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#
# This file is part of ruby-ffi.
# For licensing, see LICENSE.SPECS
#
require File.expand_path(File.join(File.dirname(__FILE__), "spec_helper"))
describe "Custom type definitions" do
it "attach_function with custom typedef" do
module CustomTypedef
extend FFI::Library
ffi_lib TestLibrary::PATH
typedef :uint, :fubar_t
attach_function :ret_u32, [ :fubar_t ], :fubar_t
end
expect(CustomTypedef.ret_u32(0x12345678)).to eq(0x12345678)
end
it "variadic invoker with custom typedef" do
module VariadicCustomTypedef
extend FFI::Library
ffi_lib TestLibrary::PATH
typedef :uint, :fubar_t
attach_function :pack_varargs, [ :buffer_out, :string, :varargs ], :void
end
buf = FFI::Buffer.new :uint, 10
VariadicCustomTypedef.pack_varargs(buf, "i", :fubar_t, 0x12345678)
expect(buf.get_int64(0)).to eq(0x12345678)
end
it "Callback with custom typedef parameter" do
module CallbackCustomTypedef
extend FFI::Library
ffi_lib TestLibrary::PATH
typedef :uint, :fubar3_t
callback :cbIrV, [ :fubar3_t ], :void
attach_function :testCallbackU32rV, :testClosureIrV, [ :cbIrV, :fubar3_t ], :void
end
i = 0
CallbackCustomTypedef.testCallbackU32rV(0xdeadbeef) { |v| i = v }
expect(i).to eq(0xdeadbeef)
end
module StructCustomTypedef
extend FFI::Library
ffi_lib TestLibrary::PATH
typedef :uint, :fubar3_t
class S < FFI::Struct
layout :a, :fubar3_t
end
end
it "Struct with custom typedef field" do
s = StructCustomTypedef::S.new
s[:a] = 0x12345678
expect(s.pointer.get_uint(0)).to eq(0x12345678)
end
it "attach_function after a typedef should not reject normal types" do
expect do
Module.new do
extend FFI::Library
# enum() will insert a custom typedef called :foo for the enum
enum :foo, [ :a, :b ]
typedef :int, :bar
ffi_lib TestLibrary::PATH
begin
attach_function :ptr_ret_int32_t, [ :string, :foo ], :bar
rescue FFI::NotFoundError
# NetBSD uses #define instead of typedef for these
attach_function :ptr_ret_int32_t, :ptr_ret___int32_t, [ :string, :foo ], :bar
end
end
end.not_to raise_error
end
it "detects the correct type for size_t" do
expect do
Module.new do
extend FFI::Library
ffi_lib "c"
if FFI::Platform.windows?
# _read() is a function of msvcrt.dll
attach_function :_read, [:int, :pointer, :uint], :int
else
# read(2) is a standard UNIX function
attach_function :read, [:int, :pointer, :size_t], :ssize_t
end
end
end.not_to raise_error
end
end
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