class Prism::IfNode
Represents the use of the ‘if` keyword, either in the block form or the modifier form, or a ternary expression.
bar if foo ^^^^^^^^^^ if foo then bar end ^^^^^^^^^^^^^^^^^^^ foo ? bar : baz ^^^^^^^^^^^^^^^
Attributes
Represents an ‘ElseNode` or an `IfNode` when there is an `else` or an `elsif` in the `if` statement.
if foo bar elsif baz ^^^^^^^^^ qux ^^^ end ^^^ if foo then bar else baz end ^^^^^^^^^^^^
The node for the condition the ‘IfNode` is testing.
if foo ^^^ bar end bar if foo ^^^ foo ? bar : baz ^^^
Represents the body of statements that will be executed when the predicate is evaluated as truthy. Will be ‘nil` when no body is provided.
if foo bar ^^^ baz ^^^ end
Public Class Methods
Initialize a new IfNode
node.
# File lib/prism/node.rb, line 7306 def initialize(source, node_id, location, flags, if_keyword_loc, predicate, then_keyword_loc, statements, consequent, end_keyword_loc) @source = source @node_id = node_id @location = location @flags = flags @if_keyword_loc = if_keyword_loc @predicate = predicate @then_keyword_loc = then_keyword_loc @statements = statements @consequent = consequent @end_keyword_loc = end_keyword_loc end
Return a symbol representation of this node type. See ‘Node::type`.
# File lib/prism/node.rb, line 7473 def self.type :if_node end
Public Instance Methods
Implements case-equality for the node. This is effectively == but without comparing the value of locations. Locations are checked only for presence.
# File lib/prism/node.rb, line 7479 def ===(other) other.is_a?(IfNode) && (if_keyword_loc.nil? == other.if_keyword_loc.nil?) && (predicate === other.predicate) && (then_keyword_loc.nil? == other.then_keyword_loc.nil?) && (statements === other.statements) && (consequent === other.consequent) && (end_keyword_loc.nil? == other.end_keyword_loc.nil?) end
def accept: (Visitor
visitor) -> void
# File lib/prism/node.rb, line 7320 def accept(visitor) visitor.visit_if_node(self) end
def child_nodes
: () -> Array[nil | Node]
# File lib/prism/node.rb, line 7325 def child_nodes [predicate, statements, consequent] end
def comment_targets
: () -> Array[Node | Location]
# File lib/prism/node.rb, line 7339 def comment_targets [*if_keyword_loc, predicate, *then_keyword_loc, *statements, *consequent, *end_keyword_loc] #: Array[Prism::node | Location] end
def compact_child_nodes
: () -> Array
# File lib/prism/node.rb, line 7330 def compact_child_nodes compact = [] #: Array[Prism::node] compact << predicate compact << statements if statements compact << consequent if consequent compact end
def copy: (?node_id: Integer
, ?location: Location
, ?flags: Integer
, ?if_keyword_loc: Location
?, ?predicate: Prism::node, ?then_keyword_loc: Location
?, ?statements: StatementsNode
?, ?consequent: Prism::node?, ?end_keyword_loc: Location
?) -> IfNode
# File lib/prism/node.rb, line 7344 def copy(node_id: self.node_id, location: self.location, flags: self.flags, if_keyword_loc: self.if_keyword_loc, predicate: self.predicate, then_keyword_loc: self.then_keyword_loc, statements: self.statements, consequent: self.consequent, end_keyword_loc: self.end_keyword_loc) IfNode.new(source, node_id, location, flags, if_keyword_loc, predicate, then_keyword_loc, statements, consequent, end_keyword_loc) end
def deconstruct_keys
: (Array keys) -> { node_id: Integer
, location: Location
, if_keyword_loc
: Location
?, predicate: Prism::node, then_keyword_loc
: Location
?, statements: StatementsNode
?, consequent: Prism::node?, end_keyword_loc
: Location
? }
# File lib/prism/node.rb, line 7352 def deconstruct_keys(keys) { node_id: node_id, location: location, if_keyword_loc: if_keyword_loc, predicate: predicate, then_keyword_loc: then_keyword_loc, statements: statements, consequent: consequent, end_keyword_loc: end_keyword_loc } end
def end_keyword
: () -> String
?
# File lib/prism/node.rb, line 7458 def end_keyword end_keyword_loc&.slice end
The location of the ‘end` keyword if present, `nil` otherwise.
if foo bar end ^^^
# File lib/prism/node.rb, line 7435 def end_keyword_loc location = @end_keyword_loc case location when nil nil when Location location else @end_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end end
def if_keyword
: () -> String
?
# File lib/prism/node.rb, line 7448 def if_keyword if_keyword_loc&.slice end
The location of the ‘if` keyword if present.
bar if foo ^^
The ‘if_keyword_loc` field will be `nil` when the `IfNode` represents a ternary expression.
# File lib/prism/node.rb, line 7362 def if_keyword_loc location = @if_keyword_loc case location when nil nil when Location location else @if_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end end
def inspect -> String
# File lib/prism/node.rb, line 7463 def inspect InspectVisitor.compose(self) end
def then_keyword
: () -> String
?
# File lib/prism/node.rb, line 7453 def then_keyword then_keyword_loc&.slice end
The location of the ‘then` keyword (if present) or the `?` in a ternary expression, `nil` otherwise.
if foo then bar end ^^^^ a ? b : c ^
# File lib/prism/node.rb, line 7394 def then_keyword_loc location = @then_keyword_loc case location when nil nil when Location location else @then_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end end
Return a symbol representation of this node type. See ‘Node#type`.
# File lib/prism/node.rb, line 7468 def type :if_node end