Class: RBS::Sorter

Inherits:
Object
  • Object
show all
Includes:
AST
Defined in:
lib/rbs/sorter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path, stdout: $stdout) ⇒ Sorter

Returns a new instance of Sorter.



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# File 'lib/rbs/sorter.rb', line 9

def initialize(path, stdout: $stdout)
  @path = path
  @stdout = stdout
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/rbs/sorter.rb', line 7

def path
  @path
end

#stdout ⇒ Object (readonly)

Returns the value of attribute stdout.



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# File 'lib/rbs/sorter.rb', line 7

def stdout
  @stdout
end

Instance Method Details

#group(member) ⇒ Object 



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# File 'lib/rbs/sorter.rb', line 31

def group(member)
  case member
  when Declarations::TypeAlias
    -3
  when Declarations::Constant
    -2
  when Declarations::Class, Declarations::Module, Declarations::Interface
    -1
  when Members::Include
    0.0
  when Members::Prepend
    0.2
  when Members::Extend
    0.4
  when Members::ClassVariable
    1
  when Members::ClassInstanceVariable
    2
  when Members::InstanceVariable
    3
  when Members::AttrAccessor, Members::AttrWriter, Members::AttrReader
    if member.kind == :singleton
      5.0
    else
      6.0
    end
  when Members::MethodDefinition
    case member.kind
    when :singleton_instance
      4
    when :singleton
      if member.name == :new
        5.2
      elsif member.visibility == :public
        5.4
      else
        5.6
      end
    else
      if member.name == :initialize
        6.2
      elsif member.visibility == :public
        6.4
      else
        6.6
      end
    end
  when Members::Alias
    if member.singleton?
      5.4
    else
      6.4
    end
  else
    raise
  end
end

#key(member) ⇒ Object 



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# File 'lib/rbs/sorter.rb', line 89

def key(member)
  case member
  when Members::Include, Members::Extend, Members::Prepend
    member.name.to_s
  when Members::ClassVariable, Members::ClassInstanceVariable, Members::InstanceVariable
    member.name.to_s
  when Members::AttrAccessor, Members::AttrWriter, Members::AttrReader
    member.name.to_s
  when Members::MethodDefinition
    member.name.to_s
  when Members::Alias
    member.new_name.to_s
  when Declarations::Constant
    member.name.to_s
  when Declarations::TypeAlias
    member.name.to_s
  when Declarations::Class, Declarations::Module, Declarations::Interface
    member.name.to_s
  else
    raise
  end
end

#run ⇒ Object 



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# File 'lib/rbs/sorter.rb', line 14

def run
  stdout.puts "Opening #{path}..."

  buffer = Buffer.new(name: path, content: path.read)
  _, _, sigs = Parser.parse_signature(buffer)

  sigs.each do |m|
    sort_decl! m
  end

  stdout.puts "Writing #{path}..."
  path.open('w') do |out|
    writer = RBS::Writer.new(out: out)
    writer.write sigs
  end
end

#sort_decl!(decl) ⇒ Object 



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# File 'lib/rbs/sorter.rb', line 112

def sort_decl!(decl)
  case decl
  when Declarations::Class, Declarations::Module, Declarations::Interface
    decl.members.each { |m| sort_decl! m }

    current_visibility = :public
    decl.members.map! do |m|
      case m
      when Members::Public
        current_visibility = :public
        nil
      when Members::Private
        current_visibility = :private
        nil
      when Members::MethodDefinition, Members::AttrReader, Members::AttrWriter, Members::AttrAccessor
        m.update(visibility: m.visibility || current_visibility)
      else
        m
      end
    end
    decl.members.compact!

    decl.members.sort! do |m1, m2|
      group1 = group(m1)
      group2 = group(m2)

      if group1 == group2
        key(m1) <=> key(m2)
      else
        group1 <=> group2
      end
    end

    current_visibility = :public
    decl.members.map! do |m|
      case m
      when Members::MethodDefinition, Members::AttrReader, Members::AttrWriter, Members::AttrAccessor
        new = m.update(visibility: nil)
        cur = current_visibility
        current_visibility = m.visibility
        if cur != m.visibility
          [
            m.visibility == :public ? Members::Public.new(location: nil) : Members::Private.new(location: nil),
            new
          ]
        else
          new
        end
      else
        m
      end
    end
    decl.members.flatten!
  end
end