Sync YARP gemspec (#8101)

* Sync YARP gemspec

We were previously not syncing the YARP gemspec over which meant
that the Ruby YARP gem was out of sync.

* Sync YARP node / lex_compat files

5 files changed, 150 insertions, 3 deletions

diff --git a/lib/yarp/lex_compat.rb b/lib/yarp/lex_compat.rb
index 053b012270..e15f26ec95 100644
--- a/lib/yarp/lex_compat.rb
+++ b/lib/yarp/lex_compat.rb
@@ -169,7 +169,7 @@ module YARP
       USTAR: :on_op,
       USTAR_STAR: :on_op,
       WORDS_SEP: :on_words_sep,
-      __END__: :on___end__
+      "__END__": :on___end__
     }.freeze
 
     # When we produce tokens, we produce the same arrays that Ripper does.
diff --git a/lib/yarp/node.rb b/lib/yarp/node.rb
index d2f8863091..e3d347b05c 100644
--- a/lib/yarp/node.rb
+++ b/lib/yarp/node.rb
@@ -5050,10 +5050,13 @@ module YARP
   # Represents a rescue statement.
   #
   #     begin
-  #     rescue
-  #       foo
+  #     rescue Foo, *splat, Bar => ex
   #     ^^^^^^
+  #       foo
   #     end
+  #
+  # `Foo, *splat, Bar` are in the `exceptions` field.
+  # `ex` is in the `exception` field.
   class RescueNode < Node
     # attr_reader keyword_loc: Location
     attr_reader :keyword_loc
diff --git a/lib/yarp/yarp.gemspec b/lib/yarp/yarp.gemspec
new file mode 100644
index 0000000000..c80d37b4f9
--- /dev/null
+++ b/lib/yarp/yarp.gemspec
@@ -0,0 +1,115 @@
+# frozen_string_literal: true
+
+Gem::Specification.new do |spec|
+  spec.name = "yarp"
+  spec.version = "0.4.0"
+  spec.authors = ["Shopify"]
+  spec.email = ["ruby@shopify.com"]
+
+  spec.summary = "Yet Another Ruby Parser"
+  spec.homepage = "https://github.com/ruby/yarp"
+  spec.license = "MIT"
+
+  spec.require_paths = ["lib"]
+  spec.files = [
+    "CODE_OF_CONDUCT.md",
+    "CONTRIBUTING.md",
+    "LICENSE.md",
+    "Makefile.in",
+    "README.md",
+    "config.h.in",
+    "config.yml",
+    "configure",
+    "docs/configuration.md",
+    "docs/design.md",
+    "docs/encoding.md",
+    "docs/extension.md",
+    "docs/fuzzing.md",
+    "docs/heredocs.md",
+    "docs/mapping.md",
+    "docs/ripper.md",
+    "docs/serialization.md",
+    "docs/testing.md",
+    "ext/yarp/api_node.c",
+    "ext/yarp/api_pack.c",
+    "ext/yarp/extension.c",
+    "ext/yarp/extension.h",
+    "include/yarp.h",
+    "include/yarp/ast.h",
+    "include/yarp/defines.h",
+    "include/yarp/diagnostic.h",
+    "include/yarp/enc/yp_encoding.h",
+    "include/yarp/node.h",
+    "include/yarp/pack.h",
+    "include/yarp/parser.h",
+    "include/yarp/regexp.h",
+    "include/yarp/unescape.h",
+    "include/yarp/util/yp_buffer.h",
+    "include/yarp/util/yp_char.h",
+    "include/yarp/util/yp_constant_pool.h",
+    "include/yarp/util/yp_list.h",
+    "include/yarp/util/yp_memchr.h",
+    "include/yarp/util/yp_newline_list.h",
+    "include/yarp/util/yp_state_stack.h",
+    "include/yarp/util/yp_string.h",
+    "include/yarp/util/yp_string_list.h",
+    "include/yarp/util/yp_strpbrk.h",
+    "include/yarp/version.h",
+    "lib/yarp.rb",
+    "lib/yarp/lex_compat.rb",
+    "lib/yarp/node.rb",
+    "lib/yarp/pack.rb",
+    "lib/yarp/ripper_compat.rb",
+    "lib/yarp/serialize.rb",
+    "src/diagnostic.c",
+    "src/enc/ascii.c",
+    "src/enc/big5.c",
+    "src/enc/euc_jp.c",
+    "src/enc/gbk.c",
+    "src/enc/iso_8859_1.c",
+    "src/enc/iso_8859_10.c",
+    "src/enc/iso_8859_11.c",
+    "src/enc/iso_8859_13.c",
+    "src/enc/iso_8859_14.c",
+    "src/enc/iso_8859_15.c",
+    "src/enc/iso_8859_16.c",
+    "src/enc/iso_8859_2.c",
+    "src/enc/iso_8859_3.c",
+    "src/enc/iso_8859_4.c",
+    "src/enc/iso_8859_5.c",
+    "src/enc/iso_8859_6.c",
+    "src/enc/iso_8859_7.c",
+    "src/enc/iso_8859_8.c",
+    "src/enc/iso_8859_9.c",
+    "src/enc/koi8_r.c",
+    "src/enc/shared.c",
+    "src/enc/shift_jis.c",
+    "src/enc/unicode.c",
+    "src/enc/windows_1251.c",
+    "src/enc/windows_1252.c",
+    "src/enc/windows_31j.c",
+    "src/node.c",
+    "src/pack.c",
+    "src/prettyprint.c",
+    "src/regexp.c",
+    "src/serialize.c",
+    "src/token_type.c",
+    "src/unescape.c",
+    "src/util/yp_buffer.c",
+    "src/util/yp_char.c",
+    "src/util/yp_constant_pool.c",
+    "src/util/yp_list.c",
+    "src/util/yp_memchr.c",
+    "src/util/yp_newline_list.c",
+    "src/util/yp_state_stack.c",
+    "src/util/yp_string.c",
+    "src/util/yp_string_list.c",
+    "src/util/yp_strncasecmp.c",
+    "src/util/yp_strpbrk.c",
+    "src/yarp.c",
+    "yarp.gemspec",
+  ]
+
+  spec.extensions = ["ext/yarp/extconf.rb"]
+  spec.metadata["allowed_push_host"] = "https://rubygems.org"
+end
diff --git a/test/yarp/snapshots/seattlerb/pct_w_heredoc_interp_nested.txt b/test/yarp/snapshots/seattlerb/pct_w_heredoc_interp_nested.txt
new file mode 100644
index 0000000000..89ce74ce19
--- /dev/null
+++ b/test/yarp/snapshots/seattlerb/pct_w_heredoc_interp_nested.txt
@@ -0,0 +1,28 @@
+ProgramNode(0...30)(
+  [],
+  StatementsNode(0...30)(
+    [ArrayNode(0...30)(
+       [StringNode(4...5)(nil, (4...5), nil, "1"),
+        InterpolatedStringNode(0...12)(
+          nil,
+          [EmbeddedStatementsNode(6...12)(
+             (6...8),
+             StatementsNode(8...19)(
+               [InterpolatedStringNode(8...19)(
+                  (8...11),
+                  [StringNode(15...17)(nil, (15...17), nil, "2\n")],
+                  (17...19)
+                )]
+             ),
+             (11...12)
+           )],
+          nil
+        ),
+        StringNode(13...14)(nil, (13...14), nil, "3"),
+        StringNode(25...26)(nil, (25...26), nil, "4"),
+        StringNode(27...28)(nil, (27...28), nil, "5")],
+       (0...3),
+       (29...30)
+     )]
+  )
+)
diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index e5dec18222..15a7ca7b6b 100755
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -416,6 +416,7 @@ module SyncDefaultGems
         mv "yarp/enc/#{f}", "yarp/enc/yp_#{f}"
       end
 
+      cp_r("#{upstream}/yarp.gemspec", "lib/yarp")
       cp_r("#{upstream}/include/yarp/.", "yarp")
       cp_r("#{upstream}/include/yarp.h", "yarp")