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config.yml
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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: CONTAINS_KEYWORD_SPLAT
comment: "if arguments contain keyword splat"
comment: Flags for arguments nodes.
- name: ArrayNodeFlags
values:
- name: CONTAINS_SPLAT
comment: "if array contains splat nodes"
comment: Flags for array nodes.
- name: CallNodeFlags
values:
- name: SAFE_NAVIGATION
comment: "&. operator"
- name: VARIABLE_CALL
comment: "a call that could have been a local variable"
- name: ATTRIBUTE_WRITE
comment: "a call that is an attribute write, so the value being written should be returned"
- name: IGNORE_VISIBILITY
comment: "a call that ignores method visibility"
comment: Flags for call nodes.
- name: EncodingFlags
values:
- name: FORCED_UTF8_ENCODING
comment: "internal bytes forced the encoding to UTF-8"
- name: FORCED_BINARY_ENCODING
comment: "internal bytes forced the encoding to binary"
comment: Flags for nodes that have unescaped content.
- name: IntegerBaseFlags
values:
- name: BINARY
comment: "0b prefix"
- name: DECIMAL
comment: "0d or no prefix"
- name: OCTAL
comment: "0o or 0 prefix"
- name: HEXADECIMAL
comment: "0x prefix"
comment: Flags for integer nodes that correspond to the base of the integer.
- name: KeywordHashNodeFlags
values:
- name: SYMBOL_KEYS
comment: "a keyword hash which only has `AssocNode` elements all with symbol keys, which means the elements can be treated as keyword arguments"
comment: Flags for keyword hash nodes.
- 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: ParameterFlags
values:
- name: REPEATED_PARAMETER
comment: "a parameter name that has been repeated in the method signature"
comment: Flags for parameter 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"
- name: FORCED_UTF8_ENCODING
comment: "internal bytes forced the encoding to UTF-8"
- name: FORCED_BINARY_ENCODING
comment: "internal bytes forced the encoding to binary"
- name: FORCED_US_ASCII_ENCODING
comment: "internal bytes forced the encoding to US-ASCII"
comment: Flags for regular expression and match last line nodes.
- name: StringFlags
values:
- name: FORCED_UTF8_ENCODING
comment: "internal bytes forced the encoding to UTF-8"
- name: FORCED_BINARY_ENCODING
comment: "internal bytes forced the encoding to binary"
- name: FROZEN
comment: "frozen by virtue of a `frozen_string_literal` comment"
comment: Flags for string nodes.
- name: SymbolFlags
values:
- name: FORCED_UTF8_ENCODING
comment: "internal bytes forced the encoding to UTF-8"
- name: FORCED_BINARY_ENCODING
comment: "internal bytes forced the encoding to binary"
- name: FORCED_US_ASCII_ENCODING
comment: "internal bytes forced the encoding to US-ASCII"
comment: Flags for symbol 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
comment: |
Represents the left side of the expression. It can be any [non-void expression](https://github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).
left and right
^^^^
1 && 2
^
- name: right
type: node
comment: |
Represents the right side of the expression. It can be any [non-void expression](https://github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).
left && right
^^^^^
1 and 2
^
- name: operator_loc
type: location
comment: |
The location of the `and` keyword or the `&&` operator.
left and right
^^^
comment: |
Represents the use of the `&&` operator or the `and` keyword.
left and right
^^^^^^^^^^^^^^
- name: ArgumentsNode
fields:
- name: flags
type: flags
kind: ArgumentsNodeFlags
- name: arguments
type: node[]
comment: |
Represents a set of arguments to a method or a keyword.
return foo, bar, baz
^^^^^^^^^^^^^
- name: ArrayNode
fields:
- name: flags
type: flags
kind: ArrayNodeFlags
- 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
comment: |
The key of the association. This can be any [non-void expression](https://github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).
{ a: b }
^
{ foo => bar }
^^^
{ def a; end => 1 }
^^^^^^^^^^
- name: value
type: node
comment: |
The value of the association, if present. This can be any [non-void expression](https://github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).
{ foo => bar }
^^^
{ x: 1 }
^
- name: operator_loc
type: location?
comment: |
The location of the `=>` operator, if present.
{ foo => bar }
^^
comment: |
Represents a hash key/value pair.
{ a => b }
^^^^^^
- name: AssocSplatNode
fields:
- name: value
type: node?
comment: |
The value to be splatted, if present. Will be missing when keyword rest argument forwarding is used.
{ **foo }
^^^
- name: operator_loc
type: location
comment: |
The location of the `**` operator.
{ **x }
^^
comment: |
Represents a splat in a hash literal.
{ **foo }
^^^^^
- name: BackReferenceReadNode
fields:
- name: name
type: constant
comment: |
The name of the back-reference variable, including the leading `$`.
$& # name `:$&`
$+ # name `:$+`
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: flags
type: flags
kind: ParameterFlags
- name: name
type: constant
comment: |
Represents a block local variable.
a { |; b| }
^
- name: BlockNode
fields:
- name: locals
type: constant[]
- name: parameters
type: node?
- 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: flags
type: flags
kind: ParameterFlags
- 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: flags
type: flags
kind: CallNodeFlags
- name: receiver
type: node?
- name: call_operator_loc
type: location?
- name: message_loc
type: location?
- 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: flags
type: flags
kind: CallNodeFlags
- name: receiver
type: node?
comment: |
The object that the method is being called on. This can be either `nil` or any [non-void expression](https://github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).
foo.bar
^^^
+foo
^^^
foo + bar
^^^
- name: call_operator_loc
type: location?
- name: name
type: constant
- 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?
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: flags
type: flags
kind: CallNodeFlags
- name: receiver
type: node?
- name: call_operator_loc
type: location?
- name: message_loc
type: location?
- 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: flags
type: flags
kind: CallNodeFlags
- name: receiver
type: node?
- name: call_operator_loc
type: location?
- name: message_loc
type: location?
- 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: CallTargetNode
fields:
- name: flags
type: flags
kind: CallNodeFlags
- name: receiver
type: node
- name: call_operator_loc
type: location
- name: name
type: constant
- name: message_loc
type: location
comment: |
Represents assigning to a method call.
foo.bar, = 1
^^^^^^^
begin
rescue => foo.bar
^^^^^^^
end
for foo.bar in baz do end
^^^^^^^
- 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: CaseMatchNode
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 for pattern matching.
case true
in false
end
^^^^^^^^^
- 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: