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-rw-r--r--contrib/llvm/tools/clang/lib/AST/FullExpr.cpp58
1 files changed, 58 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/AST/FullExpr.cpp b/contrib/llvm/tools/clang/lib/AST/FullExpr.cpp
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+++ b/contrib/llvm/tools/clang/lib/AST/FullExpr.cpp
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+//===--- FullExpr.cpp - C++ full expression class ---------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the FullExpr interface, to be used for type safe handling
+// of full expressions.
+//
+// Full expressions are described in C++ [intro.execution]p12.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/FullExpr.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/ExprCXX.h"
+#include "llvm/Support/AlignOf.h"
+using namespace clang;
+
+FullExpr FullExpr::Create(ASTContext &Context, Expr *SubExpr,
+ CXXTemporary **Temporaries, unsigned NumTemporaries) {
+ FullExpr E;
+
+ if (!NumTemporaries) {
+ E.SubExpr = SubExpr;
+ return E;
+ }
+
+ unsigned Size = sizeof(FullExpr)
+ + sizeof(CXXTemporary *) * NumTemporaries;
+
+ unsigned Align = llvm::AlignOf<ExprAndTemporaries>::Alignment;
+ ExprAndTemporaries *ET =
+ static_cast<ExprAndTemporaries *>(Context.Allocate(Size, Align));
+
+ ET->SubExpr = SubExpr;
+ std::copy(Temporaries, Temporaries + NumTemporaries, ET->temps_begin());
+
+ return E;
+}
+
+void FullExpr::Destroy(ASTContext &Context) {
+ if (Expr *E = SubExpr.dyn_cast<Expr *>()) {
+ E->Destroy(Context);
+ return;
+ }
+
+ ExprAndTemporaries *ET = SubExpr.get<ExprAndTemporaries *>();
+ for (ExprAndTemporaries::temps_iterator i = ET->temps_begin(),
+ e = ET->temps_end(); i != e; ++i)
+ (*i)->Destroy(Context);
+
+ Context.Deallocate(ET);
+}
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