required keyword arguments

* compile.c (iseq_set_arguments, iseq_compile_each): support required
  keyword arguments.   [ruby-core:51454] [Feature #7701]
* iseq.c (rb_iseq_parameters): ditto.
* parse.y (f_kw, f_block_kw): ditto.  this syntax is still
  experimental, the notation may change.
* vm_core.h (rb_iseq_struct): ditto.
* vm_insnhelper.c (vm_callee_setup_keyword_arg): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39735 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 21 insertions, 0 deletions

diff --git a/test/ruby/test_keyword.rb b/test/ruby/test_keyword.rb
index 45ecc6a95e..b7b4301ca1 100644
--- a/test/ruby/test_keyword.rb
+++ b/test/ruby/test_keyword.rb
@@ -290,4 +290,25 @@ class TestKeywordArguments < Test::Unit::TestCase
     assert_equal(1, o.bug7942(), bug7942)
     assert_equal(42, o.bug7942(a: 42), bug7942)
   end
+
+  def test_required_keyword
+    feature7701 = '[ruby-core:51454] [Feature #7701] required keyword argument'
+    o = Object.new
+    assert_nothing_raised(SyntaxError, feature7701) do
+      eval("def o.foo(a:) a; end")
+    end
+    assert_raise(ArgumentError, feature7701) {o.foo}
+    assert_equal(42, o.foo(a: 42), feature7701)
+    assert_equal([[:keyreq, :a]], o.method(:foo).parameters, feature7701)
+  end
+
+  def test_block_required_keyword
+    feature7701 = '[ruby-core:51454] [Feature #7701] required keyword argument'
+    b = assert_nothing_raised(SyntaxError, feature7701) do
+      break eval("proc {|a:| a}")
+    end
+    assert_raise(ArgumentError, feature7701) {b.call}
+    assert_equal(42, b.call(a: 42), feature7701)
+    assert_equal([[:keyreq, :a]], b.parameters, feature7701)
+  end
 end