class Prism::ForNode
^^^^^^^^^^^^^^
for i in a end
Represents the use of the ‘for` keyword.
def accept(visitor)
def accept(visitor) visitor.visit_for_node(self) end
def child_nodes
def child_nodes [index, collection, statements] end
def comment_targets
def comment_targets [index, collection, *statements, for_keyword_loc, in_keyword_loc, *do_keyword_loc, end_keyword_loc] end
def compact_child_nodes
def compact_child_nodes compact = [] compact << index compact << collection compact << statements if statements compact end
def copy(**params)
def copy(**params) ForNode.new( params.fetch(:index) { index }, params.fetch(:collection) { collection }, params.fetch(:statements) { statements }, params.fetch(:for_keyword_loc) { for_keyword_loc }, params.fetch(:in_keyword_loc) { in_keyword_loc }, params.fetch(:do_keyword_loc) { do_keyword_loc }, params.fetch(:end_keyword_loc) { end_keyword_loc }, params.fetch(:location) { location }, ) end
def deconstruct_keys(keys)
def deconstruct_keys(keys) { index: index, collection: collection, statements: statements, for_keyword_loc: for_keyword_loc, in_keyword_loc: in_keyword_loc, do_keyword_loc: do_keyword_loc, end_keyword_loc: end_keyword_loc, location: location } end
def do_keyword
def do_keyword do_keyword_loc&.slice end
def end_keyword
def end_keyword end_keyword_loc.slice end
def for_keyword
def for_keyword for_keyword_loc.slice end
def in_keyword
def in_keyword in_keyword_loc.slice end
def initialize(index, collection, statements, for_keyword_loc, in_keyword_loc, do_keyword_loc, end_keyword_loc, location)
def initialize(index, collection, statements, for_keyword_loc, in_keyword_loc, do_keyword_loc, end_keyword_loc, location) @index = index @collection = collection @statements = statements @for_keyword_loc = for_keyword_loc @in_keyword_loc = in_keyword_loc @do_keyword_loc = do_keyword_loc @end_keyword_loc = end_keyword_loc @location = location end
def inspect(inspector = NodeInspector.new)
def inspect(inspector = NodeInspector.new) inspector << inspector.header(self) inspector << "├── index:\n" inspector << inspector.child_node(index, "│ ") inspector << "├── collection:\n" inspector << inspector.child_node(collection, "│ ") if (statements = self.statements).nil? inspector << "├── statements: ∅\n" else inspector << "├── statements:\n" inspector << statements.inspect(inspector.child_inspector("│ ")).delete_prefix(inspector.prefix) end inspector << "├── for_keyword_loc: #{inspector.location(for_keyword_loc)}\n" inspector << "├── in_keyword_loc: #{inspector.location(in_keyword_loc)}\n" inspector << "├── do_keyword_loc: #{inspector.location(do_keyword_loc)}\n" inspector << "└── end_keyword_loc: #{inspector.location(end_keyword_loc)}\n" inspector.to_str end
def type
keys will use a jump table.
you can take advantage of the fact that case statements with all symbol
it uses a single integer comparison, but also because if you're on CRuby
can use for comparison. This is faster than the other approaches because
Instead, you can call #type, which will return to you a symbol that you
method calls, and/or array allocations.
these approaches are relatively slow because of the constant lookups,
case statement and doing `case node; when cls1; when cls2; end`. Both of
calling `[cls1, cls2].include?(node.class)` or putting the node into a
classes to see what kind of behavior to perform. Usually this is done by
Sometimes you want to check an instance of a node against a list of
def type :for_node end