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
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
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 ^^^^^^^^^^^^
Public Class Methods
Source
# File lib/prism/node.rb, line 8189 def initialize(source, node_id, location, flags, if_keyword_loc, predicate, then_keyword_loc, statements, subsequent, 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 @subsequent = subsequent @end_keyword_loc = end_keyword_loc end
Initialize a new IfNode
node.
Source
# File lib/prism/node.rb, line 8377 def self.type :if_node end
Return a symbol representation of this node type. See Node::type
.
Public Instance Methods
Source
# File lib/prism/node.rb, line 8383 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) && (subsequent === other.subsequent) && (end_keyword_loc.nil? == other.end_keyword_loc.nil?) end
Implements case-equality for the node. This is effectively == but without comparing the value of locations. Locations are checked only for presence.
Source
# File lib/prism/node.rb, line 8203 def accept(visitor) visitor.visit_if_node(self) end
def accept: (Visitor
visitor) -> void
Source
# File lib/prism/node.rb, line 8208 def child_nodes [predicate, statements, subsequent] end
def child_nodes
: () -> Array[nil | Node]
Source
# File lib/prism/node.rb, line 8222 def comment_targets [*if_keyword_loc, predicate, *then_keyword_loc, *statements, *subsequent, *end_keyword_loc] #: Array[Prism::node | Location] end
def comment_targets
: () -> Array[Node | Location]
Source
# File lib/prism/node.rb, line 8213 def compact_child_nodes compact = [] #: Array[Prism::node] compact << predicate compact << statements if statements compact << subsequent if subsequent compact end
def compact_child_nodes
: () -> Array
Source
# File lib/prism/node_ext.rb, line 485 def consequent deprecated("subsequent") subsequent end
Returns the subsequent if/elsif/else clause of the if node. This method is deprecated in favor of subsequent
.
Source
# File lib/prism/node.rb, line 8227 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, subsequent: self.subsequent, end_keyword_loc: self.end_keyword_loc) IfNode.new(source, node_id, location, flags, if_keyword_loc, predicate, then_keyword_loc, statements, subsequent, end_keyword_loc) end
def copy: (?node_id: Integer, ?location: Location
, ?flags: Integer, ?if_keyword_loc: Location
?, ?predicate: Prism::node, ?then_keyword_loc: Location
?, ?statements: StatementsNode
?, ?subsequent: ElseNode
| IfNode
| nil, ?end_keyword_loc: Location
?) -> IfNode
Source
# File lib/prism/node.rb, line 8235 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, subsequent: subsequent, end_keyword_loc: 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
?, subsequent: ElseNode
| IfNode
| nil, end_keyword_loc
: Location
? }
Source
# File lib/prism/node.rb, line 8362 def end_keyword end_keyword_loc&.slice end
def end_keyword
: () -> String?
Source
# File lib/prism/node.rb, line 8333 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
The location of the end
keyword if present, nil
otherwise.
if foo bar end ^^^
Source
# File lib/prism/node.rb, line 8352 def if_keyword if_keyword_loc&.slice end
def if_keyword
: () -> String?
Source
# File lib/prism/node.rb, line 8245 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
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.
Source
# File lib/prism/node.rb, line 8367 def inspect InspectVisitor.compose(self) end
def inspect -> String
Source
# File lib/prism/node.rb, line 8347 def save_end_keyword_loc(repository) repository.enter(node_id, :end_keyword_loc) unless @end_keyword_loc.nil? end
Save the end_keyword_loc
location using the given saved source so that it can be retrieved later.
Source
# File lib/prism/node.rb, line 8259 def save_if_keyword_loc(repository) repository.enter(node_id, :if_keyword_loc) unless @if_keyword_loc.nil? end
Save the if_keyword_loc
location using the given saved source so that it can be retrieved later.
Source
# File lib/prism/node.rb, line 8298 def save_then_keyword_loc(repository) repository.enter(node_id, :then_keyword_loc) unless @then_keyword_loc.nil? end
Save the then_keyword_loc
location using the given saved source so that it can be retrieved later.
Source
# File lib/prism/node.rb, line 8357 def then_keyword then_keyword_loc&.slice end
def then_keyword
: () -> String?
Source
# File lib/prism/node.rb, line 8284 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
The location of the then
keyword (if present) or the ?
in a ternary expression, nil
otherwise.
if foo then bar end ^^^^ a ? b : c ^
Source
# File lib/prism/node.rb, line 8372 def type :if_node end
Return a symbol representation of this node type. See Node#type
.