Possible bug with def obj.foo; end? #1435
Description
The following Ruby code produces an unexpected (to me) AST:
o = Object.new
def o.foo; end...which gives:
irb(main):001:0> YARP.parse('o = Object.new; def o.foo; end')
=>
#<YARP::ParseResult:0x000055cdb0e77d58
@comments=[],
@errors=[],
@source=#<YARP::Source:0x000055cdb0e7cd08 @offsets=[0], @source="o = Object.new; def o.foo; end">,
@value=
ProgramNode(0...30)(
[:o],
StatementsNode(0...30)(
[LocalVariableWriteNode(0...14)(:o, 0, (0...1), CallNode(4...14)(ConstantReadNode(4...10)(:Object), (10...11), (11...14), nil, nil, nil, nil, 0, "new"), (2...3)),
DefNode(16...30)(:foo, (22...25), CallNode(20...21)(nil, nil, (20...21), nil, nil, nil, nil, 2, "o"), nil, nil, [], (16...19), (21...22), nil, nil, nil, (27...30))]
)
),
@warnings=[]>Specifically the receiver of the DefNode, e.g.
irb(main):011:0> node.child_nodes.first.child_nodes[1].receiver
=> CallNode(20...21)(nil, nil, (20...21), nil, nil, nil, nil, 2, "o")Is this a bug? I would expect a LocalVariableReadNode or maybe a LocalVariableTargetNode instead of a CallNode.
This is what Whitequark Parser produces:
irb(main):002:0> Parser::CurrentRuby.parse('o = Object.new; def o.foo; end')
=>
s(:begin,
s(:lvasgn, :o,
s(:send,
s(:const, nil, :Object), :new)),
s(:defs,
s(:lvar, :o), :foo,
s(:args), nil))...vs what it would produce if o wasn't a known local variable:
irb(main):001:0> Parser::CurrentRuby.parse('def o.foo; end')
=>
s(:defs,
s(:send, nil, :o), :foo,
s(:args), nil)