Partial AST and Sema support for C++ try-catch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61337 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 48 insertions, 0 deletions

diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index 2308159f5d..079ed4e0da 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -14,6 +14,7 @@
 #include "clang/AST/Stmt.h"
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/ExprObjC.h"
+#include "clang/AST/Type.h"
 using namespace clang;
 
 static struct StmtClassNameTable {
@@ -333,3 +334,22 @@ Stmt::child_iterator ObjCAtSynchronizedStmt::child_end() {
   return &SubStmts[0]+END_EXPR;
 }
 
+// CXXCatchStmt
+Stmt::child_iterator CXXCatchStmt::child_begin() {
+  return &HandlerBlock;
+}
+
+Stmt::child_iterator CXXCatchStmt::child_end() {
+  return &HandlerBlock + 1;
+}
+
+QualType CXXCatchStmt::getCaughtType() {
+  if (ExceptionDecl)
+    return llvm::cast<VarDecl>(ExceptionDecl)->getType();
+  return QualType();
+}
+
+void CXXCatchStmt::Destroy(ASTContext& C) {
+  ExceptionDecl->Destroy(C);
+  Stmt::Destroy(C);
+}
diff --git a/lib/AST/StmtPrinter.cpp b/lib/AST/StmtPrinter.cpp
index 81e158e657..61cd89f70f 100644
--- a/lib/AST/StmtPrinter.cpp
+++ b/lib/AST/StmtPrinter.cpp
@@ -474,6 +474,17 @@ void StmtPrinter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *Node) {
   OS << "\n";
 }
 
+void StmtPrinter::VisitCXXCatchStmt(CXXCatchStmt *Node) {
+  Indent() << "catch (";
+  if (Decl *ExDecl = Node->getExceptionDecl())
+    PrintRawDecl(ExDecl);
+  else
+    OS << "...";
+  OS << ") ";
+  PrintRawCompoundStmt(cast<CompoundStmt>(Node->getHandlerBlock()));
+  OS << "\n";
+}
+
 //===----------------------------------------------------------------------===//
 //  Expr printing methods.
 //===----------------------------------------------------------------------===//
diff --git a/lib/AST/StmtSerialization.cpp b/lib/AST/StmtSerialization.cpp
index d12ecd0d93..2d6f755719 100644
--- a/lib/AST/StmtSerialization.cpp
+++ b/lib/AST/StmtSerialization.cpp
@@ -242,6 +242,9 @@ Stmt* Stmt::Create(Deserializer& D, ASTContext& C) {
 
     case CXXDependentNameExprClass:
       return CXXDependentNameExpr::CreateImpl(D, C);
+
+    case CXXCatchStmtClass:
+      return CXXCatchStmt::CreateImpl(D, C);
   }
 }
 
@@ -1523,3 +1526,17 @@ CXXDependentNameExpr::CreateImpl(llvm::Deserializer& D, ASTContext& C) {
   SourceLocation L = SourceLocation::ReadVal(D);
   return new CXXDependentNameExpr(N, Ty, L);
 }
+
+void CXXCatchStmt::EmitImpl(llvm::Serializer& S) const {
+  S.Emit(CatchLoc);
+  S.EmitOwnedPtr(ExceptionDecl);
+  S.EmitOwnedPtr(HandlerBlock);
+}
+
+CXXCatchStmt *
+CXXCatchStmt::CreateImpl(llvm::Deserializer& D, ASTContext& C) {
+  SourceLocation CatchLoc = SourceLocation::ReadVal(D);
+  Decl *ExDecl = D.ReadOwnedPtr<Decl>(C);
+  Stmt *HandlerBlock = D.ReadOwnedPtr<Stmt>(C);
+  return new CXXCatchStmt(CatchLoc, ExDecl, HandlerBlock);
+}