class SyntaxTree::Parser

def on_opassign(target, operator, value)

) -> OpAssign
untyped value
Op operator,
) target,
VarField
TopConstField |
Field |
ConstPathField |
ARefField |
(
on_opassign: (
:call-seq: 
def on_opassign(target, operator, value)
  OpAssign.new(
    target: target,
    operator: operator,
    value: value,
    location: target.location.to(value.location)
  )
end