From cb3b714db098466d34735c23c79c8d8f34b2e233 Mon Sep 17 00:00:00 2001
From: bashi <bashi@chromium.org>
Date: Tue, 31 Mar 2015 23:56:18 -0700
Subject: [PATCH] IDL: Support 'required' in dictionary

Per spec[1], a dictionary member can be specified as 'required'.
If it is specified, node.GetProperty('REQUIRED') returns true.

[1] http://heycam.github.io/webidl/#required-dictionary-member

BUG=472220

Review URL: https://codereview.chromium.org/1046383002

Cr-Commit-Position: refs/heads/master@{#323195}
---
 tools/idl_parser/idl_parser.py                  | 11 ++++++++---
 tools/idl_parser/test_parser/dictionary_web.idl |  9 +++++++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/tools/idl_parser/idl_parser.py b/tools/idl_parser/idl_parser.py
index 27b19142908e..f8e509f7602f 100755
--- a/tools/idl_parser/idl_parser.py
+++ b/tools/idl_parser/idl_parser.py
@@ -309,10 +309,15 @@ class IDLParser(object):
 
   # [13]
   def p_DictionaryMember(self, p):
-    """DictionaryMember : Type identifier Default ';'"""
-    p[0] = self.BuildNamed('Key', p, 2, ListFromConcat(p[1], p[3]))
+    """DictionaryMember : Required Type identifier Default ';'"""
+    p[0] = self.BuildNamed('Key', p, 3, ListFromConcat(p[1], p[2], p[4]))
 
-  # [14] NOT IMPLEMENTED (Required)
+  # [14]
+  def p_Required(self, p):
+    """Required : REQUIRED
+                |"""
+    if len(p) > 1:
+      p[0] = self.BuildTrue('REQUIRED')
 
   # [15]
   def p_PartialDictionary(self, p):
diff --git a/tools/idl_parser/test_parser/dictionary_web.idl b/tools/idl_parser/test_parser/dictionary_web.idl
index ba5b1644cc68..507b28834936 100644
--- a/tools/idl_parser/test_parser/dictionary_web.idl
+++ b/tools/idl_parser/test_parser/dictionary_web.idl
@@ -69,6 +69,15 @@ dictionary MyDictBig {
   long unsetLong;
 };
 
+/* TREE
+ *Dictionary(MyDictRequired)
+ *  Key(setLong)
+ *    Type()
+ *      PrimitiveType(long)
+ */
+dictionary MyDictRequired {
+  required long setLong;
+};
 
 /* ERROR Unexpected "{" after keyword "dictionary". */
 dictionary {
-- 
2.11.4.GIT