Improve the AST representation of Objective-C @try/@catch/@finally

statements. Instead of the @try having a single @catch, where all of
the @catch's were chained (using an O(n^2) algorithm nonetheless),
@try just holds an array of its @catch blocks. The resulting AST is
slightly more compact (not important) and better represents the actual
language semantics (good).

llvm-svn: 102221

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/lib/AST/StmtDumper.cpp b/clang/lib/AST/StmtDumper.cpp
index 05adc0292e3..8481055b9d0 100644
--- a/clang/lib/AST/StmtDumper.cpp
+++ b/clang/lib/AST/StmtDumper.cpp
@@ -143,6 +143,7 @@ namespace  {
     void DumpCXXTemporary(CXXTemporary *Temporary);
 
     // ObjC
+    void VisitObjCAtCatchStmt(ObjCAtCatchStmt *Node);
     void VisitObjCEncodeExpr(ObjCEncodeExpr *Node);
     void VisitObjCMessageExpr(ObjCMessageExpr* Node);
     void VisitObjCSelectorExpr(ObjCSelectorExpr *Node);
@@ -524,6 +525,16 @@ void StmtDumper::VisitObjCMessageExpr(ObjCMessageExpr* Node) {
   }
 }
 
+void StmtDumper::VisitObjCAtCatchStmt(ObjCAtCatchStmt *Node) {
+  DumpStmt(Node);
+  if (ParmVarDecl *CatchParam = Node->getCatchParamDecl()) {
+    OS << " catch parm = ";
+    DumpDeclarator(CatchParam);
+  } else {
+    OS << " catch all";
+  }
+}
+
 void StmtDumper::VisitObjCEncodeExpr(ObjCEncodeExpr *Node) {
   DumpExpr(Node);
   OS << " ";