* parse.y: added symbols and qsymbols productions for %i and %I

  support. %i{ .. } returns a list of symbols without interpolation,
  %I{ .. } returns a list of symbols with interpolation.  Thanks to
  Josh Susser for inspiration of this feature. [Feature #4985]

* ext/ripper/eventids2.c: added ripper events for %i and %I.

* test/ripper/test_parser_events.rb: ripper tests

* test/ripper/test_scanner_events.rb: ditto

* test/ruby/test_array.rb: test for %i and %I behavior

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36524 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 57 insertions, 0 deletions

diff --git a/test/ripper/test_parser_events.rb b/test/ripper/test_parser_events.rb
index 3b4785804d..278b47623a 100644
--- a/test/ripper/test_parser_events.rb
+++ b/test/ripper/test_parser_events.rb
@@ -755,12 +755,36 @@ class TestRipper::ParserEvents < Test::Unit::TestCase
     assert_equal true, thru_qwords_add
   end
 
+  def test_qsymbols_add
+    thru_qsymbols_add = false
+    parse('%i[a]', :on_qsymbols_add) {thru_qsymbols_add = true}
+    assert_equal true, thru_qsymbols_add
+  end
+
+  def test_symbols_add
+    thru_symbols_add = false
+    parse('%I[a]', :on_symbols_add) {thru_symbols_add = true}
+    assert_equal true, thru_symbols_add
+  end
+
   def test_qwords_new
     thru_qwords_new = false
     parse('%w[]', :on_qwords_new) {thru_qwords_new = true}
     assert_equal true, thru_qwords_new
   end
 
+  def test_qsymbols_new
+    thru_qsymbols_new = false
+    parse('%i[]', :on_qsymbols_new) {thru_qsymbols_new = true}
+    assert_equal true, thru_qsymbols_new
+  end
+
+  def test_symbols_new
+    thru_symbols_new = false
+    parse('%I[]', :on_symbols_new) {thru_symbols_new = true}
+    assert_equal true, thru_symbols_new
+  end
+
   def test_redo
     thru_redo = false
     parse('redo', :on_redo) {thru_redo = true}
diff --git a/test/ripper/test_scanner_events.rb b/test/ripper/test_scanner_events.rb
index 5b58dd8289..bcbbf0192c 100644
--- a/test/ripper/test_scanner_events.rb
+++ b/test/ripper/test_scanner_events.rb
@@ -608,6 +608,28 @@ class TestRipper::ScannerEvents < Test::Unit::TestCase
                  scan('qwords_beg', '%w( w w w )')
   end
 
+  def test_qsymbols_beg
+    assert_equal [],
+                 scan('qsymbols_beg', '')
+    assert_equal ['%i('],
+                 scan('qsymbols_beg', '%i()')
+    assert_equal ['%i('],
+                 scan('qsymbols_beg', '%i(w w w)')
+    assert_equal ['%i( '],
+                 scan('qsymbols_beg', '%i( w w w )')
+  end
+
+  def test_symbols_beg
+    assert_equal [],
+                 scan('symbols_beg', '')
+    assert_equal ['%I('],
+                 scan('symbols_beg', '%I()')
+    assert_equal ['%I('],
+                 scan('symbols_beg', '%I(w w w)')
+    assert_equal ['%I( '],
+                 scan('symbols_beg', '%I( w w w )')
+  end
+
   # FIXME: Close paren must not present (`words_end' scanner event?).
   def test_words_sep
     assert_equal [],
diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index fff55e13ff..4a9a58b723 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -12,6 +12,17 @@ class TestArray < Test::Unit::TestCase
     $VERBOSE = @verbose
   end
 
+  def test_percent_i
+    assert_equal([:foo, :bar], %i[foo bar])
+    assert_equal([:"\"foo"], %i["foo])
+  end
+
+  def test_percent_I
+    x = 10
+    assert_equal([:foo, :b10], %I[foo b#{x}])
+    assert_equal([:"\"foo10"], %I["foo#{x}])
+  end
+
   def test_0_literal
     assert_equal([1, 2, 3, 4], [1, 2] + [3, 4])
     assert_equal([1, 2, 1, 2], [1, 2] * 2)