commit f242b1b0c4e998911cb96b2ba7e27ab4a5abaed3
author Steve Naroff <snaroff@apple.com> Fri Jul 24 17:54:45 2009 +0000
committer Steve Naroff <snaroff@apple.com> Fri Jul 24 17:54:45 2009 +0000
tree 5b69e6d4f2903e89a5c70ffaa759820c7833259b
parent fc514abac21dbd801e2b665a1a24075c5ff62f44

Allow front-end 'isa' access on object's of type 'id'.
Enhance test case to cover 'isa' access on interface types (clang produces an error, GCC produces a warning).

Still need back-end CodeGen for ObjCIsaExpr.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76979 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/PCHReaderStmt.cpp

diff --git a/lib/Frontend/PCHReaderStmt.cpp b/lib/Frontend/PCHReaderStmt.cpp
index 5681b67..16c0e79 100644
--- a/lib/Frontend/PCHReaderStmt.cpp
+++ b/lib/Frontend/PCHReaderStmt.cpp
@@ -104,6 +104,7 @@
     unsigned VisitObjCKVCRefExpr(ObjCKVCRefExpr *E);
     unsigned VisitObjCMessageExpr(ObjCMessageExpr *E);
     unsigned VisitObjCSuperExpr(ObjCSuperExpr *E);
+    unsigned VisitObjCIsaExpr(ObjCIsaExpr *E);
     
     unsigned VisitObjCForCollectionStmt(ObjCForCollectionStmt *);
     unsigned VisitObjCAtCatchStmt(ObjCAtCatchStmt *);
@@ -448,6 +449,14 @@
   return 1;
 }
 
+unsigned PCHStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
+  VisitExpr(E);
+  E->setBase(cast<Expr>(StmtStack.back()));
+  E->setIsaMemberLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setArrow(Record[Idx++]);
+  return 1;
+}
+
 unsigned PCHStmtReader::VisitCastExpr(CastExpr *E) {
   VisitExpr(E);
   E->setSubExpr(cast<Expr>(StmtStack.back()));
@@ -1106,6 +1115,9 @@
     case pch::EXPR_OBJC_SUPER_EXPR:
       S = new (Context) ObjCSuperExpr(Empty);
       break;
+    case pch::EXPR_OBJC_ISA:
+      S = new (Context) ObjCIsaExpr(Empty);
+      break;
     case pch::STMT_OBJC_FOR_COLLECTION:
       S = new (Context) ObjCForCollectionStmt(Empty);
       break;

lib/Frontend/PCHWriterStmt.cpp

diff --git a/lib/Frontend/PCHWriterStmt.cpp b/lib/Frontend/PCHWriterStmt.cpp
index ae606b6..3e4c6f5 100644
--- a/lib/Frontend/PCHWriterStmt.cpp
+++ b/lib/Frontend/PCHWriterStmt.cpp
@@ -97,6 +97,7 @@
     void VisitObjCKVCRefExpr(ObjCKVCRefExpr *E);
     void VisitObjCMessageExpr(ObjCMessageExpr *E);
     void VisitObjCSuperExpr(ObjCSuperExpr *E);
+    void VisitObjCIsaExpr(ObjCIsaExpr *E);
     
     // Objective-C Statements    
     void VisitObjCForCollectionStmt(ObjCForCollectionStmt *);
@@ -416,6 +417,14 @@
   Code = pch::EXPR_MEMBER;
 }
 
+void PCHStmtWriter::VisitObjCIsaExpr(ObjCIsaExpr *E) {
+  VisitExpr(E);
+  Writer.WriteSubStmt(E->getBase());
+  Writer.AddSourceLocation(E->getIsaMemberLoc(), Record);
+  Record.push_back(E->isArrow());
+  Code = pch::EXPR_OBJC_ISA;
+}
+
 void PCHStmtWriter::VisitCastExpr(CastExpr *E) {
   VisitExpr(E);
   Writer.WriteSubStmt(E->getSubExpr());