Property definitions

nitc $ AReassignFormExpr :: defaultinit
# Whatever is a combined assignment. eg `+= something`
abstract class AReassignFormExpr
	super AExpr

	# The combined operator (eg. `+=`)
	var n_assign_op: AAssignOp is writable, noinit

	# The right-value to apply on the combined operator.
	var n_value: AExpr is writable, noinit
end
src/parser/parser_nodes.nit:2117,1--2126,3