Class: FFI::VariadicInvoker

### Home Classes Methods

### In Files

- lib/ffi/variadic.rb

### Parent

Object

### Methods

- #attach
- #call
- #init

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- FFI::VariadicInvoker

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# FFI::VariadicInvoker

### Public Instance Methods

attach(mod, mname) click to toggle source

Attach the invoker to module `mod` as `mname`

    # File lib/ffi/variadic.rb, line 62
    def attach(mod, mname)
      invoker = self
      params = "*args"
      call = "call"
      mod.module_eval       @@#{mname} = invoker      def self.#{mname}(#{params})        @@#{mname}.#{call}(#{params})      end      def #{mname}(#{params})        @@#{mname}.#{call}(#{params})      end
      invoker
    end

call(*args, &block) click to toggle source

    # File lib/ffi/variadic.rb, line 44
    def call(*args, &block)
      param_types = Array.new(@fixed)
      param_values = Array.new
      @fixed.each_with_index do |t, i|
        param_values << args[i]
      end
      i = @fixed.length
      while i < args.length
        param_types << FFI.find_type(args[i], @type_map)
        param_values << args[i + 1]
        i += 2
      end
      invoke(param_types, param_values, &block)
    end

init(arg_types, type_map) click to toggle source

    # File lib/ffi/variadic.rb, line 35
    def init(arg_types, type_map)
      @fixed = Array.new
      @type_map = type_map
      arg_types.each_with_index do |type, i|
        @fixed << type unless type == Type::VARARGS
      end
    end

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