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Class: Prism::Translation::Ripper

Relationships & Source Files
Namespace Children
Classes:
Extension / Inclusion / Inheritance Descendants
Subclasses:
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Compiler
Instance Chain:
self, Compiler
Inherits: Compiler
  • ::Object
Defined in: lib/prism/translation/ripper.rb,
lib/prism/translation/ripper/filter.rb,
lib/prism/translation/ripper/lexer.rb,
lib/prism/translation/ripper/sexp.rb

Overview

This class provides a compatibility layer between prism and Ripper. It functions by parsing the entire tree first and then walking it and executing each of the Ripper callbacks as it goes. To use this class, you treat Ripper effectively as you would treat the Ripper class.

Note that this class will serve the most common use cases, but Ripper’s API is extensive and undocumented. It relies on reporting the state of the parser at any given time. We do our best to replicate that here, but because it is a different architecture it is not possible to perfectly replicate the behavior of Ripper.

The main known difference is that we may omit dispatching some events in some cases. This impacts the following events:

  • on_assign_error

  • on_comma

  • on_ignored_nl

  • on_ignored_sp

  • on_kw

  • on_label_end

  • on_lbrace

  • on_lbracket

  • on_lparen

  • on_nl

  • on_op

  • on_operator_ambiguous

  • on_rbrace

  • on_rbracket

  • on_rparen

  • on_semicolon

  • on_sp

  • on_symbeg

  • on_tstring_beg

  • on_tstring_end

Constant Summary

  • BINARY_OPERATORS = private

    A list of all of the Ruby binary operators.

    # File 'lib/prism/translation/ripper.rb', line 349
    [
      :!=,
      :!~,
      :=~,
      :==,
      :===,
      :<=>,
      :>,
      :>=,
      :<,
      :<=,
      :&,
      :|,
      :^,
      :>>,
      :<<,
      :-,
      :+,
      :%,
      :/,
      :*,
      :**
    ]
  • EVENTS =

    This array contains name of all ripper events.

    # File 'lib/prism/translation/ripper.rb', line 301
    PARSER_EVENTS + SCANNER_EVENTS
  • EXPR_ARG_ANY = Internal use only
    # File 'lib/prism/translation/ripper.rb', line 460
    EXPR_ARG | EXPR_CMDARG
  • EXPR_BEG_ANY = Internal use only
    # File 'lib/prism/translation/ripper.rb', line 459
    EXPR_BEG | EXPR_MID | EXPR_CLASS
  • EXPR_END_ANY = Internal use only
    # File 'lib/prism/translation/ripper.rb', line 461
    EXPR_END | EXPR_ENDARG | EXPR_ENDFN
  • EXPR_NONE = Internal use only
    # File 'lib/prism/translation/ripper.rb', line 457
    0
  • EXPR_VALUE = Internal use only
    # File 'lib/prism/translation/ripper.rb', line 458
    EXPR_BEG
  • KEYWORDS = private

    A list of all of the Ruby keywords.

    # File 'lib/prism/translation/ripper.rb', line 304
    [
      "alias",
      "and",
      "begin",
      "BEGIN",
      "break",
      "case",
      "class",
      "def",
      "defined?",
      "do",
      "else",
      "elsif",
      "end",
      "END",
      "ensure",
      "false",
      "for",
      "if",
      "in",
      "module",
      "next",
      "nil",
      "not",
      "or",
      "redo",
      "rescue",
      "retry",
      "return",
      "self",
      "super",
      "then",
      "true",
      "undef",
      "unless",
      "until",
      "when",
      "while",
      "yield",
      "__ENCODING__",
      "__FILE__",
      "__LINE__"
    ]
  • LEX_STATE_NAMES = private Internal use only

    Ripper-internal bitflags.

    # File 'lib/prism/translation/ripper.rb', line 449
    %i[
      BEG END ENDARG ENDFN ARG CMDARG MID FNAME DOT CLASS LABEL LABELED FITEM
    ].map.with_index.to_h { |name, i| [2 ** i, name] }.freeze
  • PARSER_EVENTS =

    This array contains name of parser events.

    # File 'lib/prism/translation/ripper.rb', line 295
    PARSER_EVENT_TABLE.keys
  • PARSER_EVENT_TABLE =

    This contains a table of all of the parser events and their corresponding arity.

    # File 'lib/prism/translation/ripper.rb', line 96
    {
      BEGIN: 1,
      END: 1,
      alias: 2,
      alias_error: 2,
      aref: 2,
      aref_field: 2,
      arg_ambiguous: 1,
      arg_paren: 1,
      args_add: 2,
      args_add_block: 2,
      args_add_star: 2,
      args_forward: 0,
      args_new: 0,
      array: 1,
      aryptn: 4,
      assign: 2,
      assign_error: 2,
      assoc_new: 2,
      assoc_splat: 1,
      assoclist_from_args: 1,
      bare_assoc_hash: 1,
      begin: 1,
      binary: 3,
      block_var: 2,
      blockarg: 1,
      bodystmt: 4,
      brace_block: 2,
      break: 1,
      call: 3,
      case: 2,
      class: 3,
      class_name_error: 2,
      command: 2,
      command_call: 4,
      const_path_field: 2,
      const_path_ref: 2,
      const_ref: 1,
      def: 3,
      defined: 1,
      defs: 5,
      do_block: 2,
      dot2: 2,
      dot3: 2,
      dyna_symbol: 1,
      else: 1,
      elsif: 3,
      ensure: 1,
      excessed_comma: 0,
      fcall: 1,
      field: 3,
      fndptn: 4,
      for: 3,
      hash: 1,
      heredoc_dedent: 2,
      hshptn: 3,
      if: 3,
      if_mod: 2,
      ifop: 3,
      in: 3,
      kwrest_param: 1,
      lambda: 2,
      magic_comment: 2,
      massign: 2,
      method_add_arg: 2,
      method_add_block: 2,
      mlhs_add: 2,
      mlhs_add_post: 2,
      mlhs_add_star: 2,
      mlhs_new: 0,
      mlhs_paren: 1,
      module: 2,
      mrhs_add: 2,
      mrhs_add_star: 2,
      mrhs_new: 0,
      mrhs_new_from_args: 1,
      next: 1,
      nokw_param: 1,
      opassign: 3,
      operator_ambiguous: 2,
      param_error: 2,
      params: 7,
      paren: 1,
      parse_error: 1,
      program: 1,
      qsymbols_add: 2,
      qsymbols_new: 0,
      qwords_add: 2,
      qwords_new: 0,
      redo: 0,
      regexp_add: 2,
      regexp_literal: 2,
      regexp_new: 0,
      rescue: 4,
      rescue_mod: 2,
      rest_param: 1,
      retry: 0,
      return: 1,
      return0: 0,
      sclass: 2,
      stmts_add: 2,
      stmts_new: 0,
      string_add: 2,
      string_concat: 2,
      string_content: 0,
      string_dvar: 1,
      string_embexpr: 1,
      string_literal: 1,
      super: 1,
      symbol: 1,
      symbol_literal: 1,
      symbols_add: 2,
      symbols_new: 0,
      top_const_field: 1,
      top_const_ref: 1,
      unary: 2,
      undef: 1,
      unless: 3,
      unless_mod: 2,
      until: 2,
      until_mod: 2,
      var_alias: 2,
      var_field: 1,
      var_ref: 1,
      vcall: 1,
      void_stmt: 0,
      when: 3,
      while: 2,
      while_mod: 2,
      word_add: 2,
      word_new: 0,
      words_add: 2,
      words_new: 0,
      xstring_add: 2,
      xstring_literal: 1,
      xstring_new: 0,
      yield: 1,
      yield0: 0,
      zsuper: 0
    }
  • SCANNER_EVENTS =

    This array contains name of scanner events.

    # File 'lib/prism/translation/ripper.rb', line 298
    SCANNER_EVENT_TABLE.keys
  • SCANNER_EVENT_TABLE =

    This contains a table of all of the scanner events and their corresponding arity.

    # File 'lib/prism/translation/ripper.rb', line 239
    {
      CHAR: 1,
      __end__: 1,
      backref: 1,
      backtick: 1,
      comma: 1,
      comment: 1,
      const: 1,
      cvar: 1,
      embdoc: 1,
      embdoc_beg: 1,
      embdoc_end: 1,
      embexpr_beg: 1,
      embexpr_end: 1,
      embvar: 1,
      float: 1,
      gvar: 1,
      heredoc_beg: 1,
      heredoc_end: 1,
      ident: 1,
      ignored_nl: 1,
      imaginary: 1,
      int: 1,
      ivar: 1,
      kw: 1,
      label: 1,
      label_end: 1,
      lbrace: 1,
      lbracket: 1,
      lparen: 1,
      nl: 1,
      op: 1,
      period: 1,
      qsymbols_beg: 1,
      qwords_beg: 1,
      rational: 1,
      rbrace: 1,
      rbracket: 1,
      regexp_beg: 1,
      regexp_end: 1,
      rparen: 1,
      semicolon: 1,
      sp: 1,
      symbeg: 1,
      symbols_beg: 1,
      tlambda: 1,
      tlambeg: 1,
      tstring_beg: 1,
      tstring_content: 1,
      tstring_end: 1,
      words_beg: 1,
      words_sep: 1,
      ignored_sp: 1
    }

Class Method Summary

Instance Attribute Summary

  • #column readonly

    The current column in bytes of the parser.

  • #error? ⇒ Boolean readonly

    True if the parser encountered an error during parsing.

  • #filename readonly

    The filename of the source being parsed.

  • #lineno readonly

    The current line number of the parser.

  • #source readonly

    The source that is being parsed.

Instance Method Summary

Constructor Details

.new(source, filename = "(ripper)", lineno = 1) ⇒ Ripper

Create a new Ripper object with the given source.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 482

def initialize(source, filename = "(ripper)", lineno = 1)
  if source.is_a?(IO)
    @source = source.read
  elsif source.respond_to?(:gets)
    @source = +""
    while line = source.gets
      @source << line
    end
  else
    @source = source.to_str
  end

  @filename = filename
  @lineno = lineno
  @column = 0
  @result = nil
end

Class Method Details

.lex(src, filename = "-", lineno = 1, raise_errors: false)

Tokenizes the Ruby program and returns an array of an array, which is formatted like [[lineno, column], type, token, state]. The #filename argument is mostly ignored. By default, this method does not handle syntax errors in src, use the raise_errors keyword to raise a SyntaxError for an error in src.

require "ripper"
require "pp"

pp Ripper.lex("def m(a) nil end")
#=> [[[1,  0], :on_kw,     "def", FNAME    ],
     [[1,  3], :on_sp,     " ",   FNAME    ],
     [[1,  4], :on_ident,  "m",   ENDFN    ],
     [[1,  5], :on_lparen, "(",   BEG|LABEL],
     [[1,  6], :on_ident,  "a",   ARG      ],
     [[1,  7], :on_rparen, ")",   ENDFN    ],
     [[1,  8], :on_sp,     " ",   BEG      ],
     [[1,  9], :on_kw,     "nil", END      ],
     [[1, 12], :on_sp,     " ",   END      ],
     [[1, 13], :on_kw,     "end", END      ]]
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 71

def self.lex(src, filename = "-", lineno = 1, raise_errors: false)
  result = Prism.lex_compat(src, filepath: filename, line: lineno, version: "current")

  if result.failure? && raise_errors
    raise SyntaxError, result.errors.first.message
  else
    result.value
  end
end

.lex_state_name(state)

This method is for internal use only.
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 463

def self.lex_state_name(state)
  LEX_STATE_NAMES.filter_map { |flag, name| name if state & flag != 0  }.join("|")
end

.parse(src, filename = "(ripper)", lineno = 1)

Parses the given Ruby program read from src. src must be a String or an IO or a object with a #gets method.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 45

def self.parse(src, filename = "(ripper)", lineno = 1)
  new(src, filename, lineno).parse
end

.sexp(src, filename = "-", lineno = 1, raise_errors: false)

Parses src and create S-exp tree. Returns more readable tree rather than .sexp_raw. This method is mainly for developer use. The #filename argument is mostly ignored. By default, this method does not handle syntax errors in src, returning nil in such cases. Use the raise_errors keyword to raise a SyntaxError for an error in src.

require "ripper"
require "pp"

pp Ripper.sexp("def m(a) nil end")
  #=> [:program,
       [[:def,
        [:@ident, "m", [1, 4]],
        [:paren, [:params, [[:@ident, "a", [1, 6]]], nil, nil, nil, nil, nil, nil]],
        [:bodystmt, [[:var_ref, [:@kw, "nil", [1, 9]]]], nil, nil, nil]]]]
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 393

def self.sexp(src, filename = "-", lineno = 1, raise_errors: false)
  builder = SexpBuilderPP.new(src, filename, lineno)
  sexp = builder.parse
  if builder.error?
    if raise_errors
      raise SyntaxError, builder.error
    end
  else
    sexp
  end
end

.sexp_raw(src, filename = "-", lineno = 1, raise_errors: false)

Parses src and create S-exp tree. This method is mainly for developer use. The #filename argument is mostly ignored. By default, this method does not handle syntax errors in src, returning nil in such cases. Use the raise_errors keyword to raise a SyntaxError for an error in src.

require "ripper"
require "pp"

pp Ripper.sexp_raw("def m(a) nil end")
  #=> [:program,
       [:stmts_add,
        [:stmts_new],
        [:def,
         [:@ident, "m", [1, 4]],
         [:paren, [:params, [[:@ident, "a", [1, 6]]], nil, nil, nil]],
         [:bodystmt,
          [:stmts_add, [:stmts_new], [:var_ref, [:@kw, "nil", [1, 9]]]],
          nil,
          nil,
          nil]]]]
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 428

def self.sexp_raw(src, filename = "-", lineno = 1, raise_errors: false)
  builder = SexpBuilder.new(src, filename, lineno)
  sexp = builder.parse
  if builder.error?
    if raise_errors
      raise SyntaxError, builder.error
    end
  else
    sexp
  end
end

.tokenize

Tokenizes the Ruby program and returns an array of strings. The #filename and #lineno arguments are mostly ignored, since the return value is just the tokenized input. By default, this method does not handle syntax errors in src, use the raise_errors keyword to raise a SyntaxError for an error in src.

p Ripper.tokenize("def m(a) nil end")
   # => ["def", " ", "m", "(", "a", ")", " ", "nil", " ", "end"]
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 90

def self.tokenize(...)
  lex(...).map { |token| token[2] }
end

Instance Attribute Details

#column (readonly)

The current column in bytes of the parser.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 479

attr_reader :column

#error?Boolean (readonly)

True if the parser encountered an error during parsing.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 505

def error?
  result.failure?
end

#filename (readonly)

The filename of the source being parsed.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 473

attr_reader :filename

#lineno (readonly)

The current line number of the parser.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 476

attr_reader :lineno

#source (readonly)

The source that is being parsed.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 470

attr_reader :source

Instance Method Details

#_dispatch_0 (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3481

def _dispatch_0; end

#_dispatch_1(arg) (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3482

def _dispatch_1(arg); arg end

#_dispatch_2(arg, _) (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3483

def _dispatch_2(arg, _); arg end

#_dispatch_3(arg, _, _) (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3484

def _dispatch_3(arg, _, _); arg end

#_dispatch_4(arg, _, _, _) (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3485

def _dispatch_4(arg, _, _, _); arg end

#_dispatch_5(arg, _, _, _, _) (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3486

def _dispatch_5(arg, _, _, _, _); arg end

#_dispatch_7(arg, _, _, _, _, _, _) (private)

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3487

def _dispatch_7(arg, _, _, _, _, _, _); arg end

#bounds(location) (private)

This method is for internal use only.

This method is responsible for updating lineno and column information to reflect the current node.

This method could be drastically improved with some caching on the start of every line, but for now it’s good enough.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3469

def bounds(location)
  @lineno = location.start_line
  @column = location.start_column
end

#command?(node) ⇒ Boolean (private)

This method is for internal use only.

Returns true if the given node is a command node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1237

private def command?(node)
  node.is_a?(CallNode) &&
    node.opening_loc.nil? &&
    (!node.arguments.nil? || node.block.is_a?(BlockArgumentNode)) &&
    !BINARY_OPERATORS.include?(node.name)
end

#compile_error(msg) (private)

This method is called when the parser found syntax error.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3509

def compile_error(msg)
end

#dedent_string(string, width) (private)

This method is provided by the Ripper C extension. It is called when a string needs to be dedented because of a tilde heredoc. It is expected that it will modify the string in place and return the number of bytes that were removed.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3524

def dedent_string(string, width)
  whitespace = 0
  cursor = 0

  while cursor < string.length && string[cursor].match?(/\s/) && whitespace < width
    if string[cursor] == "\t"
      whitespace = ((whitespace / 8 + 1) * 8)
      break if whitespace > width
    else
      whitespace += 1
    end

    cursor += 1
  end

  string.replace(string[cursor..])
  cursor
end

#get_arguments_and_block(arguments_node, block_node) (private)

This method is for internal use only.

Extract the arguments and block Ripper-style, which means if the block is like &b then it’s moved to arguments.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1201

private def get_arguments_and_block(arguments_node, block_node)
  arguments = arguments_node&.arguments || []
  block = block_node

  if block.is_a?(BlockArgumentNode)
    arguments += [block]
    block = nil
  end

  [arguments, block]
end

#parse

Parse the source and return the result.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 510

def parse
  result.comments.each do |comment|
    location = comment.location
    bounds(location)

    if comment.is_a?(InlineComment)
      # Inline comments always contain a newline if the line itself contains it
      if result.source.source.bytesize > comment.location.end_offset
        on_comment("#{comment.slice}\n")
      else
        on_comment(comment.slice)
      end
    else
      offset = location.start_offset
      lines = comment.slice.lines

      lines.each_with_index do |line, index|
        bounds(location.copy(start_offset: offset))

        if index == 0
          on_embdoc_beg(line)
        elsif index == lines.size - 1
          on_embdoc_end(line)
        else
          on_embdoc(line)
        end

        offset += line.bytesize
      end
    end
  end

  result.magic_comments.each do |magic_comment|
    on_magic_comment(magic_comment.key, magic_comment.value)
  end

  unless result.data_loc.nil?
    on___end__(result.data_loc.slice.each_line.first)
  end

  result.warnings.each do |warning|
    bounds(warning.location)

    if warning.level == :default
      warning(warning.message)
    else
      case warning.type
      when :ambiguous_first_argument_plus
        on_arg_ambiguous("+")
      when :ambiguous_first_argument_minus
        on_arg_ambiguous("-")
      when :ambiguous_slash
        on_arg_ambiguous("/")
      else
        warn(warning.message)
      end
    end
  end

  if error?
    result.errors.each do |error|
      location = error.location
      bounds(location)

      case error.type
      when :alias_argument
        on_alias_error("can't make alias for the number variables", location.slice)
      when :argument_formal_class
        on_param_error("formal argument cannot be a class variable", location.slice)
      when :argument_format_constant
        on_param_error("formal argument cannot be a constant", location.slice)
      when :argument_formal_global
        on_param_error("formal argument cannot be a global variable", location.slice)
      when :argument_formal_ivar
        on_param_error("formal argument cannot be an instance variable", location.slice)
      when :class_name, :module_name
        on_class_name_error("class/module name must be CONSTANT", location.slice)
      else
        on_parse_error(error.message)
      end
    end

    nil
  else
    result.value.accept(self)
  end
end

#result (private)

This method is for internal use only.

Lazily initialize the parse result.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3365

def result
  @result ||= Prism.parse(source, partial_script: true, version: "current")
end

#trailing_comma?(left, right) ⇒ Boolean (private)

This method is for internal use only.

Returns true if there is a comma between the two locations.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3374

def trailing_comma?(left, right)
  source.byteslice(left.end_offset...right.start_offset).include?(",")
end

#visit_alias_global_variable_node(node)

This method is for internal use only.

alias $foo $bar ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 616

def visit_alias_global_variable_node(node)
  new_name = visit_alias_global_variable_node_value(node.new_name)
  old_name = visit_alias_global_variable_node_value(node.old_name)

  bounds(node.location)
  on_var_alias(new_name, old_name)
end

#visit_alias_global_variable_node_value(node) (private)

This method is for internal use only.

Visit one side of an alias global variable node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 625

private def visit_alias_global_variable_node_value(node)
  bounds(node.location)

  case node
  when BackReferenceReadNode
    on_backref(node.slice)
  when GlobalVariableReadNode
    on_gvar(node.name.to_s)
  else
    raise
  end
end

#visit_alias_method_node(node)

This method is for internal use only.

alias foo bar ^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 606

def visit_alias_method_node(node)
  new_name = visit(node.new_name)
  old_name = visit(node.old_name)

  bounds(node.location)
  on_alias(new_name, old_name)
end

#visit_alternation_pattern_node(node)

This method is for internal use only.

foo => bar | baz

^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 640

def visit_alternation_pattern_node(node)
  left = visit_pattern_node(node.left)
  right = visit_pattern_node(node.right)

  bounds(node.location)
  on_binary(left, :|, right)
end

#visit_and_node(node)

This method is for internal use only.

a and b ^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 660

def visit_and_node(node)
  left = visit(node.left)
  right = visit(node.right)

  bounds(node.location)
  on_binary(left, node.operator.to_sym, right)
end

#visit_arguments(elements) (private)

This method is for internal use only.

Visit a list of elements, like the elements of an array or arguments.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 811

private def visit_arguments(elements)
  bounds(elements.first.location)
  elements.inject(on_args_new) do |args, element|
    arg = visit(element)
    bounds(element.location)

    case element
    when BlockArgumentNode
      on_args_add_block(args, arg)
    when SplatNode
      on_args_add_star(args, arg)
    else
      on_args_add(args, arg)
    end
  end
end

#visit_arguments_node(node)

This method is for internal use only.

foo(bar)

^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 851

def visit_arguments_node(node)
  arguments, _, _ = visit_call_node_arguments(node, nil, false)
  arguments
end

#visit_array_node(node)

This method is for internal use only.

^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 670

def visit_array_node(node)
  case (opening = node.opening)
  when /^%w/
    opening_loc = node.opening_loc
    bounds(opening_loc)
    on_qwords_beg(opening)

    elements = on_qwords_new
    previous = nil

    node.elements.each do |element|
      visit_words_sep(opening_loc, previous, element)

      bounds(element.location)
      elements = on_qwords_add(elements, on_tstring_content(element.content))

      previous = element
    end

    bounds(node.closing_loc)
    on_tstring_end(node.closing)
  when /^%i/
    opening_loc = node.opening_loc
    bounds(opening_loc)
    on_qsymbols_beg(opening)

    elements = on_qsymbols_new
    previous = nil

    node.elements.each do |element|
      visit_words_sep(opening_loc, previous, element)

      bounds(element.location)
      elements = on_qsymbols_add(elements, on_tstring_content(element.value))

      previous = element
    end

    bounds(node.closing_loc)
    on_tstring_end(node.closing)
  when /^%W/
    opening_loc = node.opening_loc
    bounds(opening_loc)
    on_words_beg(opening)

    elements = on_words_new
    previous = nil

    node.elements.each do |element|
      visit_words_sep(opening_loc, previous, element)

      bounds(element.location)
      elements =
        on_words_add(
          elements,
          if element.is_a?(StringNode)
            on_word_add(on_word_new, on_tstring_content(element.content))
          else
            element.parts.inject(on_word_new) do |word, part|
              word_part =
                if part.is_a?(StringNode)
                  bounds(part.location)
                  on_tstring_content(part.content)
                else
                  visit(part)
                end

              on_word_add(word, word_part)
            end
          end
        )

      previous = element
    end

    bounds(node.closing_loc)
    on_tstring_end(node.closing)
  when /^%I/
    opening_loc = node.opening_loc
    bounds(opening_loc)
    on_symbols_beg(opening)

    elements = on_symbols_new
    previous = nil

    node.elements.each do |element|
      visit_words_sep(opening_loc, previous, element)

      bounds(element.location)
      elements =
        on_symbols_add(
          elements,
          if element.is_a?(SymbolNode)
            on_word_add(on_word_new, on_tstring_content(element.value))
          else
            element.parts.inject(on_word_new) do |word, part|
              word_part =
                if part.is_a?(StringNode)
                  bounds(part.location)
                  on_tstring_content(part.content)
                else
                  visit(part)
                end

              on_word_add(word, word_part)
            end
          end
        )

      previous = element
    end

    bounds(node.closing_loc)
    on_tstring_end(node.closing)
  else
    bounds(node.opening_loc)
    on_lbracket(opening)

    elements = visit_arguments(node.elements) unless node.elements.empty?

    bounds(node.closing_loc)
    on_rbracket(node.closing)
  end

  bounds(node.location)
  on_array(elements)
end

#visit_array_pattern_node(node)

This method is for internal use only.

foo => [bar]

^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 830

def visit_array_pattern_node(node)
  constant = visit(node.constant)
  requireds = visit_all(node.requireds) if node.requireds.any?
  rest =
    if (rest_node = node.rest).is_a?(SplatNode)
      if rest_node.expression.nil?
        bounds(rest_node.location)
        on_var_field(nil)
      else
        visit(rest_node.expression)
      end
    end

  posts = visit_all(node.posts) if node.posts.any?

  bounds(node.location)
  on_aryptn(constant, requireds, rest, posts)
end

#visit_assoc_node(node)

This method is for internal use only.

{ a: 1 }

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 858

def visit_assoc_node(node)
  key = visit(node.key)
  value = visit(node.value)

  bounds(node.location)
  on_assoc_new(key, value)
end

#visit_assoc_splat_node(node)

This method is for internal use only.

def foo(**); bar(**); end

^^

{ **foo }

^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 871

def visit_assoc_splat_node(node)
  value = visit(node.value)

  bounds(node.location)
  on_assoc_splat(value)
end

#visit_back_reference_read_node(node)

This method is for internal use only.

$+ ^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 880

def visit_back_reference_read_node(node)
  bounds(node.location)
  on_backref(node.slice)
end

#visit_begin_node(node)

This method is for internal use only.

begin end ^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 887

def visit_begin_node(node)
  clauses = visit_begin_node_clauses(node.begin_keyword_loc, node, false)

  bounds(node.location)
  on_begin(clauses)
end

#visit_begin_node_clauses(location, node, allow_newline) (private)

This method is for internal use only.

Visit the clauses of a begin node to form an on_bodystmt call.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 895

private def visit_begin_node_clauses(location, node, allow_newline)
  statements =
    if node.statements.nil?
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      body = node.statements.body
      body.unshift(nil) if void_stmt?(location, node.statements.body[0].location, allow_newline)

      bounds(node.statements.location)
      visit_statements_node_body(body)
    end

  rescue_clause = visit(node.rescue_clause)
  else_clause =
    unless (else_clause_node = node.else_clause).nil?
      else_statements =
        if else_clause_node.statements.nil?
          [nil]
        else
          body = else_clause_node.statements.body
          body.unshift(nil) if void_stmt?(else_clause_node.else_keyword_loc, else_clause_node.statements.body[0].location, allow_newline)
          body
        end

      bounds(else_clause_node.location)
      visit_statements_node_body(else_statements)
    end
  ensure_clause = visit(node.ensure_clause)

  bounds(node.location)
  on_bodystmt(statements, rescue_clause, else_clause, ensure_clause)
end

#visit_block_argument_node(node)

This method is for internal use only.

foo(&bar)

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 951

def visit_block_argument_node(node)
  visit(node.expression)
end

#visit_block_local_variable_node(node)

This method is for internal use only.

foo { |; bar| }

^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 957

def visit_block_local_variable_node(node)
  bounds(node.location)
  on_ident(node.name.to_s)
end

#visit_block_node(node)

This method is for internal use only.

Visit a BlockNode.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 963

def visit_block_node(node)
  braces = node.opening == "{"
  parameters = visit(node.parameters)

  body =
    case node.body
    when nil
      bounds(node.location)
      stmts = on_stmts_add(on_stmts_new, on_void_stmt)

      bounds(node.location)
      braces ? stmts : on_bodystmt(stmts, nil, nil, nil)
    when StatementsNode
      stmts = node.body.body
      stmts.unshift(nil) if void_stmt?(node.parameters&.location || node.opening_loc, node.body.location, false)
      stmts = visit_statements_node_body(stmts)

      bounds(node.body.location)
      braces ? stmts : on_bodystmt(stmts, nil, nil, nil)
    when BeginNode
      visit_body_node(node.parameters&.location || node.opening_loc, node.body)
    else
      raise
    end

  if braces
    bounds(node.location)
    on_brace_block(parameters, body)
  else
    bounds(node.location)
    on_do_block(parameters, body)
  end
end

#visit_block_parameter_node(node)

This method is for internal use only.

def foo(&bar); end

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 999

def visit_block_parameter_node(node)
  if node.name_loc.nil?
    bounds(node.location)
    on_blockarg(nil)
  else
    bounds(node.name_loc)
    name = visit_token(node.name.to_s)

    bounds(node.location)
    on_blockarg(name)
  end
end

#visit_block_parameters_node(node)

This method is for internal use only.

A block’s parameters.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1013

def visit_block_parameters_node(node)
  parameters =
    if node.parameters.nil?
      on_params(nil, nil, nil, nil, nil, nil, nil)
    else
      visit(node.parameters)
    end

  locals =
    if node.locals.any?
      visit_all(node.locals)
    else
      false
    end

  bounds(node.location)
  on_block_var(parameters, locals)
end

#visit_body_node(location, node, allow_newline = false) (private)

This method is for internal use only.

Visit the body of a structure that can have either a set of statements or statements wrapped in rescue/else/ensure.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 930

private def visit_body_node(location, node, allow_newline = false)
  case node
  when nil
    bounds(location)
    on_bodystmt(visit_statements_node_body([nil]), nil, nil, nil)
  when StatementsNode
    body = [*node.body]
    body.unshift(nil) if void_stmt?(location, body[0].location, allow_newline)
    stmts = visit_statements_node_body(body)

    bounds(node.body.first.location)
    on_bodystmt(stmts, nil, nil, nil)
  when BeginNode
    visit_begin_node_clauses(location, node, allow_newline)
  else
    raise
  end
end

#visit_break_node(node)

This method is for internal use only.

break ^^^^^

break foo ^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1037

def visit_break_node(node)
  if node.arguments.nil?
    bounds(node.location)
    on_break(on_args_new)
  else
    arguments = visit(node.arguments)

    bounds(node.location)
    on_break(arguments)
  end
end

#visit_call_and_write_node(node)

This method is for internal use only.

foo.bar &&= baz ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1268

def visit_call_and_write_node(node)
  receiver = visit(node.receiver)

  bounds(node.call_operator_loc)
  call_operator = visit_token(node.call_operator)

  bounds(node.message_loc)
  message = visit_token(node.message)

  bounds(node.location)
  target = on_field(receiver, call_operator, message)

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_call_node(node)

This method is for internal use only.

foo ^^^

foo.bar ^^^^^^^

foo.bar() {} ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1057

def visit_call_node(node)
  if node.call_operator_loc.nil?
    case node.name
    when :[]
      receiver = visit(node.receiver)
      arguments, block, has_ripper_block = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc))

      bounds(node.location)
      call = on_aref(receiver, arguments)

      if has_ripper_block
        bounds(node.location)
        on_method_add_block(call, block)
      else
        call
      end
    when :[]=
      receiver = visit(node.receiver)

      *arguments, last_argument = node.arguments.arguments
      arguments << node.block if !node.block.nil?

      arguments =
        if arguments.any?
          args = visit_arguments(arguments)

          if !node.block.nil?
            args
          else
            bounds(arguments.first.location)
            on_args_add_block(args, false)
          end
        end

      bounds(node.location)
      call = on_aref_field(receiver, arguments)
      value = visit_write_value(last_argument)

      bounds(last_argument.location)
      on_assign(call, value)
    when :-@, :+@, :~
      receiver = visit(node.receiver)

      bounds(node.location)
      on_unary(node.name, receiver)
    when :!
      if node.message == "not"
        receiver =
          if !node.receiver.is_a?(ParenthesesNode) || !node.receiver.body.nil?
            visit(node.receiver)
          end

        bounds(node.location)
        on_unary(:not, receiver)
      else
        receiver = visit(node.receiver)

        bounds(node.location)
        on_unary(:!, receiver)
      end
    when *BINARY_OPERATORS
      receiver = visit(node.receiver)
      value = visit(node.arguments.arguments.first)

      bounds(node.location)
      on_binary(receiver, node.name, value)
    else
      bounds(node.message_loc)
      message = visit_token(node.message, false)

      if node.variable_call?
        on_vcall(message)
      else
        arguments, block, has_ripper_block = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc || node.location))
        call =
          if node.opening_loc.nil? && get_arguments_and_block(node.arguments, node.block).first.any?
            bounds(node.location)
            on_command(message, arguments)
          elsif !node.opening_loc.nil?
            bounds(node.location)
            on_method_add_arg(on_fcall(message), on_arg_paren(arguments))
          else
            bounds(node.location)
            on_method_add_arg(on_fcall(message), on_args_new)
          end

        if has_ripper_block
          bounds(node.block.location)
          on_method_add_block(call, block)
        else
          call
        end
      end
    end
  else
    receiver = visit(node.receiver)

    bounds(node.call_operator_loc)
    call_operator = visit_token(node.call_operator)

    message =
      if node.message_loc.nil?
        :call
      else
        bounds(node.message_loc)
        visit_token(node.message, false)
      end

    if node.name.end_with?("=") && !node.message.end_with?("=") && !node.arguments.nil? && node.block.nil?
      value = visit_write_value(node.arguments.arguments.first)

      bounds(node.location)
      on_assign(on_field(receiver, call_operator, message), value)
    else
      arguments, block, has_ripper_block = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc || node.location))
      call =
        if node.opening_loc.nil?
          bounds(node.location)

          if node.arguments.nil? && !node.block.is_a?(BlockArgumentNode)
            on_call(receiver, call_operator, message)
          else
            on_command_call(receiver, call_operator, message, arguments)
          end
        else
          bounds(node.opening_loc)
          arguments = on_arg_paren(arguments)

          bounds(node.location)
          on_method_add_arg(on_call(receiver, call_operator, message), arguments)
        end

      if has_ripper_block
        bounds(node.block.location)
        on_method_add_block(call, block)
      else
        call
      end
    end
  end
end

#visit_call_node_arguments(arguments_node, block_node, trailing_comma) (private)

This method is for internal use only.

Visit the arguments and block of a call node and return the arguments and block as they should be used.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1215

private def visit_call_node_arguments(arguments_node, block_node, trailing_comma)
  arguments, block = get_arguments_and_block(arguments_node, block_node)

  [
    if arguments.length == 1 && arguments.first.is_a?(ForwardingArgumentsNode)
      visit(arguments.first)
    elsif arguments.any?
      args = visit_arguments(arguments)

      if block_node.is_a?(BlockArgumentNode) || arguments.last.is_a?(ForwardingArgumentsNode) || command?(arguments.last) || trailing_comma
        args
      else
        bounds(arguments.first.location)
        on_args_add_block(args, false)
      end
    end,
    visit(block),
    block != nil,
  ]
end

#visit_call_operator_write_node(node)

This method is for internal use only.

foo.bar += baz ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1246

def visit_call_operator_write_node(node)
  receiver = visit(node.receiver)

  bounds(node.call_operator_loc)
  call_operator = visit_token(node.call_operator)

  bounds(node.message_loc)
  message = visit_token(node.message)

  bounds(node.location)
  target = on_field(receiver, call_operator, message)

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_call_or_write_node(node)

This method is for internal use only.

foo.bar ||= baz ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1290

def visit_call_or_write_node(node)
  receiver = visit(node.receiver)

  bounds(node.call_operator_loc)
  call_operator = visit_token(node.call_operator)

  bounds(node.message_loc)
  message = visit_token(node.message)

  bounds(node.location)
  target = on_field(receiver, call_operator, message)

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_call_target_node(node)

This method is for internal use only.

foo.bar, = 1 ^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1312

def visit_call_target_node(node)
  if node.call_operator == "::"
    receiver = visit(node.receiver)

    bounds(node.message_loc)
    message = visit_token(node.message)

    bounds(node.location)
    on_const_path_field(receiver, message)
  else
    receiver = visit(node.receiver)

    bounds(node.call_operator_loc)
    call_operator = visit_token(node.call_operator)

    bounds(node.message_loc)
    message = visit_token(node.message)

    bounds(node.location)
    on_field(receiver, call_operator, message)
  end
end

#visit_capture_pattern_node(node)

This method is for internal use only.

foo => bar => baz

^^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1337

def visit_capture_pattern_node(node)
  value = visit(node.value)
  target = visit(node.target)

  bounds(node.location)
  on_binary(value, :"=>", target)
end

#visit_case_match_node(node)

This method is for internal use only.

case foo; in bar; end ^^^^^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1360

def visit_case_match_node(node)
  predicate = visit(node.predicate)
  clauses =
    node.conditions.reverse_each.inject(visit(node.else_clause)) do |current, condition|
      on_in(*visit(condition), current)
    end

  bounds(node.location)
  on_case(predicate, clauses)
end

#visit_case_node(node)

This method is for internal use only.

case foo; when bar; end ^^^^^^^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1347

def visit_case_node(node)
  predicate = visit(node.predicate)
  clauses =
    node.conditions.reverse_each.inject(visit(node.else_clause)) do |current, condition|
      on_when(*visit(condition), current)
    end

  bounds(node.location)
  on_case(predicate, clauses)
end

#visit_class_node(node)

This method is for internal use only.

class Foo; end ^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1373

def visit_class_node(node)
  constant_path =
    if node.constant_path.is_a?(ConstantReadNode)
      bounds(node.constant_path.location)
      on_const_ref(on_const(node.constant_path.name.to_s))
    else
      visit(node.constant_path)
    end

  superclass = visit(node.superclass)
  bodystmt = visit_body_node(node.superclass&.location || node.constant_path.location, node.body, node.superclass.nil?)

  bounds(node.location)
  on_class(constant_path, superclass, bodystmt)
end

#visit_class_variable_and_write_node(node)

This method is for internal use only.

@@foo &&= bar ^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1426

def visit_class_variable_and_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_cvar(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_class_variable_operator_write_node(node)

This method is for internal use only.

@@foo += bar ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1412

def visit_class_variable_operator_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_cvar(node.name.to_s))

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_class_variable_or_write_node(node)

This method is for internal use only.

@@foo ||= bar ^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1440

def visit_class_variable_or_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_cvar(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_class_variable_read_node(node)

This method is for internal use only.

@@foo ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1391

def visit_class_variable_read_node(node)
  bounds(node.location)
  on_var_ref(on_cvar(node.slice))
end

#visit_class_variable_target_node(node)

This method is for internal use only.

@@foo, = bar ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1454

def visit_class_variable_target_node(node)
  bounds(node.location)
  on_var_field(on_cvar(node.name.to_s))
end

#visit_class_variable_write_node(node)

This method is for internal use only.

@@foo = 1 ^^^^^^^^^

@@foo, @@bar = 1 ^^^^^ ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1401

def visit_class_variable_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_cvar(node.name.to_s))
  value = visit_write_value(node.value)

  bounds(node.location)
  on_assign(target, value)
end

#visit_constant_and_write_node(node)

This method is for internal use only.

Foo &&= bar ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1496

def visit_constant_and_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_const(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_constant_operator_write_node(node)

This method is for internal use only.

Foo += bar ^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1482

def visit_constant_operator_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_const(node.name.to_s))

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_constant_or_write_node(node)

This method is for internal use only.

Foo ||= bar ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1510

def visit_constant_or_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_const(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_constant_path_and_write_node(node)

This method is for internal use only.

Foo::Bar &&= baz ^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1596

def visit_constant_path_and_write_node(node)
  target = visit_constant_path_write_node_target(node.target)

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_constant_path_node(node)

This method is for internal use only.

Foo::Bar ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1531

def visit_constant_path_node(node)
  if node.parent.nil?
    bounds(node.name_loc)
    child = on_const(node.name.to_s)

    bounds(node.location)
    on_top_const_ref(child)
  else
    parent = visit(node.parent)

    bounds(node.name_loc)
    child = on_const(node.name.to_s)

    bounds(node.location)
    on_const_path_ref(parent, child)
  end
end

#visit_constant_path_operator_write_node(node)

This method is for internal use only.

Foo::Bar += baz ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1583

def visit_constant_path_operator_write_node(node)
  target = visit_constant_path_write_node_target(node.target)

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_constant_path_or_write_node(node)

This method is for internal use only.

Foo::Bar ||= baz ^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1609

def visit_constant_path_or_write_node(node)
  target = visit_constant_path_write_node_target(node.target)

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_constant_path_target_node(node)

This method is for internal use only.

Foo::Bar, = baz ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1622

def visit_constant_path_target_node(node)
  visit_constant_path_write_node_target(node)
end

#visit_constant_path_write_node(node)

This method is for internal use only.

Foo::Bar = 1 ^^^^^^^^^^^^

Foo::Foo, Bar::Bar = 1 ^^^^^^^^ ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1554

def visit_constant_path_write_node(node)
  target = visit_constant_path_write_node_target(node.target)
  value = visit_write_value(node.value)

  bounds(node.location)
  on_assign(target, value)
end

#visit_constant_path_write_node_target(node) (private)

This method is for internal use only.

Visit a constant path that is part of a write node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1563

private def visit_constant_path_write_node_target(node)
  if node.parent.nil?
    bounds(node.name_loc)
    child = on_const(node.name.to_s)

    bounds(node.location)
    on_top_const_field(child)
  else
    parent = visit(node.parent)

    bounds(node.name_loc)
    child = on_const(node.name.to_s)

    bounds(node.location)
    on_const_path_field(parent, child)
  end
end

#visit_constant_read_node(node)

This method is for internal use only.

Foo ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1461

def visit_constant_read_node(node)
  bounds(node.location)
  on_var_ref(on_const(node.name.to_s))
end

#visit_constant_target_node(node)

This method is for internal use only.

Foo, = bar ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1524

def visit_constant_target_node(node)
  bounds(node.location)
  on_var_field(on_const(node.name.to_s))
end

#visit_constant_write_node(node)

This method is for internal use only.

Foo = 1 ^^^^^^^

Foo, Bar = 1 ^^^ ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1471

def visit_constant_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_const(node.name.to_s))
  value = visit_write_value(node.value)

  bounds(node.location)
  on_assign(target, value)
end

#visit_def_node(node)

This method is for internal use only.

def foo; end ^^^^^^^^^^^^

def self.foo; end ^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1631

def visit_def_node(node)
  receiver = visit(node.receiver)
  operator =
    if !node.operator_loc.nil?
      bounds(node.operator_loc)
      visit_token(node.operator)
    end

  bounds(node.name_loc)
  name = visit_token(node.name_loc.slice)

  parameters =
    if node.parameters.nil?
      bounds(node.location)
      on_params(nil, nil, nil, nil, nil, nil, nil)
    else
      visit(node.parameters)
    end

  if !node.lparen_loc.nil?
    bounds(node.lparen_loc)
    parameters = on_paren(parameters)
  end

  bodystmt =
    if node.equal_loc.nil?
      visit_body_node(node.rparen_loc || node.end_keyword_loc, node.body)
    else
      body = visit(node.body.body.first)

      bounds(node.body.location)
      on_bodystmt(body, nil, nil, nil)
    end

  bounds(node.location)
  if receiver
    on_defs(receiver, operator, name, parameters, bodystmt)
  else
    on_def(name, parameters, bodystmt)
  end
end

#visit_defined_node(node)

This method is for internal use only.

defined? a ^^^^^^^^^^

defined?(a) ^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1678

def visit_defined_node(node)
  expression = visit(node.value)

  # Very weird circumstances here where something like:
  #
  #     defined?
  #     (1)
  #
  # gets parsed in Ruby as having only the `1` expression but in Ripper it
  # gets parsed as having a parentheses node. In this case we need to
  # synthesize that node to match Ripper's behavior.
  if node.lparen_loc && node.keyword_loc.join(node.lparen_loc).slice.include?("\n")
    bounds(node.lparen_loc.join(node.rparen_loc))
    expression = on_paren(on_stmts_add(on_stmts_new, expression))
  end

  bounds(node.location)
  on_defined(expression)
end

#visit_destructured_parameter_node(node) (private)

This method is for internal use only.

Visit a destructured positional parameter node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2704

private def visit_destructured_parameter_node(node)
  bounds(node.location)
  targets = visit_multi_target_node_targets(node.lefts, node.rest, node.rights, false)

  bounds(node.lparen_loc)
  on_mlhs_paren(targets)
end

#visit_else_node(node)

This method is for internal use only.

if foo then bar else baz end

^^^^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1700

def visit_else_node(node)
  statements =
    if node.statements.nil?
      [nil]
    else
      body = node.statements.body
      body.unshift(nil) if void_stmt?(node.else_keyword_loc, node.statements.body[0].location, false)
      body
    end

  bounds(node.location)
  on_else(visit_statements_node_body(statements))
end

#visit_embedded_statements_node(node)

This method is for internal use only.

“foo #bar

^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1716

def visit_embedded_statements_node(node)
  bounds(node.opening_loc)
  on_embexpr_beg(node.opening)

  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  bounds(node.closing_loc)
  on_embexpr_end(node.closing)

  bounds(node.location)
  on_string_embexpr(statements)
end

#visit_embedded_variable_node(node)

This method is for internal use only.

“foo #@bar”

^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1737

def visit_embedded_variable_node(node)
  bounds(node.operator_loc)
  on_embvar(node.operator)

  variable = visit(node.variable)

  bounds(node.location)
  on_string_dvar(variable)
end

#visit_ensure_node(node)

This method is for internal use only.

Visit an EnsureNode node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1748

def visit_ensure_node(node)
  statements =
    if node.statements.nil?
      [nil]
    else
      body = node.statements.body
      body.unshift(nil) if void_stmt?(node.ensure_keyword_loc, body[0].location, false)
      body
    end

  statements = visit_statements_node_body(statements)

  bounds(node.location)
  on_ensure(statements)
end

#visit_error_recovery_node(node)

This method is for internal use only.

A node that is missing from the syntax tree. This is only used in the case of a syntax error.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2514

def visit_error_recovery_node(node)
  raise "Cannot visit error recovery nodes directly."
end

#visit_false_node(node)

This method is for internal use only.

false ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1766

def visit_false_node(node)
  bounds(node.location)
  on_var_ref(on_kw("false"))
end

#visit_find_pattern_node(node)

This method is for internal use only.

foo => [*, bar, *]

^^^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1773

def visit_find_pattern_node(node)
  constant = visit(node.constant)
  left =
    if node.left.expression.nil?
      bounds(node.left.location)
      on_var_field(nil)
    else
      visit(node.left.expression)
    end

  requireds = visit_all(node.requireds) if node.requireds.any?
  right =
    if node.right.expression.nil?
      bounds(node.right.location)
      on_var_field(nil)
    else
      visit(node.right.expression)
    end

  bounds(node.location)
  on_fndptn(constant, left, requireds, right)
end

#visit_flip_flop_node(node)

This method is for internal use only.

if foo .. bar; end

^^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1798

def visit_flip_flop_node(node)
  left = visit(node.left)
  right = visit(node.right)

  bounds(node.location)
  if node.exclude_end?
    on_dot3(left, right)
  else
    on_dot2(left, right)
  end
end

#visit_float_node(node)

This method is for internal use only.

1.0 ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1812

def visit_float_node(node)
  visit_number_node(node) { |text| on_float(text) }
end

#visit_for_node(node)

This method is for internal use only.

for foo in bar do end ^^^^^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1818

def visit_for_node(node)
  index = visit(node.index)
  collection = visit(node.collection)
  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  bounds(node.location)
  on_for(index, collection, statements)
end

#visit_forwarding_arguments_node(node)

This method is for internal use only.

def foo(…); bar(…); end

^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1835

def visit_forwarding_arguments_node(node)
  bounds(node.location)
  on_args_forward
end

#visit_forwarding_parameter_node(node)

This method is for internal use only.

def foo(…); end

^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1842

def visit_forwarding_parameter_node(node)
  bounds(node.location)
  on_args_forward
end

#visit_forwarding_super_node(node)

This method is for internal use only.

super ^^^^^

super {} ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1852

def visit_forwarding_super_node(node)
  if node.block.nil?
    bounds(node.location)
    on_zsuper
  else
    block = visit(node.block)

    bounds(node.location)
    on_method_add_block(on_zsuper, block)
  end
end

#visit_global_variable_and_write_node(node)

This method is for internal use only.

$foo &&= bar ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1901

def visit_global_variable_and_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_gvar(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_global_variable_operator_write_node(node)

This method is for internal use only.

$foo += bar ^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1887

def visit_global_variable_operator_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_gvar(node.name.to_s))

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_global_variable_or_write_node(node)

This method is for internal use only.

$foo ||= bar ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1915

def visit_global_variable_or_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_gvar(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_global_variable_read_node(node)

This method is for internal use only.

$foo ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1866

def visit_global_variable_read_node(node)
  bounds(node.location)
  on_var_ref(on_gvar(node.name.to_s))
end

#visit_global_variable_target_node(node)

This method is for internal use only.

$foo, = bar ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1929

def visit_global_variable_target_node(node)
  bounds(node.location)
  on_var_field(on_gvar(node.name.to_s))
end

#visit_global_variable_write_node(node)

This method is for internal use only.

$foo = 1 ^^^^^^^^

$foo, $bar = 1 ^^^^ ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1876

def visit_global_variable_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_gvar(node.name.to_s))
  value = visit_write_value(node.value)

  bounds(node.location)
  on_assign(target, value)
end

#visit_hash_node(node)

This method is for internal use only.

{} ^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1936

def visit_hash_node(node)
  elements =
    if node.elements.any?
      args = visit_all(node.elements)

      bounds(node.elements.first.location)
      on_assoclist_from_args(args)
    end

  bounds(node.location)
  on_hash(elements)
end

#visit_hash_pattern_node(node)

This method is for internal use only.

foo => {}

^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1951

def visit_hash_pattern_node(node)
  constant = visit(node.constant)
  elements =
    if node.elements.any? || !node.rest.nil?
      node.elements.map do |element|
        [
          if (key = element.key).opening_loc.nil?
            visit(key)
          else
            bounds(key.value_loc)
            if (value = key.value).empty?
              on_string_content
            else
              on_string_add(on_string_content, on_tstring_content(value))
            end
          end,
          visit(element.value)
        ]
      end
    end

  rest =
    case node.rest
    when AssocSplatNode
      visit(node.rest.value)
    when NoKeywordsParameterNode
      bounds(node.rest.location)
      on_var_field(visit(node.rest))
    end

  bounds(node.location)
  on_hshptn(constant, elements, rest)
end

#visit_heredoc_node(parts, base) (private)

This method is for internal use only.

Visit a string that is expressed using a <<~ heredoc.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3075

private def visit_heredoc_node(parts, base)
  common_whitespace = visit_heredoc_node_whitespace(parts)

  if common_whitespace == 0
    bounds(parts.first.location)

    string = []
    result = base

    parts.each do |part|
      if part.is_a?(StringNode)
        if string.empty?
          string = [part]
        else
          string << part
        end
      else
        unless string.empty?
          bounds(string[0].location)
          result = yield result, on_tstring_content(string.map(&:content).join)
          string = []
        end

        result = yield result, visit(part)
      end
    end

    unless string.empty?
      bounds(string[0].location)
      result = yield result, on_tstring_content(string.map(&:content).join)
    end

    result
  else
    bounds(parts.first.location)
    result =
      parts.inject(base) do |string_content, part|
        yield string_content, visit_string_content(part)
      end

    bounds(parts.first.location)
    on_heredoc_dedent(result, common_whitespace)
  end
end

#visit_heredoc_node_whitespace(parts) (private)

This method is for internal use only.

Ripper gives back the escaped string content but strips out the common leading whitespace. ::Prism gives back the unescaped string content and a location for the escaped string content. Unfortunately these don’t work well together, so here we need to re-derive the common leading whitespace.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3050

private def visit_heredoc_node_whitespace(parts)
  common_whitespace = nil
  dedent_next = true

  parts.each do |part|
    if part.is_a?(StringNode)
      if dedent_next && !(content = part.content).chomp.empty?
        common_whitespace = [
          common_whitespace || Float::INFINITY,
          content[/\A\s*/].each_char.inject(0) do |part_whitespace, char|
            char == "\t" ? ((part_whitespace / 8 + 1) * 8) : (part_whitespace + 1)
          end
        ].min
      end

      dedent_next = true
    else
      dedent_next = false
    end
  end

  common_whitespace || 0
end

#visit_heredoc_string_node(node) (private)

This method is for internal use only.

Visit a heredoc node that is representing a string.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3121

private def visit_heredoc_string_node(node)
  bounds(node.opening_loc)
  on_heredoc_beg(node.opening)

  bounds(node.location)
  result =
    visit_heredoc_node(node.parts, on_string_content) do |parts, part|
      on_string_add(parts, part)
    end

  bounds(node.closing_loc)
  on_heredoc_end(node.closing)

  result
end

#visit_heredoc_x_string_node(node) (private)

This method is for internal use only.

Visit a heredoc node that is representing an xstring.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3138

private def visit_heredoc_x_string_node(node)
  bounds(node.opening_loc)
  on_heredoc_beg(node.opening)

  bounds(node.location)
  result =
    visit_heredoc_node(node.parts, on_xstring_new) do |parts, part|
      on_xstring_add(parts, part)
    end

  bounds(node.closing_loc)
  on_heredoc_end(node.closing)

  result
end

#visit_if_node(node)

This method is for internal use only.

if foo then bar end ^^^^^^^^^^^^^^^^^^^

bar if foo ^^^^^^^^^^

foo ? bar : baz ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 1993

def visit_if_node(node)
  if node.then_keyword == "?"
    predicate = visit(node.predicate)
    truthy = visit(node.statements.body.first)
    falsy = visit(node.subsequent.statements.body.first)

    bounds(node.location)
    on_ifop(predicate, truthy, falsy)
  elsif node.statements.nil? || (node.predicate.location.start_offset < node.statements.location.start_offset)
    predicate = visit(node.predicate)
    statements =
      if node.statements.nil?
        bounds(node.location)
        on_stmts_add(on_stmts_new, on_void_stmt)
      else
        visit(node.statements)
      end
    subsequent = visit(node.subsequent)

    bounds(node.location)
    if node.if_keyword == "if"
      on_if(predicate, statements, subsequent)
    else
      on_elsif(predicate, statements, subsequent)
    end
  else
    statements = visit(node.statements.body.first)
    predicate = visit(node.predicate)

    bounds(node.location)
    on_if_mod(predicate, statements)
  end
end

#visit_imaginary_node(node)

This method is for internal use only.

1i ^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2029

def visit_imaginary_node(node)
  visit_number_node(node) { |text| on_imaginary(text) }
end

#visit_implicit_node(node)

This method is for internal use only.

{ foo: }

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2035

def visit_implicit_node(node)
end

#visit_implicit_rest_node(node)

This method is for internal use only.

foo { |bar,| }

^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2040

def visit_implicit_rest_node(node)
  bounds(node.location)
  on_excessed_comma
end

#visit_in_node(node)

This method is for internal use only.

case foo; in bar; end ^^^^^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2047

def visit_in_node(node)
  # This is a special case where we're not going to call on_in directly
  # because we don't have access to the subsequent. Instead, we'll return
  # the component parts and let the parent node handle it.
  pattern = visit_pattern_node(node.pattern)
  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  [pattern, statements]
end

#visit_index_and_write_node(node)

This method is for internal use only.

foo &&= baz ^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2082

def visit_index_and_write_node(node)
  receiver = visit(node.receiver)
  arguments, _, _ = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc))

  bounds(node.location)
  target = on_aref_field(receiver, arguments)

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_index_operator_write_node(node)

This method is for internal use only.

foo += baz ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2065

def visit_index_operator_write_node(node)
  receiver = visit(node.receiver)
  arguments, _, _ = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc))

  bounds(node.location)
  target = on_aref_field(receiver, arguments)

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_index_or_write_node(node)

This method is for internal use only.

foo ||= baz ^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2099

def visit_index_or_write_node(node)
  receiver = visit(node.receiver)
  arguments, _, _ = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc))

  bounds(node.location)
  target = on_aref_field(receiver, arguments)

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_index_target_node(node)

This method is for internal use only.

foo, = 1 ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2116

def visit_index_target_node(node)
  receiver = visit(node.receiver)
  arguments, _, _ = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.closing_loc))

  bounds(node.location)
  on_aref_field(receiver, arguments)
end

#visit_instance_variable_and_write_node(node)

This method is for internal use only.

^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2158

def visit_instance_variable_and_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ivar(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_instance_variable_operator_write_node(node)

This method is for internal use only.

^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2144

def visit_instance_variable_operator_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ivar(node.name.to_s))

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_instance_variable_or_write_node(node)

This method is for internal use only.

^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2172

def visit_instance_variable_or_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ivar(node.name.to_s))

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_instance_variable_read_node(node)

This method is for internal use only.

^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2126

def visit_instance_variable_read_node(node)
  bounds(node.location)
  on_var_ref(on_ivar(node.name.to_s))
end

#visit_instance_variable_target_node(node)

This method is for internal use only.

@foo, = bar ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2186

def visit_instance_variable_target_node(node)
  bounds(node.location)
  on_var_field(on_ivar(node.name.to_s))
end

#visit_instance_variable_write_node(node)

This method is for internal use only.

^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2133

def visit_instance_variable_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ivar(node.name.to_s))
  value = visit_write_value(node.value)

  bounds(node.location)
  on_assign(target, value)
end

#visit_integer_node(node)

This method is for internal use only.

1 ^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2193

def visit_integer_node(node)
  visit_number_node(node) { |text| on_int(text) }
end

#visit_interpolated_match_last_line_node(node)

This method is for internal use only.

if /foo #bar/ then end

^^^^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2199

def visit_interpolated_match_last_line_node(node)
  bounds(node.opening_loc)
  on_regexp_beg(node.opening)

  bounds(node.parts.first.location)
  parts =
    node.parts.inject(on_regexp_new) do |content, part|
      on_regexp_add(content, visit_string_content(part))
    end

  bounds(node.closing_loc)
  closing = on_regexp_end(node.closing)

  bounds(node.location)
  on_regexp_literal(parts, closing)
end

#visit_interpolated_regular_expression_node(node)

This method is for internal use only.

/foo #bar/ ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2218

def visit_interpolated_regular_expression_node(node)
  bounds(node.opening_loc)
  on_regexp_beg(node.opening)

  bounds(node.parts.first.location)
  parts =
    node.parts.inject(on_regexp_new) do |content, part|
      on_regexp_add(content, visit_string_content(part))
    end

  bounds(node.closing_loc)
  closing = on_regexp_end(node.closing)

  bounds(node.location)
  on_regexp_literal(parts, closing)
end

#visit_interpolated_string_node(node)

This method is for internal use only.

“foo #bar” ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2237

def visit_interpolated_string_node(node)
  if node.opening&.start_with?("<<~")
    heredoc = visit_heredoc_string_node(node)

    bounds(node.location)
    on_string_literal(heredoc)
  elsif !node.heredoc? && node.parts.length > 1 && node.parts.any? { |part| (part.is_a?(StringNode) || part.is_a?(InterpolatedStringNode)) && !part.opening_loc.nil? }
    first, *rest = node.parts
    rest.inject(visit(first)) do |content, part|
      concat = visit(part)

      bounds(part.location)
      on_string_concat(content, concat)
    end
  else
    bounds(node.parts.first.location)
    parts =
      node.parts.inject(on_string_content) do |content, part|
        on_string_add(content, visit_string_content(part))
      end

    bounds(node.location)
    on_string_literal(parts)
  end
end

#visit_interpolated_symbol_node(node)

This method is for internal use only.

:“foo #bar” ^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2265

def visit_interpolated_symbol_node(node)
  bounds(node.parts.first.location)
  parts =
    node.parts.inject(on_string_content) do |content, part|
      on_string_add(content, visit_string_content(part))
    end

  bounds(node.location)
  on_dyna_symbol(parts)
end

#visit_interpolated_x_string_node(node)

This method is for internal use only.

foo #{bar} ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2278

def visit_interpolated_x_string_node(node)
  if node.opening.start_with?("<<~")
    heredoc = visit_heredoc_x_string_node(node)

    bounds(node.location)
    on_xstring_literal(heredoc)
  else
    bounds(node.parts.first.location)
    parts =
      node.parts.inject(on_xstring_new) do |content, part|
        on_xstring_add(content, visit_string_content(part))
      end

    bounds(node.location)
    on_xstring_literal(parts)
  end
end

#visit_it_local_variable_read_node(node)

This method is for internal use only.

-> { it }

^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2308

def visit_it_local_variable_read_node(node)
  bounds(node.location)
  on_vcall(on_ident(node.slice))
end

#visit_it_parameters_node(node)

This method is for internal use only.

-> { it } ^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2315

def visit_it_parameters_node(node)
end

#visit_keyword_hash_node(node)

This method is for internal use only.

foo(bar: baz)

^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2320

def visit_keyword_hash_node(node)
  elements = visit_all(node.elements)

  bounds(node.location)
  on_bare_assoc_hash(elements)
end

#visit_keyword_rest_parameter_node(node)

This method is for internal use only.

def foo(**bar); end

^^^^^

def foo(**); end

^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2332

def visit_keyword_rest_parameter_node(node)
  if node.name_loc.nil?
    bounds(node.location)
    on_kwrest_param(nil)
  else
    bounds(node.name_loc)
    name = on_ident(node.name.to_s)

    bounds(node.location)
    on_kwrest_param(name)
  end
end

#visit_lambda_node(node)

This method is for internal use only.

-> {}

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2346

def visit_lambda_node(node)
  bounds(node.operator_loc)
  on_tlambda(node.operator)

  parameters =
    if node.parameters.is_a?(BlockParametersNode)
      # Ripper does not track block-locals within lambdas, so we skip
      # directly to the parameters here.
      params =
        if node.parameters.parameters.nil?
          bounds(node.location)
          on_params(nil, nil, nil, nil, nil, nil, nil)
        else
          visit(node.parameters.parameters)
        end

      visit_all(node.parameters.locals)

      if node.parameters.opening_loc.nil?
        params
      else
        bounds(node.parameters.opening_loc)
        on_paren(params)
      end
    else
      bounds(node.location)
      on_params(nil, nil, nil, nil, nil, nil, nil)
    end

  braces = node.opening == "{"
  if braces
    bounds(node.opening_loc)
    on_tlambeg(node.opening)
  end

  body =
    case node.body
    when nil
      bounds(node.location)
      stmts = on_stmts_add(on_stmts_new, on_void_stmt)

      bounds(node.location)
      braces ? stmts : on_bodystmt(stmts, nil, nil, nil)
    when StatementsNode
      stmts = node.body.body
      stmts.unshift(nil) if void_stmt?(node.parameters&.location || node.opening_loc, node.body.location, false)
      stmts = visit_statements_node_body(stmts)

      bounds(node.body.location)
      braces ? stmts : on_bodystmt(stmts, nil, nil, nil)
    when BeginNode
      visit_body_node(node.opening_loc, node.body)
    else
      raise
    end

  bounds(node.location)
  on_lambda(parameters, body)
end

#visit_local_variable_and_write_node(node)

This method is for internal use only.

foo &&= bar ^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2440

def visit_local_variable_and_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ident(node.name_loc.slice))

  bounds(node.operator_loc)
  operator = on_op("&&=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_local_variable_operator_write_node(node)

This method is for internal use only.

foo += bar ^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2426

def visit_local_variable_operator_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ident(node.name_loc.slice))

  bounds(node.binary_operator_loc)
  operator = on_op("#{node.binary_operator}=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_local_variable_or_write_node(node)

This method is for internal use only.

foo ||= bar ^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2454

def visit_local_variable_or_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ident(node.name_loc.slice))

  bounds(node.operator_loc)
  operator = on_op("||=")
  value = visit_write_value(node.value)

  bounds(node.location)
  on_opassign(target, operator, value)
end

#visit_local_variable_read_node(node)

This method is for internal use only.

foo ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2408

def visit_local_variable_read_node(node)
  bounds(node.location)
  on_var_ref(on_ident(node.slice))
end

#visit_local_variable_target_node(node)

This method is for internal use only.

foo, = bar ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2468

def visit_local_variable_target_node(node)
  bounds(node.location)
  on_var_field(on_ident(node.name.to_s))
end

#visit_local_variable_write_node(node)

This method is for internal use only.

foo = 1 ^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2415

def visit_local_variable_write_node(node)
  bounds(node.name_loc)
  target = on_var_field(on_ident(node.name_loc.slice))
  value = visit_write_value(node.value)

  bounds(node.location)
  on_assign(target, value)
end

#visit_match_last_line_node(node)

This method is for internal use only.

if /foo/ then end

^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2475

def visit_match_last_line_node(node)
  bounds(node.opening_loc)
  on_regexp_beg(node.opening)

  bounds(node.content_loc)
  tstring_content = on_tstring_content(node.content)

  bounds(node.closing_loc)
  closing = on_regexp_end(node.closing)

  on_regexp_literal(on_regexp_add(on_regexp_new, tstring_content), closing)
end

#visit_match_predicate_node(node)

This method is for internal use only.

foo in bar ^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2490

def visit_match_predicate_node(node)
  value = visit(node.value)
  pattern = on_in(visit_pattern_node(node.pattern), nil, nil)

  on_case(value, pattern)
end

#visit_match_required_node(node)

This method is for internal use only.

foo => bar ^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2499

def visit_match_required_node(node)
  value = visit(node.value)
  pattern = on_in(visit_pattern_node(node.pattern), nil, nil)

  on_case(value, pattern)
end

#visit_match_write_node(node)

This method is for internal use only.

/(?<foo>foo)/ =~ bar ^^^^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2508

def visit_match_write_node(node)
  visit(node.call)
end

#visit_module_node(node)

This method is for internal use only.

module Foo; end ^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2520

def visit_module_node(node)
  constant_path =
    if node.constant_path.is_a?(ConstantReadNode)
      bounds(node.constant_path.location)
      on_const_ref(on_const(node.constant_path.name.to_s))
    else
      visit(node.constant_path)
    end

  bodystmt = visit_body_node(node.constant_path.location, node.body, true)

  bounds(node.location)
  on_module(constant_path, bodystmt)
end

#visit_multi_target_node(node)

This method is for internal use only.

(foo, bar), bar = qux ^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2537

def visit_multi_target_node(node)
  bounds(node.location)
  targets = visit_multi_target_node_targets(node.lefts, node.rest, node.rights, true)

  if node.lparen_loc.nil?
    targets
  else
    bounds(node.lparen_loc)
    on_mlhs_paren(targets)
  end
end

#visit_multi_target_node_targets(lefts, rest, rights, skippable) (private)

This method is for internal use only.

Visit the targets of a multi-target node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2550

private def visit_multi_target_node_targets(lefts, rest, rights, skippable)
  if skippable && lefts.length == 1 && lefts.first.is_a?(MultiTargetNode) && rest.nil? && rights.empty?
    return visit(lefts.first)
  end

  mlhs = on_mlhs_new

  lefts.each do |left|
    bounds(left.location)
    mlhs = on_mlhs_add(mlhs, visit(left))
  end

  case rest
  when nil
    # do nothing
  when ImplicitRestNode
    # these do not get put into the generated tree
    bounds(rest.location)
    on_excessed_comma
  else
    bounds(rest.location)
    mlhs = on_mlhs_add_star(mlhs, visit(rest))
  end

  if rights.any?
    bounds(rights.first.location)
    post = on_mlhs_new

    rights.each do |right|
      bounds(right.location)
      post = on_mlhs_add(post, visit(right))
    end

    mlhs = on_mlhs_add_post(mlhs, post)
  end

  mlhs
end

#visit_multi_write_node(node)

This method is for internal use only.

foo, bar = baz ^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2591

def visit_multi_write_node(node)
  bounds(node.location)
  targets = visit_multi_target_node_targets(node.lefts, node.rest, node.rights, true)

  unless node.lparen_loc.nil?
    bounds(node.lparen_loc)
    targets = on_mlhs_paren(targets)
  end

  value = visit_write_value(node.value)

  bounds(node.location)
  on_massign(targets, value)
end

#visit_next_node(node)

This method is for internal use only.

next ^^^^

next foo ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2611

def visit_next_node(node)
  if node.arguments.nil?
    bounds(node.location)
    on_next(on_args_new)
  else
    arguments = visit(node.arguments)

    bounds(node.location)
    on_next(arguments)
  end
end

#visit_nil_node(node)

This method is for internal use only.

nil ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2625

def visit_nil_node(node)
  bounds(node.location)
  on_var_ref(on_kw("nil"))
end

#visit_no_block_parameter_node(node)

This method is for internal use only.

def foo(&nil); end

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2632

def visit_no_block_parameter_node(node)
  bounds(node.location)
  on_blockarg(:nil)
end

#visit_no_keywords_parameter_node(node)

This method is for internal use only.

def foo(**nil); end

^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2639

def visit_no_keywords_parameter_node(node)
  bounds(node.location)
  on_nokw_param(nil)

  :nil
end

#visit_number_node(node) (private)

This method is for internal use only.

Visit a node that represents a number. We need to explicitly handle the unary - operator.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3413

def visit_number_node(node)
  slice = node.slice
  location = node.location

  if slice[0] == "-"
    bounds(location.copy(start_offset: location.start_offset + 1))
    value = yield slice[1..-1]

    bounds(node.location)
    on_unary(:-@, value)
  else
    bounds(location)
    yield slice
  end
end

#visit_numbered_parameters_node(node)

This method is for internal use only.

-> { _1 + _2 } ^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2648

def visit_numbered_parameters_node(node)
end

#visit_numbered_reference_read_node(node)

This method is for internal use only.

$1 ^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2653

def visit_numbered_reference_read_node(node)
  bounds(node.location)
  on_backref(node.slice)
end

#visit_optional_keyword_parameter_node(node)

This method is for internal use only.

def foo(bar: baz); end

^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2660

def visit_optional_keyword_parameter_node(node)
  bounds(node.name_loc)
  name = on_label("#{node.name}:")
  value = visit(node.value)

  [name, value]
end

#visit_optional_parameter_node(node)

This method is for internal use only.

def foo(bar = 1); end

^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2670

def visit_optional_parameter_node(node)
  bounds(node.name_loc)
  name = visit_token(node.name.to_s)
  value = visit(node.value)

  [name, value]
end

#visit_or_node(node)

This method is for internal use only.

a or b ^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2680

def visit_or_node(node)
  left = visit(node.left)
  right = visit(node.right)

  bounds(node.location)
  on_binary(left, node.operator.to_sym, right)
end

#visit_parameters_node(node)

This method is for internal use only.

def foo(bar, *baz); end

^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2690

def visit_parameters_node(node)
  requireds = node.requireds.map { |required| required.is_a?(MultiTargetNode) ? visit_destructured_parameter_node(required) : visit(required) } if node.requireds.any?
  optionals = visit_all(node.optionals) if node.optionals.any?
  rest = visit(node.rest)
  posts = node.posts.map { |post| post.is_a?(MultiTargetNode) ? visit_destructured_parameter_node(post) : visit(post) } if node.posts.any?
  keywords = visit_all(node.keywords) if node.keywords.any?
  keyword_rest = visit(node.keyword_rest)
  block = visit(node.block)

  bounds(node.location)
  on_params(requireds, optionals, rest, posts, keywords, keyword_rest, block)
end

#visit_parentheses_node(node)

This method is for internal use only.

() ^^

(1) ^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2717

def visit_parentheses_node(node)
  body =
    if node.body.nil?
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.body)
    end

  bounds(node.location)
  on_paren(body)
end

#visit_pattern_node(node) (private)

This method is for internal use only.

Visit a pattern within a pattern match. This is used to bypass the parenthesis node that can be used to wrap patterns.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 650

private def visit_pattern_node(node)
  if node.is_a?(ParenthesesNode)
    visit(node.body)
  else
    visit(node)
  end
end

#visit_pinned_expression_node(node)

This method is for internal use only.

foo => ^(bar)

^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2731

def visit_pinned_expression_node(node)
  expression = visit(node.expression)

  bounds(node.location)
  on_begin(expression)
end

#visit_pinned_variable_node(node)

This method is for internal use only.

foo = 1 and bar => ^foo

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2740

def visit_pinned_variable_node(node)
  visit(node.variable)
end

#visit_post_execution_node(node)

This method is for internal use only.

END {} ^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2746

def visit_post_execution_node(node)
  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  bounds(node.location)
  on_END(statements)
end

#visit_pre_execution_node(node)

This method is for internal use only.

BEGIN {} ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2761

def visit_pre_execution_node(node)
  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  bounds(node.location)
  on_BEGIN(statements)
end

#visit_program_node(node)

This method is for internal use only.

The top-level program node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2775

def visit_program_node(node)
  body = node.statements.body
  body << nil if body.empty?
  statements = visit_statements_node_body(body)

  bounds(node.location)
  on_program(statements)
end

#visit_range_node(node)

This method is for internal use only.

0..5 ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2786

def visit_range_node(node)
  left = visit(node.left)
  right = visit(node.right)

  bounds(node.location)
  if node.exclude_end?
    on_dot3(left, right)
  else
    on_dot2(left, right)
  end
end

#visit_rational_node(node)

This method is for internal use only.

1r ^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2800

def visit_rational_node(node)
  visit_number_node(node) { |text| on_rational(text) }
end

#visit_redo_node(node)

This method is for internal use only.

redo ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2806

def visit_redo_node(node)
  bounds(node.location)
  on_redo
end

#visit_regular_expression_node(node)

This method is for internal use only.

/foo/ ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2813

def visit_regular_expression_node(node)
  bounds(node.opening_loc)
  on_regexp_beg(node.opening)

  if node.content.empty?
    bounds(node.closing_loc)
    closing = on_regexp_end(node.closing)

    on_regexp_literal(on_regexp_new, closing)
  else
    bounds(node.content_loc)
    tstring_content = on_tstring_content(node.content)

    bounds(node.closing_loc)
    closing = on_regexp_end(node.closing)

    on_regexp_literal(on_regexp_add(on_regexp_new, tstring_content), closing)
  end
end

#visit_required_keyword_parameter_node(node)

This method is for internal use only.

def foo(bar:); end

^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2835

def visit_required_keyword_parameter_node(node)
  bounds(node.name_loc)
  [on_label("#{node.name}:"), false]
end

#visit_required_parameter_node(node)

This method is for internal use only.

def foo(bar); end

^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2842

def visit_required_parameter_node(node)
  bounds(node.location)
  on_ident(node.name.to_s)
end

#visit_rescue_modifier_node(node)

This method is for internal use only.

foo rescue bar ^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2849

def visit_rescue_modifier_node(node)
  expression = visit_write_value(node.expression)
  rescue_expression = visit(node.rescue_expression)

  bounds(node.location)
  on_rescue_mod(expression, rescue_expression)
end

#visit_rescue_node(node)

This method is for internal use only.

begin; rescue; end

^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2859

def visit_rescue_node(node)
  exceptions =
    case node.exceptions.length
    when 0
      nil
    when 1
      if (exception = node.exceptions.first).is_a?(SplatNode)
        bounds(exception.location)
        on_mrhs_add_star(on_mrhs_new, visit(exception))
      else
        [visit(node.exceptions.first)]
      end
    else
      bounds(node.location)
      length = node.exceptions.length

      node.exceptions.each_with_index.inject(on_args_new) do |mrhs, (exception, index)|
        arg = visit(exception)

        bounds(exception.location)
        mrhs = on_mrhs_new_from_args(mrhs) if index == length - 1

        if exception.is_a?(SplatNode)
          if index == length - 1
            on_mrhs_add_star(mrhs, arg)
          else
            on_args_add_star(mrhs, arg)
          end
        else
          if index == length - 1
            on_mrhs_add(mrhs, arg)
          else
            on_args_add(mrhs, arg)
          end
        end
      end
    end

  reference = visit(node.reference)
  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  subsequent = visit(node.subsequent)

  bounds(node.location)
  on_rescue(exceptions, reference, statements, subsequent)
end

#visit_rest_parameter_node(node)

This method is for internal use only.

def foo(*bar); end

^^^^

def foo(*); end

^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2917

def visit_rest_parameter_node(node)
  if node.name_loc.nil?
    bounds(node.location)
    on_rest_param(nil)
  else
    bounds(node.name_loc)
    on_rest_param(visit_token(node.name.to_s))
  end
end

#visit_retry_node(node)

This method is for internal use only.

retry ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2929

def visit_retry_node(node)
  bounds(node.location)
  on_retry
end

#visit_return_node(node)

This method is for internal use only.

return ^^^^^^

return 1 ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2939

def visit_return_node(node)
  if node.arguments.nil?
    bounds(node.location)
    on_return0
  else
    arguments = visit(node.arguments)

    bounds(node.location)
    on_return(arguments)
  end
end

#visit_self_node(node)

This method is for internal use only.

self ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2953

def visit_self_node(node)
  bounds(node.location)
  on_var_ref(on_kw("self"))
end

#visit_shareable_constant_node(node)

This method is for internal use only.

A shareable constant.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2959

def visit_shareable_constant_node(node)
  visit(node.write)
end

#visit_singleton_class_node(node)

This method is for internal use only.

class << self; end ^^^^^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2965

def visit_singleton_class_node(node)
  expression = visit(node.expression)
  bodystmt = visit_body_node(node.body&.location || node.end_keyword_loc, node.body)

  bounds(node.location)
  on_sclass(expression, bodystmt)
end

#visit_source_encoding_node(node)

This method is for internal use only.

__ENCODING__ ^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2975

def visit_source_encoding_node(node)
  bounds(node.location)
  on_var_ref(on_kw("__ENCODING__"))
end

#visit_source_file_node(node)

This method is for internal use only.

__FILE__ ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2982

def visit_source_file_node(node)
  bounds(node.location)
  on_var_ref(on_kw("__FILE__"))
end

#visit_source_line_node(node)

This method is for internal use only.

__LINE__ ^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2989

def visit_source_line_node(node)
  bounds(node.location)
  on_var_ref(on_kw("__LINE__"))
end

#visit_splat_node(node)

This method is for internal use only.

foo(*bar)

^^^^

def foo((bar, *baz)); end

^^^^

def foo(*); bar(*); end

^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3002

def visit_splat_node(node)
  visit(node.expression)
end

#visit_statements_node(node)

This method is for internal use only.

A list of statements.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3007

def visit_statements_node(node)
  bounds(node.location)
  visit_statements_node_body(node.body)
end

#visit_statements_node_body(body) (private)

This method is for internal use only.

Visit the list of statements of a statements node. We support nil statements in the list. This would normally not be allowed by the structure of the prism parse tree, but we manually add them here so that we can mirror Ripper’s void stmt.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3016

private def visit_statements_node_body(body)
  body.inject(on_stmts_new) do |stmts, stmt|
    on_stmts_add(stmts, stmt.nil? ? on_void_stmt : visit(stmt))
  end
end

#visit_string_content(part) (private)

This method is for internal use only.

Visit an individual part of a string-like node.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 2297

private def visit_string_content(part)
  if part.is_a?(StringNode)
    bounds(part.content_loc)
    on_tstring_content(part.content)
  else
    visit(part)
  end
end

#visit_string_node(node)

This method is for internal use only.

“foo” ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3024

def visit_string_node(node)
  if (content = node.content).empty?
    bounds(node.location)
    on_string_literal(on_string_content)
  elsif (opening = node.opening) == "?"
    bounds(node.location)
    on_CHAR("?#{node.content}")
  elsif opening.start_with?("<<~")
    heredoc = visit_heredoc_string_node(node.to_interpolated)

    bounds(node.location)
    on_string_literal(heredoc)
  else
    bounds(node.content_loc)
    tstring_content = on_tstring_content(content)

    bounds(node.location)
    on_string_literal(on_string_add(on_string_content, tstring_content))
  end
end

#visit_super_node(node)

This method is for internal use only.

super(foo) ^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3156

def visit_super_node(node)
  arguments, block, has_ripper_block = visit_call_node_arguments(node.arguments, node.block, trailing_comma?(node.arguments&.location || node.location, node.rparen_loc || node.location))

  if !node.lparen_loc.nil?
    bounds(node.lparen_loc)
    arguments = on_arg_paren(arguments)
  end

  bounds(node.location)
  call = on_super(arguments)

  if has_ripper_block
    bounds(node.block.location)
    on_method_add_block(call, block)
  else
    call
  end
end

#visit_symbol_node(node)

This method is for internal use only.

:foo ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3177

def visit_symbol_node(node)
  if node.value_loc.nil?
    bounds(node.location)
    on_dyna_symbol(on_string_content)
  elsif (opening = node.opening)&.match?(/^%s|['"]:?$/)
    bounds(node.value_loc)
    content = on_string_add(on_string_content, on_tstring_content(node.value))
    bounds(node.location)
    on_dyna_symbol(content)
  elsif (closing = node.closing) == ":"
    bounds(node.location)
    on_label("#{node.value}:")
  elsif opening.nil? && node.closing_loc.nil?
    bounds(node.value_loc)
    on_symbol_literal(visit_token(node.value))
  else
    bounds(node.value_loc)
    on_symbol_literal(on_symbol(visit_token(node.value)))
  end
end

#visit_token(token, allow_keywords = true) (private)

This method is for internal use only.

Visit the string content of a particular node. This method is used to split into the various token types.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3386

def visit_token(token, allow_keywords = true)
  case token
  when "."
    on_period(token)
  when "`"
    on_backtick(token)
  when *(allow_keywords ? KEYWORDS : [])
    on_kw(token)
  when /^_/
    on_ident(token)
  when /^[[:upper:]]\w*$/
    on_const(token)
  when /^@@/
    on_cvar(token)
  when /^@/
    on_ivar(token)
  when /^\$/
    on_gvar(token)
  when /^[[:punct:]]/
    on_op(token)
  else
    on_ident(token)
  end
end

#visit_true_node(node)

This method is for internal use only.

true ^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3200

def visit_true_node(node)
  bounds(node.location)
  on_var_ref(on_kw("true"))
end

#visit_undef_node(node)

This method is for internal use only.

undef foo ^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3207

def visit_undef_node(node)
  names = visit_all(node.names)

  bounds(node.location)
  on_undef(names)
end

#visit_unless_node(node)

This method is for internal use only.

unless foo; bar end ^^^^^^^^^^^^^^^^^^^

bar unless foo ^^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3219

def visit_unless_node(node)
  if node.statements.nil? || (node.predicate.location.start_offset < node.statements.location.start_offset)
    predicate = visit(node.predicate)
    statements =
      if node.statements.nil?
        bounds(node.location)
        on_stmts_add(on_stmts_new, on_void_stmt)
      else
        visit(node.statements)
      end
    else_clause = visit(node.else_clause)

    bounds(node.location)
    on_unless(predicate, statements, else_clause)
  else
    statements = visit(node.statements.body.first)
    predicate = visit(node.predicate)

    bounds(node.location)
    on_unless_mod(predicate, statements)
  end
end

#visit_until_node(node)

This method is for internal use only.

until foo; bar end ^^^^^^^^^^^^^^^^^

bar until foo ^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3247

def visit_until_node(node)
  if node.statements.nil? || (node.predicate.location.start_offset < node.statements.location.start_offset)
    predicate = visit(node.predicate)
    statements =
      if node.statements.nil?
        bounds(node.location)
        on_stmts_add(on_stmts_new, on_void_stmt)
      else
        visit(node.statements)
      end

    bounds(node.location)
    on_until(predicate, statements)
  else
    statements = visit(node.statements.body.first)
    predicate = visit(node.predicate)

    bounds(node.location)
    on_until_mod(predicate, statements)
  end
end

#visit_when_node(node)

This method is for internal use only.

case foo; when bar; end

^^^^^^^^^^^^^
[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3271

def visit_when_node(node)
  # This is a special case where we're not going to call on_when directly
  # because we don't have access to the subsequent. Instead, we'll return
  # the component parts and let the parent node handle it.
  conditions = visit_arguments(node.conditions)
  statements =
    if node.statements.nil?
      bounds(node.location)
      on_stmts_add(on_stmts_new, on_void_stmt)
    else
      visit(node.statements)
    end

  [conditions, statements]
end

#visit_while_node(node)

This method is for internal use only.

while foo; bar end ^^^^^^^^^^^^^^^^^^

bar while foo ^^^^^^^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3292

def visit_while_node(node)
  if node.statements.nil? || (node.predicate.location.start_offset < node.statements.location.start_offset)
    predicate = visit(node.predicate)
    statements =
      if node.statements.nil?
        bounds(node.location)
        on_stmts_add(on_stmts_new, on_void_stmt)
      else
        visit(node.statements)
      end

    bounds(node.location)
    on_while(predicate, statements)
  else
    statements = visit(node.statements.body.first)
    predicate = visit(node.predicate)

    bounds(node.location)
    on_while_mod(predicate, statements)
  end
end

#visit_words_sep(opening_loc, previous, current) (private)

This method is for internal use only.

Dispatch a words_sep event that contains the space between the elements of list literals.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 800

private def visit_words_sep(opening_loc, previous, current)
  end_offset = (previous.nil? ? opening_loc : previous.location).end_offset
  start_offset = current.location.start_offset

  if end_offset != start_offset
    bounds(current.location.copy(start_offset: end_offset))
    on_words_sep(source.byteslice(end_offset...start_offset))
  end
end

#visit_write_value(node) (private)

This method is for internal use only.

Visit a node that represents a write value. This is used to handle the special case of an implicit array that is generated without brackets.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3431

def visit_write_value(node)
  if node.is_a?(ArrayNode) && node.opening_loc.nil?
    elements = node.elements
    length = elements.length

    bounds(elements.first.location)
    elements.each_with_index.inject((elements.first.is_a?(SplatNode) && length == 1) ? on_mrhs_new : on_args_new) do |args, (element, index)|
      arg = visit(element)
      bounds(element.location)

      if index == length - 1
        if element.is_a?(SplatNode)
          mrhs = index == 0 ? args : on_mrhs_new_from_args(args)
          on_mrhs_add_star(mrhs, arg)
        else
          on_mrhs_add(on_mrhs_new_from_args(args), arg)
        end
      else
        case element
        when BlockArgumentNode
          on_args_add_block(args, arg)
        when SplatNode
          on_args_add_star(args, arg)
        else
          on_args_add(args, arg)
        end
      end
    end
  else
    visit(node)
  end
end

#visit_x_string_node(node)

This method is for internal use only.

foo ^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3316

def visit_x_string_node(node)
  if node.unescaped.empty?
    bounds(node.location)
    on_xstring_literal(on_xstring_new)
  elsif node.opening.start_with?("<<~")
    heredoc = visit_heredoc_x_string_node(node.to_interpolated)

    bounds(node.location)
    on_xstring_literal(heredoc)
  else
    bounds(node.content_loc)
    content = on_tstring_content(node.content)

    bounds(node.location)
    on_xstring_literal(on_xstring_add(on_xstring_new, content))
  end
end

#visit_yield_node(node)

This method is for internal use only.

yield ^^^^^

yield 1 ^^^^^^^

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3339

def visit_yield_node(node)
  if node.arguments.nil? && node.lparen_loc.nil?
    bounds(node.location)
    on_yield0
  else
    arguments =
      if node.arguments.nil?
        bounds(node.location)
        on_args_new
      else
        visit(node.arguments)
      end

    unless node.lparen_loc.nil?
      bounds(node.lparen_loc)
      arguments = on_paren(arguments)
    end

    bounds(node.location)
    on_yield(arguments)
  end
end

#void_stmt?(left, right, allow_newline) ⇒ Boolean (private)

This method is for internal use only.

Returns true if there is a semicolon between the two locations.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3379

def void_stmt?(left, right, allow_newline)
  pattern = allow_newline ? /[;\n]/ : /;/
  source.byteslice(left.end_offset...right.start_offset).match?(pattern)
end

#warn(fmt, *args) (private)

This method is called when weak warning is produced by the parser. fmt and args is printf style.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3500

def warn(fmt, *args)
end

#warning(fmt, *args) (private)

This method is called when strong warning is produced by the parser. fmt and args is printf style.

[ GitHub ]

  
# File 'lib/prism/translation/ripper.rb', line 3505

def warning(fmt, *args)
end