class Prism::EmbeddedStatementsNode
Represents an interpolated set of statements.
"foo #{bar}" ^^^^^^
Attributes
attr_reader statements: StatementsNode
?
Public Class Methods
def initialize: (Location
opening_loc
, StatementsNode
? statements, Location
closing_loc
, Location
location) -> void
# File lib/prism/node.rb, line 6201 def initialize(source, opening_loc, statements, closing_loc, location) @source = source @newline = false @location = location @opening_loc = opening_loc @statements = statements @closing_loc = closing_loc end
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 6311 def self.type :embedded_statements_node end
Public Instance Methods
def accept: (Visitor
visitor) -> void
# File lib/prism/node.rb, line 6211 def accept(visitor) visitor.visit_embedded_statements_node(self) end
def child_nodes
: () -> Array[nil | Node]
# File lib/prism/node.rb, line 6216 def child_nodes [statements] end
def closing: () -> String
# File lib/prism/node.rb, line 6269 def closing closing_loc.slice end
attr_reader closing_loc
: Location
# File lib/prism/node.rb, line 6256 def closing_loc location = @closing_loc return location if location.is_a?(Location) @closing_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
def comment_targets
: () -> Array[Node | Location]
# File lib/prism/node.rb, line 6228 def comment_targets [opening_loc, *statements, closing_loc] #: Array[Prism::node | Location] end
def compact_child_nodes
: () -> Array
# File lib/prism/node.rb, line 6221 def compact_child_nodes compact = [] #: Array[Prism::node] compact << statements if statements compact end
def copy: (?opening_loc: Location
, ?statements: StatementsNode
?, ?closing_loc: Location
, ?location: Location
) -> EmbeddedStatementsNode
# File lib/prism/node.rb, line 6233 def copy(opening_loc: self.opening_loc, statements: self.statements, closing_loc: self.closing_loc, location: self.location) EmbeddedStatementsNode.new(source, opening_loc, statements, closing_loc, location) end
def deconstruct_keys
: (Array keys) -> { opening_loc
: Location
, statements: StatementsNode
?, closing_loc
: Location
, location: Location
}
# File lib/prism/node.rb, line 6241 def deconstruct_keys(keys) { opening_loc: opening_loc, statements: statements, closing_loc: closing_loc, location: location } end
def inspect(NodeInspector inspector) -> String
# File lib/prism/node.rb, line 6274 def inspect(inspector = NodeInspector.new) inspector << inspector.header(self) inspector << "├── opening_loc: #{inspector.location(opening_loc)}\n" if (statements = self.statements).nil? inspector << "├── statements: ∅\n" else inspector << "├── statements:\n" inspector << statements.inspect(inspector.child_inspector("│ ")).delete_prefix(inspector.prefix) end inspector << "└── closing_loc: #{inspector.location(closing_loc)}\n" inspector.to_str end
def opening: () -> String
# File lib/prism/node.rb, line 6264 def opening opening_loc.slice end
attr_reader opening_loc
: Location
# File lib/prism/node.rb, line 6246 def opening_loc location = @opening_loc return location if location.is_a?(Location) @opening_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
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 6301 def type :embedded_statements_node end