From 5caacc3848652d9c38a22a5ad8383a41c195c70e Mon Sep 17 00:00:00 2001
From: Marcel Greter <marcel.greter@ocbnet.ch>
Date: Sat, 28 Mar 2015 01:47:27 +0100
Subject: [PATCH] Implement `/deep/` shadow DOM selector

Fixes https://github.com/sass/libsass/issues/452
---
 constants.cpp | 3 +++
 constants.hpp | 3 +++
 parser.cpp    | 4 ++++
 3 files changed, 10 insertions(+)

diff --git a/constants.cpp b/constants.cpp
index b2491c5449..a7dd3c6bee 100644
--- a/constants.cpp
+++ b/constants.cpp
@@ -78,6 +78,9 @@ namespace Sass {
     extern const char webkit_calc_kwd[]  = "-webkit-calc(";
     extern const char ms_calc_kwd[]      = "-ms-calc(";
 
+    // css selector keywords
+    extern const char sel_deep_kwd[] = "/deep/";
+
     // css attribute-matching operators
     extern const char tilde_equal[]  = "~=";
     extern const char pipe_equal[]   = "|=";
diff --git a/constants.hpp b/constants.hpp
index 2b15bf158d..a48360bdb0 100644
--- a/constants.hpp
+++ b/constants.hpp
@@ -80,6 +80,9 @@ namespace Sass {
     extern const char webkit_calc_kwd[];
     extern const char ms_calc_kwd[];
 
+    // css selector keywords
+    extern const char sel_deep_kwd[];
+
     // css attribute-matching operators
     extern const char tilde_equal[];
     extern const char pipe_equal[];
diff --git a/parser.cpp b/parser.cpp
index f21752e22d..0e5f4aa3b9 100644
--- a/parser.cpp
+++ b/parser.cpp
@@ -628,6 +628,9 @@ namespace Sass {
     else if (lex< quoted_string >() || lex< number >()) {
       return new (ctx.mem) Type_Selector(pstate, unquote(lexed));
     }
+    else if (lex< exactly < sel_deep_kwd > >()) {
+      return new (ctx.mem) Type_Selector(pstate, unquote(lexed));
+    }
     else if (peek< pseudo_not >()) {
       return parse_negated_selector();
     }
@@ -1984,6 +1987,7 @@ namespace Sass {
            (q = peek< dimension >(p))                              ||
            (q = peek< quoted_string >(p))                          ||
            (q = peek< exactly<'*'> >(p))                           ||
+           (q = peek< exactly<sel_deep_kwd> >(p))                           ||
            (q = peek< exactly<'('> >(p))                           ||
            (q = peek< exactly<')'> >(p))                           ||
            (q = peek< exactly<'['> >(p))                           ||