Implement bracket insertion for Objective-C instance message sends as

part of parser recovery. For example, given:

  a method1:arg];

we detect after parsing the expression "a" that we have the start of a
message send expression. We pretend we've seen a '[' prior to the a,
then parse the remainder as a message send. We'll then give a
diagnostic+fix-it such as:

fixit-objc-message.m:17:3: error: missing '[' at start of message
      send expression
  a method1:arg];
  ^
  [

The algorithm here is very simple, and always assumes that the open
bracket goes at the beginning of the message send. It also only works
for non-super instance message sends at this time.

llvm-svn: 113968

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/lib/Parse/Parser.cpp b/clang/lib/Parse/Parser.cpp
index 02802773a03..cd4f342042b 100644
--- a/clang/lib/Parse/Parser.cpp
+++ b/clang/lib/Parse/Parser.cpp
@@ -23,8 +23,8 @@ using namespace clang;
 
 Parser::Parser(Preprocessor &pp, Sema &actions)
   : CrashInfo(*this), PP(pp), Actions(actions), Diags(PP.getDiagnostics()),
-    GreaterThanIsOperator(true), ColonIsSacred(false),
-    TemplateParameterDepth(0) {
+    GreaterThanIsOperator(true), ColonIsSacred(false), 
+    InMessageExpression(false), TemplateParameterDepth(0) {
   Tok.setKind(tok::eof);
   Actions.CurScope = 0;
   NumCachedScopes = 0;