From: Ted Kremenek <kremenek@apple.com>
Date: Mon, 30 Mar 2009 22:29:21 +0000 (+0000)
Subject: Add partial CFG support for Objective-C exception-handling blocks. We basically
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e31c0d206b872b056dc42c3af21b11d5de4edfd9;p=clang

Add partial CFG support for Objective-C exception-handling blocks. We basically
assume that @catch blocks are never executed.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68072 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/AST/CFG.cpp b/lib/AST/CFG.cpp
index 804c2d2bd5..fc893d5b64 100644
--- a/lib/AST/CFG.cpp
+++ b/lib/AST/CFG.cpp
@@ -129,10 +129,13 @@ public:
     return Block;
   }
   
-  CFGBlock* VisitObjCAtTryStmt(ObjCAtTryStmt* S) { return NYS(); }
-  CFGBlock* VisitObjCAtCatchStmt(ObjCAtCatchStmt* S) { return NYS(); }
-  CFGBlock* VisitObjCAtFinallyStmt(ObjCAtFinallyStmt* S) { return NYS(); }
-  
+  CFGBlock* VisitObjCAtTryStmt(ObjCAtTryStmt* S);
+  CFGBlock* VisitObjCAtCatchStmt(ObjCAtCatchStmt* S) { 
+    // FIXME: For now we pretend that @catch and the code it contains
+    //  does not exit.
+    return Block;
+  }
+
   // FIXME: This is not completely supported.  We basically @throw like
   // a 'return'.
   CFGBlock* VisitObjCAtThrowStmt(ObjCAtThrowStmt* S);
@@ -888,7 +891,17 @@ CFGBlock* CFGBuilder::VisitObjCForCollectionStmt(ObjCForCollectionStmt* S) {
   Block = createBlock();
   return addStmt(S->getCollection());
 }    
-
+  
+CFGBlock* CFGBuilder::VisitObjCAtTryStmt(ObjCAtTryStmt* S) {
+  // Process the statements of the @finally block.
+  if (ObjCAtFinallyStmt *FS = S->getFinallyStmt())
+    Visit(FS->getFinallyBody());
+  
+  // FIXME: Handle the @catch statements.
+  
+  // Process the try body
+  return Visit(S->getTryBody());
+}
 
 CFGBlock* CFGBuilder::VisitWhileStmt(WhileStmt* W) {
   // "while" is a control-flow statement.  Thus we stop processing the