Prism::InterpolatedMatchLastLineNode

Class

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
   ^^^^^^^^^^^^^^^^
Attributes

flags

Read

protected attr_reader flags: Integer

parts

Read

attr_reader parts: Array[StringNode | EmbeddedStatementsNode | EmbeddedVariableNode]

Class Methods

new(source, flags, opening_loc, parts, closing_loc, location)
::

def initialize: (Integer flags, Location opening_loc, Array[StringNode | EmbeddedStatementsNode | EmbeddedVariableNode] parts, Location closing_loc, Location location) -> void

type
::

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

Instance Methods

===(other)
#

Implements case-equality for the node. This is effectively == but without comparing the value of locations. Locations are checked only for presence.

accept(visitor)
#

def accept: (Visitor visitor) -> void

ascii_8bit?
#

def ascii_8bit?: () -> bool

child_nodes
#

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

closing
#

def closing: () -> String

closing_loc
#

attr_reader closing_loc: Location

comment_targets
#

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

compact_child_nodes
#

def compact_child_nodes: () -> Array

copy(flags: self.flags, opening_loc: self.opening_loc, parts: self.parts, closing_loc: self.closing_loc, location: self.location)
#

def copy: (?flags: Integer, ?opening_loc: Location, ?parts: Array[StringNode | EmbeddedStatementsNode | EmbeddedVariableNode], ?closing_loc: Location, ?location: Location) -> InterpolatedMatchLastLineNode

deconstruct
#
An alias for child_nodes

deconstruct_keys(keys)
#

def deconstruct_keys: (Array keys) -> { flags: Integer, opening_loc: Location, parts: Array[StringNode | EmbeddedStatementsNode | EmbeddedVariableNode], closing_loc: Location, location: Location }

euc_jp?
#

def euc_jp?: () -> bool

extended?
#

def extended?: () -> bool

forced_binary_encoding?
#

def forced_binary_encoding?: () -> bool

forced_us_ascii_encoding?
#

def forced_us_ascii_encoding?: () -> bool

forced_utf8_encoding?
#

def forced_utf8_encoding?: () -> bool

ignore_case?
#

def ignore_case?: () -> bool

inspect
#

def inspect -> String

multi_line?
#

def multi_line?: () -> bool

once?
#

def once?: () -> bool

opening
#

def opening: () -> String

opening_loc
#

attr_reader opening_loc: Location

type
#

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

utf_8?
#

def utf_8?: () -> bool

windows_31j?
#

def windows_31j?: () -> bool