class TypeProf::Core::AST

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 22
def self.create_node(raw_node, lenv, use_result = true)
  while true
    case raw_node.type
    when :parentheses_node
      raw_node = raw_node.body
    when :implicit_node
      raw_node = raw_node.value
    else
      break
    end
  end

  case raw_node.type

  # definition
  when :statements_node then StatementsNode.new(raw_node, lenv, use_result)
  when :module_node then ModuleNode.new(raw_node, lenv, use_result)
  when :class_node then ClassNode.new(raw_node, lenv, use_result)
  when :singleton_class_node then SingletonClassNode.new(raw_node, lenv, use_result)
  when :def_node then DefNode.new(raw_node, lenv, use_result)
  when :alias_method_node then AliasNode.new(raw_node, lenv)
  when :undef_node then UndefNode.new(raw_node, lenv)

  # control
  when :and_node then AndNode.new(raw_node, lenv)
  when :or_node then OrNode.new(raw_node, lenv)
  when :if_node then IfNode.new(raw_node, lenv)
  when :unless_node then UnlessNode.new(raw_node, lenv)
  when :case_node then CaseNode.new(raw_node, lenv)
  when :case_match_node then CaseMatchNode.new(raw_node, lenv)
  when :while_node then WhileNode.new(raw_node, lenv)
  when :until_node then UntilNode.new(raw_node, lenv)
  when :break_node then BreakNode.new(raw_node, lenv)
  when :next_node then NextNode.new(raw_node, lenv)
  when :redo_node then RedoNode.new(raw_node, lenv)
  when :return_node then ReturnNode.new(raw_node, lenv)
  when :begin_node then BeginNode.new(raw_node, lenv)
  when :retry_node then RetryNode.new(raw_node, lenv)
  when :rescue_modifier_node then RescueModifierNode.new(raw_node, lenv)

  # constants
  when :constant_read_node, :constant_path_node
    ConstantReadNode.new(raw_node, lenv)
  when :constant_write_node, :constant_path_write_node
    ConstantWriteNode.new(raw_node, AST.create_node(raw_node.value, lenv), lenv)
  when :constant_operator_write_node
    read = ConstantReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    ConstantWriteNode.new(raw_node, rhs, lenv)
  when :constant_or_write_node
    read = ConstantReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    ConstantWriteNode.new(raw_node, rhs, lenv)
  when :constant_and_write_node
    read = ConstantReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    ConstantWriteNode.new(raw_node, rhs, lenv)
  when :constant_path_operator_write_node
    read = ConstantReadNode.new(raw_node.target, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    ConstantWriteNode.new(raw_node, rhs, lenv)
  when :constant_path_or_write_node
    read = ConstantReadNode.new(raw_node.target, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    ConstantWriteNode.new(raw_node, rhs, lenv)
  when :constant_path_and_write_node
    read = ConstantReadNode.new(raw_node.target, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    ConstantWriteNode.new(raw_node, rhs, lenv)

  # variables
  when :local_variable_read_node
    LocalVariableReadNode.new(raw_node, lenv)
  when :local_variable_write_node
    LocalVariableWriteNode.new(raw_node, AST.create_node(raw_node.value, lenv), lenv)
  when :local_variable_operator_write_node
    read = LocalVariableReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    LocalVariableWriteNode.new(raw_node, rhs, lenv)
  when :local_variable_or_write_node
    read = LocalVariableReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    LocalVariableWriteNode.new(raw_node, rhs, lenv)
  when :local_variable_and_write_node
    read = LocalVariableReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    LocalVariableWriteNode.new(raw_node, rhs, lenv)
  when :instance_variable_read_node
    InstanceVariableReadNode.new(raw_node, lenv)
  when :instance_variable_write_node
    InstanceVariableWriteNode.new(raw_node, AST.create_node(raw_node.value, lenv), lenv)
  when :instance_variable_operator_write_node
    read = InstanceVariableReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    InstanceVariableWriteNode.new(raw_node, rhs, lenv)
  when :instance_variable_or_write_node
    read = InstanceVariableReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    InstanceVariableWriteNode.new(raw_node, rhs, lenv)
  when :instance_variable_and_write_node
    read = InstanceVariableReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    InstanceVariableWriteNode.new(raw_node, rhs, lenv)
  when :class_variable_read_node
    ClassVariableReadNode.new(raw_node, lenv)
  when :class_variable_write_node
    ClassVariableWriteNode.new(raw_node, AST.create_node(raw_node.value, lenv), lenv)
  when :class_variable_operator_write_node
    read = ClassVariableReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
  when :class_variable_or_write_node
    read = ClassVariableReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    ClassVariableWriteNode.new(raw_node, rhs, lenv)
  when :class_variable_and_write_node
    read = ClassVariableReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    ClassVariableWriteNode.new(raw_node, rhs, lenv)
  when :global_variable_read_node
    GlobalVariableReadNode.new(raw_node, lenv)
  when :global_variable_write_node
    GlobalVariableWriteNode.new(raw_node, AST.create_node(raw_node.value, lenv), lenv)
  when :global_variable_operator_write_node
    read = GlobalVariableReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    GlobalVariableWriteNode.new(raw_node, rhs, lenv)
  when :global_variable_or_write_node
    read = GlobalVariableReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    GlobalVariableWriteNode.new(raw_node, rhs, lenv)
  when :global_variable_and_write_node
    read = GlobalVariableReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    GlobalVariableWriteNode.new(raw_node, rhs, lenv)
  when :numbered_reference_read_node
    RegexpReferenceReadNode.new(raw_node, lenv)
  when :back_reference_read_node
    RegexpReferenceReadNode.new(raw_node, lenv)

  # assignment targets
  when :index_operator_write_node
    read = IndexReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    IndexWriteNode.new(raw_node, rhs, lenv)
  when :index_or_write_node
    read = IndexReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    IndexWriteNode.new(raw_node, rhs, lenv)
  when :index_and_write_node
    read = IndexReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    IndexWriteNode.new(raw_node, rhs, lenv)
  when :call_operator_write_node
    read = CallReadNode.new(raw_node, lenv)
    rhs = OperatorNode.new(raw_node, read, lenv)
    CallWriteNode.new(raw_node, rhs, lenv)
  when :call_or_write_node
    read = CallReadNode.new(raw_node, lenv)
    rhs = OrNode.new(raw_node, read, raw_node.value, lenv)
    CallWriteNode.new(raw_node, rhs, lenv)
  when :call_and_write_node
    read = CallReadNode.new(raw_node, lenv)
    rhs = AndNode.new(raw_node, read, raw_node.value, lenv)
    CallWriteNode.new(raw_node, rhs, lenv)
  when :multi_write_node then MultiWriteNode.new(raw_node, lenv)
  when :match_write_node then MatchWriteNode.new(raw_node, lenv)

  # value
  when :self_node then SelfNode.new(raw_node, lenv)
  when :nil_node then NilNode.new(raw_node, lenv)
  when :true_node then TrueNode.new(raw_node, lenv)
  when :false_node then FalseNode.new(raw_node, lenv)
  when :integer_node then IntegerNode.new(raw_node, lenv)
  when :float_node then FloatNode.new(raw_node, lenv)
  when :rational_node then RationalNode.new(raw_node, lenv)
  when :imaginary_node then ComplexNode.new(raw_node, lenv)
  when :source_file_node then StringNode.new(raw_node, lenv, "")
  when :source_line_node then IntegerNode.new(raw_node, lenv, 0)
  when :source_encoding_node then SourceEncodingNode.new(raw_node, lenv)
  when :symbol_node then SymbolNode.new(raw_node, lenv)
  when :interpolated_symbol_node then InterpolatedSymbolNode.new(raw_node, lenv)
  when :string_node then StringNode.new(raw_node, lenv, raw_node.content)
  when :interpolated_string_node then InterpolatedStringNode.new(raw_node, lenv)
  when :x_string_node then StringNode.new(raw_node, lenv, "")
  when :interpolated_x_string_node then InterpolatedStringNode.new(raw_node, lenv)
  when :regular_expression_node then RegexpNode.new(raw_node, lenv)
  when :interpolated_regular_expression_node then InterpolatedRegexpNode.new(raw_node, lenv)
  when :match_last_line_node then MatchLastLineNode.new(raw_node, lenv)
  when :interpolated_match_last_line_node then InterpolatedMatchLastLineNode.new(raw_node, lenv)
  when :range_node then RangeNode.new(raw_node, lenv)
  when :array_node then ArrayNode.new(raw_node, lenv)
  when :hash_node then HashNode.new(raw_node, lenv, false)
  when :keyword_hash_node then HashNode.new(raw_node, lenv, true)
  when :lambda_node then LambdaNode.new(raw_node, lenv)

  # misc
  when :defined_node then DefinedNode.new(raw_node, lenv)
  when :splat_node then SplatNode.new(raw_node, lenv)
  when :for_node then ForNode.new(raw_node, lenv)
  when :alias_global_variable_node then AliasGlobalVariableNode.new(raw_node, lenv)
  when :post_execution_node then PostExecutionNode.new(raw_node, lenv)
  when :flip_flop_node then FlipFlopNode.new(raw_node, lenv)
  when :shareable_constant_node then create_node(raw_node.write, lenv)
  when :match_required_node then MatchRequiredNode.new(raw_node, lenv)
  when :match_predicate_node then MatchPreidcateNode.new(raw_node, lenv)

  # call
  when :super_node then SuperNode.new(raw_node, lenv)
  when :forwarding_super_node then ForwardingSuperNode.new(raw_node, lenv)
  when :yield_node then YieldNode.new(raw_node, lenv)
  when :call_node
    if !raw_node.receiver
      # TODO: handle them only when it is directly under class or module
      case raw_node.name
      when :include
        return IncludeMetaNode.new(raw_node, lenv)
      when :attr_reader
        return AttrReaderMetaNode.new(raw_node, lenv)
      when :attr_accessor
        return AttrAccessorMetaNode.new(raw_node, lenv)
      end
    end
    CallNode.new(raw_node, lenv)
  else
    pp raw_node
    raise "not supported yet: #{ raw_node.type }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast/value.rb, line 3
def self.create_part_node(raw_part, lenv)
  case raw_part.type
  when :string_node
    AST.create_node(raw_part, lenv)
  when :embedded_statements_node
    raw_part.statements ? AST.create_node(raw_part.statements, lenv) : DummyNilNode.new(TypeProf::CodeRange.from_node(raw_part), lenv)
  when :embedded_variable_node
    AST.create_node(raw_part.variable, lenv)
  else
    raise "unknown symbol part: #{ raw_part.type }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 276
def self.create_pattern_node(raw_node, lenv)
  while true
    case raw_node.type
    when :parentheses_node
      raw_node = raw_node.body
    when :implicit_node
      raw_node = raw_node.value
    else
      break
    end
  end

  case raw_node.type
  when :array_pattern_node then ArrayPatternNode.new(raw_node, lenv)
  when :hash_pattern_node then HashPatternNode.new(raw_node, lenv)
  when :find_pattern_node then FindPatternNode.new(raw_node, lenv)

  when :alternation_pattern_node then AltPatternNode.new(raw_node, lenv)

  when :capture_pattern_node then CapturePatternNode.new(raw_node, lenv)

  when :if_node then IfPatternNode.new(raw_node, lenv)

  when :pinned_variable_node then PinnedPatternNode.new(raw_node, lenv)
  when :pinned_expression_node then PinnedPatternNode.new(raw_node, lenv)

  when :local_variable_target_node
    dummy_node = DummyRHSNode.new(TypeProf::CodeRange.from_node(raw_node.location), lenv)
    LocalVariableWriteNode.new(raw_node, dummy_node, lenv)

  when :constant_read_node, :constant_path_node
    ConstantReadNode.new(raw_node, lenv)

  when :self_node then SelfNode.new(raw_node, lenv)
  when :nil_node then NilNode.new(raw_node, lenv)
  when :true_node then TrueNode.new(raw_node, lenv)
  when :false_node then FalseNode.new(raw_node, lenv)
  when :integer_node then IntegerNode.new(raw_node, lenv)
  when :float_node then FloatNode.new(raw_node, lenv)
  when :rational_node then RationalNode.new(raw_node, lenv)
  when :imaginary_node then ComplexNode.new(raw_node, lenv)
  when :source_file_node then StringNode.new(raw_node, lenv, "")
  when :source_line_node then IntegerNode.new(raw_node, lenv, 0)
  when :source_encoding_node then SourceEncodingNode.new(raw_node, lenv)
  when :symbol_node then SymbolNode.new(raw_node, lenv)
  when :interpolated_symbol_node then InterpolatedSymbolNode.new(raw_node, lenv)
  when :string_node then StringNode.new(raw_node, lenv, raw_node.content)
  when :interpolated_string_node then InterpolatedStringNode.new(raw_node, lenv)
  when :x_string_node then StringNode.new(raw_node, lenv, "")
  when :interpolated_x_string_node then InterpolatedStringNode.new(raw_node, lenv)
  when :regular_expression_node then RegexpNode.new(raw_node, lenv)
  when :interpolated_regular_expression_node then InterpolatedRegexpNode.new(raw_node, lenv)

  when :array_node then ArrayNode.new(raw_node, lenv) # for %w[foo bar]
  when :range_node then RangeNode.new(raw_node, lenv) # TODO: support range pattern correctly

  else
    raise "unknown pattern node type: #{ raw_node.type }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 373
def self.create_rbs_decl(raw_decl, lenv)
  case raw_decl
  when RBS::AST::Declarations::Class
    SigClassNode.new(raw_decl, lenv)
  when RBS::AST::Declarations::Module
    SigModuleNode.new(raw_decl, lenv)
  when RBS::AST::Declarations::Interface
    SigInterfaceNode.new(raw_decl, lenv)
  when RBS::AST::Declarations::Constant
    SigConstNode.new(raw_decl, lenv)
  when RBS::AST::Declarations::AliasDecl
  when RBS::AST::Declarations::TypeAlias
    SigTypeAliasNode.new(raw_decl, lenv)
    # TODO: check
  when RBS::AST::Declarations::Global
    SigGlobalVariableNode.new(raw_decl, lenv)
  else
    raise "unsupported: #{ raw_decl.class }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 418
def self.create_rbs_func_type(raw_decl, raw_type_params, raw_block, lenv)
  SigFuncType.new(raw_decl, raw_type_params, raw_block, lenv)
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 394
def self.create_rbs_member(raw_decl, lenv)
  case raw_decl
  when RBS::AST::Members::MethodDefinition
    SigDefNode.new(raw_decl, lenv)
  when RBS::AST::Members::Include
    SigIncludeNode.new(raw_decl, lenv)
  when RBS::AST::Members::Extend
  when RBS::AST::Members::Public
  when RBS::AST::Members::Private
  when RBS::AST::Members::Alias
    SigAliasNode.new(raw_decl, lenv)
  when RBS::AST::Members::AttrReader
    SigAttrReaderNode.new(raw_decl, lenv)
  when RBS::AST::Members::AttrWriter
    SigAttrWriterNode.new(raw_decl, lenv)
  when RBS::AST::Members::AttrAccessor
    SigAttrAccessorNode.new(raw_decl, lenv)
  when RBS::AST::Declarations::Base
    self.create_rbs_decl(raw_decl, lenv)
  else
    raise "unsupported: #{ raw_decl.class }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 422
def self.create_rbs_type(raw_decl, lenv)
  case raw_decl
  when RBS::Types::Bases::Nil
    SigTyBaseNilNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Bool
    SigTyBaseBoolNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Self
    SigTyBaseSelfNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Void
    SigTyBaseVoidNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Any
    SigTyBaseAnyNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Top
    SigTyBaseTopNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Bottom
    SigTyBaseBottomNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Instance
    SigTyBaseInstanceNode.new(raw_decl, lenv)
  when RBS::Types::Bases::Class
    SigTyBaseClassNode.new(raw_decl, lenv)

  when RBS::Types::Alias
    SigTyAliasNode.new(raw_decl, lenv)
  when RBS::Types::Union
    SigTyUnionNode.new(raw_decl, lenv)
  when RBS::Types::Intersection
    SigTyIntersectionNode.new(raw_decl, lenv)
  when RBS::Types::ClassSingleton
    SigTySingletonNode.new(raw_decl, lenv)
  when RBS::Types::ClassInstance
    SigTyInstanceNode.new(raw_decl, lenv)
  when RBS::Types::Tuple
    SigTyTupleNode.new(raw_decl, lenv)
  when RBS::Types::Record
    SigTyRecordNode.new(raw_decl, lenv)
  when RBS::Types::Interface
    SigTyInterfaceNode.new(raw_decl, lenv)
  when RBS::Types::Proc
    SigTyProcNode.new(raw_decl, lenv)
  when RBS::Types::Variable
    SigTyVarNode.new(raw_decl, lenv)
  when RBS::Types::Optional
    SigTyOptionalNode.new(raw_decl, lenv)
  when RBS::Types::Literal
    SigTyLiteralNode.new(raw_decl, lenv)
  else
    raise "unknown RBS type: #{ raw_decl.class }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 251
def self.create_target_node(raw_node, lenv)
  dummy_node = DummyRHSNode.new(TypeProf::CodeRange.from_node(raw_node.location), lenv)
  case raw_node.type
  when :local_variable_target_node
    LocalVariableWriteNode.new(raw_node, dummy_node, lenv)
  when :instance_variable_target_node
    InstanceVariableWriteNode.new(raw_node, dummy_node, lenv)
  when :class_variable_target_node
    ClassVariableWriteNode.new(raw_node, dummy_node, lenv)
  when :global_variable_target_node
    GlobalVariableWriteNode.new(raw_node, dummy_node, lenv)
  when :constant_target_node
    ConstantWriteNode.new(raw_node, dummy_node, lenv)
  when :constant_path_target_node
    ConstantWriteNode.new(raw_node, dummy_node, lenv)
  when :index_target_node
    IndexWriteNode.new(raw_node, dummy_node, lenv)
  when :call_target_node
    CallWriteNode.new(raw_node, dummy_node, lenv)
  else
    pp raw_node
    raise "not supported yet: #{ raw_node.type }"
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast/method.rb, line 3
def self.get_rbs_comment_before(raw_node, lenv)
  comments = Fiber[:comments]
  i = comments.bsearch_index {|comment| comment.location.start_line >= raw_node.location.start_line } || comments.size
  lineno = raw_node.location.start_line
  rbs_comments = []
  while i > 0
    i -= 1
    lineno -= 1
    comment = comments[i]
    comment_loc = comment.location
    comment_text = comment_loc.slice
    if comment_loc.start_line == lineno && comment_text.start_with?("#:")
      rbs_comments[comment_loc.start_line] = " " * (comment_loc.start_column + 2) + comment_text[2..]
    else
      break
    end
  end
  return nil if rbs_comments.empty?
  rbs_comments = rbs_comments.map {|line| line || "" }.join("\n")
  method_type = RBS::Parser.parse_method_type(rbs_comments)
  if method_type
    AST.create_rbs_func_type(method_type, method_type.type_params, method_type.block, lenv)
  else
    nil
  end
rescue RBS::ParsingError
  # TODO: report the error
  nil
end

# File typeprof-0.30.1/lib/typeprof/core/ast/control.rb, line 3
def self.is_a_class(node)
  if node.is_a?(CallNode)
    recv = node.recv
    if recv.is_a?(LocalVariableReadNode)
      if node.positional_args && node.positional_args.size == 1 && node.positional_args[0].static_ret
        # TODO: need static resolusion of a constant
        return [recv.var, node.positional_args[0].static_ret]
      end
    end
  end
  return nil
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 337
def self.parse_cpath(raw_node, cref)
  names = []
  while raw_node
    case raw_node.type
    when :constant_read_node
      names << raw_node.name
      break
    when :constant_path_node, :constant_path_target_node
      if raw_node.parent
        # temporarily support old Prism https://bugs.ruby-lang.org/issues/20467
        names << (raw_node.respond_to?(:name) ? raw_node.name : raw_node.child.name)
        raw_node = raw_node.parent
      else
        return names.reverse
      end
    when :self_node
      break if cref.scope_level == :class
      return nil
    else
      return nil
    end
  end
  return cref.cpath + names.reverse
end

# File typeprof-0.30.1/lib/typeprof/core/ast/method.rb, line 33
def self.parse_params(tbl, raw_args, lenv)
  unless raw_args
    return {
      req_positionals: [],
      opt_positionals: [],
      opt_positional_defaults: [],
      rest_positionals: nil,
      post_positionals: [],
      req_keywords: [],
      opt_keywords: [],
      opt_keyword_defaults: [],
      rest_keywords: nil,
      block: nil,
    }
  end

  args_code_ranges = []
  req_positionals = []
  raw_args.requireds.each do |n|
    args_code_ranges << TypeProf::CodeRange.from_node(n.location)
    req_positionals << (n.is_a?(Prism::MultiTargetNode) ? nil : n.name)
  end

  # pre_init = args[1]

  opt_positionals = []
  opt_positional_defaults = []
  raw_args.optionals.each do |n|
    opt_positionals << n.name
    opt_positional_defaults << AST.create_node(n.value, lenv)
  end

  post_positionals = raw_args.posts.map {|n| (n.is_a?(Prism::MultiTargetNode) ? nil : n.name) }

  rest_positionals = raw_args.rest&.name

  req_keywords = []
  opt_keywords = []
  opt_keyword_defaults = []

  raw_args.keywords.each do |kw|
    case kw.type
    when :required_keyword_parameter_node
      req_keywords << kw.name
    when :optional_keyword_parameter_node
      opt_keywords << kw.name
      opt_keyword_defaults << AST.create_node(kw.value, lenv)
    end
  end

  case raw_args.keyword_rest
  when Prism::KeywordRestParameterNode
    rest_keywords = raw_args.keyword_rest.name if raw_args.keyword_rest
  when Prism::NoKeywordsParameterNode
    # what to do?
  when nil
    # nothing to do
  else
    raise "unexpected keyword rest: #{ raw_args.keyword_rest.class }"
  end

  block = raw_args.block.name if raw_args.block

  {
    req_positionals:,
    opt_positionals:,
    opt_positional_defaults:,
    rest_positionals:,
    post_positionals:,
    req_keywords:,
    opt_keywords:,
    opt_keyword_defaults:,
    rest_keywords:,
    block:,
    args_code_ranges:
  }
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 3
def self.parse_rb(path, src)
  result = Prism.parse(src)

  return nil unless result.errors.empty?

  # comments, errors, magic_comments
  raw_scope = result.value

  raise unless raw_scope.type == :program_node

  Fiber[:comments] = result.comments

  cref = CRef::Toplevel
  lenv = LocalEnv.new(path, cref, {}, [])

  ProgramNode.new(raw_scope, lenv)
end

# File typeprof-0.30.1/lib/typeprof/core/ast.rb, line 362
def self.parse_rbs(path, src)
  _buffer, _directives, raw_decls = RBS::Parser.parse_signature(src)

  cref = CRef::Toplevel
  lenv = LocalEnv.new(path, cref, {}, [])

  raw_decls.map do |raw_decl|
    AST.create_rbs_decl(raw_decl, lenv)
  end
end

# File typeprof-0.30.1/lib/typeprof/core/ast/sig_decl.rb, line 3
def self.resolve_rbs_name(name, lenv)
  if name.namespace.absolute?
    name.namespace.path + [name.name]
  else
    lenv.cref.cpath + name.namespace.path + [name.name]
  end
end