Class: Sorbet::Private::HiddenMethodFinder

Inherits:
Object
  • Object
show all
Includes:
StepInterface
Defined in:
lib/hidden-definition-finder.rb

Constant Summary collapse

PATH = 
"sorbet/rbi/hidden-definitions/"
TMP_PATH = 
Dir.mktmpdir + "/"
TMP_RBI = 
TMP_PATH + "reflection.rbi"
DIFF_RBI = 
TMP_PATH + "hidden.rbi.tmp"
RBI_CONSTANTS = 
TMP_PATH + "reflection.json"
RBI_CONSTANTS_ERR = 
RBI_CONSTANTS + ".err"
SOURCE_CONSTANTS = 
TMP_PATH + "from-source.json"
SOURCE_CONSTANTS_ERR = 
SOURCE_CONSTANTS + ".err"
HIDDEN_RBI = 
PATH + "hidden.rbi"
ERRORS_RBI = 
PATH + "errors.txt"
HEADER = 
Sorbet::Private::Serialize.header('autogenerated', 'hidden-definitions')
DENYLIST =

These methods are defined in C++ and we want our C++ definition to win instead of a shim.

Set.new([
  [Class.object_id, "new"],
  [BasicObject.object_id, "initialize"],
]).freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.main ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 37

def self.main
  self.new.main
end

.output_file ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 447

def self.output_file
  PATH
end

Instance Method Details

#all_modules_and_aliases ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 73

def all_modules_and_aliases
  puts "Naming all Modules"
  [constant_cache.all_module_names.sort, constant_cache.all_module_aliases]
end

#capture_stderr ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 399

def capture_stderr
  real_stderr = $stderr
  $stderr = StringIO.new
  yield
  $stderr.string
ensure
  $stderr = real_stderr
end

#constant_cache ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 67

def constant_cache
  @cache ||= Sorbet::Private::ConstantLookupCache.new
  @cache
end

#gen_source_rbi(classes, aliases) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 82

def gen_source_rbi(classes, aliases)
  puts "Generating #{TMP_RBI} with #{classes.count} modules and #{aliases.count} aliases"
  serializer = Sorbet::Private::Serialize.new(constant_cache)
  buffer = []
  buffer << Sorbet::Private::Serialize.header

  # should we do something with these errors?
  capture_stderr do
    classes.each do |class_name|
      buffer << serializer.class_or_module(class_name)
    end
    aliases.each do |base, other_names|
      other_names.each do |other_name|
        buffer << serializer.alias(base, other_name)
      end
    end
  end
  File.write(TMP_RBI, buffer.join("\n"))
end

#looks_like_stub_name(name) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 312

def looks_like_stub_name(name)
  name.include?('$')
end

#main ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 41

def main
  mk_dir
  require_everything
  classes, aliases = all_modules_and_aliases
  gen_source_rbi(classes, aliases)
  rm_rbis
  write_constants
  source, rbi = read_constants
  write_diff(source, rbi)
  split_rbi
  rm_dir
end

#mk_dir ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 54

def mk_dir
  FileUtils.mkdir_p(PATH) unless Dir.exist?(PATH)
end

#read_constants ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 155

def read_constants
  puts "Reading #{SOURCE_CONSTANTS}"
  source = JSON.parse(File.read(SOURCE_CONSTANTS))
  puts "Reading #{RBI_CONSTANTS}"
  rbi = JSON.parse(File.read(RBI_CONSTANTS))
  [source, rbi]
end

#real_name(mod) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 78

def real_name(mod)
  constant_cache.name_by_class(mod)
end

#require_everything ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 62

def require_everything
  puts "Requiring all of your code"
  Sorbet::Private::RequireEverything.require_everything
end

#rm_dir ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 58

def rm_dir
  FileUtils.rm_r(TMP_PATH)
end

#serialize_alias(source_entry, rbi_entry, my_klass, source_symbols, rbi_symbols) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 293

def serialize_alias(source_entry, rbi_entry, my_klass, source_symbols, rbi_symbols)
  return if rbi_entry["kind"] != "STATIC_FIELD"
  return if source_entry == rbi_entry
  if source_entry
    is_stub = source_entry['superClass'] && source_symbols[source_entry['superClass']] == 'Sorbet::Private::Static::StubModule'
    if !is_stub
      return
    end
  end
  return if !rbi_entry["aliasTo"]

  fqn = rbi_symbols[rbi_entry["id"]]
  other_fqn = rbi_symbols[rbi_entry["aliasTo"]]
  return if looks_like_stub_name(fqn)
  ret = String.new
  ret << "#{fqn} = #{other_fqn}\n"
  return ret
end

#serialize_class(source_entry, rbi_entry, klass, source_symbols, rbi_symbols, source_by_name) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 213

def serialize_class(source_entry, rbi_entry, klass, source_symbols, rbi_symbols, source_by_name)
  return if rbi_entry["kind"] != "CLASS_OR_MODULE"

  name = rbi_entry["name"]["name"]
  if name.start_with?('<Class:')
    name = name.sub('<Class:', '').sub('>', '')
    my_klass_is_singleton = true
  else
    my_klass_is_singleton = false
  end
  begin
    my_klass = klass.const_get(name, false) # rubocop:disable PrisonGuard/NoDynamicConstAccess
  rescue LoadError, NameError, ArgumentError => e
    return "# #{e.message.gsub("\n", "\n# ")}"
  end

  return if !Sorbet::Private::RealStdlib.real_is_a?(my_klass, Class) && !Sorbet::Private::RealStdlib.real_is_a?(my_klass, Module)

  # We specifically don't typecheck anything in T:: since it is hardcoded
  # into sorbet. We don't include anything in Sorbet::Private:: because
  # it's private.
  return if ['T', 'Sorbet::Private'].include?(real_name(my_klass))

  source_type = nil
  if !source_entry
    if source_by_name[name]
      source_type = source_by_name[name]["kind"]
    end
  else
    source_type = source_entry["kind"]
  end
  if source_type && source_type != "CLASS_OR_MODULE"
    return "# The source says #{real_name(my_klass)} is a #{source_type} but reflection says it is a #{rbi_entry['kind']}"
  end

  if !source_entry
    source_children = []
    source_mixins = []
    is_stub = true
  else
    source_children = source_entry.fetch("children", [])
    source_mixins = source_entry.fetch("mixins", [])
    is_stub = source_entry['superClass'] && source_symbols[source_entry['superClass']] == 'Sorbet::Private::Static::StubModule'
  end
  rbi_children = rbi_entry.fetch("children", [])
  rbi_mixins = rbi_entry.fetch("mixins", [])

  methods = serialize_methods(source_children, rbi_children, my_klass, my_klass_is_singleton)
  includes = serialize_includes(source_mixins, rbi_mixins, my_klass, my_klass_is_singleton, source_symbols, rbi_symbols)
  values = serialize_values(source_children, rbi_children, my_klass, source_symbols)

  ret = []
  if !without_errors(methods).empty? || !without_errors(includes).empty? || !without_errors(values).empty? || is_stub
    fqn = real_name(my_klass)
    if fqn
      klass_str = String.new
      klass_str << (Sorbet::Private::RealStdlib.real_is_a?(my_klass, Class) ? "class #{fqn}\n" : "module #{fqn}\n")
      klass_str << includes.join("\n")
      klass_str << "\n" unless klass_str.end_with?("\n")
      klass_str << methods.join("\n")
      klass_str << "\n" unless klass_str.end_with?("\n")
      klass_str << values.join("\n")
      klass_str << "\n" unless klass_str.end_with?("\n")
      klass_str << "end\n"
      ret << klass_str
    end
  end

  children = serialize_constants(source_children, rbi_children, my_klass, my_klass_is_singleton, source_symbols, rbi_symbols)
  if children != ""
    ret << children
  end

  ret.empty? ? nil : ret.join("\n")
end

#serialize_constants(source, rbi, klass, is_singleton, source_symbols, rbi_symbols) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 196

def serialize_constants(source, rbi, klass, is_singleton, source_symbols, rbi_symbols)
  source_by_name = source.map {|v| [v["name"]["name"], v]}.to_h
  ret = []

  rbi.each do |rbi_entry|
    # skip duplicated constant fields
    next if rbi_entry["name"]["kind"] == "UNIQUE" and rbi_entry["name"]["unique"] == "MANGLE_RENAME"

    source_entry = source_by_name[rbi_entry["name"]["name"]]

    ret << serialize_alias(source_entry, rbi_entry, klass, source_symbols, rbi_symbols)
    ret << serialize_class(source_entry, rbi_entry, klass, source_symbols, rbi_symbols, source_by_name)
  end

  ret.compact.join("\n")
end

#symbols_id_to_name(entry, prefix) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 176

def symbols_id_to_name(entry, prefix)
  ret = {}
  symbols_id_to_name_real(entry, prefix, ret)
  ret
end

#write_constants ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 102

def write_constants
  puts "Printing your code's symbol table into #{SOURCE_CONSTANTS}"
  io = IO.popen(
    [
      File.realpath("#{__dir__}/../bin/srb"),
      'tc',
      '--print=symbol-table-full-json',
      '--stdout-hup-hack',
      '--silence-dev-message',
      '--no-error-count',
      '-e', # this is additive with any files / dirs
      '""',
    ],
    err: SOURCE_CONSTANTS_ERR
  )
  File.write(SOURCE_CONSTANTS, io.read)
  io.close
  raise "Your source can't be read by Sorbet.\nYou can try `find . -type f | xargs -L 1 -t bundle exec srb tc --no-config --isolate-error-code 1000` and hopefully the last file it is processing before it dies is the culprit.\nIf not, maybe the errors in this file will help: #{SOURCE_CONSTANTS_ERR}" if File.read(SOURCE_CONSTANTS).empty?

  puts "Printing #{TMP_RBI}'s symbol table into #{RBI_CONSTANTS}"
  io = IO.popen(
    [
      {'SRB_SKIP_GEM_RBIS' => 'true'},
      File.realpath("#{__dir__}/../bin/srb"),
      'tc',
      # Make sure we don't load a sorbet/config in your cwd
      '--no-config',
      '--print=symbol-table-full-json',
      # The hidden-definition serializer is not smart enough to put T::Enum
      # constants it discovers inside an `enums do` block. We probably want
      # to come up with a better long term solution here.
      '--suppress-error-code=3506',
      # Method redefined with mismatched argument is ok since sometime
      # people monkeypatch over method
      '--suppress-error-code=4010',
      # Redefining constant is needed because we serialize things both as
      # aliases and in-class constants.
      '--suppress-error-code=4012',
      # Invalid nesting is ok because we don't generate all the intermediate
      # namespaces for aliases
      '--suppress-error-code=4015',
      '--stdout-hup-hack',
      '--silence-dev-message',
      '--no-error-count',
      TMP_RBI,
    ],
    err: RBI_CONSTANTS_ERR
  )
  File.write(RBI_CONSTANTS, io.read)
  io.close
  raise "#{TMP_RBI} had unexpected errors. Check this file for a clue: #{RBI_CONSTANTS_ERR}" unless $?.success?
end

#write_diff(source, rbi) ⇒ Object 



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# File 'lib/hidden-definition-finder.rb', line 163

def write_diff(source, rbi)
  puts "Building rbi id to symbol map"
  rbi_symbols = symbols_id_to_name(rbi, '')
  puts "Building source id to symbol map"
  source_symbols = symbols_id_to_name(source, '')
  puts "Writing #{DIFF_RBI}"
  diff = serialize_constants(
    source.fetch("children", []),
    rbi.fetch("children", []),
    Object, false, source_symbols, rbi_symbols)
  File.write(DIFF_RBI, diff)
end