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7f24b0aabd
* ext/fiddle/closure.c: use directly declaration for standalone gem
without internal.h.
* Specify frozen string literal is true.
* Update gemspec configuration for release version.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59854 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
49 lines
1.2 KiB
Ruby
49 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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module Fiddle
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class Closure
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# the C type of the return of the FFI closure
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attr_reader :ctype
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# arguments of the FFI closure
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attr_reader :args
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# Extends Fiddle::Closure to allow for building the closure in a block
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class BlockCaller < Fiddle::Closure
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# == Description
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#
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# Construct a new BlockCaller object.
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#
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# * +ctype+ is the C type to be returned
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# * +args+ are passed the callback
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# * +abi+ is the abi of the closure
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#
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# If there is an error in preparing the +ffi_cif+ or +ffi_prep_closure+,
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# then a RuntimeError will be raised.
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#
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# == Example
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#
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# include Fiddle
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#
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# cb = Closure::BlockCaller.new(TYPE_INT, [TYPE_INT]) do |one|
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# one
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# end
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#
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# func = Function.new(cb, [TYPE_INT], TYPE_INT)
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#
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def initialize ctype, args, abi = Fiddle::Function::DEFAULT, &block
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super(ctype, args, abi)
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@block = block
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end
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# Calls the constructed BlockCaller, with +args+
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#
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# For an example see Fiddle::Closure::BlockCaller.new
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#
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def call *args
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@block.call(*args)
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end
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end
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end
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end
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