediate:, skip_hidden:, &block)
  case
  when path.file?
    if path.extname == ".rbs" || immediate
      yield path
    end

  when path.directory?
    if path.basename.to_s.start_with?("_")
      if skip_hidden
        unless immediate
          return
        end
      end
    end

    path.children.sort.each do |child|
      each_file(child, immediate: false, skip_hidden: skip_hidden, &block)
    end
  end
end

#each_signature ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 154

def each_signature
  files = Set[]

  each_dir do |source, dir|
    skip_hidden = !source.is_a?(Pathname)

    each_file(dir, skip_hidden: skip_hidden, immediate: true) do |path|
      next if files.include?(path)

      files << path
      buffer = Buffer.new(name: path.to_s, content: path.read(encoding: "UTF-8"))

      _, dirs, decls = Parser.parse_signature(buffer)

      yield source, path, buffer, decls, dirs
    end
  end
end

#has_library?(library:, version:) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbs/environment_loader.rb', line 87

def has_library?(library:, version:)
  if self.class.gem_sig_path(library, version) || repository.lookup(library, version)
    true
  else
    false
  end
end

#load(env:) ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 95

def load(env:)
  # @type var loaded: Array[[AST::Declarations::t, Pathname, source]]
  loaded = []

  each_signature do |source, path, buffer, decls, dirs|
    decls.each do |decl|
      loaded << [decl, path, source]
    end
    env.add_signature(buffer: buffer, directives: dirs, decls: decls)
  end

  loaded
end

#resolve_dependencies(library:, version:) ⇒ Object 



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# File 'lib/rbs/environment_loader.rb', line 62

def resolve_dependencies(library:, version:)
  [Collection::Sources::Rubygems.instance, Collection::Sources::Stdlib.instance].each do |source|
    next unless source.has?(library, version)

    unless version
      version = source.versions(library).last or raise
    end

    source.dependencies_of(library, version)&.each do |dep|
      add(library: dep['name'], version: nil)
    end
    return
  end
end