* ext/fiddle/fiddle.c: adding alignment constants for compatibility

  with DL.
* ext/fiddle/fiddle.h: ditto
* ext/fiddle/lib/fiddle/cparser.rb: importing the C parser for DL
  backwards compatibility.
* ext/fiddle/lib/fiddle/import.rb: importing the import DSL for DL
  backwards compatibility.
* ext/fiddle/lib/fiddle/pack.rb: importing structure pack for DL
  backwards compatibility.
* ext/fiddle/lib/fiddle/value.rb: ditto
* ext/fiddle/lib/fiddle/struct.rb: importing struct DSL for DL backwards
  compatibility.
* test/dl/test_c_struct_entry.rb: importing tests
* test/dl/test_c_union_entity.rb: ditto
* test/dl/test_cparser.rb: ditto
* test/dl/test_import.rb: ditto
* test/fiddle/test_c_struct_entry.rb: ditto
* test/fiddle/test_c_union_entity.rb: ditto
* test/fiddle/test_cparser.rb: ditto
* test/fiddle/test_import.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37914 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

4 files changed, 254 insertions, 0 deletions

diff --git a/test/fiddle/test_c_struct_entry.rb b/test/fiddle/test_c_struct_entry.rb
new file mode 100644
index 0000000000..43cf28e493
--- /dev/null
+++ b/test/fiddle/test_c_struct_entry.rb
@@ -0,0 +1,54 @@
+require_relative 'helper'
+
+require 'fiddle/struct'
+
+module Fiddle
+  class TestCStructEntity < TestCase
+    def test_class_size
+      types = [TYPE_DOUBLE, TYPE_CHAR]
+
+      size = CStructEntity.size types
+
+      alignments = types.map { |type| PackInfo::ALIGN_MAP[type] }
+
+      expected = PackInfo.align 0, alignments[0]
+      expected += PackInfo::SIZE_MAP[TYPE_DOUBLE]
+
+      expected = PackInfo.align expected, alignments[1]
+      expected += PackInfo::SIZE_MAP[TYPE_CHAR]
+
+      expected = PackInfo.align expected, alignments.max
+
+      assert_equal expected, size
+    end
+
+    def test_class_size_with_count
+      size = CStructEntity.size([[TYPE_DOUBLE, 2], [TYPE_CHAR, 20]])
+
+      types = [TYPE_DOUBLE, TYPE_CHAR]
+      alignments = types.map { |type| PackInfo::ALIGN_MAP[type] }
+
+      expected = PackInfo.align 0, alignments[0]
+      expected += PackInfo::SIZE_MAP[TYPE_DOUBLE] * 2
+
+      expected = PackInfo.align expected, alignments[1]
+      expected += PackInfo::SIZE_MAP[TYPE_CHAR] * 20
+
+      expected = PackInfo.align expected, alignments.max
+
+      assert_equal expected, size
+    end
+
+    def test_set_ctypes
+      union = CStructEntity.malloc [TYPE_INT, TYPE_LONG]
+      union.assign_names %w[int long]
+
+      # this test is roundabout because the stored ctypes are not accessible
+      union['long'] = 1
+      union['int'] = 2
+
+      assert_equal 1, union['long']
+      assert_equal 2, union['int']
+    end
+  end
+end
diff --git a/test/fiddle/test_c_union_entity.rb b/test/fiddle/test_c_union_entity.rb
new file mode 100644
index 0000000000..d27c9edb52
--- /dev/null
+++ b/test/fiddle/test_c_union_entity.rb
@@ -0,0 +1,31 @@
+require_relative 'helper'
+
+require 'fiddle/struct'
+
+module Fiddle
+  class TestCUnionEntity < TestCase
+    def test_class_size
+      size = CUnionEntity.size([TYPE_DOUBLE, TYPE_CHAR])
+
+      assert_equal SIZEOF_DOUBLE, size
+    end
+
+    def test_class_size_with_count
+      size = CUnionEntity.size([[TYPE_DOUBLE, 2], [TYPE_CHAR, 20]])
+
+      assert_equal SIZEOF_CHAR * 20, size
+    end
+
+    def test_set_ctypes
+      union = CUnionEntity.malloc [TYPE_INT, TYPE_LONG]
+      union.assign_names %w[int long]
+
+      # this test is roundabout because the stored ctypes are not accessible
+      union['long'] = 1
+      assert_equal 1, union['long']
+
+      union['int'] = 1
+      assert_equal 1, union['int']
+    end
+  end
+end
diff --git a/test/fiddle/test_cparser.rb b/test/fiddle/test_cparser.rb
new file mode 100644
index 0000000000..32ef82fc6e
--- /dev/null
+++ b/test/fiddle/test_cparser.rb
@@ -0,0 +1,33 @@
+require_relative 'helper'
+
+require 'fiddle/cparser'
+
+module Fiddle
+  class TestCParser < TestCase
+    include CParser
+
+    def test_uint_ctype
+      assert_equal(-TYPE_INT, parse_ctype('uint'))
+    end
+
+    def test_size_t_ctype
+      assert_equal(TYPE_SIZE_T, parse_ctype("size_t"))
+    end
+
+    def test_ssize_t_ctype
+      assert_equal(TYPE_SSIZE_T, parse_ctype("ssize_t"))
+    end
+
+    def test_ptrdiff_t_ctype
+      assert_equal(TYPE_PTRDIFF_T, parse_ctype("ptrdiff_t"))
+    end
+
+    def test_intptr_t_ctype
+      assert_equal(TYPE_INTPTR_T, parse_ctype("intptr_t"))
+    end
+
+    def test_uintptr_t_ctype
+      assert_equal(TYPE_UINTPTR_T, parse_ctype("uintptr_t"))
+    end
+  end
+end
diff --git a/test/fiddle/test_import.rb b/test/fiddle/test_import.rb
new file mode 100644
index 0000000000..a2e31abf0b
--- /dev/null
+++ b/test/fiddle/test_import.rb
@@ -0,0 +1,136 @@
+# coding: US-ASCII
+require_relative 'helper'
+require 'fiddle/import'
+
+module Fiddle
+  module LIBC
+    extend Importer
+    dlload LIBC_SO, LIBM_SO
+
+    typealias 'string', 'char*'
+    typealias 'FILE*', 'void*'
+
+    extern "void *strcpy(char*, char*)"
+    extern "int isdigit(int)"
+    extern "double atof(string)"
+    extern "unsigned long strtoul(char*, char **, int)"
+    extern "int qsort(void*, unsigned long, unsigned long, void*)"
+    extern "int fprintf(FILE*, char*)"
+    extern "int gettimeofday(timeval*, timezone*)" rescue nil
+
+    BoundQsortCallback = bind("void *bound_qsort_callback(void*, void*)"){|ptr1,ptr2| ptr1[0] <=> ptr2[0]}
+    Timeval = struct [
+      "long tv_sec",
+      "long tv_usec",
+    ]
+    Timezone = struct [
+      "int tz_minuteswest",
+      "int tz_dsttime",
+    ]
+    MyStruct = struct [
+      "short num[5]",
+      "char c",
+      "unsigned char buff[7]",
+    ]
+
+    CallCallback = bind("void call_callback(void*, void*)"){ | ptr1, ptr2|
+      f = Function.new(ptr1.to_i, [TYPE_VOIDP], TYPE_VOID)
+      f.call(ptr2)
+    }
+  end
+
+  class TestImport < TestCase
+    def test_ensure_call_dlload
+      err = assert_raises(RuntimeError) do
+        Class.new do
+          extend Importer
+          extern "void *strcpy(char*, char*)"
+        end
+      end
+      assert_match(/call dlload before/, err.message)
+    end
+
+    def test_malloc()
+      s1 = LIBC::Timeval.malloc()
+      s2 = LIBC::Timeval.malloc()
+      refute_equal(s1.to_ptr.to_i, s2.to_ptr.to_i)
+    end
+
+    def test_sizeof()
+      assert_equal(SIZEOF_VOIDP, LIBC.sizeof("FILE*"))
+      assert_equal(LIBC::MyStruct.size(), LIBC.sizeof(LIBC::MyStruct))
+    end
+
+    def test_unsigned_result()
+      d = (2 ** 31) + 1
+
+      r = LIBC.strtoul(d.to_s, 0, 0)
+      assert_equal(d, r)
+    end
+
+    def test_io()
+      if( RUBY_PLATFORM != BUILD_RUBY_PLATFORM )
+        return
+      end
+      io_in,io_out = IO.pipe()
+      LIBC.fprintf(io_out, "hello")
+      io_out.flush()
+      io_out.close()
+      str = io_in.read()
+      io_in.close()
+      assert_equal("hello", str)
+    end
+
+    def test_value()
+      i = LIBC.value('int', 2)
+      assert_equal(2, i.value)
+
+      d = LIBC.value('double', 2.0)
+      assert_equal(2.0, d.value)
+
+      ary = LIBC.value('int[3]', [0,1,2])
+      assert_equal([0,1,2], ary.value)
+    end
+
+    def test_struct()
+      s = LIBC::MyStruct.malloc()
+      s.num = [0,1,2,3,4]
+      s.c = ?a.ord
+      s.buff = "012345\377"
+      assert_equal([0,1,2,3,4], s.num)
+      assert_equal(?a.ord, s.c)
+      assert_equal([?0.ord,?1.ord,?2.ord,?3.ord,?4.ord,?5.ord,?\377.ord], s.buff)
+    end
+
+    def test_gettimeofday()
+      if( defined?(LIBC.gettimeofday) )
+        timeval = LIBC::Timeval.malloc()
+        timezone = LIBC::Timezone.malloc()
+        LIBC.gettimeofday(timeval, timezone)
+        cur = Time.now()
+        assert(cur.to_i - 2 <= timeval.tv_sec && timeval.tv_sec <= cur.to_i)
+      end
+    end
+
+    def test_strcpy()
+      buff = "000"
+      str = LIBC.strcpy(buff, "123")
+      assert_equal("123", buff)
+      assert_equal("123", str.to_s)
+    end
+
+    def test_isdigit
+      r1 = LIBC.isdigit(?1.ord)
+      r2 = LIBC.isdigit(?2.ord)
+      rr = LIBC.isdigit(?r.ord)
+      assert_operator(r1, :>, 0)
+      assert_operator(r2, :>, 0)
+      assert_equal(0, rr)
+    end
+
+    def test_atof
+      r = LIBC.atof("12.34")
+      assert_includes(12.00..13.00, r)
+    end
+  end
+end