ruby/prism/config.yml

tokens:
  - name: EOF
    value: 1
    comment: final token in the file
  - name: MISSING
    comment: "a token that was expected but not found"
  - name: NOT_PROVIDED
    comment: "a token that was not present but it is okay"
  - name: AMPERSAND
    comment: "&"
  - name: AMPERSAND_AMPERSAND
    comment: "&&"
  - name: AMPERSAND_AMPERSAND_EQUAL
    comment: "&&="
  - name: AMPERSAND_DOT
    comment: "&."
  - name: AMPERSAND_EQUAL
    comment: "&="
  - name: BACKTICK
    comment: "`"
  - name: BACK_REFERENCE
    comment: "a back reference"
  - name: BANG
    comment: "! or !@"
  - name: BANG_EQUAL
    comment: "!="
  - name: BANG_TILDE
    comment: "!~"
  - name: BRACE_LEFT
    comment: "{"
  - name: BRACE_RIGHT
    comment: "}"
  - name: BRACKET_LEFT
    comment: "["
  - name: BRACKET_LEFT_ARRAY
    comment: "[ for the beginning of an array"
  - name: BRACKET_LEFT_RIGHT
    comment: "[]"
  - name: BRACKET_LEFT_RIGHT_EQUAL
    comment: "[]="
  - name: BRACKET_RIGHT
    comment: "]"
  - name: CARET
    comment: "^"
  - name: CARET_EQUAL
    comment: "^="
  - name: CHARACTER_LITERAL
    comment: "a character literal"
  - name: CLASS_VARIABLE
    comment: "a class variable"
  - name: COLON
    comment: ":"
  - name: COLON_COLON
    comment: "::"
  - name: COMMA
    comment: ","
  - name: COMMENT
    comment: "a comment"
  - name: CONSTANT
    comment: "a constant"
  - name: DOT
    comment: "the . call operator"
  - name: DOT_DOT
    comment: "the .. range operator"
  - name: DOT_DOT_DOT
    comment: "the ... range operator or forwarding parameter"
  - name: EMBDOC_BEGIN
    comment: "=begin"
  - name: EMBDOC_END
    comment: "=end"
  - name: EMBDOC_LINE
    comment: "a line inside of embedded documentation"
  - name: EMBEXPR_BEGIN
    comment: "#{"
  - name: EMBEXPR_END
    comment: "}"
  - name: EMBVAR
    comment: "#"
  - name: EQUAL
    comment: "="
  - name: EQUAL_EQUAL
    comment: "=="
  - name: EQUAL_EQUAL_EQUAL
    comment: "==="
  - name: EQUAL_GREATER
    comment: "=>"
  - name: EQUAL_TILDE
    comment: "=~"
  - name: FLOAT
    comment: "a floating point number"
  - name: FLOAT_IMAGINARY
    comment: "a floating pointer number with an imaginary suffix"
  - name: FLOAT_RATIONAL
    comment: "a floating pointer number with a rational suffix"
  - name: FLOAT_RATIONAL_IMAGINARY
    comment: "a floating pointer number with a rational and imaginary suffix"
  - name: GLOBAL_VARIABLE
    comment: "a global variable"
  - name: GREATER
    comment: ">"
  - name: GREATER_EQUAL
    comment: ">="
  - name: GREATER_GREATER
    comment: ">>"
  - name: GREATER_GREATER_EQUAL
    comment: ">>="
  - name: HEREDOC_END
    comment: "the end of a heredoc"
  - name: HEREDOC_START
    comment: "the start of a heredoc"
  - name: IDENTIFIER
    comment: "an identifier"
  - name: IGNORED_NEWLINE
    comment: "an ignored newline"
  - name: INSTANCE_VARIABLE
    comment: "an instance variable"
  - name: INTEGER
    comment: "an integer (any base)"
  - name: INTEGER_IMAGINARY
    comment: "an integer with an imaginary suffix"
  - name: INTEGER_RATIONAL
    comment: "an integer with a rational suffix"
  - name: INTEGER_RATIONAL_IMAGINARY
    comment: "an integer with a rational and imaginary suffix"
  - name: KEYWORD_ALIAS
    comment: "alias"
  - name: KEYWORD_AND
    comment: "and"
  - name: KEYWORD_BEGIN
    comment: "begin"
  - name: KEYWORD_BEGIN_UPCASE
    comment: "BEGIN"
  - name: KEYWORD_BREAK
    comment: "break"
  - name: KEYWORD_CASE
    comment: "case"
  - name: KEYWORD_CLASS
    comment: "class"
  - name: KEYWORD_DEF
    comment: "def"
  - name: KEYWORD_DEFINED
    comment: "defined?"
  - name: KEYWORD_DO
    comment: "do"
  - name: KEYWORD_DO_LOOP
    comment: "do keyword for a predicate in a while, until, or for loop"
  - name: KEYWORD_ELSE
    comment: "else"
  - name: KEYWORD_ELSIF
    comment: "elsif"
  - name: KEYWORD_END
    comment: "end"
  - name: KEYWORD_END_UPCASE
    comment: "END"
  - name: KEYWORD_ENSURE
    comment: "ensure"
  - name: KEYWORD_FALSE
    comment: "false"
  - name: KEYWORD_FOR
    comment: "for"
  - name: KEYWORD_IF
    comment: "if"
  - name: KEYWORD_IF_MODIFIER
    comment: "if in the modifier form"
  - name: KEYWORD_IN
    comment: "in"
  - name: KEYWORD_MODULE
    comment: "module"
  - name: KEYWORD_NEXT
    comment: "next"
  - name: KEYWORD_NIL
    comment: "nil"
  - name: KEYWORD_NOT
    comment: "not"
  - name: KEYWORD_OR
    comment: "or"
  - name: KEYWORD_REDO
    comment: "redo"
  - name: KEYWORD_RESCUE
    comment: "rescue"
  - name: KEYWORD_RESCUE_MODIFIER
    comment: "rescue in the modifier form"
  - name: KEYWORD_RETRY
    comment: "retry"
  - name: KEYWORD_RETURN
    comment: "return"
  - name: KEYWORD_SELF
    comment: "self"
  - name: KEYWORD_SUPER
    comment: "super"
  - name: KEYWORD_THEN
    comment: "then"
  - name: KEYWORD_TRUE
    comment: "true"
  - name: KEYWORD_UNDEF
    comment: "undef"
  - name: KEYWORD_UNLESS
    comment: "unless"
  - name: KEYWORD_UNLESS_MODIFIER
    comment: "unless in the modifier form"
  - name: KEYWORD_UNTIL
    comment: "until"
  - name: KEYWORD_UNTIL_MODIFIER
    comment: "until in the modifier form"
  - name: KEYWORD_WHEN
    comment: "when"
  - name: KEYWORD_WHILE
    comment: "while"
  - name: KEYWORD_WHILE_MODIFIER
    comment: "while in the modifier form"
  - name: KEYWORD_YIELD
    comment: "yield"
  - name: KEYWORD___ENCODING__
    comment: "__ENCODING__"
  - name: KEYWORD___FILE__
    comment: "__FILE__"
  - name: KEYWORD___LINE__
    comment: "__LINE__"
  - name: LABEL
    comment: "a label"
  - name: LABEL_END
    comment: "the end of a label"
  - name: LAMBDA_BEGIN
    comment: "{"
  - name: LESS
    comment: "<"
  - name: LESS_EQUAL
    comment: "<="
  - name: LESS_EQUAL_GREATER
    comment: "<=>"
  - name: LESS_LESS
    comment: "<<"
  - name: LESS_LESS_EQUAL
    comment: "<<="
  - name: METHOD_NAME
    comment: "a method name"
  - name: MINUS
    comment: "-"
  - name: MINUS_EQUAL
    comment: "-="
  - name: MINUS_GREATER
    comment: "->"
  - name: NEWLINE
    comment: "a newline character outside of other tokens"
  - name: NUMBERED_REFERENCE
    comment: "a numbered reference to a capture group in the previous regular expression match"
  - name: PARENTHESIS_LEFT
    comment: "("
  - name: PARENTHESIS_LEFT_PARENTHESES
    comment: "( for a parentheses node"
  - name: PARENTHESIS_RIGHT
    comment: ")"
  - name: PERCENT
    comment: "%"
  - name: PERCENT_EQUAL
    comment: "%="
  - name: PERCENT_LOWER_I
    comment: "%i"
  - name: PERCENT_LOWER_W
    comment: "%w"
  - name: PERCENT_LOWER_X
    comment: "%x"
  - name: PERCENT_UPPER_I
    comment: "%I"
  - name: PERCENT_UPPER_W
    comment: "%W"
  - name: PIPE
    comment: "|"
  - name: PIPE_EQUAL
    comment: "|="
  - name: PIPE_PIPE
    comment: "||"
  - name: PIPE_PIPE_EQUAL
    comment: "||="
  - name: PLUS
    comment: "+"
  - name: PLUS_EQUAL
    comment: "+="
  - name: QUESTION_MARK
    comment: "?"
  - name: REGEXP_BEGIN
    comment: "the beginning of a regular expression"
  - name: REGEXP_END
    comment: "the end of a regular expression"
  - name: SEMICOLON
    comment: ";"
  - name: SLASH
    comment: "/"
  - name: SLASH_EQUAL
    comment: "/="
  - name: STAR
    comment: "*"
  - name: STAR_EQUAL
    comment: "*="
  - name: STAR_STAR
    comment: "**"
  - name: STAR_STAR_EQUAL
    comment: "**="
  - name: STRING_BEGIN
    comment: "the beginning of a string"
  - name: STRING_CONTENT
    comment: "the contents of a string"
  - name: STRING_END
    comment: "the end of a string"
  - name: SYMBOL_BEGIN
    comment: "the beginning of a symbol"
  - name: TILDE
    comment: "~ or ~@"
  - name: UAMPERSAND
    comment: "unary &"
  - name: UCOLON_COLON
    comment: "unary ::"
  - name: UDOT_DOT
    comment: "unary .. operator"
  - name: UDOT_DOT_DOT
    comment: "unary ... operator"
  - name: UMINUS
    comment: "-@"
  - name: UMINUS_NUM
    comment: "-@ for a number"
  - name: UPLUS
    comment: "+@"
  - name: USTAR
    comment: "unary *"
  - name: USTAR_STAR
    comment: "unary **"
  - name: WORDS_SEP
    comment: "a separator between words in a list"
  - name: __END__
    comment: "marker for the point in the file at which the parser should stop"
flags:
  - name: ArgumentsNodeFlags
    values:
      - name: KEYWORD_SPLAT
        comment: "if arguments contain keyword splat"
    comment: Flags for arguments nodes.
  - name: CallNodeFlags
    values:
      - name: SAFE_NAVIGATION
        comment: "&. operator"
      - name: VARIABLE_CALL
        comment: "a call that could have been a local variable"
    comment: Flags for call nodes.
  - name: IntegerBaseFlags
    values:
      - name: BINARY
        comment: "0b prefix"
      - name: OCTAL
        comment: "0o or 0 prefix"
      - name: DECIMAL
        comment: "0d or no prefix"
      - name: HEXADECIMAL
        comment: "0x prefix"
    comment: Flags for integer nodes that correspond to the base of the integer.
  - name: LoopFlags
    values:
      - name: BEGIN_MODIFIER
        comment: "a loop after a begin statement, so the body is executed first before the condition"
    comment: Flags for while and until loop nodes.
  - name: RangeFlags
    values:
      - name: EXCLUDE_END
        comment: "... operator"
    comment: Flags for range and flip-flop nodes.
  - name: RegularExpressionFlags
    values:
      - name: IGNORE_CASE
        comment: "i - ignores the case of characters when matching"
      - name: EXTENDED
        comment: "x - ignores whitespace and allows comments in regular expressions"
      - name: MULTI_LINE
        comment: "m - allows $ to match the end of lines within strings"
      - name: ONCE
        comment: "o - only interpolates values into the regular expression once"
      - name: EUC_JP
        comment: "e - forces the EUC-JP encoding"
      - name: ASCII_8BIT
        comment: "n - forces the ASCII-8BIT encoding"
      - name: WINDOWS_31J
        comment: "s - forces the Windows-31J encoding"
      - name: UTF_8
        comment: "u - forces the UTF-8 encoding"
    comment: Flags for regular expression and match last line nodes.
  - name: StringFlags
    values:
      - name: FROZEN
        comment: "frozen by virtue of a `frozen_string_literal` comment"
    comment: Flags for string nodes.
nodes:
  - name: AliasGlobalVariableNode
    fields:
      - name: new_name
        type: node
      - name: old_name
        type: node
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of the `alias` keyword to alias a global variable.

          alias $foo $bar
          ^^^^^^^^^^^^^^^
  - name: AliasMethodNode
    fields:
      - name: new_name
        type: node
      - name: old_name
        type: node
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of the `alias` keyword to alias a method.

          alias foo bar
          ^^^^^^^^^^^^^
  - name: AlternationPatternNode
    fields:
      - name: left
        type: node
      - name: right
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents an alternation pattern in pattern matching.

          foo => bar | baz
                 ^^^^^^^^^
  - name: AndNode
    fields:
      - name: left
        type: node
      - name: right
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents the use of the `&&` operator or the `and` keyword.

          left and right
          ^^^^^^^^^^^^^^
  - name: ArgumentsNode
    fields:
      - name: arguments
        type: node[]
      - name: flags
        type: flags
        kind: ArgumentsNodeFlags
    comment: |
      Represents a set of arguments to a method or a keyword.

          return foo, bar, baz
                 ^^^^^^^^^^^^^
  - name: ArrayNode
    fields:
      - name: elements
        type: node[]
      - name: opening_loc
        type: location?
      - name: closing_loc
        type: location?
    comment: |
      Represents an array literal. This can be a regular array using brackets or
      a special array using % like %w or %i.

          [1, 2, 3]
          ^^^^^^^^^
  - name: ArrayPatternNode
    fields:
      - name: constant
        type: node?
      - name: requireds
        type: node[]
      - name: rest
        type: node?
      - name: posts
        type: node[]
      - name: opening_loc
        type: location?
      - name: closing_loc
        type: location?
    comment: |
      Represents an array pattern in pattern matching.

          foo in 1, 2
          ^^^^^^^^^^^

          foo in [1, 2]
          ^^^^^^^^^^^^^

          foo in *1
          ^^^^^^^^^

          foo in Bar[]
          ^^^^^^^^^^^^

          foo in Bar[1, 2, 3]
          ^^^^^^^^^^^^^^^^^^^
  - name: AssocNode
    fields:
      - name: key
        type: node
      - name: value
        type: node?
      - name: operator_loc
        type: location?
    comment: |
      Represents a hash key/value pair.

          { a => b }
            ^^^^^^
  - name: AssocSplatNode
    fields:
      - name: value
        type: node?
      - name: operator_loc
        type: location
    comment: |
      Represents a splat in a hash literal.

          { **foo }
            ^^^^^
  - name: BackReferenceReadNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents reading a reference to a field in the previous match.

          $'
          ^^
  - name: BeginNode
    fields:
      - name: begin_keyword_loc
        type: location?
      - name: statements
        type: node?
        kind: StatementsNode
      - name: rescue_clause
        type: node?
        kind: RescueNode
      - name: else_clause
        type: node?
        kind: ElseNode
      - name: ensure_clause
        type: node?
        kind: EnsureNode
      - name: end_keyword_loc
        type: location?
    newline: false
    comment: |
      Represents a begin statement.

          begin
            foo
          end
          ^^^^^
  - name: BlockArgumentNode
    fields:
      - name: expression
        type: node?
      - name: operator_loc
        type: location
    comment: |
      Represents block method arguments.

          bar(&args)
          ^^^^^^^^^^
  - name: BlockLocalVariableNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents a block local variable.

          a { |; b| }
                 ^
  - name: BlockNode
    fields:
      - name: locals
        type: constant[]
      - name: parameters
        type: node?
        kind: BlockParametersNode
      - name: body
        type: node?
      - name: opening_loc
        type: location
      - name: closing_loc
        type: location
    comment: |
      Represents a block of ruby code.

      [1, 2, 3].each { |i| puts x }
                     ^^^^^^^^^^^^^^
  - name: BlockParameterNode
    fields:
      - name: name
        type: constant?
      - name: name_loc
        type: location?
      - name: operator_loc
        type: location
    comment: |
      Represents a block parameter to a method, block, or lambda definition.

          def a(&b)
                ^^
          end
  - name: BlockParametersNode
    fields:
      - name: parameters
        type: node?
        kind: ParametersNode
      - name: locals
        type: node[]
      - name: opening_loc
        type: location?
      - name: closing_loc
        type: location?
    comment: |
      Represents a block's parameters declaration.

          -> (a, b = 1; local) { }
             ^^^^^^^^^^^^^^^^^

          foo do |a, b = 1; local|
                 ^^^^^^^^^^^^^^^^^
          end
  - name: BreakNode
    fields:
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of the `break` keyword.

          break foo
          ^^^^^^^^^
  - name: CallAndWriteNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: message_loc
        type: location?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: read_name
        type: constant
      - name: write_name
        type: constant
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator on a call.

          foo.bar &&= value
          ^^^^^^^^^^^^^^^^^
  - name: CallNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: message_loc
        type: location?
      - name: opening_loc
        type: location?
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: closing_loc
        type: location?
      - name: block
        type: node?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: name
        type: constant
    comment: |
      Represents a method call, in all of the various forms that can take.

          foo
          ^^^

          foo()
          ^^^^^

          +foo
          ^^^^

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

          foo.bar
          ^^^^^^^

          foo&.bar
          ^^^^^^^^
  - name: CallOperatorWriteNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: message_loc
        type: location?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: read_name
        type: constant
      - name: write_name
        type: constant
      - name: operator
        type: constant
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of an assignment operator on a call.

          foo.bar += baz
          ^^^^^^^^^^^^^^
  - name: CallOrWriteNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: message_loc
        type: location?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: read_name
        type: constant
      - name: write_name
        type: constant
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator on a call.

          foo.bar ||= value
          ^^^^^^^^^^^^^^^^^
  - name: CapturePatternNode
    fields:
      - name: value
        type: node
      - name: target
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents assigning to a local variable in pattern matching.

          foo => [bar => baz]
                 ^^^^^^^^^^^^
  - name: CaseNode
    fields:
      - name: predicate
        type: node?
      - name: conditions
        type: node[]
      - name: consequent
        type: node?
        kind: ElseNode
      - name: case_keyword_loc
        type: location
      - name: end_keyword_loc
        type: location
    comment: |
      Represents the use of a case statement.

          case true
          when false
          end
          ^^^^^^^^^^
  - name: ClassNode
    fields:
      - name: locals
        type: constant[]
      - name: class_keyword_loc
        type: location
      - name: constant_path
        type: node
      - name: inheritance_operator_loc
        type: location?
      - name: superclass
        type: node?
      - name: body
        type: node?
      - name: end_keyword_loc
        type: location
      - name: name
        type: constant
    comment: |
      Represents a class declaration involving the `class` keyword.

          class Foo end
          ^^^^^^^^^^^^^
  - name: ClassVariableAndWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator for assignment to a class variable.

          @@target &&= value
          ^^^^^^^^^^^^^^^^^^
  - name: ClassVariableOperatorWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: operator
        type: constant
    comment: |
      Represents assigning to a class variable using an operator that isn't `=`.

          @@target += value
          ^^^^^^^^^^^^^^^^^
  - name: ClassVariableOrWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator for assignment to a class variable.

          @@target ||= value
          ^^^^^^^^^^^^^^^^^^
  - name: ClassVariableReadNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents referencing a class variable.

          @@foo
          ^^^^^
  - name: ClassVariableTargetNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents writing to a class variable in a context that doesn't have an explicit value.

          @@foo, @@bar = baz
          ^^^^^  ^^^^^
  - name: ClassVariableWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: value
        type: node
      - name: operator_loc
        type: location?
    comment: |
      Represents writing to a class variable.

          @@foo = 1
          ^^^^^^^^^
  - name: ConstantAndWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator for assignment to a constant.

          Target &&= value
          ^^^^^^^^^^^^^^^^
  - name: ConstantOperatorWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: operator
        type: constant
    comment: |
      Represents assigning to a constant using an operator that isn't `=`.

          Target += value
          ^^^^^^^^^^^^^^^
  - name: ConstantOrWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator for assignment to a constant.

          Target ||= value
          ^^^^^^^^^^^^^^^^
  - name: ConstantPathAndWriteNode
    fields:
      - name: target
        type: node
        kind: ConstantPathNode
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator for assignment to a constant path.

          Parent::Child &&= value
          ^^^^^^^^^^^^^^^^^^^^^^^
  - name: ConstantPathNode
    fields:
      - name: parent
        type: node?
      - name: child
        type: node
      - name: delimiter_loc
        type: location
    comment: |
      Represents accessing a constant through a path of `::` operators.

          Foo::Bar
          ^^^^^^^^
  - name: ConstantPathOperatorWriteNode
    fields:
      - name: target
        type: node
        kind: ConstantPathNode
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: operator
        type: constant
    comment: |
      Represents assigning to a constant path using an operator that isn't `=`.

          Parent::Child += value
          ^^^^^^^^^^^^^^^^^^^^^^
  - name: ConstantPathOrWriteNode
    fields:
      - name: target
        type: node
        kind: ConstantPathNode
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator for assignment to a constant path.

          Parent::Child ||= value
          ^^^^^^^^^^^^^^^^^^^^^^^
  - name: ConstantPathTargetNode
    fields:
      - name: parent
        type: node?
      - name: child
        type: node
      - name: delimiter_loc
        type: location
    comment: |
      Represents writing to a constant path in a context that doesn't have an explicit value.

          Foo::Foo, Bar::Bar = baz
          ^^^^^^^^  ^^^^^^^^
  - name: ConstantPathWriteNode
    fields:
      - name: target
        type: node
        kind: ConstantPathNode
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents writing to a constant path.

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

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

          ::Foo::Bar = 1
          ^^^^^^^^^^^^^^
  - name: ConstantReadNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents referencing a constant.

          Foo
          ^^^
  - name: ConstantTargetNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents writing to a constant in a context that doesn't have an explicit value.

          Foo, Bar = baz
          ^^^  ^^^
  - name: ConstantWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: value
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents writing to a constant.

          Foo = 1
          ^^^^^^^
  - name: DefNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: receiver
        type: node?
      - name: parameters
        type: node?
        kind: ParametersNode
      - name: body
        type: node?
      - name: locals
        type: constant[]
      - name: def_keyword_loc
        type: location
      - name: operator_loc
        type: location?
      - name: lparen_loc
        type: location?
      - name: rparen_loc
        type: location?
      - name: equal_loc
        type: location?
      - name: end_keyword_loc
        type: location?
    comment: |
      Represents a method definition.

          def method
          end
          ^^^^^^^^^^
  - name: DefinedNode
    fields:
      - name: lparen_loc
        type: location?
      - name: value
        type: node
      - name: rparen_loc
        type: location?
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of the `defined?` keyword.

          defined?(a)
          ^^^^^^^^^^^
  - name: ElseNode
    fields:
      - name: else_keyword_loc
        type: location
      - name: statements
        type: node?
        kind: StatementsNode
      - name: end_keyword_loc
        type: location?
    comment: |
      Represents an `else` clause in a `case`, `if`, or `unless` statement.

          if a then b else c end
                      ^^^^^^^^^^
  - name: EmbeddedStatementsNode
    fields:
      - name: opening_loc
        type: location
      - name: statements
        type: node?
        kind: StatementsNode
      - name: closing_loc
        type: location
    comment: |
      Represents an interpolated set of statements.

          "foo #{bar}"
               ^^^^^^
  - name: EmbeddedVariableNode
    fields:
      - name: operator_loc
        type: location
      - name: variable
        type: node
    comment: |
      Represents an interpolated variable.

          "foo #@bar"
               ^^^^^
  - name: EnsureNode
    fields:
      - name: ensure_keyword_loc
        type: location
      - name: statements
        type: node?
        kind: StatementsNode
      - name: end_keyword_loc
        type: location
    comment: |
      Represents an `ensure` clause in a `begin` statement.

          begin
            foo
          ensure
          ^^^^^^
            bar
          end
  - name: FalseNode
    comment: |
      Represents the use of the literal `false` keyword.

          false
          ^^^^^
  - name: FindPatternNode
    fields:
      - name: constant
        type: node?
      - name: left
        type: node
      - name: requireds
        type: node[]
      - name: right
        type: node
      - name: opening_loc
        type: location?
      - name: closing_loc
        type: location?
    comment: |
      Represents a find pattern in pattern matching.

          foo in *bar, baz, *qux
                 ^^^^^^^^^^^^^^^

          foo in [*bar, baz, *qux]
                 ^^^^^^^^^^^^^^^^^

          foo in Foo(*bar, baz, *qux)
                 ^^^^^^^^^^^^^^^^^^^^
  - name: FlipFlopNode
    fields:
      - name: left
        type: node?
      - name: right
        type: node?
      - name: operator_loc
        type: location
      - name: flags
        type: flags
        kind: RangeFlags
    comment: |
      Represents the use of the `..` or `...` operators to create flip flops.

          baz if foo .. bar
                 ^^^^^^^^^^
  - name: FloatNode
    comment: |
      Represents a floating point number literal.

          1.0
          ^^^
  - name: ForNode
    fields:
      - name: index
        type: node
      - name: collection
        type: node
      - name: statements
        type: node?
        kind: StatementsNode
      - name: for_keyword_loc
        type: location
      - name: in_keyword_loc
        type: location
      - name: do_keyword_loc
        type: location?
      - name: end_keyword_loc
        type: location
    comment: |
      Represents the use of the `for` keyword.

          for i in a end
          ^^^^^^^^^^^^^^
  - name: ForwardingArgumentsNode
    comment: |
      Represents forwarding all arguments to this method to another method.

          def foo(...)
            bar(...)
                ^^^
          end
  - name: ForwardingParameterNode
    comment: |
      Represents the use of the forwarding parameter in a method, block, or lambda declaration.

          def foo(...)
                  ^^^
          end
  - name: ForwardingSuperNode
    fields:
      - name: block
        type: node?
        kind: BlockNode
    comment: |
      Represents the use of the `super` keyword without parentheses or arguments.

          super
          ^^^^^
  - name: GlobalVariableAndWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator for assignment to a global variable.

          $target &&= value
          ^^^^^^^^^^^^^^^^^
  - name: GlobalVariableOperatorWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: operator
        type: constant
    comment: |
      Represents assigning to a global variable using an operator that isn't `=`.

          $target += value
          ^^^^^^^^^^^^^^^^
  - name: GlobalVariableOrWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator for assignment to a global variable.

          $target ||= value
          ^^^^^^^^^^^^^^^^^
  - name: GlobalVariableReadNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents referencing a global variable.

          $foo
          ^^^^
  - name: GlobalVariableTargetNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents writing to a global variable in a context that doesn't have an explicit value.

          $foo, $bar = baz
          ^^^^  ^^^^
  - name: GlobalVariableWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: value
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents writing to a global variable.

          $foo = 1
          ^^^^^^^^
  - name: HashNode
    fields:
      - name: opening_loc
        type: location
      - name: elements
        type: node[]
      - name: closing_loc
        type: location
    comment: |
      Represents a hash literal.

          { a => b }
          ^^^^^^^^^^
  - name: HashPatternNode
    fields:
      - name: constant
        type: node?
      - name: elements
        type: node[]
      - name: rest
        type: node?
      - name: opening_loc
        type: location?
      - name: closing_loc
        type: location?
    comment: |
      Represents a hash pattern in pattern matching.

          foo => { a: 1, b: 2 }
                 ^^^^^^^^^^^^^^

          foo => { a: 1, b: 2, **c }
                 ^^^^^^^^^^^^^^^^^^^
  - name: IfNode
    fields:
      - name: if_keyword_loc
        type: location?
      - name: predicate
        type: node
      - name: then_keyword_loc
        type: location?
      - name: statements
        type: node?
        kind: StatementsNode
      - name: consequent
        type: node?
      - name: end_keyword_loc
        type: location?
    newline: predicate
    comment: |
      Represents the use of the `if` keyword, either in the block form or the modifier form.

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

          if foo then bar end
          ^^^^^^^^^^^^^^^^^^^
  - name: ImaginaryNode
    fields:
      - name: numeric
        type: node
    comment: |
      Represents an imaginary number literal.

          1.0i
          ^^^^
  - name: ImplicitNode
    fields:
      - name: value
        type: node
    comment: |
      Represents a node that is implicitly being added to the tree but doesn't
      correspond directly to a node in the source.

          { foo: }
            ^^^^

          { Foo: }
            ^^^^
  - name: InNode
    fields:
      - name: pattern
        type: node
      - name: statements
        type: node?
        kind: StatementsNode
      - name: in_loc
        type: location
      - name: then_loc
        type: location?
    comment: |
      Represents the use of the `in` keyword in a case statement.

          case a; in b then c end
                  ^^^^^^^^^^^
  - name: IndexAndWriteNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: opening_loc
        type: location
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: closing_loc
        type: location
      - name: block
        type: node?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator on a call to the `[]` method.

          foo.bar[baz] &&= value
          ^^^^^^^^^^^^^^^^^^^^^^
  - name: IndexOperatorWriteNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: opening_loc
        type: location
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: closing_loc
        type: location
      - name: block
        type: node?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: operator
        type: constant
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of an assignment operator on a call to `[]`.

          foo.bar[baz] += value
          ^^^^^^^^^^^^^^^^^^^^^
  - name: IndexOrWriteNode
    fields:
      - name: receiver
        type: node?
      - name: call_operator_loc
        type: location?
      - name: opening_loc
        type: location
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: closing_loc
        type: location
      - name: block
        type: node?
      - name: flags
        type: flags
        kind: CallNodeFlags
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator on a call to `[]`.

          foo.bar[baz] ||= value
          ^^^^^^^^^^^^^^^^^^^^^^
  - name: InstanceVariableAndWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `&&=` operator for assignment to an instance variable.

          @target &&= value
          ^^^^^^^^^^^^^^^^^
  - name: InstanceVariableOperatorWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: operator
        type: constant
    comment: |
      Represents assigning to an instance variable using an operator that isn't `=`.

          @target += value
          ^^^^^^^^^^^^^^^^
  - name: InstanceVariableOrWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents the use of the `||=` operator for assignment to an instance variable.

          @target ||= value
          ^^^^^^^^^^^^^^^^^
  - name: InstanceVariableReadNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents referencing an instance variable.

          @foo
          ^^^^
  - name: InstanceVariableTargetNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents writing to an instance variable in a context that doesn't have an explicit value.

          @foo, @bar = baz
          ^^^^  ^^^^
  - name: InstanceVariableWriteNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: value
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents writing to an instance variable.

          @foo = 1
          ^^^^^^^^
  - name: IntegerNode
    fields:
      - name: flags
        type: flags
        kind: IntegerBaseFlags
    comment: |
      Represents an integer number literal.

          1
          ^
  - name: InterpolatedMatchLastLineNode
    fields:
      - name: opening_loc
        type: location
      - name: parts
        type: node[]
      - name: closing_loc
        type: location
      - name: flags
        type: flags
        kind: RegularExpressionFlags
    newline: parts
    comment: |
      Represents a regular expression literal that contains interpolation that
      is being used in the predicate of a conditional to implicitly match
      against the last line read by an IO object.

          if /foo #{bar} baz/ then end
             ^^^^^^^^^^^^^^^^
  - name: InterpolatedRegularExpressionNode
    fields:
      - name: opening_loc
        type: location
      - name: parts
        type: node[]
      - name: closing_loc
        type: location
      - name: flags
        type: flags
        kind: RegularExpressionFlags
    newline: parts
    comment: |
      Represents a regular expression literal that contains interpolation.

          /foo #{bar} baz/
          ^^^^^^^^^^^^^^^^
  - name: InterpolatedStringNode
    fields:
      - name: opening_loc
        type: location?
      - name: parts
        type: node[]
      - name: closing_loc
        type: location?
    newline: parts
    comment: |
      Represents a string literal that contains interpolation.

          "foo #{bar} baz"
          ^^^^^^^^^^^^^^^^
  - name: InterpolatedSymbolNode
    fields:
      - name: opening_loc
        type: location?
      - name: parts
        type: node[]
      - name: closing_loc
        type: location?
    newline: parts
    comment: |
      Represents a symbol literal that contains interpolation.

          :"foo #{bar} baz"
          ^^^^^^^^^^^^^^^^^
  - name: InterpolatedXStringNode
    fields:
      - name: opening_loc
        type: location
      - name: parts
        type: node[]
      - name: closing_loc
        type: location
    newline: parts
    comment: |
      Represents an xstring literal that contains interpolation.

          `foo #{bar} baz`
          ^^^^^^^^^^^^^^^^
  - name: KeywordHashNode
    fields:
      - name: elements
        type: node[]
    comment: |
      Represents a hash literal without opening and closing braces.

          foo(a: b)
              ^^^^
  - name: KeywordRestParameterNode
    fields:
      - name: name
        type: constant?
      - name: name_loc
        type: location?
      - name: operator_loc
        type: location
    comment: |
      Represents a keyword rest parameter to a method, block, or lambda definition.

          def a(**b)
                ^^^
          end
  - name: LambdaNode
    fields:
      - name: locals
        type: constant[]
      - name: operator_loc
        type: location
      - name: opening_loc
        type: location
      - name: closing_loc
        type: location
      - name: parameters
        type: node?
        kind: BlockParametersNode
      - name: body
        type: node?
    comment: |
      Represents using a lambda literal (not the lambda method call).

          ->(value) { value * 2 }
          ^^^^^^^^^^^^^^^^^^^^^^^
  - name: LocalVariableAndWriteNode
    fields:
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: name
        type: constant
      - name: depth
        type: uint32
    comment: |
      Represents the use of the `&&=` operator for assignment to a local variable.

          target &&= value
          ^^^^^^^^^^^^^^^^
  - name: LocalVariableOperatorWriteNode
    fields:
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: name
        type: constant
      - name: operator
        type: constant
      - name: depth
        type: uint32
    comment: |
      Represents assigning to a local variable using an operator that isn't `=`.

          target += value
          ^^^^^^^^^^^^^^^
  - name: LocalVariableOrWriteNode
    fields:
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
      - name: name
        type: constant
      - name: depth
        type: uint32
    comment: |
      Represents the use of the `||=` operator for assignment to a local variable.

          target ||= value
          ^^^^^^^^^^^^^^^^
  - name: LocalVariableReadNode
    fields:
      - name: name
        type: constant
      - name: depth
        type: uint32
    comment: |
      Represents reading a local variable. Note that this requires that a local
      variable of the same name has already been written to in the same scope,
      otherwise it is parsed as a method call.

          foo
          ^^^
  - name: LocalVariableTargetNode
    fields:
      - name: name
        type: constant
      - name: depth
        type: uint32
    comment: |
      Represents writing to a local variable in a context that doesn't have an explicit value.

          foo, bar = baz
          ^^^  ^^^
  - name: LocalVariableWriteNode
    fields:
      - name: name
        type: constant
      - name: depth
        type: uint32
      - name: name_loc
        type: location
      - name: value
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents writing to a local variable.

          foo = 1
          ^^^^^^^
  - name: MatchLastLineNode
    fields:
      - name: opening_loc
        type: location
      - name: content_loc
        type: location
      - name: closing_loc
        type: location
      - name: unescaped
        type: string
      - name: flags
        type: flags
        kind: RegularExpressionFlags
    comment: |
      Represents a regular expression literal used in the predicate of a
      conditional to implicitly match against the last line read by an IO
      object.

          if /foo/i then end
             ^^^^^^
  - name: MatchPredicateNode
    fields:
      - name: value
        type: node
      - name: pattern
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents the use of the modifier `in` operator.

          foo in bar
          ^^^^^^^^^^
  - name: MatchRequiredNode
    fields:
      - name: value
        type: node
      - name: pattern
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents the use of the `=>` operator.

          foo => bar
          ^^^^^^^^^^
  - name: MatchWriteNode
    fields:
      - name: call
        type: node
        kind: CallNode
      - name: locals
        type: constant[]
    comment: |
      Represents writing local variables using a regular expression match with
      named capture groups.

          /(?<foo>bar)/ =~ baz
          ^^^^^^^^^^^^^^^^^^^^
  - name: MissingNode
    comment: |
      Represents a node that is missing from the source and results in a syntax
      error.
  - name: ModuleNode
    fields:
      - name: locals
        type: constant[]
      - name: module_keyword_loc
        type: location
      - name: constant_path
        type: node
      - name: body
        type: node?
      - name: end_keyword_loc
        type: location
      - name: name
        type: constant
    comment: |
      Represents a module declaration involving the `module` keyword.

          module Foo end
          ^^^^^^^^^^^^^^
  - name: MultiTargetNode
    fields:
      - name: lefts
        type: node[]
      - name: rest
        type: node?
      - name: rights
        type: node[]
      - name: lparen_loc
        type: location?
      - name: rparen_loc
        type: location?
    comment: |
      Represents a multi-target expression.

          a, (b, c) = 1, 2, 3
             ^^^^^^
  - name: MultiWriteNode
    fields:
      - name: lefts
        type: node[]
      - name: rest
        type: node?
      - name: rights
        type: node[]
      - name: lparen_loc
        type: location?
      - name: rparen_loc
        type: location?
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents a write to a multi-target expression.

          a, b, c = 1, 2, 3
          ^^^^^^^^^^^^^^^^^
  - name: NextNode
    fields:
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of the `next` keyword.

          next 1
          ^^^^^^
  - name: NilNode
    comment: |
      Represents the use of the `nil` keyword.

          nil
          ^^^
  - name: NoKeywordsParameterNode
    fields:
      - name: operator_loc
        type: location
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of `**nil` inside method arguments.

          def a(**nil)
                ^^^^^
          end
  - name: NumberedReferenceReadNode
    fields:
      - name: number
        type: uint32
    comment: |
      Represents reading a numbered reference to a capture in the previous match.

          $1
          ^^
  - name: OptionalKeywordParameterNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents an optional keyword parameter to a method, block, or lambda definition.

          def a(b: 1)
                ^^^^
          end
  - name: OptionalParameterNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
      - name: operator_loc
        type: location
      - name: value
        type: node
    comment: |
      Represents an optional parameter to a method, block, or lambda definition.

          def a(b = 1)
                ^^^^^
          end
  - name: OrNode
    fields:
      - name: left
        type: node
      - name: right
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents the use of the `||` operator or the `or` keyword.

          left or right
          ^^^^^^^^^^^^^
  - name: ParametersNode
    fields:
      - name: requireds
        type: node[]
      - name: optionals
        type: node[]
      - name: rest
        type: node?
        kind: RestParameterNode
      - name: posts
        type: node[]
      - name: keywords
        type: node[]
      - name: keyword_rest
        type: node?
      - name: block
        type: node?
        kind: BlockParameterNode
    comment: |
      Represents the list of parameters on a method, block, or lambda definition.

          def a(b, c, d)
                ^^^^^^^
          end
  - name: ParenthesesNode
    fields:
      - name: body
        type: node?
      - name: opening_loc
        type: location
      - name: closing_loc
        type: location
    newline: false
    comment: |
      Represents a parenthesized expression

          (10 + 34)
          ^^^^^^^^^
  - name: PinnedExpressionNode
    fields:
      - name: expression
        type: node
      - name: operator_loc
        type: location
      - name: lparen_loc
        type: location
      - name: rparen_loc
        type: location
    comment: |
      Represents the use of the `^` operator for pinning an expression in a
      pattern matching expression.

          foo in ^(bar)
                 ^^^^^^
  - name: PinnedVariableNode
    fields:
      - name: variable
        type: node
      - name: operator_loc
        type: location
    comment: |
      Represents the use of the `^` operator for pinning a variable in a pattern
      matching expression.

          foo in ^bar
                 ^^^^
  - name: PostExecutionNode
    fields:
      - name: statements
        type: node?
        kind: StatementsNode
      - name: keyword_loc
        type: location
      - name: opening_loc
        type: location
      - name: closing_loc
        type: location
    comment: |
      Represents the use of the `END` keyword.

          END { foo }
          ^^^^^^^^^^^
  - name: PreExecutionNode
    fields:
      - name: statements
        type: node?
        kind: StatementsNode
      - name: keyword_loc
        type: location
      - name: opening_loc
        type: location
      - name: closing_loc
        type: location
    comment: |
      Represents the use of the `BEGIN` keyword.

          BEGIN { foo }
          ^^^^^^^^^^^^^
  - name: ProgramNode
    fields:
      - name: locals
        type: constant[]
      - name: statements
        type: node
        kind: StatementsNode
    comment: The top level node of any parse tree.
  - name: RangeNode
    fields:
      - name: left
        type: node?
      - name: right
        type: node?
      - name: operator_loc
        type: location
      - name: flags
        type: flags
        kind: RangeFlags
    comment: |
      Represents the use of the `..` or `...` operators.

          1..2
          ^^^^

          c if a =~ /left/ ... b =~ /right/
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  - name: RationalNode
    fields:
      - name: numeric
        type: node
    comment: |
      Represents a rational number literal.

          1.0r
          ^^^^
  - name: RedoNode
    comment: |
      Represents the use of the `redo` keyword.

          redo
          ^^^^
  - name: RegularExpressionNode
    fields:
      - name: opening_loc
        type: location
      - name: content_loc
        type: location
      - name: closing_loc
        type: location
      - name: unescaped
        type: string
      - name: flags
        type: flags
        kind: RegularExpressionFlags
    comment: |
      Represents a regular expression literal with no interpolation.

          /foo/i
          ^^^^^^
  - name: RequiredKeywordParameterNode
    fields:
      - name: name
        type: constant
      - name: name_loc
        type: location
    comment: |
      Represents a required keyword parameter to a method, block, or lambda definition.

          def a(b: )
                ^^
          end
  - name: RequiredParameterNode
    fields:
      - name: name
        type: constant
    comment: |
      Represents a required parameter to a method, block, or lambda definition.

          def a(b)
                ^
          end
  - name: RescueModifierNode
    fields:
      - name: expression
        type: node
      - name: keyword_loc
        type: location
      - name: rescue_expression
        type: node
    newline: expression
    comment: |
      Represents an expression modified with a rescue.

          foo rescue nil
          ^^^^^^^^^^^^^^
  - name: RescueNode
    fields:
      - name: keyword_loc
        type: location
      - name: exceptions
        type: node[]
      - name: operator_loc
        type: location?
      - name: reference
        type: node?
      - name: statements
        type: node?
        kind: StatementsNode
      - name: consequent
        type: node?
        kind: RescueNode
    comment: |
      Represents a rescue statement.

          begin
          rescue Foo, *splat, Bar => ex
            foo
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          end

      `Foo, *splat, Bar` are in the `exceptions` field.
      `ex` is in the `exception` field.
  - name: RestParameterNode
    fields:
      - name: name
        type: constant?
      - name: name_loc
        type: location?
      - name: operator_loc
        type: location
    comment: |
      Represents a rest parameter to a method, block, or lambda definition.

          def a(*b)
                ^^
          end
  - name: RetryNode
    comment: |
      Represents the use of the `retry` keyword.

          retry
          ^^^^^
  - name: ReturnNode
    fields:
      - name: keyword_loc
        type: location
      - name: arguments
        type: node?
        kind: ArgumentsNode
    comment: |
      Represents the use of the `return` keyword.

          return 1
          ^^^^^^^^
  - name: SelfNode
    comment: |
      Represents the `self` keyword.

          self
          ^^^^
  - name: SingletonClassNode
    fields:
      - name: locals
        type: constant[]
      - name: class_keyword_loc
        type: location
      - name: operator_loc
        type: location
      - name: expression
        type: node
      - name: body
        type: node?
      - name: end_keyword_loc
        type: location
    comment: |
      Represents a singleton class declaration involving the `class` keyword.

          class << self end
          ^^^^^^^^^^^^^^^^^
  - name: SourceEncodingNode
    comment: |
      Represents the use of the `__ENCODING__` keyword.

          __ENCODING__
          ^^^^^^^^^^^^
  - name: SourceFileNode
    fields:
      - name: filepath
        type: string
    comment: |
      Represents the use of the `__FILE__` keyword.

          __FILE__
          ^^^^^^^^
  - name: SourceLineNode
    comment: |
      Represents the use of the `__LINE__` keyword.

          __LINE__
          ^^^^^^^^
  - name: SplatNode
    fields:
      - name: operator_loc
        type: location
      - name: expression
        type: node?
    comment: |
      Represents the use of the splat operator.

          [*a]
           ^^
  - name: StatementsNode
    fields:
      - name: body
        type: node[]
    comment: |
      Represents a set of statements contained within some scope.

          foo; bar; baz
          ^^^^^^^^^^^^^
  - name: StringConcatNode
    fields:
      - name: left
        type: node
      - name: right
        type: node
    comment: |
      Represents the use of compile-time string concatenation.

          "foo" "bar"
          ^^^^^^^^^^^
  - name: StringNode
    fields:
      - name: flags
        type: flags
        kind: StringFlags
      - name: opening_loc
        type: location?
      - name: content_loc
        type: location
      - name: closing_loc
        type: location?
      - name: unescaped
        type: string
    comment: |
      Represents a string literal, a string contained within a `%w` list, or
      plain string content within an interpolated string.

          "foo"
          ^^^^^

          %w[foo]
             ^^^

          "foo #{bar} baz"
           ^^^^      ^^^^
  - name: SuperNode
    fields:
      - name: keyword_loc
        type: location
      - name: lparen_loc
        type: location?
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: rparen_loc
        type: location?
      - name: block
        type: node?
    comment: |
      Represents the use of the `super` keyword with parentheses or arguments.

          super()
          ^^^^^^^

          super foo, bar
          ^^^^^^^^^^^^^^
  - name: SymbolNode
    fields:
      - name: opening_loc
        type: location?
      - name: value_loc
        type: location?
      - name: closing_loc
        type: location?
      - name: unescaped
        type: string
    comment: |
      Represents a symbol literal or a symbol contained within a `%i` list.

          :foo
          ^^^^

          %i[foo]
             ^^^
  - name: TrueNode
    comment: |
      Represents the use of the literal `true` keyword.

          true
          ^^^^
  - name: UndefNode
    fields:
      - name: names
        type: node[]
      - name: keyword_loc
        type: location
    comment: |
      Represents the use of the `undef` keyword.

          undef :foo, :bar, :baz
          ^^^^^^^^^^^^^^^^^^^^^^
  - name: UnlessNode
    fields:
      - name: keyword_loc
        type: location
      - name: predicate
        type: node
      - name: then_keyword_loc
        type: location?
      - name: statements
        type: node?
        kind: StatementsNode
      - name: consequent
        type: node?
        kind: ElseNode
      - name: end_keyword_loc
        type: location?
    newline: predicate
    comment: |
      Represents the use of the `unless` keyword, either in the block form or the modifier form.

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

          unless foo then bar end
          ^^^^^^^^^^^^^^^^^^^^^^^
  - name: UntilNode
    fields:
      - name: keyword_loc
        type: location
      - name: closing_loc
        type: location?
      - name: predicate
        type: node
      - name: statements
        type: node?
        kind: StatementsNode
      - name: flags
        type: flags
        kind: LoopFlags
    newline: predicate
    comment: |
      Represents the use of the `until` keyword, either in the block form or the modifier form.

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

          until foo do bar end
          ^^^^^^^^^^^^^^^^^^^^
  - name: WhenNode
    fields:
      - name: keyword_loc
        type: location
      - name: conditions
        type: node[]
      - name: statements
        type: node?
        kind: StatementsNode
    comment: |
      Represents the use of the `when` keyword within a case statement.

          case true
          when true
          ^^^^^^^^^
          end
  - name: WhileNode
    fields:
      - name: keyword_loc
        type: location
      - name: closing_loc
        type: location?
      - name: predicate
        type: node
      - name: statements
        type: node?
        kind: StatementsNode
      - name: flags
        type: flags
        kind: LoopFlags
    newline: predicate
    comment: |
      Represents the use of the `while` keyword, either in the block form or the modifier form.

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

          while foo do bar end
          ^^^^^^^^^^^^^^^^^^^^
  - name: XStringNode
    fields:
      - name: opening_loc
        type: location
      - name: content_loc
        type: location
      - name: closing_loc
        type: location
      - name: unescaped
        type: string
    comment: |
      Represents an xstring literal with no interpolation.

          `foo`
          ^^^^^
  - name: YieldNode
    fields:
      - name: keyword_loc
        type: location
      - name: lparen_loc
        type: location?
      - name: arguments
        type: node?
        kind: ArgumentsNode
      - name: rparen_loc
        type: location?
    comment: |
      Represents the use of the `yield` keyword.

          yield 1
          ^^^^^^^