class Prism::RegularExpressionNode

Represents a regular expression literal with no interpolation.

/foo/i
^^^^^^

Attributes

flags[R]

private attr_reader flags: Integer

unescaped[R]

attr_reader unescaped: String

Public Class Methods

new(source, flags, opening_loc, content_loc, closing_loc, unescaped, location) click to toggle source

def initialize: (Integer flags, Location opening_loc, Location content_loc, Location closing_loc, String unescaped, Location location) -> void

# File lib/prism/node.rb, line 15434
def initialize(source, flags, opening_loc, content_loc, closing_loc, unescaped, location)
  @source = source
  @newline = false
  @location = location
  @flags = flags
  @opening_loc = opening_loc
  @content_loc = content_loc
  @closing_loc = closing_loc
  @unescaped = unescaped
end
type() click to toggle source

Similar to type, this method returns a symbol that you can use for splitting on the type of the node without having to do a long === chain. Note that like type, it will still be slower than using == for a single class, but should be faster in a case statement or an array comparison.

def self.type: () -> Symbol

# File lib/prism/node.rb, line 15613
def self.type
  :regular_expression_node
end

Public Instance Methods

accept(visitor) click to toggle source

def accept: (Visitor visitor) -> void

# File lib/prism/node.rb, line 15446
def accept(visitor)
  visitor.visit_regular_expression_node(self)
end
ascii_8bit?() click to toggle source

def ascii_8bit?: () -> bool

# File lib/prism/node.rb, line 15533
def ascii_8bit?
  flags.anybits?(RegularExpressionFlags::ASCII_8BIT)
end
child_nodes() click to toggle source

def child_nodes: () -> Array[nil | Node]

# File lib/prism/node.rb, line 15451
def child_nodes
  []
end
Also aliased as: deconstruct
closing() click to toggle source

def closing: () -> String

# File lib/prism/node.rb, line 15573
def closing
  closing_loc.slice
end
closing_loc() click to toggle source

attr_reader closing_loc: Location

# File lib/prism/node.rb, line 15497
def closing_loc
  location = @closing_loc
  return location if location.is_a?(Location)
  @closing_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end
comment_targets() click to toggle source

def comment_targets: () -> Array[Node | Location]

# File lib/prism/node.rb, line 15461
def comment_targets
  [opening_loc, content_loc, closing_loc] #: Array[Prism::node | Location]
end
compact_child_nodes() click to toggle source

def compact_child_nodes: () -> Array

# File lib/prism/node.rb, line 15456
def compact_child_nodes
  []
end
content() click to toggle source

def content: () -> String

# File lib/prism/node.rb, line 15568
def content
  content_loc.slice
end
content_loc() click to toggle source

attr_reader content_loc: Location

# File lib/prism/node.rb, line 15490
def content_loc
  location = @content_loc
  return location if location.is_a?(Location)
  @content_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end
copy(flags: self.flags, opening_loc: self.opening_loc, content_loc: self.content_loc, closing_loc: self.closing_loc, unescaped: self.unescaped, location: self.location) click to toggle source

def copy: (?flags: Integer, ?opening_loc: Location, ?content_loc: Location, ?closing_loc: Location, ?unescaped: String, ?location: Location) -> RegularExpressionNode

# File lib/prism/node.rb, line 15466
def copy(flags: self.flags, opening_loc: self.opening_loc, content_loc: self.content_loc, closing_loc: self.closing_loc, unescaped: self.unescaped, location: self.location)
  RegularExpressionNode.new(source, flags, opening_loc, content_loc, closing_loc, unescaped, location)
end
deconstruct()

def deconstruct: () -> Array[nil | Node]

Alias for: child_nodes
deconstruct_keys(keys) click to toggle source

def deconstruct_keys: (Array keys) -> { flags: Integer, opening_loc: Location, content_loc: Location, closing_loc: Location, unescaped: String, location: Location }

# File lib/prism/node.rb, line 15474
def deconstruct_keys(keys)
  { flags: flags, opening_loc: opening_loc, content_loc: content_loc, closing_loc: closing_loc, unescaped: unescaped, location: location }
end
euc_jp?() click to toggle source

def euc_jp?: () -> bool

# File lib/prism/node.rb, line 15528
def euc_jp?
  flags.anybits?(RegularExpressionFlags::EUC_JP)
end
extended?() click to toggle source

def extended?: () -> bool

# File lib/prism/node.rb, line 15513
def extended?
  flags.anybits?(RegularExpressionFlags::EXTENDED)
end
forced_binary_encoding?() click to toggle source

def forced_binary_encoding?: () -> bool

# File lib/prism/node.rb, line 15553
def forced_binary_encoding?
  flags.anybits?(RegularExpressionFlags::FORCED_BINARY_ENCODING)
end
forced_us_ascii_encoding?() click to toggle source

def forced_us_ascii_encoding?: () -> bool

# File lib/prism/node.rb, line 15558
def forced_us_ascii_encoding?
  flags.anybits?(RegularExpressionFlags::FORCED_US_ASCII_ENCODING)
end
forced_utf8_encoding?() click to toggle source

def forced_utf8_encoding?: () -> bool

# File lib/prism/node.rb, line 15548
def forced_utf8_encoding?
  flags.anybits?(RegularExpressionFlags::FORCED_UTF8_ENCODING)
end
ignore_case?() click to toggle source

def ignore_case?: () -> bool

# File lib/prism/node.rb, line 15508
def ignore_case?
  flags.anybits?(RegularExpressionFlags::IGNORE_CASE)
end
inspect(inspector = NodeInspector.new) click to toggle source

def inspect(NodeInspector inspector) -> String

# File lib/prism/node.rb, line 15578
def inspect(inspector = NodeInspector.new)
  inspector << inspector.header(self)
  flags = [("ignore_case" if ignore_case?), ("extended" if extended?), ("multi_line" if multi_line?), ("once" if once?), ("euc_jp" if euc_jp?), ("ascii_8bit" if ascii_8bit?), ("windows_31j" if windows_31j?), ("utf_8" if utf_8?), ("forced_utf8_encoding" if forced_utf8_encoding?), ("forced_binary_encoding" if forced_binary_encoding?), ("forced_us_ascii_encoding" if forced_us_ascii_encoding?)].compact
  inspector << "├── flags: #{flags.empty? ? "∅" : flags.join(", ")}\n"
  inspector << "├── opening_loc: #{inspector.location(opening_loc)}\n"
  inspector << "├── content_loc: #{inspector.location(content_loc)}\n"
  inspector << "├── closing_loc: #{inspector.location(closing_loc)}\n"
  inspector << "└── unescaped: #{unescaped.inspect}\n"
  inspector.to_str
end
multi_line?() click to toggle source

def multi_line?: () -> bool

# File lib/prism/node.rb, line 15518
def multi_line?
  flags.anybits?(RegularExpressionFlags::MULTI_LINE)
end
once?() click to toggle source

def once?: () -> bool

# File lib/prism/node.rb, line 15523
def once?
  flags.anybits?(RegularExpressionFlags::ONCE)
end
opening() click to toggle source

def opening: () -> String

# File lib/prism/node.rb, line 15563
def opening
  opening_loc.slice
end
opening_loc() click to toggle source

attr_reader opening_loc: Location

# File lib/prism/node.rb, line 15483
def opening_loc
  location = @opening_loc
  return location if location.is_a?(Location)
  @opening_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end
type() click to toggle source

Sometimes you want to check an instance of a node against a list of classes to see what kind of behavior to perform. Usually this is done by calling ‘[cls1, cls2].include?(node.class)` or putting the node into a case statement and doing `case node; when cls1; when cls2; end`. Both of these approaches are relatively slow because of the constant lookups, method calls, and/or array allocations.

Instead, you can call type, which will return to you a symbol that you can use for comparison. This is faster than the other approaches because it uses a single integer comparison, but also because if you’re on CRuby you can take advantage of the fact that case statements with all symbol keys will use a jump table.

def type: () -> Symbol

# File lib/prism/node.rb, line 15603
def type
  :regular_expression_node
end
utf_8?() click to toggle source

def utf_8?: () -> bool

# File lib/prism/node.rb, line 15543
def utf_8?
  flags.anybits?(RegularExpressionFlags::UTF_8)
end
windows_31j?() click to toggle source

def windows_31j?: () -> bool

# File lib/prism/node.rb, line 15538
def windows_31j?
  flags.anybits?(RegularExpressionFlags::WINDOWS_31J)
end