From b2eecdc90db2b22f43a7db2c9eb24b72be637357 Mon Sep 17 00:00:00 2001
From: Justin Zeus <askzy@fb.com>
Date: Tue, 12 Apr 2016 17:44:31 -0700
Subject: [PATCH] Parse _Nonnull and _Nullable attributes in
 RCTParseMethodSignature

Differential Revision: D3171305

fb-gh-sync-id: 687b030e13e762110f9ea9b750b0bc09457229a5
fbshipit-source-id: 687b030e13e762110f9ea9b750b0bc09457229a5
---
 React/Base/RCTModuleMethod.m | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/React/Base/RCTModuleMethod.m b/React/Base/RCTModuleMethod.m
index 0e7dd72f246..2d4360d8948 100644
--- a/React/Base/RCTModuleMethod.m
+++ b/React/Base/RCTModuleMethod.m
@@ -93,6 +93,16 @@ static RCTNullability RCTParseNullability(const char **input)
   return RCTNullabilityUnspecified;
 }
 
+static RCTNullability RCTParseNullabilityPostfix(const char **input)
+{
+  if (RCTReadString(input, "_Nullable")) {
+    return RCTNullable;
+  } else if (RCTReadString(input, "_Nonnull")) {
+    return RCTNonnullable;
+  }
+  return RCTNullabilityUnspecified;
+}
+
 SEL RCTParseMethodSignature(NSString *, NSArray<RCTMethodArgument *> **);
 SEL RCTParseMethodSignature(NSString *methodSignature, NSArray<RCTMethodArgument *> **arguments)
 {
@@ -117,6 +127,10 @@ SEL RCTParseMethodSignature(NSString *methodSignature, NSArray<RCTMethodArgument
       RCTSkipWhitespace(&input);
 
       NSString *type = RCTParseType(&input);
+      RCTSkipWhitespace(&input);
+      if (nullability == RCTNullabilityUnspecified) {
+        nullability = RCTParseNullabilityPostfix(&input);
+      }
       [args addObject:[[RCTMethodArgument alloc] initWithType:type
                                                   nullability:nullability
                                                        unused:unused]];