20 lines
613 B
Ruby
20 lines
613 B
Ruby
module Virtual
|
|
|
|
class EnterImplementation
|
|
def run block
|
|
block.codes.dup.each do |code|
|
|
next unless code.is_a? Virtual::MethodEnter
|
|
new_codes = []
|
|
# save return register to the message at instance return_address
|
|
new_codes << Register.save_return(:message , :return_address)
|
|
# and create a new frame if needed
|
|
unless code.method.locals.empty? and code.method.tmps.empty?
|
|
new_codes << Virtual::NewFrame.new
|
|
end
|
|
block.replace(code , new_codes )
|
|
end
|
|
end
|
|
end
|
|
Virtual.machine.add_pass "Virtual::EnterImplementation"
|
|
end
|