class Fiddle::Closure::BlockCaller

# File ext/fiddle/lib/fiddle/closure.rb, line 60
def initialize ctype, args, abi = Fiddle::Function::DEFAULT, &block
  super(ctype, args, abi)
  @block = block
end

描述¶ ↑

构造一个新的 BlockCaller 对象。

• ctype 是要返回的 C 类型

• args 将传递给回调函数

• abi 是闭包的 abi

如果在准备 ffi_cif 或 ffi_prep_closure 时出现错误，则会引发 RuntimeError。

示例¶ ↑

include Fiddle

cb = Closure::BlockCaller.new(TYPE_INT, [TYPE_INT]) do |one|
  one
end

func = Function.new(cb, [TYPE_INT], TYPE_INT)

# File ext/fiddle/lib/fiddle/closure.rb, line 69
def call *args
  @block.call(*args)
end

使用 args 调用构造的 BlockCaller

有关示例，请参见 Fiddle::Closure::BlockCaller.new