parse.y: junk sigil only names

* parse.y (intern_str): sigil only names are junk, at least one
  identifier character is needed.  [ruby-dev:47723] [Bug #8928]
* parse.y (rb_enc_symname_type): fix out of bound access.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42988 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 96 insertions, 0 deletions

diff --git a/test/-ext-/symbol/test_type.rb b/test/-ext-/symbol/test_type.rb
new file mode 100644
index 0000000000..427888eeb9
--- /dev/null
+++ b/test/-ext-/symbol/test_type.rb
@@ -0,0 +1,96 @@
+require 'test/unit'
+require "-test-/symbol"
+
+module Test_Symbol
+  class TestType < Test::Unit::TestCase
+    def assert_symtype(sym, pred, msg = nil)
+      assert_send([Bug::Symbol, pred, sym], msg)
+    end
+
+    def assert_not_symtype(sym, pred, msg = nil)
+      assert_not_send([Bug::Symbol, pred, sym], msg)
+    end
+
+    def test_const
+      assert_symtype("Foo", :const?)
+      assert_not_symtype("F!", :const?)
+      assert_not_symtype("foo", :const?)
+      assert_not_symtype("@foo", :const?)
+      assert_not_symtype("@@foo", :const?)
+      assert_not_symtype("$foo", :const?)
+      assert_not_symtype("foo=", :const?)
+      assert_not_symtype("[foo]", :const?)
+      assert_not_symtype("xFoo", :const?)
+    end
+
+    def test_local
+      assert_symtype("foo", :local?)
+      assert_symtype("fooBar", :local?)
+      assert_symtype("foo_bar", :local?)
+      assert_not_symtype("foo!", :local?)
+      assert_not_symtype("foo?", :local?)
+      assert_not_symtype("Foo", :local?)
+      assert_not_symtype("@foo", :local?)
+      assert_not_symtype("@@foo", :local?)
+      assert_not_symtype("$foo", :local?)
+      assert_not_symtype("foo=", :local?)
+      assert_not_symtype("[foo]", :local?)
+    end
+
+    def test_global
+      assert_symtype("$foo", :global?)
+      assert_symtype("$$", :global?)
+      assert_not_symtype("$()", :global?)
+      assert_not_symtype("$", :global?)
+      assert_not_symtype("foo", :global?)
+      assert_not_symtype("Foo", :global?)
+      assert_not_symtype("@foo", :global?)
+      assert_not_symtype("@@foo", :global?)
+      assert_not_symtype("foo=", :global?)
+      assert_not_symtype("[foo]", :global?)
+    end
+
+    def test_instance
+      assert_symtype("@foo", :instance?)
+      assert_not_symtype("@", :instance?)
+      assert_not_symtype("@1", :instance?)
+      assert_not_symtype("@@", :instance?)
+      assert_not_symtype("foo", :instance?)
+      assert_not_symtype("Foo", :instance?)
+      assert_not_symtype("@@foo", :instance?)
+      assert_not_symtype("$foo", :instance?)
+      assert_not_symtype("foo=", :instance?)
+      assert_not_symtype("[foo]", :instance?)
+    end
+
+    def test_class
+      assert_symtype("@@foo", :class?)
+      assert_not_symtype("@@", :class?)
+      assert_not_symtype("@", :class?)
+      assert_not_symtype("@@1", :class?)
+      assert_not_symtype("foo", :class?)
+      assert_not_symtype("Foo", :class?)
+      assert_not_symtype("@foo", :class?)
+      assert_not_symtype("$foo", :class?)
+      assert_not_symtype("foo=", :class?)
+      assert_not_symtype("[foo]", :class?)
+    end
+
+    def test_attrset
+      assert_symtype("foo=", :attrset?)
+      assert_symtype("Foo=", :attrset?)
+      assert_symtype("@foo=", :attrset?)
+      assert_symtype("@@foo=", :attrset?)
+      assert_symtype("$foo=", :attrset?)
+      assert_not_symtype("0=", :attrset?)
+      assert_not_symtype("@=", :attrset?)
+      assert_not_symtype("@@=", :attrset?)
+      assert_not_symtype("foo", :attrset?)
+      assert_not_symtype("Foo", :attrset?)
+      assert_not_symtype("@foo", :attrset?)
+      assert_not_symtype("@@foo", :attrset?)
+      assert_not_symtype("$foo", :attrset?)
+      assert_not_symtype("[foo]", :attrset?)
+    end
+  end
+end