Add bin and edit workflow

bin/gems/ffi-1.17.1-x86_64-linux-gnu/lib/ffi/struct_by_reference.rb

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+#
+# Copyright (C) 2010 Wayne Meissner
+#
+# This file is part of ruby-ffi.
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright notice
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+# * Neither the name of the Ruby FFI project nor the names of its contributors
+#   may be used to endorse or promote products derived from this software
+#   without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.#
+
+module FFI
+  # This class includes the {FFI::DataConverter} module.
+  class StructByReference
+    include DataConverter
+
+    attr_reader :struct_class
+
+    # @param [Struct] struct_class
+    def initialize(struct_class)
+      unless Class === struct_class and struct_class < FFI::Struct
+        raise TypeError, 'wrong type (expected subclass of FFI::Struct)'
+      end
+      @struct_class = struct_class
+    end
+
+    # Always get {FFI::Type}::POINTER.
+    def native_type
+      FFI::Type::POINTER
+    end
+
+    # @param [nil, Struct] value
+    # @param [nil] ctx
+    # @return [AbstractMemory] Pointer on +value+.
+    def to_native(value, ctx)
+      return Pointer::NULL if value.nil?
+
+      unless @struct_class === value
+        raise TypeError, "wrong argument type #{value.class} (expected #{@struct_class})"
+      end
+
+      value.pointer
+    end
+
+    # @param [AbstractMemory] value
+    # @param [nil] ctx
+    # @return [Struct]
+    # Create a struct from content of memory +value+.
+    def from_native(value, ctx)
+      @struct_class.new(value)
+    end
+  end
+end