Take 2 on AltiVec-style vector initializers.

Fixes PR4704 problems

Addresses Eli's patch feedback re: ugly cast code

Updates all postfix operators to remove ParenListExprs.  While this is awful,
no better solution (say, in the parser) is obvious to me.  Better solutions
welcome.

llvm-svn: 78621

1 files changed, 28 insertions, 0 deletions

diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index 2c07de6c79a..ce8bb516c09 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -1784,6 +1784,26 @@ void DesignatedInitExpr::DoDestroy(ASTContext &C) {
   Expr::DoDestroy(C);
 }
 
+ParenListExpr::ParenListExpr(ASTContext& C, SourceLocation lparenloc, 
+                             Expr **exprs, unsigned nexprs,
+                             SourceLocation rparenloc)
+: Expr(ParenListExprClass, QualType(),
+       hasAnyTypeDependentArguments(exprs, nexprs),
+       hasAnyValueDependentArguments(exprs, nexprs)), 
+  NumExprs(nexprs), LParenLoc(lparenloc), RParenLoc(rparenloc) {
+  
+  Exprs = new (C) Stmt*[nexprs];
+  for (unsigned i = 0; i != nexprs; ++i)
+    Exprs[i] = exprs[i];
+}
+
+void ParenListExpr::DoDestroy(ASTContext& C) {
+  DestroyChildren(C);
+  if (Exprs) C.Deallocate(Exprs);
+  this->~ParenListExpr();
+  C.Deallocate(this);
+}
+
 //===----------------------------------------------------------------------===//
 //  ExprIterator.
 //===----------------------------------------------------------------------===//
@@ -1988,6 +2008,14 @@ Stmt::child_iterator ImplicitValueInitExpr::child_end() {
   return child_iterator(); 
 }
 
+// ParenListExpr
+Stmt::child_iterator ParenListExpr::child_begin() {
+  return &Exprs[0];
+}
+Stmt::child_iterator ParenListExpr::child_end() {
+  return &Exprs[0]+NumExprs;
+}
+
 // ObjCStringLiteral
 Stmt::child_iterator ObjCStringLiteral::child_begin() { 
   return &String;